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用兰改性茶叶废弃物生物炭的制备及其对水中的化物的吸附性能

Wei Li¹, Pengcheng Xie¹, Haiyang Zhou¹

¹School of Ecology and Environment, Tibet University, Lhasa 850012, China.

Materials (Basel, Switzerland)

|April 9, 2024

概括

来自茶叶废物的兰改性生物炭有效地从地热水中去除化物. 这种可持续的吸附剂可以实现超过95%的化物去除,为净化水提供了一个有前途的解决方案.

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:

水中的化物污染对健康构成重大风险.
开发有效和可持续的吸附剂来去除化物至关重要.
茶叶废弃物是一个未充分利用的资源,用于创造增值材料.

研究的目的:

从茶叶废物中制备和优化改性生物炭 (La-TBC),用于化物吸附.
研究La-TBC在化物去除中的吸附性能和机制.
评估La-TBC在净化实际地热泉水中的有效性.

主要方法:

茶叶废物被烧化以产生生物炭 (TBC).
用酸 (La(NO3) 3·6H2O) 修改了TBC,并使用正交实验进行了优化,以产生La-TBC.
进行了批量吸附,动力学和同热实验.
描述技术包括SEM-EDS,BET,FTIR和XRD. 这些技术是最重要的.

主要成果:

最佳La-TBC在pH 7时表现出最高的化物吸附率.
吸附遵循伪二阶动力学和兰木尔等热模型.
理论上最大的吸附能力在80°C时达到47.47mg/g.
从地热温泉水中获得了超过95%的化物去除.

结论:

拉-TBC是一种高效的吸附剂,用于从地热水中去除化物.
吸附机制涉及单层吸附,孔隙填充,离子交换和静电相互作用.
利用茶叶废弃物生产La-TBC提供了一种可持续的水资源整治方法.

关键词:

吸附吸附是一种吸附.生物炭是一种生物炭.化物化物是什么?兰他的修改方法茶叶废弃物的茶叶废弃物

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