Recent advancements in the mitigation of obnoxious nitrogenous gases

Nitrogenous gaseous emissions commonly have an obnoxious odor associated with it, which when discharged into the environment results in serious environmental problems and health hazards. Several strategies for mitigation of nitrogenous odorants have been reported which include physical, chemical and...

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Bibliographic Details
Published in:	Journal of environmental management 2018-01, Vol.205, p.319-336
Main Authors:	Raj, Ishan, Vaidya, A.N., Pandey, R.A., Bansiwal, Amit, Deshmukh, Sharvari, Purohit, Hemant J.
Format:	Article
Language:	eng
Subjects:	Biodegradation, Environmental Biofilter Bioreactors Biotrickling filter Filtration Gases Membrane bioreactor Nitrogen Odorants Reactor modelling VOC
Online Access:	Get full text
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Summary:	Nitrogenous gaseous emissions commonly have an obnoxious odor associated with it, which when discharged into the environment results in serious environmental problems and health hazards. Several strategies for mitigation of nitrogenous odorants have been reported which include physical, chemical and biological methods. Biological treatments are widely employed because of their efficiency even at low concentration, where physical and chemical methods are not effective. Most commonly used biological treatment methods are biofiltration, biotrickling filters and membrane bioreactors with innovative reactor design, mixing pattern, and air sparging, for example FEBR, ALR, etc. These treatment methods require a critical assessment for the mitigation of obnoxious nitrogen emissions, especially in the context of environmental protection. This review offers a critical evaluation of treatment methods for the mitigation of nitrogenous odorous compound with a key emphasis on biological treatment systems. Also, various mathematical modelling techniques required for optimized operation of biotreatment systems has been discussed. [Display omitted] •Review of the nitrogenous compound from anthropogenic and natural sources.•Impact of N odorants on environment and health with reference to stringent norms.•Comparative analysis of different treatment technologies for nitrogenous odorants.•Emphasis on biotreatment systems with its bottlenecks and remedies.•Mathematical modelling and future needs.
ISSN:	0301-4797 1095-8630