Wastewater Treatment by Improving the Local Clay Capacity with Chemical and Thermal Activation

IF 0.4 Q4 ENVIRONMENTAL SCIENCES

Asian Journal of Water, Environment and Pollution Pub Date : 2023-11-27 DOI:10.3233/ajw230079

Nourelhouda Babaami, Ammar Zobeidi, Louiza Zenkheri, Souheyla Boudjema, Ghania Ben Azia, Ahlem Benhania

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引用次数: 0

Abstract

Worldwide, liquid effluents are generally discharged into the environment untreated, which, in turn, are affecting humans, animals and plants. Preserving our environment is a priority, especially with the emergence of epidemics in recent years. As a part of our investigation, we aim to treat the wastewater of the Ouargla region by enhancing the adsorption capacity of local clay collected from El-Oued (Elmghaier, south of Algeria) using thermo-chemical activation for the removal of organic pollutants. The clay used was (illite, kaolinite, and quartz 62.0%, 27.0% and 11.1%, respectively). The experiments proved the efficiency of enhancing the adsorption capacity of local clay by thermo-chemical activation in the treatment of urban wastewater to determine the efficiency by the following characteristics: chemical oxygen demand, biochemical oxygen demand, total suspended solids, and turbidity, respectively. Acid-activated clay with sulphuric acid achieved high efficiency on polluted water purification at the ideal concentration (0.75 N) and an adsorption rate of (80.16%, 90.74%, 93.33% and 90.74%), while the result decreased in the optimal concentration of acid activated clay HCl (0.134 N) and the adsorption rate was 73%, 60.92%, 94.31% and 65.57%. The thermal activation effect of the clay studied under optimal temperature conditions (400°C) shows that the adsorption ratio increased with higher temperatures (82%, 65%, 89.56% and 78.65%).

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通过化学和热活化提高当地粘土容量来处理废水

在世界范围内，液体污水通常未经处理就被排放到环境中，进而对人类、动物和植物造成影响。保护环境是当务之急，尤其是近年来流行病的出现。作为研究的一部分，我们的目标是利用热化学活化技术提高从 El-Oued（阿尔及利亚南部的 Elmghaier）采集的当地粘土的吸附能力，以去除有机污染物，从而处理瓦尔格拉地区的废水。使用的粘土为伊利石、高岭石和石英，分别占 62.0%、27.0% 和 11.1%。实验证明了通过热化学活化提高当地粘土的吸附能力在处理城市污水中的效率，分别通过以下特征来确定效率：化学需氧量、生化需氧量、总悬浮固体和浊度。硫酸酸性活化粘土在理想浓度（0.75 N）下对污染水的净化效率较高，吸附率分别为（80.16%、90.74%、93.33%和 90.74%），而酸性活化粘土盐酸的最佳浓度（0.134 N）下效果下降，吸附率分别为 73%、60.92%、94.31%和 65.57%。在最佳温度条件（400°C）下研究的粘土热活化效应表明，吸附率随着温度的升高而增加（82%、65%、89.56% 和 78.65%）。

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来源期刊

Asian Journal of Water, Environment and Pollution ENVIRONMENTAL SCIENCES-

CiteScore

1.00

自引率

20.00%

发文量

期刊介绍： Asia, as a whole region, faces severe stress on water availability, primarily due to high population density. Many regions of the continent face severe problems of water pollution on local as well as regional scale and these have to be tackled with a pan-Asian approach. However, the available literature on the subject is generally based on research done in Europe and North America. Therefore, there is an urgent and strong need for an Asian journal with its focus on the region and wherein the region specific problems are addressed in an intelligent manner. In Asia, besides water, there are several other issues related to environment, such as; global warming and its impact; intense land/use and shifting pattern of agriculture; issues related to fertilizer applications and pesticide residues in soil and water; and solid and liquid waste management particularly in industrial and urban areas. Asia is also a region with intense mining activities whereby serious environmental problems related to land/use, loss of top soil, water pollution and acid mine drainage are faced by various communities. Essentially, Asians are confronted with environmental problems on many fronts. Many pressing issues in the region interlink various aspects of environmental problems faced by population in this densely habited region in the world. Pollution is one such serious issue for many countries since there are many transnational water bodies that spread the pollutants across the entire region. Water, environment and pollution together constitute a three axial problem that all concerned people in the region would like to focus on.