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首页> 外文期刊>Engenharia Sanitaria e Ambiental >Biosorption of Cr(III) ions from synthetic aqueous solutions and tannery effluent using the macrophyte Pistia stratiotes
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Biosorption of Cr(III) ions from synthetic aqueous solutions and tannery effluent using the macrophyte Pistia stratiotes

机译:利用大型植物Pistia层对合成水溶液和制革废水中Cr(III)离子的生物吸附

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Chromium is a toxic metal widely used in industrial processes, so the concern with the liquid effluents generated is constant, that once released without proper treatment can compromise the quality of the receiver body. The study aimed at analyzing the process of biosorption in removing Cr(III) ions of synthetic aqueous solutions and tannery effluent using as biosorbent the Pistia stratiotes macrophyte in natura (PN) and chemically modified (PM) with sodium hydroxide and citric acid. The preparation, characterization of the biosorbents and the experiments of biosorption were performed. Equilibrium studies indicated that the maximum biosorption capacity for PM was 58.16 mg g -1 and 19.80 mg g -1 for PN. In the tests using raw effluent from tannery, chromium removal was 28.26% for both biosorbents, and in the effluent from biological treatment lagoon, the higher rate of metal removal was obtained by biosorbent PM with 65.44%. The results showed that the use of P. stratiotes as biosorbent may be an effective and low-cost alternative and that additional studies are needed to assess its full-scale application.
机译:铬是在工业过程中广泛使用的有毒金属,因此对所产生的液体流出物的担忧一直存在,一旦不经过适当处理就释放会损害接收器的质量。这项研究旨在分析使用自然界中的Pistia层大植物(PN)和经过氢氧化钠和柠檬酸化学修饰(PM)的生物吸附剂去除合成水溶液和制革废水中的Cr(III)离子的生物吸附过程。进行了生物吸附剂的制备,表征和生物吸附实验。平衡研究表明,PM的最大生物吸附量为58.16 mg g -1和PN的19.80 mg g -1。在使用制革厂原废水的测试中,两种生物吸附剂的铬去除率均为28.26%,而在生物处理泻湖的废水中,通过生物吸附剂PM可获得的金属去除率更高,为65.44%。结果表明,体育纹枯草杆菌作为生物吸附剂的使用可能是一种有效且低成本的替代方法,还需要进一步的研究来评估其全面应用。

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