Chemical Industry and Engineering Progress ›› 2021, Vol. 40 ›› Issue (6): 3455-3465.DOI: 10.16085/j.issn.1000-6613.2020-1352

• Resources and environmental engineering • Previous Articles     Next Articles

Research statue on adsorption properties and mechanism of heavy metal ions using red mud

LIU Qin1(), ZHOU Xintao1(), HUANG Jing2, LUO Zhongqiu1(), SHAO Zhoujun1, WANG Luxing1, WEI Yu1, LUO Yunlong1   

  1. 1.Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
    2.School of Mechanical and Electrical Engineering, Xichang University, Xichang 615000, Sichuan, China
  • Received:2020-07-14 Revised:2020-08-19 Online:2021-06-22 Published:2021-06-06
  • Contact: ZHOU Xintao,LUO Zhongqiu

赤泥吸附重金属离子性能及其机理研究进展

刘钦1(), 周新涛1(), 黄静2, 罗中秋1(), 邵周军1, 王路星1, 韦宇1, 雒云龙1   

  1. 1.昆明理工大学化学工程学院,云南 昆明 650500
    2.西昌学院机械与电气工程学院,四川 西昌 615000
  • 通讯作者: 周新涛,罗中秋
  • 作者简介:刘钦(1996—),男,硕士研究生,研究方向为固体物资源化利用与安全化处理。E-mail:15827824086@163.com
  • 基金资助:
    国家自然科学基金地区基金(21866018);昆明理工大学分析测试基金(2016T20160009);云南科技厅青年基金(2017FD093);云南教育厅资助性项目(2017ZZX147);云南省万人计划“青年拔尖人才”

Abstract:

Red mud (RM) is an industrial waste residue produced in the extraction process of alumina from bauxite. Red mud could be modified as a low-cost adsorbent to efficiently adsorb heavy metal ions in wastewater. In this paper, the properties and compositions of red mud were discussed. Then, the advantages of red mud in absorbing heavy metal ions were analyzed. The effects of acid modification, roasting modification, and composite modification on the adsorption performance of red mud were summarized. Given that, the mechanisms of red mud for heavy metal ions adsorption were described. The thermodynamic and kinetic models of adsorption for heavy metals were listed. Red mud, as one of industrial wastes, has advantages for the adsorption of heavy metals from wastewater, such as low cost and ready availability, which can realize the “treatment of wastes with wastes”. In our opinion, the technology of heavy metal adsorption with red mud has a promising prospect.

Key words: red mud, heavy metal ions, modification, adsorption, adsorption mechanism, wastewater

摘要:

赤泥(RM)是铝土矿提取氧化铝时排放的工业废渣,对其进行改性后可作为一种低成本吸附剂有效吸附废水中的重金属离子。本文从赤泥的性质和组成进行讨论,分析赤泥吸附重金属离子的优势,总结酸改性、焙烧改性和复合改性对赤泥结构及重金属吸附性能的影响。在此基础上,阐述了赤泥吸附重金属离子的机理,列举了吸附热力学及吸附动力学模型。指出赤泥作为一种大宗工业废弃物,用作吸附剂吸附废水中的重金属离子,具有成本低、来源广泛等优点,同时可达到以废治废的目的,具有良好的应用前景。

关键词: 赤泥, 重金属离子, 改性, 吸附, 吸附机理, 废水

CLC Number: 

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