以农业废物为基础的生物质残留物利用,以有效吸附重金属
1ICAR Research Complex for NEH Region, Sikkim Centre, Gangtok, Sikkim, 737102, India. shaon.iari@gmail.com.
Environmental monitoring and assessment
|October 16, 2024
概括
农业废物衍生生物炭有效地去除重金属和处理废水. 这项研究显示,和等污染物显著减少,为废水管理提供了可持续的解决方案.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 废物管理 废物管理
背景情况:
- 农业废弃物生物质残留物是一个处置挑战.
- 从废弃生物质生产生物炭提供了价值化潜力.
- 从废水中有效地去除重金属对于环境保护至关重要.
研究的目的:
- 将四种类型的农业废弃物生物质提升为生物炭.
- 研究这些生物炭在从水溶液中去除六种常见重金属离子 (As,Cd,Pb,Ni,Zn,Cu) 的有效性.
- 评估生物炭处理对废水质量参数的影响.
主要方法:
- 四种农业废物生物质残留物 (大豆,麦,Artemisia vulgaris,Chromolaena odorata) 被转化为生物炭.
- 生产的生物炭的组成特征.
- 进行了批量吸附实验,以评估重金属去除效率和废水处理性能.
主要成果:
- 所有生物炭都有效地去除了六种重金属的混合物,的去除率最高,的去除率最低.
- 平均重金属去除率在不同金属和生物炭中从41.85%到62.42%不等.
- 废水处理导致COD,TSS,氨,TKN,TP和pH的显著降低,同时降低了重金属如Zn,Pb,Cd,As,Cr和Cu的含量.
结论:
- 将农业废弃物生物质转化为生物炭是一种生产低成本吸附剂的可行方法,用于重金属的去除.
- 生物炭的应用表明,同时进行重金属整治和废水处理的巨大潜力.
- 这种方法提供了一种可持续的途径,以遵守废水处理法规.
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