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首页> 外文期刊>Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies >An integrated approach to remove Cr(VI) using immobilized Chlorella minutissima grown in nutrient rich sewage wastewater
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An integrated approach to remove Cr(VI) using immobilized Chlorella minutissima grown in nutrient rich sewage wastewater

机译:一种使用富营养污水中生长的固定小球藻去除六价铬的综合方法

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摘要

The potential of an integrated system for sewage wastewater treatment and biosorption of chromium(VI) was evaluated using immobilized Chlorella minutissima cells. Immobilized algal cells were grown in sewage wastewater in designed photobioreactor for 48. h and then subjected to removal of Cr(VI) from synthetic wastewater. The effect of pH, Cr(VI) concentration, biosorbent dose on Cr(VI) removal was investigated. C. minutissima showed a higher NH4+-N and PO43--P removal efficiency (above 99% removal) than the NO32--N (58% removal) in 48. h. Biosorption of Cr(VI) was found to be highly dependent on solution pH, biosorbent dose and initial Cr(VI) concentration. Maximum Cr(VI) uptake 57.33. mg. Cr(VI)/g dry biosorbent/L of solution was observed at pH. 2 with 20% (w/v) biosorbent. Further more than 90% of total Cr adsorbed could be recovered using 0.5. M NaOH as desorption medium.
机译:使用固定的小球藻小球藻评估了污水处理和铬(VI)生物吸附的集成系统的潜力。固定的藻类细胞在设计的光生物反应器的污水中生长48小时,然后从合成废水中去除六价铬。研究了pH,Cr(VI)浓度,生物吸附剂量对Cr(VI)去除的影响。 C. minutissima在48小时内显示出比NO32-N(去除58%)更高的NH4 + -N和PO43-P去除效率(超过99%去除)。发现Cr(VI)的生物吸附高度依赖于溶液的pH,生物吸附剂量和初始Cr(VI)浓度。最大Cr(VI)吸收57.33。毫克在pH下观察到Cr(VI)/ g干生物吸附剂/ L溶液。 2具有20%(w / v)的生物吸附剂。使用0.5可以回收90%以上的总Cr吸附量。 M NaOH作为解吸介质。

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