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首页> 外文期刊>Journal of Basic and Applied Engineering Research: JBAER >Sequestration of Chromium III and VI ions from Wastewater by Spirulina sp. and Value-added Pigment Production
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Sequestration of Chromium III and VI ions from Wastewater by Spirulina sp. and Value-added Pigment Production

机译：螺旋藻从废水中螯合铬Ⅲ和Ⅵ离子。和增值颜料生产

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摘要

Rising concentrations of toxic and carcinogenic heavy metals in wastewater is detrimental to human health,agriculture and flora-fauna. Removal of such heavy metals becomes a necessity due to their potential toxicity and nonbiodegradability in the environment. Chromium IIIandVI is one such heavy metal that is frequently found in the wastewater fromthe outlet of several industries. Removal of Cr using conventional physio-chemical methods produces harmful by-products andend-products which is the major cause of secondary pollution. The potential application of microalgae as biosorbents for theremoval of Cr has been recognized as an alternative to the above-mentioned methods. In this work, microalgae Spirulina sp. wasacclimatized to gradually increasing concentration of Cr III and VI from 20-80 mg/l in Yamuna river water and Zarrouk’smedium as media for the removal of heavy metal. A maximum removal percent of 88% and 82% of Cr (III) and 74% and 83.1%of Cr (VI) in Yamuna and Zarrouk’s media was achieved, respectively. Value added pigments were also produced subsequently.The maximum concentration of Chlorophyll was observed as 3.9 mg/g (Cr VI) in Zarrouk’s medium and that of Phycocyanin wasobserved as 2.65 mg/g (Cr III) in Yamuna river water medium. Hence, Spirulina sp. proved to be an excellent scavenger of Cr(III) and Cr (VI) ions and also for the generation of value-added pigments.
机译：废水中有毒和致癌重金属的浓度上升，对人体健康，农业和动植物群都是有害的。由于其在环境中的潜在毒性和不可生物降解性，因此必须除去这类重金属。铬III和六价铬是一种这样的重金属，在多个行业的废水中经常发现。使用常规的物理化学方法去除Cr会产生有害的副产物和最终产物，这是造成二次污染的主要原因。人们已经认识到微藻作为去除铬的生物吸附剂的潜在应用是上述方法的替代方法。在这项工作中，微藻螺旋藻sp。可以使Yamuna河水和Zarrouk培养基中的Cr III和VI浓度从20-80 mg / l逐渐增加，以去除重金属。在Yamuna和Zarrouk的介质中，最大去除率分别为88％和82％的Cr（III）和74％和83.1％的Cr（VI）。随后还生产了高附加值的颜料。在Zarrouk培养基中，叶绿素的最大浓度为3.9 mg / g（Cr VI），在Yamuna河水培养基中，其藻蓝蛋白的最大浓度为2.65 mg / g（Cr III）。因此，螺旋藻sp。被证明是Cr（III）和Cr（VI）离子的极佳清除剂，并且还可以用于生产增值颜料。

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