20.500.12556/RUL-146117 Synthesis of bio-based materials from agricultural residues for treatment of petrochemical wastewater 4-Carboxybenzaldehyde (4-CBA), a major component of purified terephthalic acid wastewater, is toxic to living organisms and required to be removed before the discharge of treated wastewater in a natural water body. In this work, the adsorptive removal of 4-CBA was studied using bagasse fly ash (BFA), a waste product from the sugar industry. The adsorption capacity of BFA was compared with the commercially available adsorbent, granular activated carbon (GAC). A 4-factorial, 5-stage central composite design (CCD) was used to optimize 4-CBA removal and adsorption uptake by BFA using response surface methodology (RSM). The variables considered for the study were pH, adsorbent dose (m), initial concentration (C$_o$) and time (t). At the optimum treatment conditions of pH = 4, m = 9 g/L, C$_o$ = 100 mg/L and t = 7.5 h, the removal efficiency and adsorption uptake of 4-CBA on BFA were found to be 79% and 9.9 mg/g, respectively. BET surface area of BFA was determined to be 284 m$^2$/g. A kinetic study was performed using a first- and second pseudo-order model. The adsorption equilibrium data were fitted for various adsorption models. A positive value ΔH$^0$ indicates that the adsorption process is endothermic. This study indicated that BFA is a cost-effective adsorbent for the removal of 4-CBA with high adsorption capacity and fast kinetics. 4-carboxybenzaldehyde central composite design bagasse fly ash adsorption 4-karboksibenzaldehid centralna kompozitna zasnova adsorpcija materiali odpadne vode true false true Angleški jezik Slovenski jezik Članek v reviji 2023-05-19 13:34:38 2023-05-19 13:34:40 2023-10-27 04:02:10 0000-00-00 00:00:00 2023 0 0 Str. 2287–2303 iss. 7 Vol. 25 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.1:628.3 1618-954X 10.1007/s10098-023-02504-4 148651779 s10098-023-02504-4.pdf s10098-023-02504-4.pdf 1 C08351CE173F9A54FC44C25A7B4C5A2B 15a5988aeae8e1fd851dc4b014e26718ee55fa816c3f53c12687e2930ebe20dd aa0ab78e-73e0-11ee-a653-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=177142 https://link.springer.com/article/10.1007/s10098-023-02504-4 0 e97c3ae1-73e0-11ee-a653-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=177143 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0