Experimental study to optimise the treatment efficacy of pharmaceutical effluents by combining electron beam irradiation with conventional techniques

TL;DR

This study explores combining electron beam irradiation with conventional treatment methods to enhance pharmaceutical wastewater purification, achieving up to 65% reduction in chemical oxygen demand.

Contribution

It demonstrates that combining electron beam irradiation with conventional techniques significantly improves pharmaceutical effluent treatment efficiency.

Findings

Maximum COD reduction of around 65% achieved.

Combining EB with coagulation enhances degradation of contaminants.

Varying doses of EB irradiation influence treatment effectiveness.

Abstract

The inability of conventional methods to completely remove the contaminants from pharmaceutical effluents led us to study the effect of Electron Beam (EB) irradiation on real pharmaceutical wastewater. In this paper, the samples from different stages of existing treatment facilities of industry are irradiated with varying doses from 25 to 200 kGy. The study aimed to find a suitable combination of EB and conventional treatments for efficient degradation of complex pharmaceutical effluent. It has been successfully demonstrated that electron beam irradiation when combined with conventional techniques like coagulation before or after the irradiation improves the efficiency of the process, resulting in lower Chemical Oxygen Demand (COD). In this investigation, the maximum COD reduction was found to be around 65 percent.