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首页> 外文期刊>African Journal of Biotechnology >Removal of heavy metals (Pb2+, Cu2+ and Cr3+) from aqueous solutions using five plants materials
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Removal of heavy metals (Pb2+, Cu2+ and Cr3+) from aqueous solutions using five plants materials

机译：使用五种植物原料去除水溶液中的重金属（Pb2 +，Cu2 +和Cr3 +）

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The hazardous ill effects of heavy metals on the environment and public health is a matter of serious concern. Biosorption is emerging as a sustainable effective technology.?Heavy metals in water resources are one of the most important environmental problems of countries. The intensification of industrial activity and environmental stress greatly contributes to the significant rise of heavy metal pollution in water resources making threats on terrestrial and aquatic life. The toxicity of metal pollution is slow and interminable, as these metal ions are non bio-degradable.?The aim of this study was to investigate the removal of heavy metals (Pb2+, Cu2+and Cr3+) using five?plants materials.?These materials were used as sorbent for the removal of Pb, Cu and Cr ions from aqueous media. The five plants were collected different region in Ardabil province and after being dried,?were cut into small pieces of size 5 mm. The materials were washed with distilled water, filtered and finally dried overnight at 60°C. They were homogenized to mesh 100 in a mortar and bolter and subsequently used for adsorption experiments. Adsorption studies were performed by batch experiments as a function of process parameters (such as sorption time and pH). Freundlich model fitted best with the experimental equilibrium data among the all tasted adsorption isotherm models. Experimental results showed that the best pH for adsorption was 4 and time was 60 min. This study also showed that absorbent prepared from?Arnebia linearifolia?and?Artemisia fragrans?species were suitable adsorbent to remove the Pb and Cr?heavy metal ions.
机译：重金属对环境和公共健康的有害危害是一个令人严重关注的问题。生物吸收正在成为一种可持续的有效技术。水资源中的重金属是国家最重要的环境问题之一。工业活动的加剧和环境压力极大地导致了水资源中重金属污染的显着增加，从而对陆地和水生生物构成了威胁。由于这些金属离子是不可生物降解的，因此金属污染的毒性是缓慢而无限的。本研究的目的是研究使用五种植物材料去除重金属（Pb2 +，Cu2 +和Cr3 +）的方法。该材料用作吸附剂，用于从水性介质中去除Pb，Cu和Cr离子。将五种植物收集在阿尔达比勒省的不同地区，干燥后切成5毫米的小块。用蒸馏水洗涤材料，过滤，最后在60℃下干燥过夜。将它们在研钵和锚杆中均化为筛网100，随后用于吸附实验。通过分批实验根据工艺参数（例如吸附时间和pH）进行吸附研究。 Freundlich模型最适合所有口味的吸附等温线模型中的实验平衡数据。实验结果表明，最佳吸附pH为4，时间为60 min。这项研究还表明，由“ Arnebia linearifolia”和“ Artemisia fragrans”物种制备的吸收剂是去除Pb和Cr重金属离子的合适吸附剂。

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