高度耐铝的异化硫酸盐还原菌群落对铝和硫酸盐的去除。
Aluminum and sulphate removal by a highly Al-resistant dissimilatory sulphate-reducing bacteria community.
机构信息
Departamento de Química e Farmácia, Faculdade de Ciências e de Tecnologia, Centro de Ciências do Mar-CCMAR, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal.
出版信息
Biodegradation. 2012 Sep;23(5):693-703. doi: 10.1007/s10532-012-9545-x. Epub 2012 Feb 25.
A highly Al-resistant dissimilatory sulphate-reducing bacteria community was isolated from sludge of the wetland of Urgeiriça mine (community W). This community showed excellent sulphate removal at the presence of Al³⁺. After 27 days of incubation, 73, 86 and 81% of sulphate was removed in the presence of 0.48, 0.90 and 1.30 mM of Al³⁺, respectively. Moreover, Al³⁺ was simultaneously removed: 55, 85 and 78% of metal was removed in the presence of 0.48, 0.90 and 1.30 mM of Al³⁺, respectively. The dissociation of aluminium-lactate soluble complexes due to lactate consumption by dissimilatory sulphate-reducing bacteria can be responsible for aluminum removal, which probably precipitates as insoluble aluminium hydroxide. Phylogenetic analysis of 16S rRNA gene showed that this community was mainly composed by bacteria closely related to Desulfovibrio desulfuricans. However, bacteria affiliated to Proteus and Ralstonia were also present in the community.
从乌尔基里察矿区湿地的污泥中分离出了一种对铝具有高度抗性的异化硫酸盐还原菌群落（群落 W）。该群落显示出在 Al³⁺存在下出色的硫酸盐去除能力。在 0.48、0.90 和 1.30 mM 的 Al³⁺存在下分别培养 27 天后，分别去除了 73%、86%和 81%的硫酸盐。此外，还同时去除了 Al³⁺：在 0.48、0.90 和 1.30 mM 的 Al³⁺存在下分别去除了 55%、85%和 78%的金属。由于异化硫酸盐还原菌消耗乳酸盐，导致铝-乳酸盐可溶性络合物解离，可能是铝去除的原因，其可能沉淀为不溶性氢氧化铝。16S rRNA 基因的系统发育分析表明，该群落主要由与脱硫弧菌密切相关的细菌组成。然而，该群落中也存在变形菌属和罗尔斯顿菌属的细菌。
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