Pollution Research Paper

Vol 37, Issue 4, 2018; Page No.(1117-1121)

EXTRACTION OF CHEMICALS FROM BIOCRUDE PRODUCED BY HYDROTHERMAL LIQUEFACTION OF WET BIOWASTES

R. DIVYABHARATHI, P. SUBRAMANIAN, S. PUGALENDHI1, S. AVUDAINAYAGAM AND D. MANOHAR JESUDAS

Abstract

Hydrothermal liquefaction (HTL) process treat wet biowastes directly for energy production, thereby saving drying costs and energy compared to conventional thermochemical processes. HTL produces an energy rich liquid biofuel called biocrude which can substitute fossil fuels. The aim of this study was to separate chemicals from biocrude obtained from the hydrothermal liquefaction of wet biowastes. The biocrude was obtained by HTL of orange peel in a high pressure stainless steel reactor of 5 litres capacity maintained at 250°C, 15 MPa and 30 min reaction time. The biocrude was analyzed by Gas chromatography and Mass spectrometry (GC-MS) technique which showed the presence of more than 100 compounds in which major portion being the phenolics, esters and acids. These major compounds were separated by solvent extraction and liquid-liquid extraction processes respectively, to separate phenol, acids and esters from biocrude. The chemical extracts were analyzed in GC-MS to confirm the recovery of chemicals.

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