Journal
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume 6, Issue 4, Pages 3889-3897Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2018.05.029
Keywords
Biowaste utilization; Dicarboxylated hemicellulose; Acetylated hemicellulose; Malachite green; Adsorption capacity; Reusability
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Utilization of biowaste is an interesting research area to develop new adsorbents. New hemicellulose-based materials were synthesized and further evaluated as malachite green (MG) dye adsorbents. Hemicellulose was extracted from Pinus wallichiana the needles, acetylated, oxidized and modified to carboxyl product. The well-characterized hemicellulose-based materials were applied to remove MG from wastewaters. The acetylated and dicarboxylated hemicellulosic material showed efficient dye adsorption with Langmuir adsorption capacity of 456.23 mg/g. The data was analyzed applying various kinetic and isotherm models, and experimental data closely matched pseudo-second order kinetic model and Freundlich isotherm. The adsorbent exhibited good reusability efficiency when studied up to 16 cycles and was still active for further use.
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