| 膨润土对煤矸石溶出重金属Zn2+的吸附研究 |
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| 引用本文： | 杨成,张雁,赵蓉,任建国.膨润土对煤矸石溶出重金属Zn2+的吸附研究[J].非金属矿,2021(2):84-86. |
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| 作者姓名： | 杨成 张雁 赵蓉 任建国 |
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| 作者单位： | 内蒙古农业大学能源与交通工程学院;呼伦贝尔职业技术学院;内蒙古路桥工程技术检测有限责任公司 |
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| 基金项目： | 国家自然科学基金(51669025);内蒙古自治区研究生教育教学改革与实践项目(YJG20181012901)。 |
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| 摘 要： | 采用淋溶吸附试验,考察煤矸石淋溶液pH值、膨润土用量、吸附时间、重金属浓度4个指标,研究膨润土对煤矸石淋溶液中重金属Zn2+的吸附效果。结果表明,吸附过程在96 h后达到平衡状态;最佳膨润土掺量为30%,该掺量下吸附达到平衡时Zn2+吸附率均大于72%;吸附平衡状态下,膨润土对煤矸石淋溶液中Zn2+吸附量随pH值增加而减小;吸附过程符合双常数模型。
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| 关 键 词： | 膨润土 煤矸石 重金属Zn2+ 吸附动力学模型 |
Study on Adsorb-Ability of Zn2+Leaching from Coal Gangue by Bentonite |
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| Yang Cheng,Zhang Yan,Zhao Rong,Ren Jianguo.Study on Adsorb-Ability of Zn2+Leaching from Coal Gangue by Bentonite[J].Non-metallic Mines,2021(2):84-86. |
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| Authors: | Yang Cheng Zhang Yan Zhao Rong Ren Jianguo |
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| Affiliation: | (College of Energy and Transportation Engineering,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010018;Hulun Buir Vocational and Technical College,Hulun Buir,Inner Mongolia 021008;Inner Mongolia Road&Bridge Engineering Detection Co.,Ltd.,Hohhot,Inner Mongolia 010018) |
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| Abstract: | The leaching adsorption test was used to study the adsorption effect of bentonite on the heavy metal Zn2+in the coal gangue leaching solution by changing pH value of the coal gangue leaching solution,amount of bentonite,adsorption time,and concentration of Zn2+.The results showed that the adsorption process reached an equilibrium state after 96 h,the optimum amount of bentonite was 30%,under this condition,the adsorption rate of Zn2+was higher than 72%.The amount of Zn2+in the coal gangue leaching solution adsorbed by bentonite decreased with the increase of pH value,and the adsorption process conformed to the double constant model. |
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| Keywords: | bentonite coal gangue heavy metal Zn2+ adsorption kinetic model |
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