Enhancing atrazine biodegradation by Pseudomonas sp. strain ADP adsorption to Layered Double Hydroxide bionanocomposites

► Effect of Pseudomonas sp. strain ADP adsorption by LDH and humic acid modified LDH on atrazine biodegradation was demonstrated. ► Cell adsorption increases with LDH anion exchange capacity and decreases with humic substances loading at LDH surface. ► Adsorption of Pseudomonas sp. strain ADP cell occurs by a preferential and progressive coverage of the clay mineral surface. ► Direct interactions of LDH and bacteria have a strong boosting effect on the biodegradation kinetics.