Premium
The Removal of Reactive Black 5 from Aqueous Solutions by Cotton Seed Shell
Author(s) -
Uçar Deniz,
Armağan Bülent
Publication year - 2012
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143012x13280358613624
Subject(s) - adsorption , freundlich equation , aqueous solution , langmuir , chemistry , diffusion , langmuir adsorption model , gossypium hirsutum , chromatography , chemical engineering , nuclear chemistry , thermodynamics , organic chemistry , botany , physics , engineering , biology
This study investigated the removal of Reactive Black 5 (RB5) textile dye from aqueous solutions using cotton ( Gossypium hirsutum ) seed shell (CSS) as low cost adsorbents. The data were described according to the Freundlich and Langmuir isotherm models. Of these, the Langmuir model provided the best fit for the experimental data. The highest measured adsorption density was 12.19 mg/g at pH 2. An equilibrium adsorption rate of RB5 by CSS ( q e = 11.879 mg/g) was observed at 30 minutes. In order to evaluate the adsorption kinetic mechanisms, pseudo first and second order rate kinetic models and an intraparticle diffusion model were applied, with the pseudo second order model providing an excellent fit for the data.