首页> 外文会议>The Minerals, Metals Materials Society Annual Meeting Exhibition >DETOXIFICATION OF CHROMITE ORE PROCESSING RESIDUE WITH NOVEL CHROMATE REDUCING BACTERIA LEUCOBACTER SP. CH1
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DETOXIFICATION OF CHROMITE ORE PROCESSING RESIDUE WITH NOVEL CHROMATE REDUCING BACTERIA LEUCOBACTER SP. CH1

机译:具有新型铬酸盐还原细菌白杆菌Sp的铬铁矿矿石加工残留物的解毒。 CH1.

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Chromite ore processing residue (COPR) is a hazardous waste containing high concentration of chromium. We describe here a pioneer trial of detoxification of COPR in column reactor with an indigenous chromate reducing bacterium Leucobacter sp. Chl, which showed high chromate reducing ability at high pH. Under the optimum conditions, at 30°C and pH 10.0, pH of leachate decreased from 10.3 to 8.3, and Cr(VI) concentration in solution decreased to zero mg L{sup}(-1), and 76.4% of Cr(VI) was removed from COPR samples. The leaching toxicity of detoxified residue was 1.1 mg L{sup}(-1) that was lower than national standard of China.
机译:铬铁矿矿石加工残留物(COPR)是含有高浓度铬的危险废物。我们在此描述了对柱反应器中的COPR解毒的先驱试验,其具有天然铬酸盐还原细菌白杆菌SP。 CHL,其在高pH下显示出高铬酸盐降低能力。在最佳条件下,在30℃和pH 10.0下,渗滤液的pH从10.3至8.3降低,溶液中的Cr(VI)浓度降低至零Mg1}(-1),76.4%的Cr(VI) )从COPR样品中除去。解毒残留物的浸出毒性为1.1 mg l {sup}( - 1),低于中国国家标准。

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