Ftir Analysis of Modified Biochar Produced From the Plum Stone Biowaste

Fruit processing generates huge amounts of waste biomass, which can serve as potential renewable resource for many value-added products. Unfortunately, these reserves are often dumped or incinerated inducing environmental and health risk issues. Thermochemical conversions might transform this waste into a variety of carbon rich products (e.g. biochar). In the same time, tremendous efforts in phosphate release control are done in order to minimize ecosystems eutrophication. In this paper, waste plum stones (PS) were converted into the biochar (PS-B) by slow pyrolysis. Before pyrolysis, PS samples were modified by magnesium salt in order to increase its capacity toward phosphates. The characteristic functional groups of the PS, Mg-modified and phosphate-enriched samples were investigated using FTIR analysis. These analyses confirmed significant aromaticity increase, existence of periclase at modified PS-B surface and additional present of groups related to successful phosphate binding.