Equilibrium kinetic and isotherm studies of dye colour adsorption on the banana peel
Author(s) -
Azinoor Azida Abu Bakar,
W N R Wan Mazlan,
I H Izaham,
N S Azizan,
Khairul Ammar Muhammad Ali,
Nurhidayati Mat Daud
Publication year - 2021
Publication title -
iop conference series earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/920/1/012029
Subject(s) - adsorption , freundlich equation , methylene blue , wastewater , effluent , chemistry , pulp and paper industry , banana peel , chromatography , nuclear chemistry , chemical engineering , materials science , organic chemistry , environmental science , environmental engineering , photocatalysis , engineering , catalysis , biochemistry
Textile, paper, rubber, plastics, leather, cosmetics, pharmaceuticals, and food industries extensively employ dyes. This study aims to determine the best equilibrium kinetic and isotherm model of dye colour adsorption using waste adsorbent. Methylene blue (MB) is a dye colour contaminant that can be removed from wastewater via adsorption due to its ease of usage and cost-effectiveness. This study employed banana peels (BPs), a low-cost and waste adsorbent, to remove MB from synthetic wastewater. A series of batch equilibrium adsorption studies investigated the effect of different dosages of 0.05 to 0.4 grams, contact time of 15 to 150 minutes, and agitation speed of 150 rpm. BPs dosage is added from 0.05 g to 0.4 g in 100 ml of Methylene Blue solution. The concentration of MB in the samples was determined using a HACH DR2800 Spectrometer. According to the kinetic study analysis, the adsorption of MB followed a pseudo-second order kinetic with an R 2 of 0.9934. Furthermore, the Freundlich model fit better than others based on the equilibrium isotherm investigation, with an R 2 of 0.7688. As a result, BPs can be used as an alternative waste adsorbent media for extracting dye colours from industrial effluent.
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