'Waste' coir pith - a potential biomass for the treatment of dyeing wastewaters

Citation
C. Namasivayam et al., 'Waste' coir pith - a potential biomass for the treatment of dyeing wastewaters, BIO BIOENER, 21(6), 2001, pp. 477-483
Citations number
28
Categorie Soggetti
Biotecnology & Applied Microbiology
Journal title
BIOMASS & BIOENERGY
ISSN journal
09619534 → ACNP
Volume
21
Issue
6
Year of publication
2001
Pages
477 - 483
Database
ISI
SICI code
0961-9534(2001)21:6<477:'CP-AP>2.0.ZU;2-D
Abstract
Removal of acid dyes (acid violet and acid brilliant blue) and basic dyes ( rhodamine B and methylene blue) was carried out using 'waste' coir pith as adsorbent. Parameters like agitation time, adsorbent dosage and pH effect w ere studied. Adsorption followed the first-order rate expression. The equil ibrium data fit well with both Langmuir and Freundlich models of adsorption . Desorption experiments confirmed that major mode of adsorption is ion-exc hange for the dyes acid brilliant blue and methylene blue whereas acid viol et showed mainly physical adsorption. Chemisorption seems to be the major m ode of adsorption for rhodamine B. (C) 2001 Elsevier Science Ltd. All right s reserved.