title: Application of laboratory prepared and commercially available biochars to adsorption of cadmium, copper and zinc ions from water.
abstract: The goal of the presented work was the evaluation and comparison of two biochars (produced from Sida hermaphrodita - BCSH/laboratory produced and from wheatstraw - BCS/commercial available) to adsorb heavy metal ions (Cd(II), Cu(II) and Zn(II)) from water. Kinetics of the sorption as well as sorption isotherms, the influence of solution pH and interfering ions were investigated. Different physico-chemical properties of biochars had the great influence on adsorption capacity. The greater adsorption efficiency was observed for BCSH than for BCS in the case of all investigated metals. The adsorption efficiency of BCSH was correlated with higher content of carbon and oxygen, what is equal with higher content of polar-groups on the BCSH surface e.g., -COOH. Furthermore, the molar ratio of O/C as well as polarity index (which was higher for BCSH) was also important parameters.
authors: Department of Environmental Chemistry, Faculty of Chemistry, Maria Curie-Sklodowska University, Poland.
authors: Aleksandra
authors: A
authors: Bogusz
authors: Department of Environmental Chemistry, Faculty of Chemistry, Maria Curie-Sklodowska University, Poland. Electronic address: patryk.oleszczuk@poczta.umcs.lublin.pl.
authors: Patryk
authors: P
authors: Oleszczuk
authors: Department of Analytical Chemistry and Instrumental Analysis, Faculty of Chemistry, Maria Curie-Sklodowska University, Poland.
authors: Ryszard
authors: R
authors: Dobrowolski
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D019216:Metals, Heavy / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods*
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; C540010:biochar; D002606:Charcoal
keywords: Adsorption; Biochar; Desorption; Heavy metals; XPS