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Phosphate Precipitation With Ferrous Iron
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Book Synopsis Phosphate Precipitation with Ferrous Iron by : Masood Ghassemi
Download or read book Phosphate Precipitation with Ferrous Iron written by Masood Ghassemi and published by . This book was released on 1971 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of a number of methods available for phosphate removal from waste water, chemical precipitation (often called coagulation) using aluminum, ferric iron, ferrous iron and lime is considered to be the most economical. The objective of the present study has been two-fold: To evaluate the effects of pH and reactant concentration on the rate and efficiency of phosphate removal from synthetic and secondary effluent wastewaters and on the nature of the precipitates formed; and to compare the data on the Fe(II)-phosphate precipitation system with the available data for Fe(III)- and Al(III)-phosphate systems. Most of the experiments in the study were conducted on pure orthophosphate solutions and in the absence of dissolved oxygen. Only a limited number of tests were made of the use of ferrous iron for orthophosphate removal from wastewaters containing dissolved oxygen.
Book Synopsis Phosphate Precipitation with Ferrous Iron by : Masood Ghassemi
Download or read book Phosphate Precipitation with Ferrous Iron written by Masood Ghassemi and published by . This book was released on 1971 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphate Precipitation with Ferrous Iron by : U. S. Environmental Protection Agency
Download or read book Phosphate Precipitation with Ferrous Iron written by U. S. Environmental Protection Agency and published by BiblioGov. This book was released on 2013-07 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Environmental Protection Agency (EPA) was introduced on December 2, 1970 by President Richard Nixon. The agency is charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress. The EPA's struggle to protect health and the environment is seen through each of its official publications. These publications outline new policies, detail problems with enforcing laws, document the need for new legislation, and describe new tactics to use to solve these issues. This collection of publications ranges from historic documents to reports released in the new millennium, and features works like: Bicycle for a Better Environment, Health Effects of Increasing Sulfur Oxides Emissions Draft, and Women and Environmental Health.
Book Synopsis Phosphate Precipitation with Ferrous Iron [with List of References] by :
Download or read book Phosphate Precipitation with Ferrous Iron [with List of References] written by and published by . This book was released on 1971 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Kinetics and Mechanism of Precipitation and Nature of the Precipitate Obtained in Phosphate Removal from Wastewater Using Aluminum (III) and Iron (III) Salts by : Howard Leonard Recht
Download or read book Kinetics and Mechanism of Precipitation and Nature of the Precipitate Obtained in Phosphate Removal from Wastewater Using Aluminum (III) and Iron (III) Salts written by Howard Leonard Recht and published by . This book was released on 1970 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Precipitation of Orthophosphate with Ferrous Iron in an Anaerobic Aquatic Environment by : Stephen Harland Roberts
Download or read book Precipitation of Orthophosphate with Ferrous Iron in an Anaerobic Aquatic Environment written by Stephen Harland Roberts and published by . This book was released on 1976 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphorus and Nitrogen Removal from Municipal Wastewater by : Richard I. Sedlak
Download or read book Phosphorus and Nitrogen Removal from Municipal Wastewater written by Richard I. Sedlak and published by CRC Press. This book was released on 1991-10-07 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This valuable new book offers practical guidance regarding the design and operation of systems for reducing effluent nitrogen and phosphorus. The principles of nitrogen and phosphorus removal are discussed, including sources of nitrogen and phosphorus in wastewater, removal options, nitrogen and phosphorus transformations in treatment, process selection, and treatment. The book also covers the design and operation of nitrogen and phosphorus removal systems, including system options, system design, facility design, facility costs, and operation. Practical case studies are provided as examples of successful system implementations that may be able to help you decide what will work best in your plant.
Book Synopsis Water Pollution Control Research Series 17010 ELP 05/71 by : United States. Envrionmental Protection Agency
Download or read book Water Pollution Control Research Series 17010 ELP 05/71 written by United States. Envrionmental Protection Agency and published by . This book was released on 1971 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Kinetics and Mechanism of Precipitation and Nature of the Precipitate Obtained in Phosphate Removal from Wastewater Using Aluminum (III) and Iron (III) Salts by : Howard Leonard Recht
Download or read book Kinetics and Mechanism of Precipitation and Nature of the Precipitate Obtained in Phosphate Removal from Wastewater Using Aluminum (III) and Iron (III) Salts written by Howard Leonard Recht and published by . This book was released on 1970 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparison of Iron (III) and Aluminum in Precipitation of Phosphate from Solution by : Pa Ho Hsu
Download or read book Comparison of Iron (III) and Aluminum in Precipitation of Phosphate from Solution written by Pa Ho Hsu and published by . This book was released on 1976 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphorus in Environmental Technology by : E. Valsami-Jones
Download or read book Phosphorus in Environmental Technology written by E. Valsami-Jones and published by IWA Publishing. This book was released on 2004-05-31 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phosphorus in Environmental Technology: Principles and Applications, provides a definitive and detailed presentation of state-of-the-art knowledge on the environmental behaviour of phosphorus and its applications to the treatment of waters and soils. Special attention is given to phosphorus removal for recovery technologies, a concept that has emerged over the past 5-6 years. The book features an all-encompassing approach: the fundamental science of phosphorus (chemistry, geochemistry, mineralogy, biology), key aspects of its environmental behaviour and mobility, industrial applications (treatment, removal, recovery) and the principles behind such applications, novel biotechnologies and, importantly, it also addresses socio-economic issues which often influence implementation and the ultimate success of any new technology. A detailed subject index helps the reader to find their way through the different scientific and technological aspects covered, making it an invaluable reference work for students, professionals and consultants dealing with phosphorus-related environmental technologies. State-of-the-art knowledge on the behaviour of phosphorus and its applications to environmental science and technology. Covers all aspects of phosphorus in the environment, engineered and biological systems; an interdisciplinary text.
Book Synopsis Biogeochemistry of Wetlands by : K. Ramesh Reddy
Download or read book Biogeochemistry of Wetlands written by K. Ramesh Reddy and published by CRC Press. This book was released on 2022-09-10 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: The globally important nature of wetland ecosystems has led to their increased protection and restoration as well as their use in engineered systems. Underpinning the beneficial functions of wetlands are a unique suite of physical, chemical, and biological processes that regulate elemental cycling in soils and the water column. This book provides an in-depth coverage of these wetland biogeochemical processes related to the cycling of macroelements including carbon, nitrogen, phosphorus, and sulfur, secondary and trace elements, and toxic organic compounds. In this synthesis, the authors combine more than 100 years of experience studying wetlands and biogeochemistry to look inside the black box of elemental transformations in wetland ecosystems. This new edition is updated throughout to include more topics and provide an integrated view of the coupled nature of biogeochemical cycles in wetland systems. The influence of the elemental cycles is discussed at a range of scales in the context of environmental change including climate, sea level rise, and water quality. Frequent examples of key methods and major case studies are also included to help the reader extend the basic theories for application in their own system. Some of the major topics discussed are: Flooded soil and sediment characteristics Aerobic-anaerobic interfaces Redox chemistry in flooded soil and sediment systems Anaerobic microbial metabolism Plant adaptations to reducing conditions Regulators of organic matter decomposition and accretion Major nutrient sources and sinks Greenhouse gas production and emission Elemental flux processes Remediation of contaminated soils and sediments Coupled C-N-P-S processes Consequences of environmental change in wetlands# The book provides the foundation for a basic understanding of key biogeochemical processes and its applications to solve real world problems. It is detailed, but also assists the reader with box inserts, artfully designed diagrams, and summary tables all supported by numerous current references. This book is an excellent resource for senior undergraduates and graduate students studying ecosystem biogeochemistry with a focus in wetlands and aquatic systems.
Book Synopsis Precipitation and Coagulation of Phosphate by Iron (III). by : Thomas Ernest Higgins
Download or read book Precipitation and Coagulation of Phosphate by Iron (III). written by Thomas Ernest Higgins and published by . This book was released on 1975 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Iron-Facilitated Chemical and Biological Process for Phosphorus Removal and Recovery During Wastewater Treatment by : Kang Zhao
Download or read book An Iron-Facilitated Chemical and Biological Process for Phosphorus Removal and Recovery During Wastewater Treatment written by Kang Zhao and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "An Iron-facilitated Chemical and Biological Process for Phosphorus Removal and Recovery During Wastewater Treatment" by Kang, Zhao, 趙鈧, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Phosphorus (P) is an important pollutant of concern in wastewater that causes eutrophication and algal blooms in water body. On the other hand, P is a valuable natural resource for agricultural and industrial use. With the rapid depletion of mineral phosphorus on earth, there is a need to recover phosphorus from wastewater. In this study, a new chemical and biological process facilitated with iron dosing has been developed for P removal and recovery during wastewater treatment. The system consists of a main stream identical to the conventional activated sludge process in an aerobic sequencing batch reactor (SBR) for P removal and a side stream of sludge recirculation through an anaerobic SBR (AnSBR) for P release and recovery from the P-rich sludge. In the aerobic SBR treating a synthetic domestic wastewater, Fe(III) (FeCl3) was dosed to remove P by precipitation and adsorption. Fe(III) dosing at a Fe/P molar ratio of 1.5:1 could reduce the P concentration from more than 10 mg/L to below 1 mg/L in the final effluent. Compared to other dosing periods, dosing Fe(III) right before the SBR settling could achieve the best result in sludge flocculation and P removal. Meanwhile, organic removal was well maintained as 90% of the chemical oxygen demand (COD) was degraded in the aerobic SBR. In the AnSBR, phosphate precipitated with ferric iron in the sludge was released owing to microbial Fe(III) reduction, and a positive correlation was found between the phosphate and ferrous iron concentrations in the sludge suspension. Chemical tests showed that significant P release from Fe(III)-P occurred only if the acidic condition and the reducing condition were combined. For the AnSBR sludge, a higher organic loading, lower pH and higher biomass concentration resulted in a higher level of Fe(III) reduction and P release. Organic acidogenesis prevailed in the reactor and lowered the pH to 4.5, which facilitated the P release from the solid phase into the liquid phase. With a solids retention time (SRT) of 10 days, the anaerobic supernatant contained a phosphate concentration of up to 70 mg/L, while the settled sludge was returned to the aerobic SBR. The phosphate could be readily recovered from the supernatant with Fe-induced precipitation by aeration and pH adjustment, and the overall P recovery could be achieved at about 70%. In addition to the treatment performance, the speciation of P in the aerobic sludge and the anaerobic sludge also was investigated. A significant change in the immediately available P and the redox-sensitive P was found in the sludge through the aerobic-anaerobic cycle. Such chemical transformation is believed to be crucial to the P removal and recovery during the wastewater treatment process. DOI: 10.5353/th_b5153745 Subjects: Sewage - Purification
Book Synopsis Complementary Role of Iron (III), Sulfate and Calcium in Precipitation of Phosphate from Solution by : Pa Ho Hsu
Download or read book Complementary Role of Iron (III), Sulfate and Calcium in Precipitation of Phosphate from Solution written by Pa Ho Hsu and published by . This book was released on 1973 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ferric Phosphate by : Donald Walter Rhodes
Download or read book Ferric Phosphate written by Donald Walter Rhodes and published by . This book was released on 1950 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chemistry for Green Environment by : M. M. Srivastava
Download or read book Chemistry for Green Environment written by M. M. Srivastava and published by Alpha Science Int'l Ltd.. This book was released on 2005 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing an overview of the current status of chemistry; regarding the implementation of clean, eco-friendly, less improvident manufacturing processes. This book acknowledges a more eco-conscious face of multi-dimensional chemistry: the need, principle, evolution, strategies and bioethical concerns for sustainable development of environment.
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