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Treatment Of Biomass Gasification Wastewaters Using Reverse Osmosis
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Book Synopsis Treatment of Biomass Gasification Wastewaters Using Reverse Osmosis by :
Download or read book Treatment of Biomass Gasification Wastewaters Using Reverse Osmosis written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Reverse osmosis (RO) was evaluated as a treatment technology for the removal of organics from biomass gasification wastewaters (BGW) generated from an experimental biomass gasifier at Texas Tech University. Wastewaters were characteristically high in chemical oxygen demand (COD) with initial values ranging from 32,000 to 68,000 mg/1. Since RO is normally considered a complementary treatment technology, wastewaters were pretreated by biological or wet air oxidation (WAO) processes. One set of experiments were run using untreated wastewaters to compare membrane performance with those experiments using pretreated wastewaters. Experiments were run for 8 to 10 hrs using UOP's TFC-85 membrane operating at 700 psig and 18 to 20°C. This membrane is similar to the NS-100, a membrane known for being effective in the separation of organics from solution. Separation of organics from solution was determined by COD removal. Removal percentages for biologically pretreated wastewaters averaged 98% except for one group of runs averaging 69% removal. This exception was probably due to the presence of milk solids in the feed. Use of RO on WAO pretreated wastewaters and unpretreated feeds resulted in 90% COD removal. Membrane degradation was observed when using full-strength and WAO pretreated feeds, but not when using feeds that had undergone biological pretreatment. Color removal was computed for the majority of experiments completed. Overall, 99 to 100% of the total color was removed from BGW feeds, values which coincide with those reported in the literature for other wastewaters.
Book Synopsis Treatment of Biomass Gasification Wastewater Using Wet Air Oxidation, Solvent Extraction, and Reverse Osmosis by : Stephen E. Petty
Download or read book Treatment of Biomass Gasification Wastewater Using Wet Air Oxidation, Solvent Extraction, and Reverse Osmosis written by Stephen E. Petty and published by . This book was released on 1981 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1986 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1983 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy written by and published by . This book was released on with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fossil Energy Update written by and published by . This book was released on 1982 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wastewater Treatment by Reverse Osmosis Process by : Mudhar Al-Obaidi
Download or read book Wastewater Treatment by Reverse Osmosis Process written by Mudhar Al-Obaidi and published by CRC Press. This book was released on 2020-02-25 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wastewater Treatment by Reverse Osmosis Process provides a one-stop-shop for reverse osmosis (RO), outlining its scope and limitations for the removal of organic compounds from wastewater. This book covers the state-of-the-art on RO processes and describes ten RO process models of different features and complexities. It also covers the advanced model-based techniques for RO process operations, including various rigorous methods for process modelling, simulation, and optimization at the lowest energy cost, as well as advanced tools such as genetic algorithms for achieving the same. • Highlights different types of physico–chemical and biological wastewater treatment methods including hybrid systems • Provides an overview of membrane processes, focuses on different types of membrane processes for water treatment and explains characteristics of membrane modules • Introduces the importance and challenges of process modelling for simulation, design, and optimization and offers examples across various industries •Describes the concept of different types of genetic algorithms for process optimisation and provides the state-of-the art of the GA method in terms of its application in water desalination and wastewater treatment •Emphasizes economic aspects of RO processes for wastewater treatment With its focus on the challenges posed by an increasing demand for fresh water and the urgent need to recycle wastewater at minimum cost, this work is an invaluable resource for engineers and scientists working within the field of wastewater treatment.
Download or read book Solar Energy Update written by and published by . This book was released on 1982-07 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Pollution & Control by :
Download or read book Environmental Pollution & Control written by and published by . This book was released on 1983 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Energy: a Continuing Bibliography with Indexes by :
Download or read book Energy: a Continuing Bibliography with Indexes written by and published by . This book was released on 1982 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Treatment of Biomass Gasification Wastewaters Using Liquid-liquid Extraction by :
Download or read book Treatment of Biomass Gasification Wastewaters Using Liquid-liquid Extraction written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Pacific Northwest Laboratory (PNL) investigated liquid-liquid extraction as a treatment method for biomass gasification wastewaters (BGW). Distribution coefficients for chemical oxygen demand (COD) removal were determined for the following solvents: methylisobutyl ketone (MIBK), n-butyl acetate, n-butanol, MIBK/n-butyl acetate (50:50 vol), MIBK/n-butanol (50:50 vol), tri-butyl phosphate, tri-n-octyl phosphine oxide (TOPO)/MIBK (10:90 wt), TOPO/kerosene (10:90 wt), kerosene, and toluene. The best distribution coefficient of 1.3 was given by n-butanol. Chemical analysis of the wastewater by gas chromatography (GC) showed acetic acid and propionic acid concentrations of about 4000 mg/1. Methanol, ethanol, and acetone were identified in trace amounts. These five compounds accounted for 45% of the measured COD of 29,000 mg/1. Because of the presence of carboxylic acids, pH was expected to affect extraction of the wastewater. At low pH the acids should be in the acidic form, which increased extraction by MIBK. Extraction by n-butanol was increased at high pH, where the acids should be in the ionic form.
Book Synopsis Treatment of Biomass Gasification Wastewaters by Wet Air Oxidation by :
Download or read book Treatment of Biomass Gasification Wastewaters by Wet Air Oxidation written by and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Treatment of Biomass Gasification Wastewater Using a Combined Wet Air Oxidation/activated Sludge Process by :
Download or read book Treatment of Biomass Gasification Wastewater Using a Combined Wet Air Oxidation/activated Sludge Process written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A lab-scale treatability study for using thermal and biological oxidation to treat a biomass gasification wastewater (BGW) having a chemical oxygen demand (COD) of 46,000 mg/l is described. Wet air oxidation (WA0) at 300°C and 13.8 MPa (2000 psi) was used to initially treat the BGW and resulted in a COD reduction of 74%. This was followed by conventional activated sludge treatment using operating conditions typical of municipal sewage treatment plants. This resulted in an additional 95% COD removal. Overall COD reduction for the combined process was 99%. A detailed chemical analysis of the raw BGW and thermal and biological effluents was performed using gas chromatography/mass spectrometry (GC/MS). These results showed a 97% decrease in total extractable organics with WA0 and a 99.6% decrease for combined WA0 and activated sludge treatment. Components of the treated waters tended to be fewer in number and more highly oxidized. An experiment was conducted to determine the amount of COD reduction caused by volatilization during biological treatment. Unfortunately, this did not yield conclusive results. Treatment of BGW using WA0 followed by activated sludge appears to be very effective and investigations at a larger scale are recommended.
Book Synopsis Energy, a Continuing Bibliography with Indexes. Issue 33 by :
Download or read book Energy, a Continuing Bibliography with Indexes. Issue 33 written by and published by . This book was released on 1982 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biomass Wastes for Energy Production by : Eliseu Monteiro
Download or read book Biomass Wastes for Energy Production written by Eliseu Monteiro and published by MDPI. This book was released on 2021-09-02 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental problems are forcing a rethinking of the world’s energy supply system. In parallel, there is an increasing amount of global solid waste production. A fundamental shift toward greater reliance on biomass wastes in the world’s energy system is plausible because of ongoing major technological advances that hold the promise of making the conversion of biomass into high-quality energy carriers, like electricity and gaseous or liquid fuels, economically competitive with fossil fuels. Therefore, waste-to-energy systems have become a paramount topic for both industry and researchers due to interest in energy production from waste and improved chemical and thermal efficiencies with more cost-effective designs. This biomass shift is also important for industries to become more efficient by using their own wastes to produce their own energy in the light of the circular economy concept. This book on “Biomass Wastes for Energy Production” brings novel advances on waste-to-energy technologies, life cycle assessment, and computational models, and contributes to promoting rethinking of the world’s energy supply systems.
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Concept of Zero Liquid Discharge by : Chaudhery Mustansar Hussain
Download or read book Concept of Zero Liquid Discharge written by Chaudhery Mustansar Hussain and published by Elsevier. This book was released on 2023-07-28 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concept of Zero Liquid Discharge: Innovations and Advances for Sustainable Wastewater Management provides fundamental and in-depth knowledge on the need for ZLD and conventional and modern technologies, along with the various strategies available to achieve ZLD. The book covers various wastewater treatment technologies that lead to ZLD, integrated wastewater treatment approaches, challenges faced by industries in meeting ZLD goals, and solutions leading to cleaner technologies. In addition, it presents the state-of-the-art technologies and multidisciplinary research underway in the field to address existing challenges and provide future directions. This will be an important reference for postgraduate students in environmental science and engineering as well as high-level researchers, professors, experts and engineers who conduct research and practices in the area of zero liquid discharge (ZLD) approaches, sustainable wastewater management and related fields. Presents the latest knowledge on the need, goals, benefits and consequences of adoption of ZLD for industries, the environment and the public Provides information on the modern tools needed to address ZLD challenges, along with modern and novel technologies available for ZLD systems and recent research in the field Includes global case studies and real-life examples on how this method has been effectively implemented
