In this study, the objective was to examine the utilization of the pyrolyzed by-products biomass as an adsorbent for extracting the dye Basic Red 46 (BR 46) from a solution. The pyrolyzed by-product containing Pleurotus mutilus biomass was characterized by thermogravimetric analysis (TGA), FTIR and µXRF. Different parameters effects such as, adsorbent dose, solution pH, contact time, temperature and initial dye concentration on the adsorption capacity of the pyrolyzed by-product biomass were examined. The solution was analyzed before and after the adsorption studies. With adsorbent dose of 1 g/L, contact time of 14 min, and solution pH of 7.5, the optimum yield of 88% was achieved. In order to fit the equilibrium data, the Langmuir, Freundlich, Temkin, and Khan isotherm models were used, and in order to fit the kinetics data, the pseudo-first-order, pseudo-second-order, Elovich, and Ritchie models were employed. Statistical analysis such as R², RMSE,\({\chi }^{2}\) and ARE was used to assess which model has the best fit with the experimental data. The results demonstrated that the experimental equilibrium data are well described by the Langmuir model, and the kinetic studies indicated that the adsorption of BR46 followed the Ritchie model. The greatest BR 46 adsorption capacity determined from experimental equilibrium data was around 135 mg/g at pH = 7.5, adsorbent dosage of 1 g/L. Moreover, thermodynamic analysis has demonstrated that the adsorption process was physical, exothermic, and spontaneous in nature. These results indicated that pyrolyzed by-product biomass might be used as a cheap material to extract textile colors out of aqueous effluents.

在本研究中，目的是检查热解副产物生物质作为吸附剂从溶液中提取染料碱性红 46 (BR 46) 的用途。通过热重分析 (TGA)、FTIR 和μXRF对含有Pleurotus mutilus生物质的热解副产物进行了表征。研究了不同参数如吸附剂剂量、溶液pH值、接触时间、温度和初始染料浓度对热解副产物生物质吸附能力的影响。在吸附研究之前和之后对溶液进行分析。当吸附剂用量为1 g/L、接触时间为14 min、溶液pH值为7.5时，最佳产率达到88%。为了拟合平衡数据，使用了 Langmuir、Freundlich、Temkin 和 Khan 等温线模型；为了拟合动力学数据，使用了伪一级、伪二级、Elovich 和 Ritchie 模型受雇。使用R ²、RMSE、\({\chi }^{2}\)和 ARE等统计分析来评估哪个模型与实验数据最吻合。结果表明，Langmuir模型很好地描述了实验平衡数据，动力学研究表明BR46的吸附遵循Ritchie模型。根据实验平衡数据确定，在 pH = 7.5、吸附剂用量为 1 g/L 时，BR 46 的最大吸附容量约为 135 mg/g。此外，热力学分析表明吸附过程本质上是物理的、放热的和自发的。这些结果表明，热解副产物生物质可用作从废水中提取纺织品颜色的廉价材料。