The enhancement of reactive red 24 adsorption from aqueous solution using agricultural waste-derived biochar modified with ZnO nanoparticles
Huu Tạp Van, Lan Huong Nguyen, N. V. Dang, Huan‐Ping Chao, Quang Trung Nguyen, Thu Huong Nguyen, Thi Bich Lien Nguyen, Đặng Văn Thành, Nguyen Duy Hai, Phan Quang Thang, Pham Thi Ha Thanh, Vinh Phu Hoang
Abstract
, pH 3, and contact time of 60 min. The adsorption of RR24 onto biochars agreed well with the pseudo-first-order model and the Langmuir isotherm. The RR24 adsorption capacity on modified biochars, which were reused after five adsorption-desorption cycles showed no insignificant drop. The main adsorption mechanisms of RR24 onto biochars were controlled by electrostatic interactions between biochars' surface positively charged functional groups with azo dye anions, pore filling, hydrogen bonding formation, and π-π interaction.
Topics & Concepts
BiocharAdsorptionLangmuir adsorption modelAqueous solutionNanoparticleHuskChemistryNuclear chemistryChemical engineeringDesorptionBagasseWastewaterOrganic chemistryEnvironmental engineeringPulp and paper industryPyrolysisBotanyBiologyEngineeringAdsorption and biosorption for pollutant removalMercury impact and mitigation studiesMembrane Separation Technologies