A5049997717- Biofuel production and bioconversion
- Anaerobic Digestion and Biogas Production
- Microbial Metabolic Engineering and Bioproduction
- Enzyme Production and Characterization
- Carbon Dioxide Capture Technologies
- Microbial Fuel Cells and Bioremediation
- Microbial metabolism and enzyme function
- Gut microbiota and health
- Enzyme Catalysis and Immobilization
- Thermochemical Biomass Conversion Processes
- Transgenic Plants and Applications
- Water Quality Monitoring and Analysis
- Advanced Control Systems Design
- Advanced Statistical Process Monitoring
- Algal biology and biofuel production
- Protein Hydrolysis and Bioactive Peptides
Helmholtz Centre for Environmental Research
2019-2024
Karlsruhe Institute of Technology
2021-2022
Universidade Federal de São Carlos
2013-2016
Brazilian Agricultural Research Corporation
2013-2015
Electron donor scarcity is seen as one of the major issues limiting economic production medium-chain carboxylates from waste streams. Previous studies suggest that co-fermentation hydrogen in microbial communities realize chain elongation relieves this limitation. To better understand how co-feeding can support elongation, we enriched three different anaerobic reactors (A, B, and C with ascending levels diversity) for their ability to produce conventional electron donors (lactate or ethanol)...
Abstract Feeding microbial communities with both organic and inorganic substrates can improve sustainability feasibility of chain elongation processes. Sustainably produced H 2 , CO be co‐fed to microorganisms as a source for acetyl‐CoA, while small amount an ATP‐generating substrate helps overcome the kinetic hindrances associated autotrophic carboxylate production. Here, we operated two semi‐continuous bioreactor systems continuous recirculation co‐feeding model feedstock (lactate acetate)...
Bioprocess development studies concerning the production of cellulases are crucial importance due to significant impact these enzymes on economics biomass conversion into fuels and chemicals. This work evaluates effects solid-state fermentation (SSF) operational conditions cellulase by a novel strain Aspergillus oryzae using an instrumented lab-scale bioreactor equipped with on-line automated monitoring control system. The use SSF cultivation under controlled substantially improved...
Anaerobic fermentation with mixed cultures has gained momentum as a bioprocess for its promise to produce platform carboxylates from low-value biomass feedstocks. fermenters are net carbon emitters, and their carboxylate yields limited by electron donor availability. In new approach tackle these two disadvantages, we operated bioreactors at pH 6.0 32 °C fed acetate lactate model feedstock while recirculating H2/CO2 stimulate concomitant autotrophic activity. After 42 days of operation,...
Abstract Background Production of monocarboxylates using microbial communities is highly dependent on local and degradable biomass feedstocks. Syngas or different mixtures H 2 , CO, CO can be sourced from gasification, excess renewable electricity, industrial off-gases, carbon capture plants co-fed to a fermenter alleviate dependence biomass. To understand the effects adding these gases during anaerobic fermentation plant biomass, series batch experiments was carried out with syngas...
Mixed microbial cultures have become a preferred choice of biocatalyst for chain elongation systems due to their ability convert complex substrates into medium-chain carboxylates. However, the complexity effects process parameters on metabolic networks is drawback that makes task optimizing product selectivity challenging. Here, we studied small air contaminations community dynamics and formation in anaerobic bioreactors fed with lactate, acetate H 2 /CO . Two stirred tank reactors two...
The enzymatic hydrolysis of steam-exploded sugarcane bagasse (SESB) was investigated using extracts (EE) and whole fermentation media (WM), produced in-house, from Aspergillus niger 3T5B8 Trichoderma reesei Rut-C30 cultivated on wheat bran under solid-state (SSF). A detailed quantitative comparison the different conditions tested carried out Chrastil approach for modeling reactions by fitting experimental data total reducing sugar (TRS) released according to time. Conversion SESB A. complex...
The pyrolytic conversion of lignocellulosic biomass into fuels and chemicals is a promising option for the valorization agricultural forestry residues. However, technological developments are still needed to maximize product recovery carbon fixation pyrolysis process. aqueous condensate (PAC), by-product, has high water content highly toxic, hampering its use. anaerobic digestion PAC from different biomasses been proven viable technology detoxification, but toxicity limits methanogenic...
Hybrid thermochemical-biological processes have the potential to enhance carbon and energy recovery from organic waste. This work aimed assess of multifunctional simultaneously sequestrate syngas detoxify pyrolysis aqueous condensate (PAC) for short-chain carboxylates production. To evaluate relevant process parameters mixed culture co-fermentation PAC, two identical reactors were run under mesophilic (37 °C) thermophilic (55 conditions at increasing PAC loading rates. Both recovered least...
Pyrolysis of lignocellulosic biomass commonly produces syngas, a mixture gases such as CO, CO
<title>Abstract</title> To stay within the planetary boundaries circularizing economy by utilizing residues is key. Bioprocesses can leverage abundant, but recalcitrant biogenic residues, giving access to various value-added products. Accelerating circularization requires assessing feasibility of heterogeneous for different, yet specific bioprocesses. Exemplifying national level in Germany, we categorized compiled DE Biomass Monitor regarding biochemical composition and feedstock potential a...
ABSTRACT Anaerobic fermentation with mixed cultures has gained momentum as a bioprocess for its promise to produce platform carboxylates from low-value biomass feedstocks. fermenters are net carbon emitters and their carboxylate yields limited by electron donor availability. In new approach tackle these two disadvantages, we operated bioreactors fed acetate lactate model feedstock while recirculating H 2 /CO stimulate concomitant autotrophic activity. After 42 days of operation,...
ABSTRACT Production of monocarboxylates using microbial communities is highly dependent on local and degradable biomass feedstocks. Syngas or different mixtures H 2 , CO, CO can be co-fed to a fermenter alleviate this dependence. To understand the effects adding these gases during anaerobic fermentation plant biomass, series batch experiments was carried out with syngas compositions corn silage (pH 6.0, 32°C). Co-fermentation increased overall carboxylate yield per gram volatile solids (VS)...