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通过根据功能补充策略制备的吸附剂,有效地从不健康的地表水中去除低度的酸盐

Benhang Li¹, Yanhao Chen¹, Gengbo Ren¹

¹School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China.

The Science of the total environment

|August 25, 2023

概括

这项研究开发了一种基于工业固体废物的低成本酸盐吸收材料 (PAM),用于处理低度污染的地表水. 优化的PAM有效地去除,并产生一种有价值的肥料副产品.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
水处理处理水的方法

背景情况:

低度污染的地表水 (LP-SW) 构成了全球环境的重大挑战.
吸附是一种具有成本效益和实用的LP-SW整治方法.
工业固体废物 (ISWs) 为开发新型吸收材料提供了一个可持续的来源.

研究的目的:

从ISWs开发一个高效和经济的酸盐吸收材料 (PAM).
为了优化PAM的制备,以提高酸盐吸附.
评估产生的材料作为肥料前体的潜力.

主要方法:

通过结合煤灰 (CA),碳化渣 (CS) 和铁盐来合成PAM.
优化了PAM制备的材料比率和烤条件.
与环境标准相比,描述了PAM的吸附性能和废水质量.
研究了吸附机制和材料再生.

主要成果:

优化的PAM (Fe/CC-2opt) 显示出高酸盐吸附效率.
废水符合地表水质量标准 (pH 6.0-9.0).
硫酸铁的添加促进了布鲁希特的形成 (肥料的潜力) 超过酸.
吸附机制包括表面沉,复杂化和静电相互作用.
PAM的准备成本为80美元/,治疗成本为0.07美元/g.
在五个循环后,再生效率仍然高于80%.

结论:

从ISW开发了一个具有成本效益的PAM,用于LP-SW整治.
PAM对具有高吸附能力的商业生产有希望.
该研究为可持续的除和资源回收提供了技术基础.

关键词:

吸收剂可以吸收.布拉希特是一种石头.碳化物渣是一种碳化物渣.煤灰是一种煤灰.工业固体废物工业固体废物低度酸盐是一种低度的酸盐.

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