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Effective bioleaching of low-grade copper ores: Insights from microbial cross experiments.
Bioresource Technology ( IF 9.7 ) Pub Date : 2020-03-30 , DOI: 10.1016/j.biortech.2020.123273 Xingjie Wang 1 , Liyuan Ma 2 , Jiangjun Wu 3 , Yunhua Xiao 4 , Jiemeng Tao 5 , Xueduan Liu 5
Bioresource Technology ( IF 9.7 ) Pub Date : 2020-03-30 , DOI: 10.1016/j.biortech.2020.123273 Xingjie Wang 1 , Liyuan Ma 2 , Jiangjun Wu 3 , Yunhua Xiao 4 , Jiemeng Tao 5 , Xueduan Liu 5
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The interaction between microorganisms and minerals was a hot topic to reveal the transformation of key elements that affecting bioleaching efficiency. Three typical low-grade copper ores, the main copper-bearing components of which were primary sulfide, secondary sulfide and high-oxidative sulfide copper, were obtained from Dexing, Zijinshan and Luanshya copper mine, respectively. Meanwhile, six typical microorganisms were isolated from each of the three habitats, and assembled as communities based on their origins. Cross bioleaching was carried out under identical conditions. The leaching parameters showed that native strains played excellent roles in their corresponding ore bioleaching process, and community structure was greatly determined by mineral composition, indicating that domestication for longitudinal adaption was an effective way to improve microbial leaching performance. Leptospirillum ferriphilum and Acidithiobacillus ferrooxidans promoted copper release by shifting redox potential and pH of the leachate, respectively, indicating that microbial population regulation was another effective way to improve bioleaching efficiency.
中文翻译：
低品位铜矿的有效生物浸出：微生物交叉实验的见解。
微生物与矿物质之间的相互作用是揭示影响生物浸出效率的关键元素转化的一个热门话题。分别从德兴，紫金山和卢安夏铜矿获得了三种典型的低品位铜矿，其主要含铜成分为一次硫化物，二次硫化物和高氧化性硫化铜。同时，从这三个栖息地的每一个中分离出六种典型的微生物，并根据其起源将它们组装为群落。交叉生物浸出在相同条件下进行。浸出参数表明，原生菌株在其相应的矿石生物浸出过程中发挥了出色的作用，并且群落结构很大程度上取决于矿物组成，表明驯化纵向适应是提高微生物浸出性能的有效途径。亚铁钩端螺旋体和亚铁氧化酸硫杆菌通过分别改变浸出液的氧化还原电位和pH值促进铜释放，表明微生物种群调控是提高生物浸出效率的另一种有效途径。
更新日期：2020-03-30
中文翻译：
低品位铜矿的有效生物浸出：微生物交叉实验的见解。
微生物与矿物质之间的相互作用是揭示影响生物浸出效率的关键元素转化的一个热门话题。分别从德兴，紫金山和卢安夏铜矿获得了三种典型的低品位铜矿，其主要含铜成分为一次硫化物，二次硫化物和高氧化性硫化铜。同时，从这三个栖息地的每一个中分离出六种典型的微生物，并根据其起源将它们组装为群落。交叉生物浸出在相同条件下进行。浸出参数表明，原生菌株在其相应的矿石生物浸出过程中发挥了出色的作用，并且群落结构很大程度上取决于矿物组成，表明驯化纵向适应是提高微生物浸出性能的有效途径。亚铁钩端螺旋体和亚铁氧化酸硫杆菌通过分别改变浸出液的氧化还原电位和pH值促进铜释放，表明微生物种群调控是提高生物浸出效率的另一种有效途径。
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