Reduction of physico-chemical properties and chromium concentrations in groundwater using onion peel adsorbent

Among the several sources of chromium pollution in groundwater, the most significant source is the effluents produced by tannery operations. The vast majority of the sub-urban communities rely on ground water as their primary source of providing drinking water. Being exposed to chromium for an extended period of time is harmful to human beings. With careful attention given to the optimization of costs, the prime objective of this study is to measure groundwater pollution, as well as to adopt relevant procedures and to create suitable ways for either preventing chromium contamination or reducing it to extremely low levels. Five different sites were chosen to gather bore well samples, which were then analyzed for seven different essential criteria. Onion peel is utilized as the adsorbent material for the extraction of chromium from groundwater. A column study was conducted to assess the efficiency of the adsorbent in eliminating chromium from groundwater. This study aims to assess the impact of bed height on the efficiency of chromium adsorption using onion peels in a fixed bed column. An astonishing 89% of the chromium at a depth of 9 cm adsorbent that was present in the groundwater samples was successfully removed by the use of a fixed bed column that included onion peel as an adsorbent, as shown by the findings. Additionally, it was determined that the impact of various parameters such as chromium concentration, agitation time, pH and adsorbent dosage. The outcome showed that the water that was treated using this procedure was fit for human consumption.