title: Electricity generation from rapeseed straw hydrolysates using microbial fuel cells.
abstract: Rapeseed straw is an attractive fuel material for microbial fuel cells (MFCs) due to its high content of carbohydrates (more than 60% carbohydrates). This study has demonstrated that reducing sugars can be efficiently extracted from raw rapeseed straw by combination of hydrothermal pretreatment and enzymatic hydrolysis followed by utilization as a fuel in two-chamber MFCs for electrical power generation. The most efficient method of saccharification of this lignocellulosic biomass (17%) turned out hydrothermal pretreatment followed by enzymatic hydrolysis. Electricity was produced using hydrolysate concentrations up to 150 mg/dm(3). The power density reached 54 mW/m(2), while CEs ranged from 60% to 10%, corresponding to the initial reducing sugar concentrations of 10-150 mg/dm(3). The COD degradation rates based on charge calculation increased from 0.445 g COD/m(2)/d for the hydrolysate obtained with the microwave treatment to 0.602 g COD/m(2)/d for the most efficient combination of hydrothermal treatment followed by enzymatic hydrolysis.
authors.affiliation: Gdansk University of Technology, Narutowicza Str. 11/12, 80-233 Gdansk, Poland.
authors.forename: Milena A
authors.initials: MA
authors.lastname: Jablonska
authors.affiliation: Gdansk University of Technology, Narutowicza Str. 11/12, 80-233 Gdansk, Poland.
authors.forename: Maria K
authors.initials: MK
authors.lastname: Rybarczyk
authors.affiliation: Gdansk University of Technology, Narutowicza Str. 11/12, 80-233 Gdansk, Poland.
authors.forename: Marek
authors.initials: M
authors.lastname: Lieder
mesh_terms: D001674:Bioelectric Energy Sources; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D029741:Brassica rapa / Q000737:chemistry*; D002241:Carbohydrates / Q000737:chemistry; D006868:Hydrolysis
chemical_list: D002241:Carbohydrates
keywords: Biomass; Microbial fuel cell; Rapeseed straw hydrolysates