利用稻壳生物炭单一和同时吸附水溶液中的艾氏剂和有毒金属

IF 1.3 4区农林科学 Q2 MATERIALS SCIENCE, PAPER & WOOD

Bioresources Pub Date : 2023-11-15 DOI:10.15376/biores.19.1.257-275

Tibamba Mathew Tichem, Youbao Wang, Raphael B. H. Gameli, Bawa Mbage, Abudu Ballu Duwiejuah, Nannan Wang, Li Bing

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引用次数: 0

摘要

最近的研究探索了稻壳生物炭作为一种低成本吸附剂去除水溶液中污染物的潜力，包括艾氏剂、汞（Hg2+）、铅（Pb2+）和镉（Cd2+）。实验包括在不同污染程度的废水中加入不同剂量的生物炭，搅拌混合物 60 分钟，然后过滤溶液进行分析。实验结果表明，生物炭的去除率令人印象深刻：艾氏剂的去除率为 100%，Hg2+ 的去除率为 99.92% - 99.99%，Pb2+ 的去除率为 95.90% - 99.52%，Cd2+ 的去除率为 88.60% - 99.46%。在二元和四元混合物中，除艾氏剂外，Hg2+ 的去除率高于 Pb2+ 和 Cd2+。吸附顺序为艾氏剂 > Hg2+ > Pb2+ > Cd2+。Freundlich 吸附等温线最适合描述单组分和四组分重金属的吸附，而 Langmuir 吸附等温线则更适合二元组分。因此，该研究强调稻壳生物炭是一种高效、可持续和环保的废水处理选择。

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Mono and simultaneous adsorption of aldrin and toxic metals from aqueous solution using rice husk biochar

Recent research has explored the potential of rice husk biochar as a low-cost adsorbent for the removal of contaminants from aqueous solutions, including aldrin, mercury (Hg2+), lead (Pb2+), and cadmium (Cd2+). Experimentation involved adding varying doses of biochar to wastewater with different contamination levels, agitating the mixture for 60 min, and filtering the solutions for analysis. The experiment revealed impressive removal efficiencies: 100% for aldrin, 99.92% – 99.99% for Hg2+, 95.90% – 99.52% for Pb2+, and 88.60% – 99.46% for Cd2+. In binary and quaternary mixtures, Hg2+ showed higher removal efficiency than Pb2+ and Cd2+, with the exception of aldrin. The adsorption order was identified as aldrin > Hg2+ > Pb2+ > Cd2+. The Freundlich adsorption isotherm best described heavy metals in the mono and quaternary component adsorption, while the Langmuir adsorption isotherm was a better fit for the binary component. Consequently, the study highlights rice husk biochar as an efficient, sustainable, and environmentally friendly option for wastewater treatment.

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来源期刊

Bioresources 工程技术-材料科学：纸与木材

CiteScore

2.90

自引率

13.30%

发文量

397

审稿时长

2.3 months

期刊介绍： The purpose of BioResources is to promote scientific discourse and to foster scientific developments related to sustainable manufacture involving lignocellulosic or woody biomass resources, including wood and agricultural residues. BioResources will focus on advances in science and technology. Emphasis will be placed on bioproducts, bioenergy, papermaking technology, wood products, new manufacturing materials, composite structures, and chemicals derived from lignocellulosic biomass.