使用生物转化矿从水溶液中去除重金属离子
Jianguo Cheng1,2, Shanfei Zhang3, Chen Fang2
1Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Baotou 014010, China.
Molecules (Basel, Switzerland)
|July 14, 2023
概括
使用Fusarium细菌 (BLA) 修改的煤有效地从废水中去除重金属. 这种低成本的吸附剂显示了铜和其他金属离子的增强容量和表面积.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 生物技术是生物技术.
背景情况:
- 工业废水中的重金属污染对全球环境构成重大威胁.
- 传统的重金属去除方法往往是昂贵和低效的.
- 岩是一种低成本的有机材料,具有作为吸附剂的潜力,但需要修改以提高性能.
研究的目的:
- 开发一种低成本,有效的吸附剂,用于从工业废水中去除重金属.
- 为了研究生物转化煤对重金属离子的吸附性质.
- 为了评估在微生物修饰后煤的结构和化学变化.
主要方法:
- 州煤用Fusarium细菌B3进行了修改,以创建一种生物转化煤吸收剂 (BLA).
- 分析了BLA的特定表面积和元素组成 (O,H,N).
- 使用Cu(II) 溶液进行了吸附实验,以确定吸附动力学和异热量.
- 研究了结构性质和活跃的功能组.
主要成果:
- 生物转化使煤的特定表面积从1.81到5.66m2·g-1增加,并增加了O,H和N含量.
- 吸附数据与伪二次动力学和兰格穆尔异温模型相吻合.
- 在理论上,BLA的Cu (II) 吸附能力达到71.47 mg·g-1.1.
- 与原始红石相比,BLA对Cu (II),Mn (II),Cd (II) 和Hg (II) 的吸附性得到了改善.
- 中性pH值和大颗粒大小有利于重金属吸附.
结论:
- 使用Fusarium细菌进行微生物转化是一种有前途的方法,可以提高煤对重金属的吸附能力.
- 在BLA中增加的多孔性,特定表面积和活性功能群 (-COOH,Ar-OH,R-OH) 导致其优异的吸附性能.
- 生物转化煤 (BLA) 为从工业废水中去除重金属提供了具有成本效益和高效的解决方案.
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