Effects of pH and metal ions on oxytetracycline sorption to maize-straw-derived biochar

• Published in: Bioresource technology Vol. 136; pp. 87 - 93
• Main Authors: Jia, Mingyun, Wang, Fang, Bian, Yongrong, Jin, Xin, Song, Yang, Kengara, Fredrick Orori, Xu, Renkou, Jiang, Xin
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.05.2013; Elsevier
• Subjects: Adsorption; Adsorption - drug effects; Agronomy. Soil science and plant productions; aqueous solutions; biochar; Biodegradation, Environmental; Biodegradation, Environmental - drug effects; Biological and medical sciences; Cation exchange; Cation exchanging; Charcoal; Charcoal - pharmacology; chemistry; Complexation; drug effects; Fourier transform infrared spectroscopy; Fundamental and applied biological sciences. Psychology; General agronomy. Plant production; Hydrogen-Ion Concentration; Hydrogen-Ion Concentration - drug effects; Ionizable amphoteric compound; Ions; isolation & purification; Kinetics; Metal bridging; Metal ions; metals; Metals - pharmacology; Osmolar Concentration; Oxytetracycline; Oxytetracycline - isolation & purification; pharmacology; Residues; Sorption; Spectroscopy, Fourier Transform Infrared; Static Electricity; Use of agricultural and forest wastes. Biomass use, bioconversion; Waste Products; Zea mays; Zea mays - chemistry; Zeta potential; π–π Interaction; Metal bridging; Cation exchange; π–π Interaction; Ionizable amphoteric compound; Monocotyledones; Zea mays; Metal ion; π―π Interaction; Metal; Biochar; lonizable amphoteric compound; Cereal crop; Straw; Carbonization; Oxytetracycline; Sorption; Gramineae; Angiospermae; pH; Spermatophyta

► Oxytetracycline (OTC) sorbed to biochar according to pseudo-second-order kinetics. ► OTC sorption increased with increasing pH but decreased at high pH values. ► Zwitterions are the most sorbed oxytetracycline species on biochar. ► Cu2+ strongly enhances the sorption of OTC to biochar through meta...