Abstract The modeling and optimization of lead (II) adsorption was been characterized on a fabricated peanut hull-g-methyl methacrylate biopolymer. A graft copolymer from agro-based waste was prepared by copolymerizing activated carbon from peanut hulls and methyl methacrylate by the use of benzoyl peroxide as the radical initiator in the presence of an aluminum triflate cocatalyst. A central composite design (CCD) was employed to model batch adsorption experiments and optimize and characterize the influence and interaction of relevant parameters including the pH, contact time, adsorbent dosage, and initial concentration. The optimum conditions for the adsorption process were a pH of 5.7, a contact time of 63.75 min, an adsorbent dosage of 0.2250 g in 50 mL, and initial lead (II) concentration equal to 76.25 mg L−1. Under these conditions, 99.30% of lead (II) was removed from aqueous solution. Isotherm studies demonstrated that the experimental results were in accordance with the Langmuir isotherm model with maximum adsorption capacities of 370.40 and 137.0 mg g−1 in the presence and absence of the cocatalyst, respectively. The experimental results concurred with a pseudo second-order kinetic model that described the adsorption process as chemisorptive. Consequently, the peanut hull-g-methyl methacrylate prepared in the presence of an aluminum triflate cocatalyst has been shown to be potentially effective and sustainable for the remediation of lead (II) from contaminated waters.

中文翻译：

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使用响应面法 (RSM) 对新型花生壳-g-甲基丙烯酸甲酯生物聚合物对铅 (II) 吸附的建模和优化

摘要 在制造的花生壳-g-甲基丙烯酸甲酯生物聚合物上对铅 (II) 吸附的建模和优化进行了表征。以过氧化苯甲酰为自由基引发剂，在三氟甲磺酸铝助催化剂存在下，以花生壳活性炭与甲基丙烯酸甲酯共​​聚，制备了农业废弃物接枝共聚物。采用中心复合设计 (CCD) 对批量吸附实验进行建模，并优化和表征相关参数的影响和相互作用，包括 pH、接触时间、吸附剂剂量和初始浓度。吸附过程的最佳条件是 pH 为 5.7，接触时间为 63.75 分钟，吸附剂用量为 0.2250 g/50 mL，初始铅 (II) 浓度等于 76.25 mg L-1。在这些条件下，99。从水溶液中去除了 30% 的铅 (II)。等温线研究表明，实验结果与朗缪尔等温线模型一致，在助催化剂存在和不存在的情况下，最大吸附容量分别为 370.40 和 137.0 mg g-1。实验结果与将吸附过程描述为化学吸附的拟二级动力学模型一致。因此，在三氟甲磺酸铝助催化剂存在下制备的花生壳-g-甲基丙烯酸甲酯已被证明对修复受污染水中的铅 (II) 具有潜在的有效性和可持续性。在助催化剂存在和不存在的情况下分别为 0 mg g-1。实验结果与将吸附过程描述为化学吸附的拟二级动力学模型一致。因此，在三氟甲磺酸铝助催化剂存在下制备的花生壳-g-甲基丙烯酸甲酯已被证明对修复受污染水中的铅 (II) 具有潜在的有效性和可持续性。在助催化剂存在和不存在的情况下分别为 0 mg g-1。实验结果与将吸附过程描述为化学吸附的拟二级动力学模型一致。因此，在三氟甲磺酸铝助催化剂存在下制备的花生壳-g-甲基丙烯酸甲酯已被证明对修复受污染水中的铅 (II) 具有潜在的有效性和可持续性。