Characterization of a chitosan biopolymer and arsenate removal for drinking water treatment
2014 (English)In: One Century of the Discovery of Arsenicosis in Latin America (1914-2014): As 2014 - Proceedings of the 5th International Congress on Arsenic in the Environment, CRC Press, 2014, 745-747 p.Conference paper (Refereed)
Chitosan biopolymer with a deacetylation degree of 85%, was assessed for its capability to adsorb As(V) from drinking water by batch experiments. To characterize the chitosan biopolymer, chitosan was analyzed by FTIR and SEM. The results showed that chitosan is an effective and promising sorbent for As(V) from drinking water. From the batch tests, results showed a maximum adsorption of 355 μg/L of As(V) with 1.18 μg g-1 adsorption capacity at pH 6. The kinetic data, obtained at pH 6 could be fitted with pseudo-second order equation (adsorption capacity: 0.923 μg g-1) and the process was suitably described by a Freundlich (R2 = 0.9933) model than by a Langmuir model (R2 = 0.9741). The results above indicated that chitosan is a very favorable sorbent for As(V) removal from aqueous solution.
Place, publisher, year, edition, pages
CRC Press, 2014. 745-747 p.
Acetylation, Arsenic, Biomolecules, Chitosan, Adsorption capacities, Arsenate removal, Batch experiments, Batch tests, Deacetylation degree, Kinetic data, Langmuir models, Pseudo second order
IdentifiersURN: urn:nbn:se:kth:diva-157896ScopusID: 2-s2.0-84907339239ISBN: 978-113800141-1OAI: oai:DiVA.org:kth-157896DiVA: diva2:772689
5th International Congress on Arsenic in the Environment, As 2014, 11 May 2014 through 16 May 2014, Buenos Aires, Argentina
QC 201412172014-12-172014-12-172014-12-17Bibliographically approved