Research progress on removing typical organic heavy metal complexes from water by adsorption

doi:10.19965/j.cnki.iwt.2023-1095

Abstract

Abstract:

The efficient removal of low concentration, recalcitrant, and highly toxic organic heavy metal complexes in industrial wastewater is a hot issue in the field of heavy metal pollution control. Adsorption method has received considerable attention in the treatment of organic heavy metal complexes pollution due to its advantages of low cost, high efficiency and easy operation. This paper elaborated on the development situation and research progress of mainstream adsorbents in recent years in the field of removing typical EDTA-complexed heavy metals in water, commented on the advantages and disadvantages of different types of adsorbents and corresponding performance optimization methods, and summarized the reaction mechanisms of relevant adsorbents. The advantages and limitations of traditional organic heavy metal complexes pollution treatment technology and current new adsorption technology were compared, which provided a beneficial reference for reasonable selection of the best type of adsorbent in complex environments. The application performance and development potential of new adsorbents in the field of actual wastewater treatment contaminated with organic heavy metal complexes were listed. The priorities of future research and development directions of new adsorbents were envisioned to provide reference for the treatment of wastewater containing organic heavy metal complexes by adsorption.

Key words: industrial wastewater, EDTA-complexed heavy metals, adsorbents, reaction mechanisms

摘要：

工业废水中低浓度、难降解、高毒性有机络合态重金属的有效去除是当前重金属污染治理领域的热点问题。吸附法因成本低、效率高、操作简便等优点在有机络合态重金属污染治理领域备受关注。首先详细阐述了近年来主流吸附剂的发展现状及其在去除水体中典型EDTA络合态重金属方面的研究进展，评述了不同类别吸附剂的优缺点及相应的性能优化方法，并归纳了相关吸附剂的反应机理。之后将传统有机络合态重金属污染治理技术与当下新型吸附技术各自的优点和局限性进行了对比，为在复杂环境中合理选择最佳类型吸附剂提供了有益参考，并列举了新型吸附剂在含有机络合态重金属污染实际废水治理领域的应用表现和发展潜力。最后展望了未来新型吸附剂的研究重点和发展方向，以期为吸附法治理含有机络合态重金属废水的研究提供参考。

关键词: 工业废水, EDTA络合态重金属, 吸附剂, 反应机理

CLC Number:

X703.1

Wei ZHANG, Xubiao LUO, Ting OUYANG, Zhengwei LIU, Ping XIONG. Research progress on removing typical organic heavy metal complexes from water by adsorption[J]. Industrial Water Treatment, 2024, 44(6): 60-68.

张伟, 罗旭彪, 欧阳婷, 柳正葳, 熊萍. 吸附法去除水中典型有机络合态重金属的研究进展[J]. 工业水处理, 2024, 44(6): 60-68.

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https://www.iwt.cn/EN/Y2024/V44/I6/60

Figures/Tables 3

References 59

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吸附材料	目标污染物	反应平衡时间/min	pH	最大吸附容量/去除率	参考文献
UIO-66（Zr）	EDTA-Cu（Ⅱ）	240	6.0	57.6 mg/g	〔32〕
NNN-SBA-15	EDTA-Cu（Ⅱ）	120	5.5	26.3 mg/g	〔33〕
PU-DTC	EDTA-Cu（Ⅱ）	30	5.0	96.2 mg/g	〔34〕
壳聚糖	EDTA-Cu（Ⅱ）	>1 440	4.0	22.4 mg/g	〔35〕
Fe₃O₄@C@DETA	EDTA-Cr（Ⅲ）	720	3.0	47.3 mg/g	〔36〕
Fe₃O₄@SiO₂/Cs-DTPA	EDTA-Cr（Ⅲ）	120	4.0	22.2 mg/g	〔37〕
Zr-Mt	EDTA-Cu（Ⅱ）	120	6.0	16.1 mg/g	〔38〕
纳米椰壳炭	EDTA-Cu（Ⅱ）	2 880	3.0	5.7 mg/g	〔39〕
TiO₂	EDTA-Cu（Ⅱ）	>480	3.0	3.2 mg/g	〔40〕
Fe₂（PO₄）₃	EDTA-Pb（Ⅱ）	180	3.0	436.7 mg/g（以Pb计）	〔41〕
Fe₃O₄@void@C@H₂O₂	EDTA-Cr（Ⅲ）	540	4.0	9.7 mg/g	〔42〕
D201-ZVI	EDTA-Cu（Ⅱ）	360	5.0	92.60%	〔43〕
WMF-Fe⁰	EDTA-Cu（Ⅱ）	30	4.0	38.2 mg/g	〔44〕
S-NZVI	EDTA-Cd（Ⅱ）	1	2.0~7.0	99.9%	〔45〕
GR_ME（SO₄ ^2-）	EDTA-Cu（Ⅱ）	60	8.0	126.4 mg/g	〔46〕
Structural Fe²⁺	EDTA-Cu（Ⅱ）	60	7.7	101.21 mg/g（以Cu²⁺计）	〔47〕
MG	EDTA-Cu（Ⅱ）	1 440	3.0	89.85 mg/g	〔48〕
水铁矿（Fh）	EDTA-Cr（Ⅲ）	60	3.0	22.93 mg/g	〔49〕
Fh-Al-6	EDTA-Cr（Ⅲ）	60	3.0	32.33 mg/g	〔50〕

吸附材料	目标污染物	反应平衡时间/min	pH	最大吸附容量/去除率	参考文献
UIO-66（Zr）	EDTA-Cu（Ⅱ）	240	6.0	57.6 mg/g	〔32〕
NNN-SBA-15	EDTA-Cu（Ⅱ）	120	5.5	26.3 mg/g	〔33〕
PU-DTC	EDTA-Cu（Ⅱ）	30	5.0	96.2 mg/g	〔34〕
壳聚糖	EDTA-Cu（Ⅱ）	>1 440	4.0	22.4 mg/g	〔35〕
Fe₃O₄@C@DETA	EDTA-Cr（Ⅲ）	720	3.0	47.3 mg/g	〔36〕
Fe₃O₄@SiO₂/Cs-DTPA	EDTA-Cr（Ⅲ）	120	4.0	22.2 mg/g	〔37〕
Zr-Mt	EDTA-Cu（Ⅱ）	120	6.0	16.1 mg/g	〔38〕
纳米椰壳炭	EDTA-Cu（Ⅱ）	2 880	3.0	5.7 mg/g	〔39〕
TiO₂	EDTA-Cu（Ⅱ）	>480	3.0	3.2 mg/g	〔40〕
Fe₂（PO₄）₃	EDTA-Pb（Ⅱ）	180	3.0	436.7 mg/g（以Pb计）	〔41〕
Fe₃O₄@void@C@H₂O₂	EDTA-Cr（Ⅲ）	540	4.0	9.7 mg/g	〔42〕
D201-ZVI	EDTA-Cu（Ⅱ）	360	5.0	92.60%	〔43〕
WMF-Fe⁰	EDTA-Cu（Ⅱ）	30	4.0	38.2 mg/g	〔44〕
S-NZVI	EDTA-Cd（Ⅱ）	1	2.0~7.0	99.9%	〔45〕
GR_ME（SO₄ ^2-）	EDTA-Cu（Ⅱ）	60	8.0	126.4 mg/g	〔46〕
Structural Fe²⁺	EDTA-Cu（Ⅱ）	60	7.7	101.21 mg/g（以Cu²⁺计）	〔47〕
MG	EDTA-Cu（Ⅱ）	1 440	3.0	89.85 mg/g	〔48〕
水铁矿（Fh）	EDTA-Cr（Ⅲ）	60	3.0	22.93 mg/g	〔49〕
Fh-Al-6	EDTA-Cr（Ⅲ）	60	3.0	32.33 mg/g	〔50〕

吸附技术	传统吸附/去除技术	新型吸附技术
吸附技术	Fe²⁺/Fe³⁺耦合碱沉淀、硫化物沉淀、活性炭吸附	有机吸附剂吸附	零价铁吸附	亚稳态铁氧化物吸附
优点	去除率高、适用范围广	选择性强、可再生	还原性强、去除率高	反应活性高、官能团丰富、可再生、吸附选择性好
局限性	离子利用率低、污泥产量大	成本高、易产生二次污染	吸附材料易团聚、稳定性差、再生困难	吸附剂种类少、关注度低

吸附技术	传统吸附/去除技术	新型吸附技术
吸附技术	Fe²⁺/Fe³⁺耦合碱沉淀、硫化物沉淀、活性炭吸附	有机吸附剂吸附	零价铁吸附	亚稳态铁氧化物吸附
优点	去除率高、适用范围广	选择性强、可再生	还原性强、去除率高	反应活性高、官能团丰富、可再生、吸附选择性好
局限性	离子利用率低、污泥产量大	成本高、易产生二次污染	吸附材料易团聚、稳定性差、再生困难	吸附剂种类少、关注度低

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