The aim of the present study is the synthesis of activated carbon (AC) from different agricultural wastes such as tea and plane tree leaves in order to use them for the removal of pramipexole dihydrochloride (PRM) from aqueous solutions. Two different carbonization and synthetic activation protocols were followed, with the herein-proposed ultrasound-assisted two-step protocol leading to better-performing carbon, especially for the tea-leaf-derived material (TEA(char)-AC). Physicochemical characterizations were performed by Fourier-transform infrared spectroscopy (FTIR), N₂ physisorption, and scanning electron microscopy (SEM). TEA(char)-AC presented the highest surface area (1151 m²/g) and volume of micro and small mesopores. Maximum capacity was found at 112 mg/g for TEA(char)-AC at an optimum pH equal to 3, with the Langmuir isotherm model presenting a better fitting. The removal efficiency of TEA(char)-AC is higher than other biomass-derived carbons and closer to benchmark commercial carbons.

中文翻译：

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茶和平板树叶片生物质衍生的活性多孔碳，用于去除废水中的化合物

本研究的目的是从不同的农业废物（如茶和梧桐叶）合成活性炭（AC），以便将其用于从水溶液中去除普拉克索二盐酸盐（PRM）。遵循了两种不同的碳化和合成活化方案，本文提出的超声辅助两步方案可产生更好的碳，特别是对于茶源材料（TEA（char）-AC）。通过傅立叶变换红外光谱（FTIR），N ₂物理吸附和扫描电子显微镜（SEM）进行理化表征。TEA（char）-AC的表面积最大（1151 m ²/ g）和微孔和小孔的体积。在最佳pH等于3的条件下，TEA（char）-AC的最大容量为112 mg / g，Langmuir等温模型表现出更好的拟合度。TEA（char）-AC的去除效率高于其他生物质衍生的碳，并且接近基准商业碳。