title: Current advances of integrated processes combining chemical absorption and biological reduction for NO x removal from flue gas.
abstract: Anthropogenic nitrogen oxides (NO x ) emitted from the fossil-fuel-fired power plants cause adverse environmental issues such as acid rain, urban ozone smoke, and photochemical smog. A novel chemical absorption-biological reduction (CABR) integrated process under development is regarded as a promising alternative to the conventional selective catalytic reduction processes for NO x removal from the flue gas because it is economic and environmentally friendly. CABR process employs ferrous ethylenediaminetetraacetate [Fe(II)EDTA] as a solvent to absorb the NO x following microbial denitrification of NO x to harmless nitrogen gas. Meanwhile, the absorbent Fe(II)EDTA is biologically regenerated to sustain the adequate NO x removal. Compared with conventional denitrification process, CABR not only enhances the mass transfer of NO from gas to liquid phase but also minimize the impact of oxygen on the microorganisms. This review provides the current advances of the development of the CABR process for NO x removal from the flue gas.
authors.affiliation: Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, Department of Chemical and Biological Engineering, Zhejiang University, Yuquan Campus, Hangzhou, 310027, China, skyzhang@zju.edu.cn.
authors.forename: Shihan
authors.initials: S
authors.lastname: Zhang
authors.forename: Han
authors.initials: H
authors.lastname: Chen
authors.forename: Yinfeng
authors.initials: Y
authors.lastname: Xia
authors.forename: Nan
authors.initials: N
authors.lastname: Liu
authors.forename: Bi-Hong
authors.initials: BH
authors.lastname: Lu
authors.forename: Wei
authors.initials: W
authors.lastname: Li
mesh_terms: D000327:Adsorption; D000393:Air Pollutants / Q000737:chemistry* / Q000378:metabolism*; D004492:Edetic Acid / Q000737:chemistry; D005296:Ferrous Compounds / Q000737:chemistry; D005740:Gases / Q000737:chemistry*; D007220:Industrial Waste; D009569:Nitric Oxide / Q000737:chemistry* / Q000378:metabolism*; D009584:Nitrogen / Q000378:metabolism; D010084:Oxidation-Reduction
chemical_list: D000393:Air Pollutants; D005296:Ferrous Compounds; D005740:Gases; D007220:Industrial Waste; D009569:Nitric Oxide; D004492:Edetic Acid; D009584:Nitrogen