Department of Environmental Engineering, Harran University, Sanliurfa, Turkey.
Int J Phytoremediation. 2022;24(4):436-446. doi: 10.1080/15226514.2021.1951656. Epub 2021 Aug 2.
The adsorption of Malachite Green (MG) from aqueous solution was achieved using biochar derived from sheep manure pyrolyzed at 450 °C. Sheep manure biochar was characterized before and after adsorption of MG by SEM and FTIR. In addition, surface area measurement was performed by BET surface area and pore analyzer. The influence of contact time, pH, dose, temperature, and initial MG concentrations on the adsorption of MG onto sheep manure biochar (SMB) was investigated in experiments. Langmuir, Freundlich, Temkin, and Dubinin-Raduskevich isotherm models were used to analyze the data. Results assumed best fitting model is Langmuir isotherm model ( value 0.99). Mean free adsorption energy () was obtained 94.71 kJ mol, value was between 0.013 and 0.14. That indicates monolayer, favorable, and physisorption adsorption, as well as an endothermic adsorption process. Maximum uptake value from Langmuir model obtained 208.33 mg g. Surface area of SM biochar was 11.731 m g.This study is the first study on the adsorption of malachite green dye substance on sheep manure derived biochar.A natural and cheap adsorbent with high dye removal, such as 208,33 mg g.A guiding study for the conversion of agricultural waste into products with highly added value.
利用在 450°C 下热解羊粪制备的生物炭实现了从水溶液中吸附孔雀石绿（MG）。通过 SEM 和 FTIR 对吸附 MG 前后的羊粪生物炭进行了表征。此外，通过 BET 表面积和孔径分析仪进行了表面积测量。实验考察了接触时间、pH 值、剂量、温度和初始 MG 浓度对 MG 吸附到羊粪生物炭（SMB）上的影响。采用 Langmuir、Freundlich、Temkin 和 Dubinin-Raduskevich 等温模型对数据进行了分析。结果假设最佳拟合模型是 Langmuir 等温模型（ 值为 0.99）。平均自由吸附能（ ）为 94.71 kJ mol ， 值在 0.013 和 0.14 之间。这表明是单层、有利和物理吸附，以及吸热吸附过程。从 Langmuir 模型获得的最大吸附值为 208.33 mg g 。SM 生物炭的表面积为 11.731 m g 。本研究是首次研究孔雀石绿染料物质在羊粪衍生生物炭上的吸附。作为一种具有高染料去除率（如 208.33 mg g ）的天然且廉价的吸附剂。这为将农业废物转化为高附加值产品提供了指导研究。
