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首页> 外文期刊>Arabian Journal for Science and Engineering >Experimental Design Methodology for the Preparation of Activated Carbon from Sewage Sludge by Chemical Activation Process
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Experimental Design Methodology for the Preparation of Activated Carbon from Sewage Sludge by Chemical Activation Process

机译：化学活化法从污泥制备活性炭的实验设计方法论

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摘要

The objective of this study was to optimize the experimental conditions of the preparation of activated carbon from sewage sludge using an experimental design methodology. A series of carbonaceous sorbents were prepared by chemical activation with zinc chloride and sulfuric acid. The produced activated carbons were characterized, and their properties (iodine number, specific surface area, micropore volume and pH) were analyzed as a function of the experimental conditions (activation temperature, activation time and activation reagent concentration). The sewage sludge used in this study was taken from the wastewater treatment plant in Damascus (Adra plant). Response surface methodology (RSM) was applied in this study using Matlab software to determine the operating values of the experimental conditions. A second-order model, which was found to be appropriate to predict most of the responses in every experimental region, has been used to describe each response. Optimum values were then determined. The BET surface area varies from 187.5 to 307.0 m~2/g for adsorbents produced by ZnCl_2 activation and from 184.3 to 297.1 m~2/g for adsorbents produced by H_2SO_4 activation. In order to maximize the surface area, iodine number, and micropore volume of the produced activated carbon, the optimal conditions, within the studied regions, were found to be 600℃, 31 min and 5 M for ZnCl_2 activation and 464 ℃, 58 min and 5 M for H_2SO_4 activation.
机译：这项研究的目的是优化使用实验设计方法从污水污泥制备活性炭的实验条件。通过用氯化锌和硫酸进行化学活化来制备一系列含碳吸附剂。表征所产生的活性炭，并根据实验条件（活化温度，活化时间和活化试剂浓度）分析其性质（碘值，比表面积，微孔体积和pH）。本研究中使用的污水污泥取自大马士革的废水处理厂（Adra厂）。使用Matlab软件在本研究中应用了响应面方法（RSM）来确定实验条件的操作值。已经发现使用二阶模型描述每个响应，该模型适合预测每个实验区域中的大多数响应。然后确定最佳值。对于通过ZnCl 2活化产生的吸附剂，BET表面积为187.5至307.0m 2 / g，对于通过H 2 SO 4活化产生的吸附剂，BET表面积为184.3至297.1m 2 / g。为了使活性炭的表面积，碘值和微孔体积最大化，在研究区域内发现ZnCl_2活化的最佳条件为600℃，31 min和5 M，464℃，58 min为最佳条件。和5 M用于H_2SO_4激活。

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