Sequent Adsorption of phosphate ions by Copper ions Adsorbed on Tripolyphosphate Chitosan

Autor:	Thai Anh Nguyen, Huu Trung Bui, Vu Bich Hanh Dang, Thi Bich Huyen Trinh, Thi Huynh Tram Le, Vinh Tien Nguyen
Rok vydání:	2023
Předmět:	General Earth and Planetary Sciences General Environmental Science
Zdroj:	Oriental Journal Of Chemistry. 39:295-302
ISSN:	2231-5039 0970-020X
DOI:	10.13005/ojc/390209
Popis:	In this study, we successfully crosslinked chitosan using STPP and produced chitosan beads to adsorb copper ions and subsequently phosphate ions from aqueous solutions. The optimal concentrations of chitosan (2% w/v) and STPP (7.5% w/v) during chitosan beads preparation and the optimal pH of 5.0 during adsorption were determined. Several adsorption models, including pseudo-first-order, pseudo-second-order, Langmuir, and Freundlich models, were used to evaluate the static adsorption experimental data. Moreover, the chitosan beads were applied in a dynamic adsorption column and several models including Bohart-Adam, Thomas, Yoon-Nelson, and Clark models were used to describe the system. This study showed that after adsorbing heavy metal ions, chitosan-STPP beads can be used for further adsorption of toxic anions from wastewater.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9576219358b7758498adbe97fd13c12b https://doi.org/10.13005/ojc/390209 Zobrazit plný text záznamu