从城市固体废物中合成氧化功能化的生物炭,用于Pb (II) 在水中去除,并可能在液整治中应用
Nkululeko Sabelo Dlamini1, Pawan Kumar Jha2, Pradeep Kumar Sharma3
1Centre of Environmental Studies, University of Allahabad, Prayagraj, Uttar Pradesh, 211002, India.
Environmental science and pollution research international
|January 27, 2026
概括
城市固体废物 (MSW) 被转化为MgO修饰的生物炭,以有效地从垃圾填埋场液中去除 (Pb). 这种可持续吸附剂实现了99.82%的Pb(II) 清除,为环境修复提供了具有成本效益的解决方案.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 垃圾填埋场液中的 (Pb (II)) 污染给环境和公共卫生带来了重大挑战.
- 有效的整治策略对于减轻重金属污染带来的风险至关重要.
研究的目的:
- 将城市固体废物 (MSW) 提升为高效的Pb (II) 吸收剂.
- 调查MgO功能化MSW衍生生物炭对Pb (II) 从垃圾填埋场浸出物中去除Pb (II) 的性能.
主要方法:
- 城市固体废物 (MSW) 衍生生物炭通过在450°C的热解来合成.
- 生物炭与氧化 (MgO) 使用MgCl2·6H2O进行了功能化.
- 进行了批量吸附实验,以评估Pb (II) 去除效率,吸附同热量和动力学.
主要成果:
- 与原始生物炭 (P-BC) 相比,MgO功能化生物炭 (MgO-BC) 显著增强了Pb(II) 的吸附,在pH值11.0时达到99.82%的去除率.
- 吸附遵循弗洛伊德利希等温和和伪二次运动模型,表明化学吸附.
- 兰木尔的最大吸附能力是P-BC的24.82 mg/g,MGO-BC的36.63 mg/g.
结论:
- MgO功能化大大提高了MSW衍生生物炭的Pb(II) 吸附能力.
- 增强的性能归因于协同机制,包括离子交换,静电吸引,复杂化,沉和孔隙扩散.
- 来自MSW的生物炭提供了一个具有成本效益和可持续的材料,用于垃圾填埋场的液处理和资源回收.
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