Removal of Lead(II) and Zinc(II) from Aqueous Solutions Applying Fibber Hemp (Cannabis sativa L.)

D. Paliulis
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引用次数: 1

Abstract

Abstract Lead and zinc are heavy metals with toxic properties. These chemical elements are found in wastewater. The article deals with the removal of lead(II) and zinc(II) ions from polluted water using adsorption. As object of researches was selected natural polymer - fibber hemp (Cannabis sativa L.). Big quantities of fibber hemp are produced as waste in textile, agricultural industry, and therefore their usage could help to solve two problems -reducing quantity of fibber hemp as waste and reducing of water pollution by heavy metals. Pb(II) and Zn(II) ions adsorption with fibber hemp was investigated for contact time, pH, and heavy metal ions concentration impact. Pb(II) and Zn(II) ions biosorption rate was highest within the first hour, with optimal their biosorption recorded at pH = 5.0. Highest lead and zinc ions removal efficiency was recorded after 240-480 min and reached 60.5 and 61.7 % respectively. This study demonstrated the applicability and effectiveness of fibber hemp in lead and zinc ions removal, which could be applied for the sewage treatment plant in small scale.
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应用大麻纤维(Cannabis sativa L.)去除水溶液中的铅(II)和锌(II)
摘要铅和锌是具有毒性的重金属。这些化学元素存在于废水中。本文研究了吸附法去除污染水中的铅(II)和锌(II)离子。以天然高分子纤维大麻(Cannabis sativa L.)为研究对象。纺织、农业生产中产生了大量的废麻纤维,利用废麻纤维可以解决减少废麻纤维的数量和减少重金属对水体的污染两个问题。研究了麻纤维对Pb(II)和Zn(II)离子的吸附作用,考察了接触时间、pH和重金属离子浓度的影响。Pb(II)和Zn(II)离子在第1 h内的生物吸附率最高,pH = 5.0时吸附效果最佳。在240 ~ 480 min时,对铅和锌离子的去除率最高,分别达到60.5%和61.7%。本研究验证了麻纤维去除铅、锌离子的适用性和有效性,可用于小型污水处理厂。
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