Simultaneous removal of SO2 and NO in a rotating drum biofilter coupled with complexing absorption by FeII(EDTA)

Abstract A promising process of microbial desulfurization and denitrification integrated with complexing absorption is under the development for simultaneous removal of SO2 and NO in a rotating drum biofilter (RDB). The process employs FeII(EDTA) to improve the NO mass transfer, the denitrifiers bacteria (NR) for the denitrification, and the sulfate reducing bacteria (SRB) for the desulfurization. Experimental results demonstrated that NO removal efficiency was significantly improved from 57.1% to 93.0% in the presence of 10 mM FeII(EDTA) in the 60-day operation. Meanwhile, the SO2 removal efficiency reached around 90%. Parametric tests showed the maximal removal efficiency of SO2 and NO could be achieved at 98.5% and 93%, respectively, in the conditions of 2000 mg/m3 SO2, 800 mg/m3 NO, 1.8 min of empty bed residence time (EBRT), and 2 vol% oxygen. The microbial community analysis with the high-throughput sequencing indicated that the dominant denitrification bacteria with a maximal abundance of 35.7% were Pseudomonas which was mainly distributed in the external sphere of RDB and the dominant SRB was Desulfovibrio, which was mainly distributed in nutrient solution with a maximal abundance of 6.1%.

[1]  Weijiang Zhang,et al.  A PERFORMANCE STUDY OF SIMULTANEOUS MICROBIAL REMOVAL OF NO AND SO2 IN A BIO TRICKLING-FILTER UNDER ANAEROBIC CONDITION , 2011 .

[2]  Jianmeng Chen,et al.  Nitric oxide enhanced reduction in a rotating drum biofilter coupled with absorption by FeII(EDTA) , 2013 .

[3]  K. Sublette,et al.  Simultaneous combined microbial removal of sulfur dioxide and nitric oxide from a gas stream , 1991, Applied biochemistry and biotechnology.

[4]  Zhancheng Guo,et al.  Catalytic oxidation of NO to NO2 on activated carbon , 2001 .

[5]  Paul T. Williams,et al.  Simultaneous reduction of NOx and SO2 emissions from coal combustion by calcium magnesium acetate , 2004 .

[6]  Pedroso,et al.  Nitric oxide induces cell death in Taxus cells. , 2000, Plant science : an international journal of experimental plant biology.

[7]  Aijie Wang,et al.  Microbial community functional structure in response to micro-aerobic conditions in sulfate-reducing sulfur-producing bioreactor. , 2014, Journal of environmental sciences.

[8]  Jerry Kaczur.  Oxidation chemistry of chloric acid in NOx/SOx and air toxic metal removal from gas streams , 1996 .

[9]  Z. Liu,et al.  Catalytic removal of SO2 over ammonia-activated carbon fibers , 2001 .

[10]  Kinga Skalska,et al.  Trends in NO(x) abatement: a review. , 2010, The Science of the total environment.

[11]  C. Kennes,et al.  Bioprocesses for the removal of nitrogen oxides from polluted air , 2005 .

[12]  Bram Klapwijk,et al.  NO removal in continuous BioDeNOx reactors: Fe(II)EDTA2− regeneration, biomass growth, and EDTA degradation , 2006, Biotechnology and bioengineering.

[13]  Q. Mahmood,et al.  Simultaneous sulfide and nitrate removal in anaerobic reactor under shock loading. , 2009, Bioresource Technology.

[14]  P. Zheng,et al.  Anoxic sulfide biooxidation using nitrite as electron acceptor. , 2010, Journal of hazardous materials.

[15]  P. Zheng,et al.  Effect of pH on anoxic sulfide oxidizing reactor performance. , 2008, Bioresource technology.

[16]  P. Moore,et al.  Inhibition of nitric oxide synthase--potential for a novel class of therapeutic agent? , 1995, Trends in biotechnology.

[17]  Zbigniew Zimek,et al.  Electron beam flue gas treatment (EBFGT) technology for simultaneous removal of SO2 and NOx from combustion of liquid fuels , 2008 .

[18]  Ji-ti Zhou,et al.  Fe(II)EDTA-NO reduction coupled with Fe(II)EDTA oxidation by a nitrate- and Fe(III)-reducing bacterium. , 2013, Bioresource technology.

[19]  W. Li,et al.  Current advances of integrated processes combining chemical absorption and biological reduction for NOx removal from flue gas , 2014, Applied Microbiology and Biotechnology.

[20]  P. Lens,et al.  Effect of sulfur compounds on biological reduction of nitric oxide in aqueous Fe(II)EDTA2- solutions. , 2006, Nitric oxide : biology and chemistry.

[21]  Ji-ti Zhou,et al.  Fe(III)EDTA and Fe(II)EDTA-NO reduction by a sulfate reducing bacterium in NO and SO2 scrubbing liquor , 2015, World journal of microbiology & biotechnology.

[22]  N. Ren,et al.  An Innovative Process of Simultaneous Desulfurization and Denitrification by Thiobacillus denitrificans , 2005, Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering.

[23]  Xiaojun Wang,et al.  Fe(II)EDTA–NO Reduction by Sulfide in the Anaerobic Aqueous Phase: Stoichiometry and Kinetics , 2013 .

[24]  W. Li,et al.  Kinetics for the simultaneous absorption of nitric oxide and sulfur dioxide with the hexamminecobalt solution , 2008 .

[25]  K. Sublette,et al.  Microbial reduction of sulfur dioxide and nitric oxide , 1993 .

[26]  Eustathios S. Kikkinides,et al.  Simultaneous sulfur dioxide/nitrogen oxide (NOx) removal and sulfur dioxide recovery from flue gas by pressure swing adsorption , 1991 .

[27]  W. Verstraete,et al.  Nitrate-reducing, sulfide-oxidizing bacteria as microbial oxidants for rapid biological sulfide removal. , 2009, FEMS microbiology ecology.

[28]  H. Vali,et al.  Reduction of Iron Oxides Enhanced by a Sulfate-Reducing Bacterium and Biogenic H2S , 2006 .

[29]  D. Wendehenne,et al.  Nitric oxide production in tobacco leaf cells: a generalized stress response? , 2003 .

[30]  T. Tourova,et al.  Molecular phylogeny and taxonomy of colorless, filamentous sulfur bacteria of the genus Thiothrix , 2012, Microbiology.

[31]  M. Deshusses,et al.  Sulfur dioxide treatment from flue gases using a biotrickling filter-bioreactor system. , 2003, Environmental science & technology.

[32]  J. Chen,et al.  Effects of oxygen content on the simultaneous microbial removal of SO2 and NOx in biotrickling towers , 2015, Biotechnology and Bioprocess Engineering.

[33]  Weijiang Zhang,et al.  Simultaneous removal of NO(x) and SO2 in exhausted gas through landfill leachate. , 2010, Indian journal of experimental biology.

[34]  Zhenyu Liu,et al.  Formation and reaction of ammonium sulfate salts on V2O5/AC catalyst during selective catalytic reduction of nitric oxide by ammonia at low temperatures , 2003 .

[35]  Li Wang,et al.  Simultaneous absorption of NO and SO2 by FeIIEDTA combined with Na2SO3 solution , 2007 .

[36]  J. Tiedje,et al.  Naïve Bayesian Classifier for Rapid Assignment of rRNA Sequences into the New Bacterial Taxonomy , 2007, Applied and Environmental Microbiology.

[37]  Bram Klapwijk,et al.  NOx removal from flue gas by an integrated physicochemical absorption and biological denitrification process. , 2005, Biotechnology and bioengineering.