*3.2.3 Reducing water pollution*

Application of biochar in soil also helps in the reduction of offsite pollution. It helps in increasing the retention of nutrients like phosphorous and nitrogen in soils, aid in decreasing the leaching of nutrients of soil in to the groundwater. Thus, it plays major role in saving the nutrients from erosion and nutrients availability for the cultivation of crop increases. By the pyrolysis of animal manures, a significant amount of reduction can be achieved in the mobility of phosphorous of animal manures [36] and this technique will help in reducing the weight and volume of the manures and will make the disposing off of waste easier. It also helps in conversion of the soluble inorganic phosphate present in the manure into the adsorbed phosphate in biochar.
