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新型绿色吸附剂作为水环境中铬（VI）修复可持续替代方案的综述。

A review of novel green adsorbents as a sustainable alternative for the remediation of chromium (VI) from water environments.

作者信息

Anjum Amna, Mazari Shaukat Ali, Hashmi Zubair, Jatoi Abdul Sattar, Abro Rashid, Bhutto Abdul Waheed, Mubarak Nabisab Mujawar, Dehghani Mohammad Hadi, Karri Rama Rao, Mahvi Amir Hossein, Nasseri Simin

机构信息

Department of Chemical Engineering, Dawood University of Engineering and Technology, Karachi, 74800, Pakistan.

Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan, BE1410, Brunei Darussalam.

出版信息

Heliyon. 2023 Apr 21;9(5):e15575. doi: 10.1016/j.heliyon.2023.e15575. eCollection 2023 May.

DOI:10.1016/j.heliyon.2023.e15575
PMID:37153391
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10160521/
Abstract

The presence of heavy metal, chromium (VI), in water environments leads to various diseases in humans, such as cancer, lung tumors, and allergies. This review comparatively examines the use of several adsorbents, such as biosorbents, activated carbon, nanocomposites, and polyaniline (PANI), in terms of the operational parameters (initial chromium (VI) concentration (C), temperature (T), pH, contact time (t), and adsorbent dosage) to achieve the Langmuir's maximum adsorption capacity (q) for chromium (VI) adsorption. The study finds that the use of biosorbents (fruit bio-composite, fungus, leave, and oak bark char), activated carbons (HCl-treated dry fruit waste, polyethyleneimine (PEI) and potassium hydroxide (KOH) PEI-KOH alkali-treated rice waste-derived biochar, and KOH/hydrochloric acid (HCl) acid/base-treated commercial), iron-based nanocomposites, magnetic manganese-multiwalled carbon nanotubes nanocomposites, copper-based nanocomposites, graphene oxide functionalized amino acid, and PANI functionalized transition metal are effective in achieving high Langmuir's maximum adsorption capacity (q) for chromium (VI) adsorption, and that operational parameters such as initial concentration, temperature, pH, contact time, and adsorbent dosage significantly affect the Langmuir's maximum adsorption capacity (q). Magnetic graphene oxide functionalized amino acid showed the highest experimental and pseudo-second-order kinetic model equilibrium adsorption capacities. The iron oxide functionalized calcium carbonate (IO@CaCO) nanocomposites showed the highest heterogeneous adsorption capacity. Additionally, Syzygium cumini bark biosorbent is highly effective in treating tannery industrial wastewater with high levels of chromium (VI).

摘要

水环境中重金属六价铬的存在会导致人类患上各种疾病，如癌症、肺部肿瘤和过敏。本综述比较研究了几种吸附剂，如生物吸附剂、活性炭、纳米复合材料和聚苯胺（PANI），在操作参数（初始六价铬浓度（C）、温度（T）、pH值、接触时间（t）和吸附剂用量）方面对六价铬吸附实现朗缪尔最大吸附容量（q）的情况。研究发现，使用生物吸附剂（水果生物复合材料、真菌、树叶和橡木树皮炭）、活性炭（盐酸处理的干果废料、聚乙烯亚胺（PEI）和氢氧化钾（KOH）处理的PEI - KOH碱处理水稻废料衍生生物炭以及KOH/盐酸（HCl）酸碱处理的商用活性炭）、铁基纳米复合材料、磁性锰 - 多壁碳纳米管纳米复合材料、铜基纳米复合材料、氧化石墨烯功能化氨基酸和PANI功能化过渡金属，对于六价铬吸附实现高朗缪尔最大吸附容量（q）是有效的，并且初始浓度、温度、pH值、接触时间和吸附剂用量等操作参数会显著影响朗缪尔最大吸附容量（q）。磁性氧化石墨烯功能化氨基酸显示出最高的实验和准二级动力学模型平衡吸附容量。氧化铁功能化碳酸钙（IO@CaCO）纳米复合材料显示出最高的非均相吸附容量。此外，蒲桃树皮生物吸附剂在处理含高浓度六价铬的制革工业废水方面非常有效。

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