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通过从废弃子中获得的生物炭去除水性Cr (VI) 的性能和机制

Yuting Zhang¹, Yuwei Tang¹, Ruiping Yan¹

¹Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun, 130118, China.

Environmental science and pollution research international

|August 16, 2023

概括

贝生物炭有效地从水中去除 (VI). 这种可持续的方法利用农业废物进行高效,低成本的废水处理.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
可持续化学可持续化学

背景情况:

(VI) 由于其毒性,可溶性和可移动性,造成了重大环境风险.
将废弃物生物质转化为生物炭为环境修复提供了一种可持续的方法.
子,农业废物,为开发有效的生物炭材料提供了潜在的前体.

研究的目的:

对 (VI) 从水溶液中去除的贝生物炭的有效性进行研究.
确定控制 (VI) 吸附到花外生物炭的最佳条件和机制.
评估这种生物炭作为处理 (VI) 污染水的低成本解决方案的潜力.

主要方法:

在700°C下从子中制备生物炭.
批量实验以评估在不同条件下的 (VI) 去除效率.
动力和同热模型 (伪二次和兰格穆尔) 了解吸附过程.
描述技术以阐明去除机制.

主要成果:

在180分钟内,几乎完全去除了 (50毫克L-1) 的 (VI).
吸附遵循伪二阶动力学和兰木尔异热模型,表明单层化学吸附.
在低pH (2.0) 和低 (VI) 度 (≤50毫克L-1) 观察到最佳性能.

结论:

花贝生物炭是一种高效的吸附剂,用于去除 (VI).
主要的去除机制包括静电吸引,减少和复杂化.
这项研究证明了一种有希望的,具有成本效益的方法,用于处理被 (VI) 污染的酸性废水和地下水.

关键词:

生物炭是一种生物炭.子的贝子的贝六价的六价是一种移除机制移除机制在X射线光电子光谱学中使用X射线光电子光谱.

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