Novel palm peat lignocellulosic adsorbent derived from agricultural residues for efficient methylene blue dye removal from textile wastewater

• DOI: 10.1007/s13201-025-02363-y
• Publication Date: 2025-01-27T08:28:30Z
• Authors: Mohamed Mohamed G...; Hassan Shokry; Ahmed H. Hassanin; Said Awad; Mahmoud Samy; Marwa Elkady
• Keywords: Methylene blue; Textile; Textile industry

Abstract Palm Peat (PP), the world’s first rich lignocellulosic medium derived from date palm agricultural residues, has not been previously explored for environmental purification. This study evaluates PP's performance in adsorbing methylene blue (MB) dye. PP is characterized by a spongy, porous structure with surface area of 16 m 2 /g. It possesses significant carbon and oxygen composition features active functional groups. Under conditions 30 mg/L initial MB concentration, 1 g/L dose, T = °C, pH 7, 900 rpm stirring speed, achieved 68.26% removal efficiency within 90 min. Although higher temperatures enhanced efficiencies, room temperature (30 °C) was chosen subsequent experiments to assess adsorption under ambient minimize energy consumption. Stirring speeds exceeding reduce efficiency, likely due shear forces disrupting interaction between molecules or causing desorption adsorbed dye molecules. Response methodology combined central composite design employed optimize dosage, solution pH. optimum conditions, 97.89% removal. exhibited strong stability over five cycles. Adsorption occurs via π-π stacking, hydrogen bonding, hydrophobic-hydrophobic interactions, electrostatic process being endothermic following Langmuir isotherm model pseudo-second-order kinetic model. The studies across different water matrices revealed lowest degradation rate drain matrix. 71.5% 48.16% TOC real textile wastewater.