Research Sources for the Bioextrusion ProcessThe Bioextruder can create totally new feedstock options such as straw and desiccated grasses, or increase the biogas yield of traditional substrates such as maize or grass silage.
Depending on the solution required Rika Biogas Technologies can also specify equipment that can increase yields, speed up digestion and remove extraneous materials. These items normally sit in line with the extruder to produce a fully integrated feeding and feedstock processing solution that ultimately reduces your running costs. www.bioextruder.co.uk
Bioextrusion was Originated by LEHMANNThe Process of "Bioextrusion research and development was begun by LEHMANN®"
[Bioextrusion] leads to the formation of new bacteria stains and an improved C/N-ratio, because celluloses and hemicelluloses is decomposed and liberated from the embedding lignin layer. The 5- and 6-times sugar is faster available. Low-molecular and fast transforming substances like alcohol and other compounds develop.
The Fraunhofer institute IKTS in Dresden and LEHMANN Maschinenbau GmbH Jocketa have investigated to to what extent these difficult substrates are suitable for biogas production. via www.lehmann-maschinenbau.de
New insights into the impact of bioextrusion on biomass deconstruction using carbohydrate-binding modulesLignocellulosic biomass is a sustainable source of renewable substrate to produce low carbon footprint energy and materials. Biomass conversion is usually performed in two steps: a biomass pretreatment for improving cellulose accessibility followed by enzymatic hydrolysis of cellulose. In this study we investigated the efficiency of a bioextrusion pretreatment (extrusion in the presence of cellulase enzyme) for production of reducing sugars from corn crop agricultural residues. Our results demonstrate that bioextrusion increased the reducing sugar conversion yield by at least 94% at high solid/liquid ratio (14%–40%). via www.sciencedirect.com
During the process the substrate is decomposed into its cell structure by a double-screw extruder with pressure with that high temperature and resulting of alternating load and multiple pressure/relaxation cycles in the machine. The biogas yield increases due to a better biochemical-availability and a strong enhanced surface area. The fiber is ideal culture medium of metabolizing bacteria.
The sustainability and efficiency of biogas production is primarily determined by the substrate costs. It is necessary to exploit new substrates and to increase the energetic utilization ratio of the used substrates. Till now, highly lignocellulosic substrates or residues like straw or landscaping residue materials as "not or limited usable for biogas production".
The raw fibre is also degradable by bioextrusion. via www.energy-xprt.com
A Solution to Low Straw Biogas Yields
Also see the article about Straw as Feedstock for Biogas on our companion website here.