Simultaneous removal of nitric oxide and sulfur dioxide in a biofilter under micro-oxygen thermophilic conditions: Removal performance, competitive relationship and bacterial community structure

被引：21

作者：

Sun, Congcong ^{[1
,2
]}

Yuan, Jianqi ^{[1
,2
]}

Xu, Hao ^{[1
,2
]}

Huang, Shaobin ^{[1
,2
]}

Wen, Xiangyu ^{[1
,2
]}

Tong, Na ^{[1
,2
]}

Zhang, Yongqing ^{[1
,2
]}

机构：

[1] South China Univ Technol, Higher Educ Mega Ctr, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China

[2] Guangdong Prov Key Lab Atmospher Environm & Pollu, Guangzhou 510006, Guangdong, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2019年 / 290卷

基金：

中国国家自然科学基金;

关键词：

Biofilter; Nitric oxide; Sulfur dioxide; Competitive relationship; Microbial community; ELEMENTAL SULFUR; NITROGEN REMOVAL; NITRATE REMOVAL; FLUE-GAS; SIMULTANEOUS DESULFURIZATION; DEGRADATION EFFICIENCY; SULFIDE-OXIDATION; SULFATE-REDUCTION; DISSOLVED-OXYGEN; CARBON SOURCE;

D O I：

10.1016/j.biortech.2019.121768

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The efficiency of a biofilter to simultaneously remove nitric oxide (NO) and sulfur dioxide (SO2) was investigated under thermophilic (48 +/- 2 degrees C) micro-oxygen (3 vol%) conditions. After the start-up stage (Days 0-14), the stable operation period was divided into three stages. SO2 inlet concentration remained 500 mg/m(3) , NO inlet concentrations were 300 mg/m(3) (Days 15-40), 500 mg/m(3) (Days 41-70) and 700 mg/m(3) (Days 71-100). In each stable stage, the removal efficiency of NO and SO2 exceeded 90%, the maximum removal rates of NO and SO2 were 98.08% and 99.61%, respectively. The final products of SO2 were mostly sulphur. Nitrate-reducing bacteria inhibited sulphate-reducing bacteria. Illumina high-throughput sequencing confirmed that the relative abundance of nitrate-reducing bacteria was positively correlated with NO removal efficiency, the relative abundance of sulphate-reducing bacteria was related to the conversion rate of sulphur.

引用

页数：8

共 45 条

[1] Optimization of a baffled-reactor microbial fuel cell using autotrophic denitrifying bio-cathode for removing nitrogen and recovering electrical energy [J].