典型文献
Effects of forced aeration on community dynamics of free and attached bacteria in copper sulphide ore bioleaching
文献摘要：
Bacterial community dynamics and copper leaching with applied forced aeration were investigated during low-grade copper sulph-ide bioleaching to obtain better bioleaching efficiency. Results illustrated that appropriate aeration improved bacterial concentrations and leach-ing efficiencies. The highest bacterial concentration and Cu2+ concentration after 14-d leaching were 7.61 × 107 cells·mL?1 and 704.9 mg·L?1, respectively, at aeration duration of 4 h·d?1. The attached bacteria played a significant role during bioleaching from 1 to 7 d. However, free bac-teria dominated the bioleaching processes from 8 to 14 d. This phenomenon was mainly caused by the formation of passivation layer through Fe3+ hydrolysis along with bioleaching, which inhibited the contact between the attached bacteria and ore. Meanwhile, 16S rDNA analysis verified the effect of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans on the bioleaching process. The results demonstrate the importance of free and attached bacteria in bioleaching.
文献关键词：
中图分类号：
作者姓名：
Wei Chen;Shenghua Yin;I.M.S.K.Ilankoon
作者机构：
Key Laboratory of Ministry of Education for High-Efficient Mining and Safety of Metal,University of Science and Technology Beijing,Beijing 100083,China;School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Discipline of Chemical Engineering,School of Engineering,Monash University,Jalan Lagoon Selatan,Bandar Sunway,Selangor Darul Ehsan 47500,Malaysia
文献出处：
引用格式：
[1]Wei Chen;Shenghua Yin;I.M.S.K.Ilankoon-.Effects of forced aeration on community dynamics of free and attached bacteria in copper sulphide ore bioleaching)[J].矿物冶金与材料学报,2022(01):59-69
A类：
sulph
B类：
Effects,forced,aeration,community,dynamics,free,attached,copper,sulphide,ore,bioleaching,Bacterial,applied,were,investigated,during,low,grade,obtain,better,efficiency,Results,illustrated,that,appropriate,improved,bacterial,concentrations,efficiencies,highest,Cu2+,after,cells,respectively,duration,played,significant,role,from,However,dominated,processes,This,phenomenon,was,mainly,caused,by,formation,passivation,layer,through,Fe3+,hydrolysis,along,which,inhibited,contact,between,Meanwhile,16S,rDNA,analysis,verified,effect,Acidithiobacillus,ferrooxidans,thiooxidans,results,demonstrate,importance
AB值：
0.500536
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