نوع مقاله : مقاله پژوهشی
نویسندگان
مرکز تحقیقات کربن سبز دانشکده مهندسی شیمی، دانشگاه صنعتی سهند، تبریز ، ایران، صندوقپستی: 513351996
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This study investigates synthesizing porous biocarbon materials derived from wet potato peel to remove cationic dyes from aqueous solutions. The influence of wet carbonization process parameters (temperature, residence time) on the synthesis of hydrochar (HC) and the effect of modification process parameters including the type of modifying agent (potassium carbonate and ammonium chloride), mass ratio (1-3), and modification temperature (400-800 °C) on the physicochemical properties of the modified hydrochar (MHC) were investigated. 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 MHC's SBET and adsorption performance 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. Therefore, wet carbonization presents a valuable strategy for minimizing wet organic waste and creating nano-structured carbon adsorbents for environmental applications.
کلیدواژهها [English]
Abdi J. Prediction of the adsorption amount of azo dyes pollutants from wastewater using porous metal-organic framework adsorbents. J Color Sci Tech. 2022;16(3):267-
280. https://dorl.net/dor/20.1001.1.17358779.1401.16.3.7.3 [In Persian].