Efficient removal of Congo Red Dye from water using walnut shells activated carbon/MgO-Fe2O3 adsorbent
Effective Congo Red Dye removal from water sources using walnut shell activated carbon
DOI:
https://doi.org/10.55627/zoobotanica.002.02.0662Keywords:
Walnut shells, activated carbon, agricultural biomass, adsorption, MgO-Fe2O3, congo red dyeAbstract
In this study, the efficiency of walnut shells activated carbon modified with MgO and Fe2O3 was investigated for treatment of dyes contaminated water. Dyes are chemical molecules that are poisonous, long-lasting, and difficult to decompose. Congo red, an anionic dye with a complicated molecular structure containing different diazo aromatic groups, is widely utilized in the textile industry. There are multiple methods available to treat dye-containing water such as nano-filtration, photo-degradation, coagulation, ozonation and others, however, the adsorption method is a compelling approach with multiple benefits including its versatility and wide range of feasibility. The use of biomass as adsorbents such as nutshells have tested as efficient material as compared to commercially available adsorbents in terms of cost and environmental impact. In the present study, the efficacy of WS based activated carbon modified with MgO-Fe2O3 was studied for the removal of Congo red dye from synthetic wastewater. The dye removal was optimized for various factors, including time, pH, dye concentration, temperature, and catalyst dose. It was found that the highest adsorption was achieved within 120 min with WS-AC/MgO-Fe2O3 at a dose of 0.075 g/L. At dye concentration of 5 ppm, pH 6.0 and temperature 35 oC, the optimal conditions were met and about 100 % removal of Congo red dye was achieved. Overall, this study showed a remarkable potential of WS based AC modified with MgO-Fe2O3 for removal of Congo red dye from wastewater and can be used in future wastewater treatment plants.
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