Methane Production From Anaerobic Co Digestion Of Wastewater Sludge And Scenedesmus Sp

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Methane Production from Anaerobic Co-digestion of Wastewater Sludge and Scenedesmus Sp

Author :
Publisher :
ISBN 13 :
Total Pages : 83 pages
Book Rating : 4.:/5 (871 download)

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Book Synopsis Methane Production from Anaerobic Co-digestion of Wastewater Sludge and Scenedesmus Sp by :

Download or read book Methane Production from Anaerobic Co-digestion of Wastewater Sludge and Scenedesmus Sp written by and published by . This book was released on 2014 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: The combination of rising energy consumption in the U.S. and sustained growth of developing countries has made clear the importance of developing an energy source that is renewable and minimizes greenhouse gas emissions. The use of algae as an energy source can satisfy both of these criteria, but the current focus on developing it as a biofuel requires a significant amount of energy input, making it not yet economically feasible. This research combines a promising energy source with a decades-old wastewater treatment technology to generate biogas by combining the anaerobic digestion of algae and wastewater sludge. Bench-scale anaerobic digesters were setup with various proportions of the microalgae Scenedesmus quadricuada and thickened waste activated sludge (TWAS) and their biogas production was evaluated. In addition, the effects of operational parameters, such as temperature and alkalinity, on biogas production and residual characteristics were investigated. Biogas production for the various algae and TWAS combinations ranged from 0.46 to 0.72 mL per mg of volatile solids (VS) digested, while VS and chemical oxygen demand (COD) were reduced on average, 47 and 50%, respectively, at 35°C. Total coliform (TC) and fecal coliform (FC) concentrations saw at least a one log reduction after digestion, allowing the digestant to meet the USEPA requirements for classification as a Class B biosolid and its use in certain land applications. The digestant had nitrogen and phosphorous levels in the range of 5 to 19% as N and 5 to 15% as P, respectively, putting it in the range of commercial fertilizer levels. It was also determined that decreasing digestion temperatures from 35°C produced significantly less biogas, while adjusting the amount of initial alkalinity in digesters did not have a significant effect on biogas production. From these results, anaerobically digesting algae along with wastewater sludge can be utilized as a feasible method to harness the energy potential of algae. Although some of this potential remains locked up in the undigested portion, its synergy with wastewater treatment plants (WWTPs) cannot be overstated. Growing algae using existing waste streams at WWTPs such as CO2 and effluent wastewater highlights this technology's ability to transform waste into a valuable commodity without enormous new infrastructure investment..

Methane Production from Anaerobic Co-digestion of Chlorella Vulgaris and Wastewater Sludge

Author : Carissa Lee Williams
Publisher :
ISBN 13 :
Total Pages : 93 pages
Book Rating : 4.:/5 (825 download)

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Book Synopsis Methane Production from Anaerobic Co-digestion of Chlorella Vulgaris and Wastewater Sludge by : Carissa Lee Williams

Download or read book Methane Production from Anaerobic Co-digestion of Chlorella Vulgaris and Wastewater Sludge written by Carissa Lee Williams and published by . This book was released on 2012 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing demand for energy coupled with concerns over limited fossil fuel reserves and apprehensions over their contributions to greenhouse gas emissions have made the search for low carbon energy sources a high priority. Algal biomass could serve as an alternative source of renewable biofuels. Research efforts to date have primarily focused on the production of algal biofuels through lipid extraction, which involves high temperature and high pressure, resulting in an energy intensive process. In this research, the use of algal biomass as a supplementary feedstock to anaerobic digesters for the production of methane gas is evaluated. To test the potential of algal biomass as a supplementary feedstock, labscale anaerobic digesters are set-up. The methane gas production of various combinations of thickened waste activated sludge (TWAS) and algal biomass is investigated. Chlorella vulgaris (C. vulgaris) is used as representative microalgae. In addition, the effects of operational parameters, such as biomass loading, temperature and alkalinity, on biogas production are investigated. The results show that the biogas production for all biomass loading combinations of C. vulgaris and TWAS ranged from 0.47-0.57 mL per mg volatile solids (VS) digested. On average, VS and chemical oxygen demand (COD) were reduced 48 and 38%, respectively, at 35°C. Average total coliform (TC) and fecal coliform (FC) concentrations of 6.3x104 and 1.0x104 CFU per gram of total solids (TS), respectively, were measured in the digested waste at 35°C. Thus, the residual meets the USEPA requirements for pathogen reduction (FC 2x106 CFU per g TS) and vector attraction reduction ( 38% reduction in VS) for land application. The total nitrogen and phosphorus content of the residual was determined to be in the range of 9-17% as N and 3-7% as P (7-16% as P2O5), respectively, revealing its potential value as a fertilizer. It was also observed that decreased digestion temperatures resulted in lower biogas yields, while initial alkalinity in digesters did not appear to affect biogas production. From the results of the research, it can be inferred that algae can be co-digested with wastewater sludge, or by itself, to produce methane gas at wastewater treatment plants (WWTPs). This suggests that algae can be utilized as an energy source through anaerobic co-digestion with wastewater sludge. This is significant because algae can be grown with the nutrient and CO2 contained in waste streams at WWTPS, thereby minimizing the release of nutrients and effluent water to the environment. This reduced nutrient load results in treatment cost savings, while the reduction in effluent discharge decreases environmental pollution.

Anaerobic Co-digestion of Algal Biomass and a Supplemental Carbon Source Material to Produce Methane

Author : Yousef Soboh
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (945 download)

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Book Synopsis Anaerobic Co-digestion of Algal Biomass and a Supplemental Carbon Source Material to Produce Methane by : Yousef Soboh

Download or read book Anaerobic Co-digestion of Algal Biomass and a Supplemental Carbon Source Material to Produce Methane written by Yousef Soboh and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Algae that are grown in wastewater treatment lagoons could be an important substrate for biofuel production; however, the low C/N ratio of algae is not conducive to anaerobic digestion of algae with economically attractive methane production rates. Increasing the C/N ratio in anaerobic, laboratory scale, batch reactors by blending algal biomass with sodium acetate resulted i increased methane production rates as the C/N ratio increased. The highest amount of methane was produced when the C/N was 21/1. When the C/N was 24/1, the biogas production rate decreased. Batch experiments were done to evaluate the effect of optimizing the C/N ratio on methane production from algae and to identify the most essential information needed to conduct research on co-digestion of algal biomass using the continuous, high-rate, up-flow anaerobic sludge blanket (UASB) reactor system. Based on the results obtained from batch reactor experiments, anaerobic co-digestion of algal biomass, obtained by continuous centrifugation from the Logan City, Utah, 5th stage wastewater treatment lagoon, and sodium acetate was conducted using laboratory scale UASB reactors with the C/N ratio in the feedstock adjusted to 21/1. Duplicate, 34 L UASB reactor systems were built of poly(methyl methacrylate). Both reactors were seeded with 11 L of anaerobic sediment from the 3rd stage lagoon. The pH of the feedstock was adjusted to the neutral range. The feedstock was initially introduced at a low organic loading rate of 0.9 g/L.d with a hydraulic retention time (HRT) of 7.2 days and then increased up to 5.4 g/L.d and a HRT of 5.5 days. These organic loading rates corresponded to an initial influent chemical oxygen demand (COD) of 6.25 g/L and increased to 27.2 g/L. Methane production increased from 270 mL/g to 349 mL/g COD biodegraded. COD removal efficiency was 80% and biogas methane composition was 90% at steady state. Algal biomass contributed 33-50% of the COD in the feed stock depending on the COD of the algae paste from centrifugation. The shortest HRT at which steady state was not affected was 5.5 days. At lower HRT all monitored parameters showed a slight decrease after the 75th day of operation.

Methane Production from Agricultural and Domestic Wastes

Author : Hobson
Publisher : Springer Science & Business Media
ISBN 13 : 9400981023
Total Pages : 343 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Methane Production from Agricultural and Domestic Wastes by : Hobson

Download or read book Methane Production from Agricultural and Domestic Wastes written by Hobson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume in the Energy from Wastes Series covers the area of methane production from agricultural and domestic wastes. Principally this involves the conversion of excreta and other organic effluents to a valuable gaseous fuel plus, in many cases, a useful sludge for fertiliser or feedstuffs. Dr Hobson and his colleagues have written a comprehensive text on the principles of microbiological processes and the biochemistry of anaerobic digestion, embracing the design of digesters with examples of current working installations. The potential for anaerobic digestion of wastes as diverse as sewage to fruit processing effluents is also reviewed. This work should be of interest to all who have to manage organic waste treatment and disposal, as well as to a wider readership who wish to know more about methane production by anaerobic digestion. ANDREW PORTEOUS v Preface The production of methane, or more exactly, a flammable 'biogas' containing methane and carbon dioxide, by microbiological methods ('anaerobic digestion') is not new. The reactions have been in industrial use for over a hundred years, but only in sewage purification processes. In some times of national stress, such as war-time, the microbiological production of gas purely for fuel has been investigated, but with the resumption of plentiful su pplies of fossil fuels the investigations have faded awa y.

Increased Biogas Production by Anaerobic Co-digestion of Wastewater Sludge with Fruit and Vegetable Waste, and by Sludge Pre-treatment

Download Increased Biogas Production by Anaerobic Co-digestion of Wastewater Sludge with Fruit and Vegetable Waste, and by Sludge Pre-treatment PDF Online Free

Author : Nathan D. Park
Publisher :
ISBN 13 :
Total Pages : 242 pages
Book Rating : 4.:/5 (778 download)

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Book Synopsis Increased Biogas Production by Anaerobic Co-digestion of Wastewater Sludge with Fruit and Vegetable Waste, and by Sludge Pre-treatment by : Nathan D. Park

Download or read book Increased Biogas Production by Anaerobic Co-digestion of Wastewater Sludge with Fruit and Vegetable Waste, and by Sludge Pre-treatment written by Nathan D. Park and published by . This book was released on 2012 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Full scale anaerobic co-digestion of fruit and vegetable waste (FVW) and municipal wastewater primary sludge significantly increased biogas production. Digester operation remained stable. Undigested FVW was visible in dewatered sludge suggesting that FVW should be added to the first stage digester to prevent short-circuiting and increase the hydraulic retention time (HRT) of the FVW. Batch lab results confirmed that co-digestate addition to first stage sludge (FSS) is preferred to second stage sludge (SSS). FSS produced significantly more methane (514 ± 57 L CH4 kgVS−1 added) than SSS (392 ± 16 L CH4 kgVS−1 added). In a related study, combined alkaline and ultrasonic pre-treatment of thermomechanical pulp mill sludge (PMS) significantly increased the soluble TS, VS and COD of the PMS over non-treated sludge. Pre-treatment did not significantly improve biogas production over 28 d, but did increase VS reduction, and the initial rate of methane production. Overall, biogas production from PMS was inconsistent."--P. ii.

Anaerobic Digestion of Solid Waste and Sewage Sludge to Methane

Author : Steven J. Hitte
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Anaerobic Digestion of Solid Waste and Sewage Sludge to Methane by : Steven J. Hitte

Download or read book Anaerobic Digestion of Solid Waste and Sewage Sludge to Methane written by Steven J. Hitte and published by . This book was released on 1975 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Mesophilic Anaerobic Co-digestion of Municipal Wastewater Sludge and Un-dewatered Grease Trap Waste

Author : Sedat Yalcinkaya
Publisher :
ISBN 13 :
Total Pages : 258 pages
Book Rating : 4.:/5 (93 download)

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Book Synopsis Mesophilic Anaerobic Co-digestion of Municipal Wastewater Sludge and Un-dewatered Grease Trap Waste by : Sedat Yalcinkaya

Download or read book Mesophilic Anaerobic Co-digestion of Municipal Wastewater Sludge and Un-dewatered Grease Trap Waste written by Sedat Yalcinkaya and published by . This book was released on 2014 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fat, oil, and grease residues, food particles, solids and some kitchen wastewaters are collected in grease traps which are separate from the municipal wastewater stream. Grease traps are emptied periodically and grease trap waste (GTW) is hauled for treatment. This dissertation focuses on anaerobic co-digestion of un-dewatered (raw) GTW with municipal wastewater treatment sludge (MWS) at wastewater treatment plants. In particular, this research focuses on the biochemical methane potential of un-dewatered GTW as well as the stability and performance of anaerobic co-digestion of MWS and un-dewatered GTW. A set of modified biochemical methane potential tests was performed to determine the methane potential of un-dewatered GTW under mesophilic conditions (35 °C). Methane potential of un-dewatered GTW in this study was 606 mL CH4/g VS [subscript added] which is less than previously reported methane potentials of 845 - 1050 mL CH4/g VS [subscript added] for concentrated/dewatered GTW. However, the methane potential of un-dewatered GTW (606 mL CH4/g VS [subscript added]) was more than two times greater than the 223 mL CH4/g VS [subscript added] reported for MWS digestion alone. A comprehensive study was performed to determine the stability and performance of anaerobic co-digestion of MWS with un-dewatered GTW as a function of increasing GTW feed ratios. The performance of two semi-continuously fed anaerobic digesters at 35 °C was evaluated as a function of increasing GTW feed ratios. Anaerobic co-digestion of MWS with un-dewatered GTW at a 46% GTW feed ratio (on a volatile solids basis) resulted in a 67% increase in methane production and a 26% increase in volatile solids reduction compared to anaerobic digestion of MWS alone. On the other hand, anaerobic co-digestion of un-dewatered GTW resulted in a higher inhibition threshold (46% on VS basis) than that of dewatered GTW. These results indicate that using un-dewatered GTW instead of dewatered GTW can reduce the inhibition risk of anaerobic co-digestion of MWS and GTW. Recovery of the anaerobic digesters following upset conditions was also evaluated and semi-continuous feed of digester effluent into upset digesters yielded of the biogas production level of the undisrupted digestion. Finally, a mathematical model was used to describe the relationship between methane potential and GTW feed ratio on a VS basis. The results of this research can be used to predict methane production and identify suitable GTW feeding ratios for successful co-digestion of un-dewatered GTW and MWS.

Sustainable Bioenergy Production

Author : Lijun Wang
Publisher : CRC Press
ISBN 13 : 1466505524
Total Pages : 586 pages
Book Rating : 4.4/5 (665 download)

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Book Synopsis Sustainable Bioenergy Production by : Lijun Wang

Download or read book Sustainable Bioenergy Production written by Lijun Wang and published by CRC Press. This book was released on 2014-04-18 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given the environmental concerns and declining availability of fossil fuels, as well as the growing population worldwide, it is essential to move toward a sustainable bioenergy-based economy. However, it is also imperative to address sustainability in the bioenergy industry in order to avoid depleting necessary biomass resources. Sustainable Bioenergy Production provides comprehensive knowledge and skills for the analysis and design of sustainable biomass production, bioenergy processing, and biorefinery systems for professionals in the bioenergy field. Focusing on topics vital to the sustainability of the bioenergy industry, this book is divided into four sections: Fundamentals of Engineering Analysis and Design of Bioenergy Production Systems, Sustainable Biomass Production and Supply Logistics, Sustainable Bioenergy Processing, and Sustainable Biorefinery Systems. Section I covers the fundamentals of genetic engineering, novel breeding, and cropping technologies applied in the development of energy crops. It discusses modern computational tools used in the design and analysis of bioenergy production systems and the life-cycle assessment for evaluating the environmental sustainability of biomass production and bioenergy processing technologies. Section II focuses on the technical and economic feasibility and environmental sustainability of various biomass feedstocks and emerging technologies to improve feedstock sustainability. Section III addresses the technical and economic feasibility and environmental sustainability of different bioenergy processing technologies and emerging technologies to improve the sustainability of each bioenergy process. Section IV discusses the design and analysis of biorefineries and different biorefinery systems, including lignocellulosic feedstock, whole-crop, and green biorefinery.

Anaerobic Co-digestion of Municipal Sludge and Restaurant Grease

Author : Zengkai Liu
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659536687
Total Pages : 88 pages
Book Rating : 4.5/5 (366 download)

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Book Synopsis Anaerobic Co-digestion of Municipal Sludge and Restaurant Grease by : Zengkai Liu

Download or read book Anaerobic Co-digestion of Municipal Sludge and Restaurant Grease written by Zengkai Liu and published by LAP Lambert Academic Publishing. This book was released on 2014-04-30 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anaerobic codigestion of municipal wastewater sludge and restaurant grease was investigated in a semi-continuous lab-scale digestion experiment under mesophilic condition (37 C). Compared to the control digester, COD loading rate for test digester was elevated to 387% (organic loading rate 4.235 kgVS/m3/d) and led to 467% increase in daily biogas production, 25.2% increase in methane yield (based on VS deduction), 29.8% increase in COD reduction rate and 27.2% increase in VS reduction rate, respectively. Methane content ranged from 62% to 67%. There was no negative effect of grease addition on the digester performance in this experiment. The great increases in biogas production and methane yield indicated enhanced digestion performance. In addition, partial alkalinity and pH proved to be good indicators to monitor digestion process and predict overloading. It is still possible to keep increasing organic loading by the addition of more grease, but according to monitoring results, the system was close to overloading.

Improving the Methane Production in the Co-Digestion of Microalgae and Cattle Manure

Author : Matthew Scott Cantu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (93 download)

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Book Synopsis Improving the Methane Production in the Co-Digestion of Microalgae and Cattle Manure by : Matthew Scott Cantu

Download or read book Improving the Methane Production in the Co-Digestion of Microalgae and Cattle Manure written by Matthew Scott Cantu and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this thesis is to evaluate the effects from various treatments in the anaerobic digestion of cattle manure when mixed with microalgae. The analysis would focus on two primary subjects: the effects of different treatments on the microalgae sludge, and the balancing of the carbon-to-nitrogen ratio. The results of this experiment would give a viable estimate on the possible methane production from co-digestion of these resources. At the conclusion of the experiment, it was found that biogas production increased when algae was added to the digester. The highest methane production in the control groups, containing only manure, digestion sludge, and newsprint was 48120 L, while the highest in the mixtures containing algae and pretreated algae were 71170 L and 87715 L, respectively. Based on volatile solids, the highest production in the control groups was0.36 (L CH4)/(g VS), while the production rates in the algae and pretreated algae mixtures were 0.22 (L CH4)/(g VS) and 0.44 (L CH4)/(g VS), respectively. This shows that the presence of algae increases the overall methane production, but is hindered by inhibitory factors contributing to ineffectiveness in the overall digestion process. The effects of carbon balancing for the carbon-to-nitrogen ratio also showed that overall, mixtures balanced at 25:1 carbon-to-nitrogen yielded more biogas. The exception is the normal algae mixture, in which the optimal ratio was 20:1. In conclusion, the anaerobic co-digestion of cattle manure with pretreated algae, when balanced for carbon and nitrogen, can severely increase methane production rates. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/152539

Progress in Microalgae Research

Author : Leila Queiroz Zepka
Publisher : BoD – Books on Demand
ISBN 13 : 1803560231
Total Pages : 321 pages
Book Rating : 4.8/5 (35 download)

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Book Synopsis Progress in Microalgae Research by : Leila Queiroz Zepka

Download or read book Progress in Microalgae Research written by Leila Queiroz Zepka and published by BoD – Books on Demand. This book was released on 2022-11-02 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Microalgae Research - A Path for Shaping Sustainable Futures consolidates the latest research, developments, and advances in the field of microalgae biotechnology. The book’s chapters take a close look at and highlight the wide commercial potential of microalgae-based processes and products. This book is a useful resource for researchers and academic and industry professionals in the field of microalgae biotechnology.

Anaerobic Co-digestion of Swine Wastewater with Switchgrass and Wheat Straw for Methane Production

Author : Zhimin Liu
Publisher :
ISBN 13 :
Total Pages : 85 pages
Book Rating : 4.:/5 (881 download)

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Book Synopsis Anaerobic Co-digestion of Swine Wastewater with Switchgrass and Wheat Straw for Methane Production by : Zhimin Liu

Download or read book Anaerobic Co-digestion of Swine Wastewater with Switchgrass and Wheat Straw for Methane Production written by Zhimin Liu and published by . This book was released on 2013 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Enhancing the Methane Production from Untreated Rice Straw Using an Anaerobic Co-digestion Approach with Piggery Wastewater and Pulp and Paper Mill Sludge to Optimize Energy Conversion in Farm-scale Biogas Plants

Download Enhancing the Methane Production from Untreated Rice Straw Using an Anaerobic Co-digestion Approach with Piggery Wastewater and Pulp and Paper Mill Sludge to Optimize Energy Conversion in Farm-scale Biogas Plants PDF Online Free

Author : Wendy Mussoline
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (88 download)

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Book Synopsis Enhancing the Methane Production from Untreated Rice Straw Using an Anaerobic Co-digestion Approach with Piggery Wastewater and Pulp and Paper Mill Sludge to Optimize Energy Conversion in Farm-scale Biogas Plants by : Wendy Mussoline

Download or read book Enhancing the Methane Production from Untreated Rice Straw Using an Anaerobic Co-digestion Approach with Piggery Wastewater and Pulp and Paper Mill Sludge to Optimize Energy Conversion in Farm-scale Biogas Plants written by Wendy Mussoline and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research describes an optimized waste-to-energy technology that utilizes agricultural residues for renewable energy, while reducing global methane emissions and maintaining food security. Laboratory-, pilot- and farm-scale anaerobic batch digesters were evaluated to enhance methane production from the anaerobic digestion of untreated rice straw in dry conditions using a novel co-digestion approach. An existing farm-scale biogas plant loaded with rice straw and piggery wastewater produced 295 MWh in a 422-day digestion cycle. The long acclimation period (approximately 200 days) and low biogas yield (181 LCH4/kgVS) could be enhanced by adding anaerobic sludge from the pulp and paper mill treatment process. In a laboratory setting, the addition of the sludge resulted in a specific methane yield of 335 LCH4/kgVS within 92 days. Hydrolysis of the straw was accelerated, and stable conditions were observed in terms of pH, alkalinity and nutrients. Similar improvements were demonstrated in pilot-scale digesters (1 m3) - a specific methane yield of 231 LCH4/kgVS was achieved in a 93-day digestion cycle with the sludge compared to 189 days without the sludge. Insufficient mixing within the pilot-scale system caused lower overall methane yields than those obtained in the laboratory-scale digesters. If sufficient mixing and mesophilic conditions are maintained within the farm-scale system, the co-digestion of rice straw with pig wastewater and paper mill sludge (wet weight ratio of 1:1.25:0.5) has the potential to reduce the retention time to three months (versus 422 days) and increase methane yields to over 300 LCH4/kgVS.

Algal Technologies for Wastewater Treatment and Resource Recovery

Author : Raul Muñoz
Publisher : IWA Publishing
ISBN 13 : 1789060923
Total Pages : 254 pages
Book Rating : 4.7/5 (89 download)

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Book Synopsis Algal Technologies for Wastewater Treatment and Resource Recovery by : Raul Muñoz

Download or read book Algal Technologies for Wastewater Treatment and Resource Recovery written by Raul Muñoz and published by IWA Publishing. This book was released on 2019-07-26 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 80% of globally produced wastewater receives little or no treatment before it is disposed into the environment. Therefore, it is urgent to develop new wastewater treatment technologies that are sustainable in the broad sense of the word, i.e. not only produce high quality effluents, but also minimise energy expenses, recover energy and nutrients, and apply technology that is appropriate in relation to the availability of skilled personnel. This book compiles the main outcomes of recent efforts to improve the design of waste stabilisation ponds, and confirms the superior performance of high rate algal ponds as a result of process intensification. Anaerobic digestion devoted to biogas production continues to be the preferred strategy for the energy valorisation of the algal biomass, co-digestion with multiple high C/N ratio substrates gathering significant attention over the past years. The potential of algal biomass as a biosorbent for heavy metal removal (Cu, Ni, F) maintains its share in the research field of water bioremediation, while research on nutrient removal has focused on providing new insights on the mechanism of nitrogen and phosphorus removal from wastewater in algal–bacterial systems. Finally, it is worth noticing that breakthroughs in complementary fields of research such as nanotechnology or lighting technology are gradually being implemented in algal biotechnology, with new products such as nanoparticles for water disinfection or photobioreactors illuminated by low intensity LED panels. In Focus – a book series that showcases the latest accomplishments in water research. Each book focuses on a specialist area with papers from top experts in the field. It aims to be a vehicle for in-depth understanding and inspire further conversations in the sector.

METHANE PRODUCTION FROM WASTE ORGANIC MATTER

Author : Stafford
Publisher : Springer
ISBN 13 :
Total Pages : 304 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis METHANE PRODUCTION FROM WASTE ORGANIC MATTER by : Stafford

Download or read book METHANE PRODUCTION FROM WASTE ORGANIC MATTER written by Stafford and published by Springer. This book was released on 1980 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Methane Production from Agricultural and Domestic Wastes

Author : Hobson
Publisher : Springer
ISBN 13 : 9789400981041
Total Pages : 270 pages
Book Rating : 4.9/5 (81 download)

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Book Synopsis Methane Production from Agricultural and Domestic Wastes by : Hobson

Download or read book Methane Production from Agricultural and Domestic Wastes written by Hobson and published by Springer. This book was released on 2011-11-11 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume in the Energy from Wastes Series covers the area of methane production from agricultural and domestic wastes. Principally this involves the conversion of excreta and other organic effluents to a valuable gaseous fuel plus, in many cases, a useful sludge for fertiliser or feedstuffs. Dr Hobson and his colleagues have written a comprehensive text on the principles of microbiological processes and the biochemistry of anaerobic digestion, embracing the design of digesters with examples of current working installations. The potential for anaerobic digestion of wastes as diverse as sewage to fruit processing effluents is also reviewed. This work should be of interest to all who have to manage organic waste treatment and disposal, as well as to a wider readership who wish to know more about methane production by anaerobic digestion. ANDREW PORTEOUS v Preface The production of methane, or more exactly, a flammable 'biogas' containing methane and carbon dioxide, by microbiological methods ('anaerobic digestion') is not new. The reactions have been in industrial use for over a hundred years, but only in sewage purification processes. In some times of national stress, such as war-time, the microbiological production of gas purely for fuel has been investigated, but with the resumption of plentiful su pplies of fossil fuels the investigations have faded awa y.

Handbook of Microalgae-Based Processes and Products

Author : Eduardo Jacob-Lopes
Publisher : Academic Press
ISBN 13 : 0128185376
Total Pages : 938 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Handbook of Microalgae-Based Processes and Products by : Eduardo Jacob-Lopes

Download or read book Handbook of Microalgae-Based Processes and Products written by Eduardo Jacob-Lopes and published by Academic Press. This book was released on 2020-07-23 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Microalgae-based Processes and Products provides a complete overview of all aspects involved in the production and utilization of microalgae resources at commercial scale. Divided into four parts (fundamentals, microalgae-based processes, microalgae-based products, and engineering approaches applied to microalgal processes and products), the book explores the microbiology and metabolic aspects of microalgae, microalgal production systems, wastewater treatment based in microalgae, CO2 capture using microalgae, microalgae harvesting techniques, and extraction and purification of biomolecules from microalgae. It covers the largest number of microalgal products of commercial relevance, including biogas, biodiesel, bioethanol, biohydrogen, single-cell protein, single-cell oil, biofertilizers, pigments, polyunsaturated fatty acids, bioactive proteins, peptides and amino acids, bioactive polysaccharides, sterols, bioplastics, UV-screening compounds, and volatile organic compounds. Moreover, it presents and discusses the available engineering tools applied to microalgae biotechnology, such as process integration, process intensification, and techno-economic analysis applied to microalgal processes and products, microalgal biorefineries, life cycle assessment, and exergy analysis of microalgae-based processes and products. The coverage of a broad range of potential microalgae processes and products in a single volume makes this handbook an indispensable reference for engineering researchers in academia and industry in the fields of bioenergy, sustainable development, and high-value compounds from biomass, as well as graduate students exploring those areas. Engineering professionals in bio-based industries will also find valuable information here when planning or implementing the use of microalgal technologies. - Covers theoretical background information and results of recent research. - Discusses all commercially relevant microalgae-based processes and products. - Explores the main emerging engineering tools applied to microalgae processes, including techno-economic analysis, process integration, process intensification, life cycle assessment, and exergy analyses.