Diallyl dimethyl ammonium chloride (DADMAC) and acrylic acid (AAc) embedded nonwoven irradiated polyethylene fabric as efficient adsorbent to separate U(VI) from aqueous solution

Authors : Shahnaz SULTANA, Nazia RAHMAN, Md RAZZAK, Md Nabul SARDAR

Pages : 21-34

Doi:10.35208/ert.1188385

View : 13 | Download : 9

Publication Date : 2023-03-31

Article Type : Research Paper

Abstract :Selective isolation of uranium insert ignore into journalissuearticles values(VI); from wastewater is now a subject of concern due to its damaging effect on living beings. In this study, the pre-irradiation technique was used to prepare grafted polymeric adsorbent by diallyl dimethyl ammonium chloride insert ignore into journalissuearticles values(DADMAC); and acrylic acid insert ignore into journalissuearticles values(AAc); onto nonwoven polyethylene fabric insert ignore into journalissuearticles values(PE); and the grafted adsorbent was applied for uranium insert ignore into journalissuearticles values(VI); adsorption from aqueous solution by batch method. After irradiation of the non-woven polyethylene fabrics with 50 kGy radiation dose, the grafting reaction was carried out at 80 ºC with a monomer solution consisting of 20 g DADMAC and 20 g AAc to 110 mL deionized water. The prepared adsorbent was characterized by Fourier Transform Infrared insert ignore into journalissuearticles values(FTIR);, Scanning Electron Microscopy insert ignore into journalissuearticles values(SEM);, and Thermo-gravimetric Analysis insert ignore into journalissuearticles values(TGA);. After treatment with NaOH solution, the adsorption study was analyzed by pH, initial metal ion concentrations, contact time, and temperature on the adsorption of Uinsert ignore into journalissuearticles values(VI);. The highest graft yield was achieved at 598%. The maximum adsorption capacity achieved at 160 mg/g was found by treating with 0.1M NaOH for 4 minutes with an initial concentration of 1000 ppm, pH 3.3, and a contact time of 48 hours at room temperature insert ignore into journalissuearticles values(25 °C);. Kinetic adsorption data fitted better with the pseudo-second-order equation and a good correlation of experimental data with the Langmuir isotherm model suggested monolayer adsorption. Langmuir equation showed that the maximum adsorption capacity for Uinsert ignore into journalissuearticles values(VI); was 333.333 mg/g. The study depicted good results on the desorption and reuse of the adsorbent.
Keywords : Adsorption capacity, grafted polymeric adsorbent, uranium, wastewater