Preconcentration and Immobilization of Phosphate from Aqueous Solutions in Environmental Cleanup by a New Bio-based Anion Exchanger

A new biosorbent for phosphate uptake based on functionalized bottle gourd Lagenaria vulgaris shell (LVS) was synthesized and characterized. The functionalization was achieved through the quaternization of the lignocellulosic LVS biomass with trimethylamine. The quaternary ammonium product (QALVS),...

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Bibliographic Details
Published in:Waste and biomass valorization 2020-04, Vol.11 (4), p.1373-1384
Main Authors: Marković-Nikolić, Dragana, Bojić, Aleksandar, Bojić, Danijela, Cvetković, Dragan, Cakić, Milorad, Nikolić, Goran S.
Format: Article
Language:English
Subjects:
Ammonium
Anion exchanging
Anions
Aqueous solutions
Biosorption
Engineering
Environment
Environmental cleanup
Environmental Engineering/Biotechnology
Immobilization
Industrial Pollution Prevention
Ion exchange
Lignocellulose
Original Paper
pH effects
Phosphate
Phosphates
Renewable and Green Energy
Sulfates
Trimethylamine
Waste Management/Waste Technology
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Summary:A new biosorbent for phosphate uptake based on functionalized bottle gourd Lagenaria vulgaris shell (LVS) was synthesized and characterized. The functionalization was achieved through the quaternization of the lignocellulosic LVS biomass with trimethylamine. The quaternary ammonium product (QALVS), containing trimethylammonium-hydroxypropyl weak base groups, was tested to remove phosphate from single and multi anion aqueous systems. The elemental and FTIR analyzes clearly indicate the existence of a cationic –N + (CH 3 ) 3 group on the biosorbent surface, which is responsible for the phosphate biosorption. The biosorption behavior of QALVS towards phosphate was estimated by using different experimental approaches, such as biosorbent dosage (0.5–5.0 g dm −3 ), initial phosphate concentration (5–100 mg dm −3 ), contact time (5–60 min), pH value (2–10), temperature (20–50 °C), and potential interferences of coexisting anions (nitrate, sulfate and chloride). The phosphate biosorption by QALVS was found to be spontaneous and exothermic, ion exchange process, revealing an exchange capacity of 1.12 meq g −1 at 20 °C and pH 6. The biosorbent displayed potential application for the preconcentration and immobilization of phosphate from aqueous solutions in environmental cleanup.
ISSN:1877-2641
1877-265X
DOI:10.1007/s12649-018-0401-z