Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/12197
ชื่อเรื่อง: Removal of Heavy Metal Ions Using Modified Celluloses Prepared from Pineapple Leaf Fiber
ผู้แต่ง: Daochalermwong A.
Chanka N.
Songsrirote K.
Dittanet P.
Niamnuy C.
Seubsai A.
Keywords: Adsorption
Cells
Cellulose
Chlorine compounds
Cytology
Efficiency
Heavy metals
Metal ions
Adsorption efficiency
Adsorption measurement
Adsorption selectivity
Langmuir adsorption isotherms
Pineapple leaf fiber
Pseudo-second order model
Removal of heavy metal ions
Value added products
Ethylenediaminetetraacetic acid
วันที่เผยแพร่: 2020
บทคัดย่อ: Since large amounts of pineapple leaves are abandoned after harvest in agricultural areas, the possibility of developing value-added products from them is of interest. In this work, cellulose fiber was extracted from pineapple leaves and modified with ethylenediaminetetraacetic acid (EDTA) and carboxymethyl (CM) groups to produce Cell-EDTA and Cell-CM, respectively, which were then used as heavy metal ion adsorbents. A solution of either lead ion (Pb2+) or cadmium ion (Cd2+) was used as wastewater for the purpose of studying adsorption efficiencies. The adsorption efficiencies of Cell-EDTA and Cell-CM were significantly higher than those of the unmodified cellulose in the pH range 1-7. Maximum adsorptions toward Pb2+ and Cd2+ were, for Cell-EDTA, 41.2 and 33.2 mg g-1, respectively, and, for Cell-CM, 63.4 and 23.0 mg g-1, respectively. The adsorption behaviors of Cell-CM for Pb2+ and Cd2+ fitted well with a pseudo-first-order model, but those of Cell-EDTA for Pb2+ and Cd2+ fitted well with a pseudo-second-order model. All of the adsorption behaviors could be described using the Langmuir adsorption isotherm. Desorption studies of Pb2+ and Cd2+ on both adsorbents using 1 M HCl suggested that regenerability of Cell-EDTA was, for both adsorbates, better than that of Cell-CM. Moreover, adsorption measurements in a mixture of Pb2+ and Cd2+ at various ratios showed that for both adsorbents the adsorption of Pb2+ was higher than that of Cd2+, while the adsorption selectivity for Pb2+ of Cell-CM was greater than that of Cell-EDTA. This study showed that the modified cellulosic adsorbents made from pineapple leaves were able to efficiently adsorb metal ions. Copyright © 2020 American Chemical Society.
URI: https://ir.swu.ac.th/jspui/handle/123456789/12197
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85081645853&doi=10.1021%2facsomega.9b04326&partnerID=40&md5=d080f22f0b229dcf682d38799c85a068
ISSN: 19448244
Appears in Collections:Scopus 1983-2021

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