Development of composition and study of sorbent properties based on saponite

IF 2.4 Q2 MINING & MINERAL PROCESSING Journal of Mining Institute Pub Date : 2023-03-02 DOI:10.31897/pmi.2023.1
O. Zubkova, I. Pyagay, Ksenia Pankratieva, M. Toropchina
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Abstract

The development of a comprehensive approach to preventing the pollution of natural objects is necessary due to the high requirements of environmental legislation for the discharge of industrial wastewater. Adsorbents are used in various industries to extract heavy metals from wastewater. In this study the possibility of using saponite clay as a raw material for the production of sorbent for the extraction of copper ions Cu2+ from industrial wastewater is considered, a recipe and technology of sorbent production are developed, and its chemical composition is established. It has been established that the optimum temperature for heat treatment of the sorbent and corresponds to 550 ºC, since at this temperature saponite extrudates acquire strength (strength 34.1 kg/mm2) and textural properties (specific surface area of pellets 22.803 m2/g), allowing them to be used as sorbents. The kinetics of molecular adsorption was studied using model solutions of copper (II) sulfate. The extraction efficiency of copper (II) ions from the model solutions is 93 %. Extraction efficiency of copper (II) ions from copper plating wastewater reaches 94 %. SEM results confirm the presence of metal on the sorbent surface.
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皂土吸附剂的组成及性能研究
由于环境立法对工业废水的排放有很高的要求,因此有必要制定一种防止自然物体污染的综合方法。吸附剂在各行各业中用于从废水中提取重金属。研究了以皂土为原料生产工业废水中铜离子Cu2+吸附剂的可能性,开发了吸附剂生产的配方和工艺,确定了其化学成分。已经确定了吸附剂热处理的最佳温度为550℃,因为在此温度下皂化土挤出物获得强度(强度34.1 kg/mm2)和质地特性(颗粒的比表面积22.803 m2/g),使其可以用作吸附剂。采用硫酸铜模型溶液研究了分子吸附动力学。模型溶液中铜(II)离子的萃取效率为93%。对镀铜废水中铜(II)离子的萃取率达到94%。扫描电镜结果证实吸附剂表面存在金属。
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来源期刊
Journal of Mining Institute
Journal of Mining Institute MINING & MINERAL PROCESSING-
CiteScore
7.50
自引率
25.00%
发文量
62
审稿时长
8 weeks
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