Feasibility study of manganese separation from industrial wastewater by surface absorption method with graphene adsorbent from industrial wastewater

The issue of water supply is the most important side service of every industrial unit, which turns into industrial wastewater during various uses, it is important to obtain industrial wastewater recovery methods. In the present study, manganese removal experiments by graphene adsorbent were carried out continuously in different conditions. Then the effect of effective parameters on manganese absorption such as pH (from acidic environment 2 to basic environment 12), contact time (from 5 to 30 minutes), initial concentration 20ppm and amount of adsorbent used (0.02 gr, 0.04 gr, 0.06 gr, 0.08 gr and 0.1 gr) ) was investigated. An atomic absorption device was used to measure the amount of manganese in the solution. The results showed that the optimum playing medium for the adsorbent was equal to 10. In the study of the effect of adsorbent heat on the absorption percentage, it was observed that the nanographene used has an extremely high absorption power in removing pollutants. The results showed that the process of removing manganese from the aqueous solution follows the pseudo-quadratic equation with very high accuracy. The maximum removal of manganese from the aqueous solution was 2ppm by 0.08gr of nanographene in 10 alkaline environment and 30 minutes contact time, and the absorption percentage was 99.05%.Graphene has a very good performance in removing manganese metal from wastewater. In fact, the larger the size of the absorbent surface and pores, the higher the absorption rate.