Hydrothermal liquefaction process of Ammi visnaga and a new approach for recycling of the waste process water: cultivation of algae and fungi

Abstract

In this study, biomass was tried to be liquefied by catalytic hydrothermal process. In addition, the effects of waste process water on growth of beneficial-pathogenic fungi and algae were investigated. Ammi visnaga as biomass source; Cu, W, and Fe metal powders as catalysts; Trichoderma harzianum, Trichoderma vixens, and Verticillium dahliae as fungus species; and Chlorella minutissima as algae were used. In trials, 250, 275, 300, and 325 degrees C temperatures and 0, 15, 30, and 45 min parameters were determined. GC-MS, TOC, XRD, and elemental analysis methods were used for characterization. The optimum temperatures for light bio-oil and heavy bio-oil were 300 degrees C and 325 degrees C, respectively. The highest HHV value was obtained as 30.30 Mj/kg in the presence of Fe catalyst. It was determined that waste process waters support beneficial fungus and algae growth and suppress pathogen growth.