“STUDIES OF THE KINETIC AND THERMODYNAMIC PARAMETERS OF LEVULINIC ACID IN THE CONVERSION TO ETHYL LEVULINATE VIA ESTERIFICATION CATALYSED BY SULFONATED FOOD WASTE CHAR” (2026) Jurnal Teknologi (Sciences & Engineering), 88(6), pp. 227–237. doi:10.11113/jurnalteknologi.v89.25102.