Performances of two biotrickling filters in treating H₂S-containing waste gases and analysis of corresponding bacterial communities by pyrosequencing.
Two identical biotrickling filters named BTFa and BTFb were run in parallel to examine their performances in removing hydrogen sulfide. BTFa was filled with ceramic granules, and BTFb was filled with volcanic rocks. The results showed that BTFb was more robust than BTFa under acidic conditions. At empty bed residence times (EBRTs) of 20 and 15 s, the removal efficiency of BTFa was close to 100%. At EBRTs of 10 and 5 s, the removal efficiency of BTFa slightly decreased. The removal efficiencies of BTFa decreased by different degrees at the end of each stage, dropping to 94%, 81%, 60%, and 71%, respectively. However, the H(2)S removal efficiency in BTFb consistently reached 99% throughout the experiment. Pyrosequencing analyses indicated that members of Thiomonas dominated in both BTFs, but the relative abundance of Acidithiobacillus was higher in BTFb than in BTFa.
School of Bioscience and Bioengineering, South China University of Technology, Panyu District, 382 Outer Ring East Road, Guangzhou 510006, China.
Jianjun
J
Li
Guangyun
G
Ye
Duanfang
D
Sun
Guoping
G
Sun
Xiaowei
X
Zeng
Jian
J
Xu
Shizhong
S
Liang
D001419:Bacteria / Q000145:classification / Q000235:genetics / Q000302:isolation & purification* / Q000378:metabolism*; D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology; D052918:Environmental Restoration and Remediation / Q000295:instrumentation / Q000379:methods*; D005740:Gases / Q000378:metabolism*; D059014:High-Throughput Nucleotide Sequencing; D006862:Hydrogen Sulfide / Q000378:metabolism*
D005740:Gases; D006862:Hydrogen Sulfide