نوع مقاله : مقاله پژوهشی
نویسندگان
1 مهندسی محیط زیست، دانشگده مهندسی شیم، دانشگاه صنعتی سهند، تبریز، ایران
2 دانشکده مهندسی شیمی، دانشگاه صنعتی سهند، تبریز ، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This study investigates the synthesis of porous biocarbon materials derived from wet potato peel for the removal of cationic dyes from aqueous solutions. The temperature and residence time of hydrothermal carbonization(HTC) was investigated on hydrochar(HC) production. Additionally, modification parameters, including the type of modifier (K₂CO₃ or NH₄Cl), mass ratio(1–3), and modification temperature(400–800°C), were systematically evaluated to study their effects on the physicochemical properties of modified hydrochar(MHC). The adsorption performance was examined under varying conditions, including solution pH, isotherms and kinetics adsorption, and the mechanism of methylene blue removal. Results showed that K₂CO₃ significantly enhanced the SBET and adsorption performance of MHC due to surface interactions with HC. Maximum adsorption capacities of HC and MHC were achieved as 17.6 mg·g⁻¹ and 84.5 mg·g⁻¹, respectively, under alkaline conditions (pH ≥8). Adsorption data fitted well to the Langmuir isotherm and pseudo-second-order kinetic model (R² > 0.99), indicating chemisorption as the dominant mechanism. These findings demonstrate the potential of HTC in reducing wet organic waste and producing carbon-based nanostructured adsorbents.
کلیدواژهها [English]
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