摘要
从土壤中分离筛选出几株抗Cr(Ⅵ)的硫酸盐还原菌(SRB),能在含800 mg/L Cr(Ⅵ)的培养基中生长,其中2-S-8菌株在含75 mg/L Cr(Ⅵ)的培养基中生长36 h后,培养液中的Cr (Ⅵ)已全部消失.该菌株经初步鉴定为脱硫弧菌.试验结果表明:高毒的Cr(Ⅵ)可被SRB还原成为低毒的Cr(Ⅲ),SRB对Cr(Ⅵ)的还原与SO42-还原作用密切相关,主要是由SRB的代谢作用所产生的还原性产物(S2-)来完成.
Several Sulfate E Reducing Bacteria (SRB) strains, isolated from soil, were able to grow in the medium containing 800 mg/L chromium(Ⅵ), The Cr(Ⅵ) disappeared when the strain 2-S-8 grew in the medium containing 75 mg/L Cr(Ⅵ) for 36 h. The strain was identified as Desulfovibrio sp. The results showed that high-toxic Cr(Ⅵ) was reduced to hypo-toxic Cr(Ⅲ) by SRB, and the Cr(Ⅵ) reduction was related to the reduction of sulfate, which was mainly carried out effect by metabolin of SRB.
出处
《华东师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第1期105-110,共6页
Journal of East China Normal University(Natural Science)
基金
国家自然科学基金(50130030)上海宝钢集团公司联合资助
关键词
硫酸盐还原菌
铬(Ⅵ)还原
脱硫弧菌
生物修复
sulfate-Reducing Bacteria
chromium(Ⅵ) reduction
desul fovibrio sp.
bioremediation
