Analysis of the Content and Leaching Tendency of Chromium, Magnesium, Zinc, Cesiumand Manganese from Clays into the Water

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Abstract

Clay is an economically valuable earth material which is found in a large number of certain locations around the world. In the utilizations of this earth resource, it is used in the preliminary purposes such as the pottery industry and roof tile manufacturing even though it would be much applicable material/agent for the sake advanced uses because of the variations in the physic-chemical characteristics of most of different clay verities foremost of the adsorption. The investigations of the leaching of some metallic elements to water were the aims and objectives of the existing research component prior to the choosing for the water treatment systems. In the existing research there were experimented three different types of clay types available in Sri Lanka. A few of clay samples from each of clay was dissolved in distilled water and prepared a batch of solutions after filtering each of them. The prepared solutions were analyzed using Atomic Absorption Spectroscope (AAS) for Cr, Mn, Mg, Zn and Cs. As the general outcomes of the relevant analysis, there were obtained 0.8883ppm, 7.4808ppm and 2.003ppm of Cr in anthill clay, brick clay and roof tile clay and 1.8640ppm, 3.1952ppm and 1.1408ppm of Mg in anthill clay, brick clay and roof tile clay. Also there were obtained 0.1059ppm, 0.0632ppm and 0.0863ppm of Mn in anthill clay, brick clay and roof tile clay. When comparing of the obtained results with the Sri Lankan drinking water quality norms there was found some non-hazardous conditions as the maximum permissible limits of Chromium (Cr), Magnesium (Mg) and Manganese (Mn) for drinking water are 0.05ppm, 150ppm and 0.5ppm. The long term effects on the human health as results of the long term contaminated/ non-recommended water consumption and accumulation of such elements.
粘土中铬、镁、锌、铯、锰的含量及浸出趋势分析
粘土是一种具有经济价值的土材料,在世界上许多地方都有发现。在对这一地球资源的利用中,由于大多数粘土的物理化学特性不同,主要是吸附作用,因此它是一种非常适用于高级用途的材料/剂,但主要用于制陶工业和屋顶瓦制造等初级用途。在选择水处理系统之前,研究某些金属元素对水的浸出是现有研究部分的目的和目标。在现有的研究中,在斯里兰卡试验了三种不同类型的粘土。从每种粘土中取少量粘土样品溶解于蒸馏水中,过滤后制备一批溶液。用原子吸收光谱(AAS)对制备的溶液进行了Cr、Mn、Mg、Zn和Cs的分析。总体分析结果显示,蚁丘粘土、砖粘土和屋面瓦粘土中Cr含量分别为0.8883ppm、7.4808ppm和2.003ppm,蚁丘粘土、砖粘土和屋面瓦粘土中Mg含量分别为1.8640ppm、3.52 ppm和1.1408ppm。在蚁丘粘土、砖粘土和瓦片粘土中锰含量分别为0.1059ppm、0.0632ppm和0.0863ppm。将所得结果与斯里兰卡饮用水水质标准进行比较,发现饮用水中铬(Cr)、镁(Mg)和锰(Mn)的最大允许限量分别为0.05ppm、150ppm和0.5ppm,存在一些无害条件。由于长期饮用受污染/不推荐的水和积累这些元素而对人类健康造成的长期影响。
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