Study of the Anaerobic Methane Oxidation Coupled to Nitrate Denitrification PDF Download
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Author: Yu Hou
Publisher:
ISBN:
Category :
Languages : en
Pages : 69
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Book Description
Methane can be a potentially inexpensive, widely available electron donor for biological denitrification of wastewater, landfill leachate or drinking water, while no studies have clearly shown nitrate reduction to nitrogen gas. Recently anaerobic methane oxidation (AMO) coupled to partial denitrification (nitrite to nitrogen gas) was found by several studies. A microbial consortium, enriched from anoxic sediments, oxidized methane to carbon dioxide coupled to denitrification in the complete absence of oxygen, though the rates and pathways of AMO coupled to denitrification are still poorly understood. In this study, direct AMO coupled to denitrificaiton of nitrate was proved to be possible and its kinetic parameters were experimentally determined.
Author: Yu Hou
Publisher:
ISBN:
Category :
Languages : en
Pages : 69
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Book Description
Methane can be a potentially inexpensive, widely available electron donor for biological denitrification of wastewater, landfill leachate or drinking water, while no studies have clearly shown nitrate reduction to nitrogen gas. Recently anaerobic methane oxidation (AMO) coupled to partial denitrification (nitrite to nitrogen gas) was found by several studies. A microbial consortium, enriched from anoxic sediments, oxidized methane to carbon dioxide coupled to denitrification in the complete absence of oxygen, though the rates and pathways of AMO coupled to denitrification are still poorly understood. In this study, direct AMO coupled to denitrificaiton of nitrate was proved to be possible and its kinetic parameters were experimentally determined.
Author: Han Golterman
Publisher: Springer Science & Business Media
ISBN: 1475799721
Category : Science
Languages : en
Pages : 295
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Book Description
This book contains the papers presented at a Nato Advanced Re search Workshop entitled "DENITRIFICATION IN THE N-CYCLE," held in Braunschweig (W-Germany) from 24 to 27 Mai 1983. All expenses were provided by the North Atlantic Treaty Organization. The scientific programme was in the first instance planned by some members of the Eco-Science Panel under the stimulating organization of Dr. Oscar Ravera and the final programme was prepared in co-operation between Ravera and myself. However, even during the meeting important con tributions were added. The meeting was hosted by the Microbiologi cal Dept. of F.A.L., which also took care of the organizatory as pects. Nitrate is constantly lost from both terrestial and aquatic ecosystems, causing rnixed feelings between ecologists and agricul turists. While bacteriologically very rnuch is known, the ecology of the processes is still poorly understood, nor can it be evaluated what it rneans as an econornic loss for farrners and world food produc tion. Therefore this NATO Advanced Workshop was established to per mit a lirnited nurnber of scientists active in this field to corne to gether for a short while to address the following objectives: 1) To exchange ideas between scientists (bacteriologists and ecologists) and agronornists. 2) To assess the state of the art. 3) To discuss the difficulties of experimentation in the field. 4) To define future research. In order to accornplish these objectives, the workshopwas organ ized in three parts with the following thernes: 1) Bacteriological aspects of dentrification
Author: Marina G. Kalyuzhnaya
Publisher: Springer
ISBN: 3319748661
Category : Science
Languages : en
Pages : 310
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Book Description
This book provides in-depth insights into the most recent developments in different areas of microbial methane and methanol utilization, including novel fundamental discoveries in genomics and physiology, innovative strategies for metabolic engineering and new synthetic approaches for generation of feedstocks, chemicals and fuels from methane, and finally economics and the implementation of industrial biocatalysis using methane consuming bacteria. Methane, as natural gas or biogas, penetrates every area of human activity, from households to large industries and is often promoted as the cleanest fuel. However, one should not forget that this bundle of energy, carbon, and hydrogen comes with an exceptionally large environmental footprint. To meet goals of long-term sustainability and human well-being, all areas of energy, chemicals, agriculture, waste-management industries must go beyond short-term economic considerations and target both large and small methane emissions. The search for new environment-friendly approaches for methane capture and valorization is an ongoing journey. While it is not yet apparent which innovation might represent the best solution, it is evident that methane biocatalysis is one of the most promising paths. Microbes are gatekeepers of fugitive methane in Nature. Methane-consuming microbes are typically small in number but exceptionally big in their impact on the natural carbon cycle. They control and often completely eliminate methane emission from a variety of biological and geothermal sources. The tremendous potential of these microbial systems, is only now being implemented in human-made systems. The book addresses professors, researchers and graduate students from both academia and industry working in microbial biotechnology, molecular biology and chemical engineering.
Author: L. G. J. M. van Dongen
Publisher: IWA Publishing
ISBN: 9781843390008
Category : Science
Languages : en
Pages : 76
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Book Description
Wastewater treatment management, alongside many other industries, is seeking to attain a higher degree of sustainability for its processes by focusing on new technologies which minimise the consumption of resources or even recover them from the wastewater. Conventional removal of ammonium requires usually large amounts of energy for aeration and organic carbon for denitrification. This report focuses on making the nitrogen-removal process more sustainable. This can be achieved by a partial oxidation of ammonium to nitrite, after which the nitrate produced can be converted into nitrogen gas with the rest of ammonium under anoxic conditions. The treatment of nitrogen-rich water can be carried out beneficially by a combination of the Sharon process with the Anammox process. In this combined process less than 50% of the aeration energy is needed, no COD is required and an insignificant amount of sludge is produced. In this Report the potential of using this technology for the treatment of water arising from sludge treatment at a municipal wastewater treatment plant (WWTP) is evaluated and the results of the operation of the system are described in detail. This reject water contains a significant fraction of the N-load towards the wastewater treatment plant. The results are used in an economic evaluation of a potential full scale installation. The Combined Sharon/Anammox Process Report will provide an invaluable source of information for all those concerned with the efficient and sustainable treatment of wastewater including plant managers, process designers, consultants and researchers.
Author: A. Janas
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Chiara Cassarini
Publisher: CRC Press
ISBN: 042982730X
Category : Science
Languages : en
Pages : 176
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This research investigated new approaches to control anaerobic methane oxidation coupled to sulfate reduction (AOM-SR) and enrich anaerobic methanotrophs (ANME) and sulfate reducing bacteria (SRB) with the purpose of designing a suitable bioreactor for AOM-SR at ambient pressure and temperature. The current knowledge about AOM and the microorganisms involved in AOM are discussed. The effect of different substrates and pressures was investigated on the ANME and SRB community adapted to the shallow marine Lake Grevelingen, the Netherlands. Further, microorganisms from the Alpha Mound (Spain) deep sediment were enriched with methane gas as substrate in biotrickling filters (BTF) at ambient conditions for 147-230 days of operation. The effect of alternative sulfur compounds (sulfate, thiosulfate and elemental sulfur) were studied and the microbial community was characterized. The highest AOM and sulfate reduction rates were obtained in the BTF fed with thiosulfate as the electron acceptor (~0.4 mmol l-1 day-1), but the highest number of ANME was visualized in the sulfate fed BTF (ANME-2 43% of the total visualized archaea). A BTF was proposed as a suitable bioreactor for the enrichment of ANME and SRB at ambient pressure and temperature which could be potentially used for future biotechnological applications.
Author: Bruce E. Rittmann
Publisher:
ISBN: 9787040586800
Category : Bioreactors
Languages : en
Pages : 0
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Author: 丁靜
Publisher:
ISBN:
Category : Anaerobiosis
Languages : en
Pages : 106
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Author: Ronald L. Crawford
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 368
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Author: Christel Kampman
Publisher:
ISBN: 9789461739407
Category :
Languages : en
Pages : 105
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Book Description
