Parkia speciosa (Petai) pod as a potential low-cost adsorbent for the removal of toxic crystal violet dye

Autor:	Hui Hsin Cheng, Namal Priyantha, Nur Afiqah Hazirah, Linda B.L. Lim
Rok vydání:	2016
Předmět:	Langmuir Parkia speciosa biology Chemistry Diffusion General Medicine biology.organism_classification chemistry.chemical_compound Adsorption Point of delivery Ionic strength Freundlich equation Crystal violet Nuclear chemistry
Zdroj:	Scientia Bruneiana. 15
ISSN:	2519-9498 1819-9550
DOI:	10.46537/scibru.v15i0.26
Popis:	This study focused on the use of Parkia speciosa (Petai) pod as a potential adsorbent for the removal of crystal violet (CV) dye. Batch adsorption isotherm experiments carried out under optimized conditions were fitted to six isotherm models, namely Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, Redlich-Peterson and Sips. Of these, the Sips model best described the adsorption isotherm of Petai pod for the removal of CV dye, giving a desirable adsorption capacity (qmax) of 163.2 mg g-1. Adsorption kinetics was found to follow the pseudo-second order, and further, intra-particle diffusion played a significant role. This study also revealed that the adsorption of CV by Petai pod is influenced by the ionic strength of the medium. However, Petai pod showed resilience towards changes in medium pH.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::74c85fe2786c43a8f120c09f30b5ac98 https://doi.org/10.46537/scibru.v15i0.26 Zobrazit plný text záznamu