摘要
采用向硫化矿培养基中补加FeSO_4的方式以维持Fe^(2+)浓度为4～8g/L,可使嗜酸氧化亚铁硫杆菌菌浓在培养39h时达到6.25×10~8 cells/mL,并在比生长速率几乎不降低的前提下提高了转化率和生产强度。然后对低氧化还原电位下低品位黄铜矿的浸出进行初步研究,结果表明经过30d浸出,铜的浸出率可达28.5%,且此浸出过程中菌的能源物质是Fe^(2+)而不是硫化矿物。
By feeding of ferrous sulfate into sulfide minerals medium to maintain the Fe2 ＋ within the concentration range from 4 g/L to 8 g/L, the biomass of Acidithiobacillus ferroazidans could reach 6.25 ×10^8 cells/mL within 39 hours. At the same time the conversion rate and production intensity was improved without reducing the special growth rate. The preliminary study on low-grade chalcopyrite bioleaching at low redox potentials was carried out. The results showed that the leaching rate of copper could reach 28.5 percent within 30 days, and the Fe2＋ , rather than sulfide minerals, was utilized as the bacteria growth energy in that leaching period.
出处
《工业微生物》
CAS
CSCD
2011年第4期50-56,共7页
Industrial Microbiology
基金
江南大学青年基金(2008LQN017)
深圳市土木工程耐久性重点实验室开放课题(CED08-09)
