评估藻类生物质对制革废水六价铬去除的作用：一种可持续方法。
Assessment of algal biomass towards removal of Cr(VI) from tannery effluent: a sustainable approach.
机构信息
Department of Chemical Engineering, Vignan's Foundation for Science, Technology & Research, Vadlamudi, Guntur, Andhra Pradesh, 522213, India.
Department of Chemical Engineering, National Institute of Technology Durgapur, Durgapur, 713209, India.
出版信息
Environ Sci Pollut Res Int. 2022 Sep;29(41):61856-61869. doi: 10.1007/s11356-021-16102-8. Epub 2021 Aug 25.
The current investigation focuses on a systematic study of application of two dried algal biomass (i.e., Nostoc sp. and Turbinaria vulgaris) in removal of Cr(VI) from synthetic solution as well as tannery industrial wastewater. The optimized conditions for Cr(VI) removal are nearly same for the both the biosorbents (i.e., pH 2.8, initial Cr(VI) concentration 100 mg L, biomass dosage of 1.2g L, contact time 120 and 110 min). Nostoc sp. (q=23.94mg g) was observed to possess a superior removal capability when compared to Turbinaria vulgaris (q=21.8mg g). Desorption studies were performed with four different desorbing agents. Application study was conducted using tannery wastewater with Nostoc sp. and 94.20% removal of Cr(VI) was obtained. Hence, this study revealed that Nostoc sp. and T. vulgaris both have great potential to be an environment friendly and economic biosorbent for removal of Cr(VI) containing industrial effluent.
本研究主要针对两种干燥海藻生物质（即念珠藻和普通马尾藻）在去除合成溶液和制革工业废水中 Cr(VI)方面的应用进行了系统研究。两种生物吸附剂（即 pH 值 2.8、初始 Cr(VI)浓度 100mg/L、生物吸附剂用量 1.2g/L、接触时间 120min 和 110min）的最佳 Cr(VI)去除条件几乎相同。与普通马尾藻（q=21.8mg/g）相比，念珠藻（q=23.94mg/g）具有更高的去除能力。采用四种不同的解吸剂进行了解吸研究。应用研究使用制革废水进行，采用念珠藻处理后，Cr(VI)的去除率达到 94.20%。因此，本研究表明，念珠藻和普通马尾藻均具有作为去除含 Cr(VI)工业废水的环保、经济生物吸附剂的巨大潜力。
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