Jung, Kyung-Won Jeong, Tae-Un Choi, Jae-Woo Ahn, Kyu-Hong Lee, Sang-Hyup 2024-01-20T00:04:09Z 2024-01-20T00:04:09Z 2021-09-03 2017-11 0960-8524 https://pubs.kist.re.kr/handle/201004/122108 Batch and continuous fixed-bed column studies were investigated using electrochemically modified biochar calcium-alginate beads (EMB-CABs) as an adsorbent for the removal of phosphate from aqueous solutions. Batch experiments revealed that the phosphate adsorption behavior of EMB-CABs and its structural characteristics were highly dependent on pH condition. Also, kinetics and equilibrium isotherms studies demonstrated that the experimental data correlated well with the pseudo-second-order and Sips isotherm models, respectively. The effects of different operating parameters such as bed height, initial phosphate concentration, and flow rate were investigated in a continuous fixed-bed column, and the experimental data were fitted to three different breakthrough models, the Adams-Bohart, Thomas, and Yoon-Nelson models. The results suggested that the Yoon-Nelson model showed better agreement with the breakthrough curves than other models. Lastly, the design parameters for a large-scale column were calculated via the scale-up approach using the breakthrough parameters obtained from lab-scale column tests. English ELSEVIER SCI LTD Adsorption of phosphate from aqueous solution using electrochemically modified biochar calcium-alginate beads: Batch and fixed-bed column performance Article 10.1016/j.biortech.2017.07.133 1 BIORESOURCE TECHNOLOGY, v.244, pp.23 - 32 BIORESOURCE TECHNOLOGY 244 23 32 N scie scopus 000410545300004 2-s2.0-85026508130 Agricultural Engineering Biotechnology & Applied Microbiology Energy & Fuels Agriculture Biotechnology & Applied Microbiology Energy & Fuels Article ACTIVATED CARBON METHYLENE-BLUE ELECTRO-MODIFICATION MESOPOROUS CARBON MAGNETIC BIOCHAR LOADED BIOCHAR ANIONIC DYES WASTE-WATER REMOVAL RECOVERY Phosphate Calcium-alginate beads Fixed-bed column Breakthrough curve Yoon-Nelson model