Optimization of a cationic dye desorption from a loaded-lignocellulosic biomass: factorial design experiments and investigation of mechanisms

The sustainable management of loaded adsorbents with organic pollutants represents an important environmental challenge. current research work investigates the regeneration process optimization raw orange tree sawdust (ROS) methylene blue (MB) by using NaCl solutions as eluent. MB desorption was assessed in static mode under different variables, notably desorbing solution’s pH and concentration MB-loaded biomass dose. A full factorial design composed 24 experiments employed to apprehend statistical significance each followed parameter. Experimental results showed that maximum yield estimated be about 82.4% for following parameter’s values: aqueous = 3, [NaCl] 0.2 M MB-loaded-ROS dosage solution 1 g·L -1 . study confirmed good fit experimental data model used well regression adjusted coefficients 99.0% 96.6%, respectively. Moreover, ranking effect studied parameter terms standardized on efficiency from ROS through ANOVA test. mechanisms involved were explored multiple analysis techniques. It appears molecules’ ROS’s particles is mainly driven a counter chemisorption based cationic exchange sodium hydronium ions present solutions.