eprintid: 8897
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/88/97
datestamp: 2023-11-09 16:20:50
lastmod: 2023-11-09 16:20:50
status_changed: 2023-11-09 16:13:48
type: article
metadata_visibility: show
creators_name: Vakili, M.
creators_name: Rafatullah, M.
creators_name: Ibrahim, M.H.
creators_name: Abdullah, A.Z.
creators_name: Gholami, Z.
creators_name: Salamatinia, B.
title: Enhancing reactive blue 4 adsorption through chemical modification of chitosan with hexadecylamine and 3-aminopropyl triethoxysilane
ispublished: pub
note: cited By 22
abstract: The adsorption of dye on chitosan and its derivatives is considered as an alternative and environmentally friendly method. Nevertheless, chemical modification of chitosan can lead to a more suitable adsorbent. In this study, the adsorption performance of chemically modified chitosan beads using a cationic surfactant (hexadecylamine) and an organo-silane (3-aminopropyl triethoxysilane) was studied for removal of reactive blue 4 (RB4) dye from aqueous solution. The chemical structure, surface properties and morphology of modified chitosan beads were analysed using FTIR, SEM and zeta-potential techniques. Results revealed that the adsorption of the RB4 was more favored in acidic conditions (pH 4). After modification adsorption capacity of chitosan beads increased for 1.48 times. The maximum adsorption capacity of chitosan beads increased from 317.1 mg/g to 468.8 mg/g after modification. This increase was attributed to the increase in the positive charge of modified chitosan beads. The experimental data obtained from adsorption of RB4 onto unmodified and modified chitosan confirmed a better fitness to Freundlich isotherm model (R2 = 0.946 and 0.892, �2 = 22.414 and 45.62) as compared to Langmuir model (R2 = 0.894 and 0.777, �2 = 138.301 and 47.08). It was concluded that chemical modification is a suitable method to improve the anionic dye adsorption efficiency of chitosan beads. © 2016 Elsevier Ltd
date: 2017
publisher: Elsevier Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977584116&doi=10.1016%2fj.jwpe.2016.06.005&partnerID=40&md5=8b0e827996cbfc27f19748c2030d5491
id_number: 10.1016/j.jwpe.2016.06.005
full_text_status: none
publication: Journal of Water Process Engineering
volume: 15
pagerange: 49-54
refereed: TRUE
issn: 22147144
citation:   Vakili, M. and Rafatullah, M. and Ibrahim, M.H. and Abdullah, A.Z. and Gholami, Z. and Salamatinia, B.  (2017) Enhancing reactive blue 4 adsorption through chemical modification of chitosan with hexadecylamine and 3-aminopropyl triethoxysilane.  Journal of Water Process Engineering, 15.  pp. 49-54.  ISSN 22147144