SELECTIVE CULTIVATION OF TWO STRAINS OF ACIDITHIOBACILLUS THIOOXIDANS AND BIO-OXIDATION OF ELEMENTAL SULFUR

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	SELECTIVE CULTIVATION OF TWO STRAINS OF ACIDITHIOBACILLUS THIOOXIDANS AND BIO-OXIDATION OF ELEMENTAL SULFUR
	Yang, Qiyong 2,3,4; Yang, Wenfeng 1,4; Zhu, Qiong 4; Zhang, Qingfang 1; Tang, Mei 4
刊名	FRESENIUS ENVIRONMENTAL BULLETIN
	2018
卷号	27 期号:7 页码:4734-4742
关键词	Acidithiobacillus thiooxidans sulfur-oxidation elemental sulfur 16S rRNA isolation
ISSN号	1018-4619
英文摘要	Bioleaching with Acidithiobacillus species is an environment-friendly and economical technology to remove heavy metals from sludge. Two strains of acidophilic sulfur-oxidizing bacterium were isolated from the secondary activated sludge of sewage treatment plants. According to the colonial morphology, SEM image of strains, physiological-biochemical properties and 16S rRNA gene sequence analysis, the two strains were identified as Acidithiobacillus thiooxidans JJU-1 and JJU-4. The gene sequence of JJU-1 was deposited into the GenBank database under the following Accession No. KM101109. The microfiltration membrane experiment confirmed that Acidithiobacillus thiooxidans must be in direct physical contact with the sulfur particle before sulfur-oxidation could take place. The experiment results indicated that the two strains were efficient in acid production. Especially, the strain JJU-1 was superior to JJU-4 in sulfur-oxidation and JJU-1 can grow at extreme acid environments (at a pH of 0.7 or below). The pH of strain JJU-1 declined from 3.03 to 1.2 on the 8th day at optimum conditions (pH=2.5-3.5, T= 28-30 degrees C, sulfur size < 75 mu m), and dropped from 3.1 to 0.8 in the presence of surfactant agent Tween-60 of 0.80g.L-1. Therefore, Acidithiobacillus thiooxidans JJU-1 could be widely used in sewage sludge bioleaching for removal of heavy metals.
资助项目	Science and Technology Program of Education Department of Jiangxi Province, China[GJJ14732]
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	PARLAR SCIENTIFIC PUBLICATIONS (P S P)
WOS记录号	WOS:000439087100018
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32898]
专题	石油化工学院
通讯作者	Yang, Qiyong
作者单位	1.Lanzhou Univ Technol, Coll Petrochem Engn, Lanzhou 730050, Gansu, Peoples R China 2.Jiujiang Univ, Poyang Lake Ecoecon Res Ctr, Jiujiang 332005, Jiangxi, Peoples R China 3.Jiujiang Univ, Jiujiang Key Lab Basin Management & Ecol Protect, Jiujiang 332005, Jiangxi, Peoples R China 4.Jiujiang Univ, Coll Chem & Environm Engn, Jiujiang 332005, Jiangxi, Peoples R China
推荐引用方式 GB/T 7714	Yang, Qiyong,Yang, Wenfeng,Zhu, Qiong,et al. SELECTIVE CULTIVATION OF TWO STRAINS OF ACIDITHIOBACILLUS THIOOXIDANS AND BIO-OXIDATION OF ELEMENTAL SULFUR[J]. FRESENIUS ENVIRONMENTAL BULLETIN,2018,27(7):4734-4742.
APA	Yang, Qiyong,Yang, Wenfeng,Zhu, Qiong,Zhang, Qingfang,&Tang, Mei.(2018).SELECTIVE CULTIVATION OF TWO STRAINS OF ACIDITHIOBACILLUS THIOOXIDANS AND BIO-OXIDATION OF ELEMENTAL SULFUR.FRESENIUS ENVIRONMENTAL BULLETIN,27(7),4734-4742.
MLA	Yang, Qiyong,et al."SELECTIVE CULTIVATION OF TWO STRAINS OF ACIDITHIOBACILLUS THIOOXIDANS AND BIO-OXIDATION OF ELEMENTAL SULFUR".FRESENIUS ENVIRONMENTAL BULLETIN 27.7(2018):4734-4742.