DEGRADAREA FERMENTATIVĂ A BIOMASEI LIGNOCELULOZICE PENTRU PRODUCEREA BIOGAZULUI: 1. Metode de preprocesare

Victor COVALIOV, Dumitru UNGUREANU*, Olga COVALIOVA, Ion IONEŢ* Universitatea de Stat din Moldova *Universitatea Tehnică din Moldova

Abstract

1. Pre-processing methods This study highlights the recent advances in the pretreatment of lignocellulosic wastes. Mechanical, physical and biological pretreatment systems are brought into perspective. Physicochemical and biological pretreatment systems seem to be the most favored options for lignocellulosic biomass before solid-state anaerobic digestion. Engineered microbes seem to tackle the problem of bioconversion of substrates that are otherwise non convertible by conventional wild strains. Future trends are being directed to nanobiotechnology and genetic engineering for improved processes and products. The paper presents state of the art review of the dual advantage of handling lignocellulosic biomass for cleaner environment and production of renewable bio-products. Keywords: lignocellulosic biomass (wastes), pretreatment systems, anaerobic digestion, biogas, hydolisis, methanogenesis.