Recovery and Reuse of Valuable Chemicals Derived from Hydrothermal Carbonization Process Liquid

Recovery and reuse of valuable chemicals from hydrothermal carbonization process liquid (HTC-PL) tomato plant biomass (TPB) was conducted. Different HTC-PLs were characterized with FTIR Py-GC-MS analyses revealing the presence low molecular weight linear, cyclic, aromatics compounds in HTC-PL. Separation these by fractional distillation resulted eutectic constrains. Solvent extraction separation followed solvent recovery provided encouraging results. The non-polar portion extracted using n-hexane (C6H14), diethyl ether (C2H5)2O solvents 8.5 4.3% recoveries, respectively. Characterization revealed petrol fuel like materials extracts C6H14 (C2H5)2O, irrespective higher boiling components. Blends both flame tested good burning characteristics minimal smoke residue. Bench scale spirit lamp tests showed blend would be very useful for greenhouse winter heating. polar methylene chloride (CH2Cl2) about 55% recovery. analysis acetic acid 5-Hydroxymethyl furfural (5HMF) majors extract along related derivatives. 5HMF is a valued chemical demonstrated to building block many industrial applications, flatform various synthesis. Other identified minor components HTC-PL vanillin, divinyl terephthalate, syringol. After extractions three steps, residue applied as nutrient source after maintaining pH (5.6) concentration (TOC, 100–200 mg/L) typical plants. Plant growth encouraging. paper discusses all potential applications greenhouses without discharges, which contributes environmental protection economic benefits.