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A Novel Biosorbent Lagenaria vulgaris Shell ‐ ZrO 2 for the Removal of Textile Dye From Water
Author(s) -
Petrović Milica M.,
Radović Miljana D.,
Kostić Miloš M.,
Mitrović Jelena Z.,
Bojić Danijela V.,
Zarubica Aleksandra R.,
Bojić Aleksandar Lj.
Publication year - 2015
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143015x14212658614838
Subject(s) - aqueous solution , biosorption , nuclear chemistry , sorption , lagenaria , fourier transform infrared spectroscopy , chemistry , adsorption , langmuir adsorption model , point of zero charge , materials science , chemical engineering , organic chemistry , engineering , biology , ecology
A new biosorbent, abbreviated as LVB‐ZrO 2 , was synthesized by chemically modifying Lagenaria vulgaris shell with ZrO 2 . The removal of textile dye RB19 from aqueous solution by LVB‐ZrO 2 was studied. Characterization by SEM, FTIR and XRD confirmed the chemical modification of the biomaterial, which showed significant improvement of removal efficiency compared with unmodified Lagenaria vulgaris shell. LVB‐ZrO 2 point of zero charge is 5.49. The biosorption process is highly pH dependent and the optimal pH is 2.0, at which complete dye removal was attained. The results are the best by a pseudo‐second order kinetic model. The optimal adsorbent dosage is 4 mg/dm 3 .The RB19 biosorption follows the Langmuir isotherm model ( R 2 =0.9978), with the maximum sorption capacity of 75.12 mg/g. LVB‐ZrO 2 is a mechanically stable, easy to synthesize, cost‐effective, biocompatible and environmentally‐friendly biosorbent with the high potential for the removal of RB19 from aqueous solution.