期刊
JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE
卷 14, 期 1, 页码 305-313出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/16583655.2020.1736767
关键词
Coconut shell; sulphuric acid; chemical activation; methylene blue dye; adsorption mechanism
资金
- Universiti Teknologi MARA, Institute of Research Management and Innovation (Institut Pengurusan Penyelidikan Inovasi) [600-IRMI 5/3/LESTARI (037/2019)]
Coconut (Cocos nucifera) shell was chemically treated with sulfuric acid (H2SO4) to produce acid- factionalized biosorbent for methylene blue (MB) dye removal from aqueous environment. Various analytical techniques were utilized to investigate the surface area, surface morphology, crystallinity, elemental composition, and functional group of the sulfuric acid-treated coconut shell (SATCS). The adsorption parameters such as adsorbent dosage (0.02-0.20 g), solution pH (3-10), contact time (0-360 min), and initial MB dye concentration (25-200 mg/L) were studied. The adsorption results were illustrated by pseudo-second order kinetic and Freundlich isotherm models. It was found that SATCS has a maximum adsorption capacity (q(max)) of 50.6 mg/g at 303 K. The adsorption mechanism of MB dye on the SATCS surface can be assigned to the various types of interactions such as electrostatic attractions, H-bonding interaction, and pi-pi interaction. This work shows SATCS as promising acid- factionalized biosorbent for removal MB dye.
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