Hydrochar and Humic Acid as Template of ZnAl Layered Double Hydroxide for Adsorption of Phenol

The adsorbents potential ZnAl-LDH, ZnAl-Hydrochar, and ZnAl-Humic acid were prepared using the coprecipitation method. characterization by XRD, FTIR, BET analysis. XRD peaks of ZnAl-LDH at 10.29°, 20.07°, 29.59°, 32.12°, 34.02°, 48.06°, 60.16°. FTIR absorption peak was observed 3400-3500 cm−1, 1600-1700 1381 1000 500-700 cm−1. All exhibited N2 adsorption-desorption isotherms type IV classified as a mesoporous structure (pore size= 2-50 nm). surface areas composites higher than LDH following order: ZnAl-Hydrochar > ZnAl-LDH. kinetic parameter showed pseudo-second-order kinetics model. maximum adsorption capacity 48.077 mg/g, 90.090 94.340 respectively; with Freundlich isotherm Reusability after 5 times in range 49.81-0.890%, 95.92-9.84%, 70.02-5.72%, respectively. adsorbent can be used up to 3 times.