Macroporous Cu-MOF@cellulose acetate membrane serviceable in selective removal of dimethoate pesticide from wastewater

The current study focused on adsorption of dimethoate by using highly adsorptive porous membrane based on metal organic [email protected] acetate ([email protected]). The porous [email protected] membrane was prepared in two steps; formation of porous CA membrane and secondly, Cu-BTC was in-situ synthesized within the porous CA membrane. The preparation was performed to incorporate different ratios of Cu-BTC (20–60%) within the CA membrane to study their efficiency in the adsorption of dimethoate. Micro-crystals Cu-BTC was successfully immobilized in the macroporous CA membrane with pore diameter of 112.6–496.0 nm. The BET surface area was significantly increased from 78.4 m2/g for CA membrane to 965.8 m2/g for 40% [email protected] membrane. Adsorption of dimethoate upon the synthesized membrane was fitted well to Langmuir isotherm and pseudo-second order model. The adsorption capacity was observably enhanced from 207.8 mg/g for CA membrane to 282.3–321.9 mg/g for [email protected] membrane. Incorporation of 40% Cu-BTC resulted in acceleration of the dimethoate adsorption by factor of 2.1. The applied membrane showed quite good recyclability and the adsorption efficiency was reduced by 22.5% after 5 recycles. The synthesized [email protected] membrane could be promisingly applied in the effective removal of pesticides with sufficient recoverability, and in general environmental purposes.