An, Byungryul Jung, Ka-Young Lee, Sang-Hyup Lee, Seunghak Choi, Jae-Woo 2024-01-20T09:30:28Z 2024-01-20T09:30:28Z 2021-09-04 2014-08 0049-6979 https://pubs.kist.re.kr/handle/201004/126565 To remove phosphate from solution, a new class of sorbent based on chitosan bead (CB) was prepared using copper ion (Cu(II)) with/without a traditional crosslinking agent (glutaraldehyde [GLA]); these materials are referred to as CB-G-Cu and CB-Cu, respectively. Copper ions play a key role in the CB synthesis; these species crosslink each polymer chain, and during phosphate removal, they are the active functional group. Overall, 2.5 % (w/w) of chitosan is necessary to maintain the physical properties of the bead. In the FTIR spectra, adding GLA decreased the intensity of the amino group in chitosan, lowering the amount of copper in the CB. The maximum phosphate uptake (Q) for CB-Cu was 53.6 mg g(-1) when calculated with the Langmuir isotherm, and the phosphate equilibrium was achieved in 12 h. Although the solution pH was not strongly affected, values below 7 are optimal for phosphate removal. The CB-Cu can be feasibly applied during a fixed column test, revealing that the phosphate breakthrough was 1.5 times higher than with CB-G-Cu. English Kluwer Academic Publishers Effective Phosphate Removal from Synthesized Wastewater Using Copper-Chitosan Bead: Batch and Fixed-Bed Column Studies Article 10.1007/s11270-014-2050-6 1 Water, Air, & Soil Pollution, v.225, no.8 Water, Air, & Soil Pollution 225 8 N scie scopus 000340527400018 2-s2.0-84923017838 Environmental Sciences Meteorology & Atmospheric Sciences Water Resources Environmental Sciences & Ecology Meteorology & Atmospheric Sciences Water Resources Article CROSS-LINKING GEL BEADS ADSORPTION SORPTION SEPARATION GOETHITE CHITIN IONS Phosphate removal Chitosan bead Crosslinking agent Competing ion