Microwave and thermal treatment methods have been applied in order to produce two derived active carbons using waste date pits/stones from a date syrup processing plant. The adsorption properties of the two products have been tested for the adsorption of the toxic Malachite Green dye, which is commonly applied in the textile and plastics industry. Equilibrium isotherms were determined by experiment and evaluated using six isotherm correlations. The optimum fitting correlation for the thermally treated product was the Langmuir-Freundlich isotherm and for the microwave product was the Redlich-Peterson. The surface areas of the thermal product and the microwave product were 669.3 m²/g and 1123 m²/g respectively; and maximum malachite green adsorption capacities were 58 mg/g and 98 mg/g respectively. A two-stage batch adsorber model has been developed to optimize the two-step adsorption process to adsorb malachite green and minimize the amount of adsorbent, and therefore adsorbent cost, used for both thermal treated and microwave treated date stones. The output applications include the minimum total adsorbent for designing various percentages dye removal based on various effluent discharge concentrations and various initial dye concentrations.

已应用微波和热处理方法，以使用来自枣糖浆加工厂的废弃枣坑/石头生产两种衍生活性炭。两种产品的吸附性能都经过了对有毒孔雀石绿染料的吸附测试，该染料常用于纺织和塑料行业。平衡等温线通过实验确定并使用六个等温线相关性进行评估。热处理产品的最佳拟合相关性是 Langmuir-Freundlich 等温线，而微波产品的最佳拟合相关性是 Redlich-Peterson。热积和微波积的表面积分别为669.3 m ² /g和1123 m ²/g 分别; 和最大孔雀石绿吸附容量分别为 58 mg/g 和 98 mg/g。已开发出两阶段批量吸附器模型，以优化两步吸附过程以吸附孔雀石绿，并最大限度地减少吸附剂的用量，从而最大限度地减少用于热处理和微波处理的枣核的吸附剂成本。输出应用包括根据各种污水排放浓度和各种初始染料浓度设计各种染料去除百分比的最小总吸附剂。