Continuous butyric acid fermentation coupled with REED technology for enhanced productivity

George Nabin Baroi, Ioannis Skiadas, Peter Westermann, Hariklia N. Gavala

Publikation: Konferencebidrag uden forlag/tidsskriftKonferenceabstrakt til konferenceForskningpeer review

Resumé

A major step towards the development of a sustainable industrial society is a shift from petroleum-based resources to renewable resources. An ongoing effort is focused on developing bio-refineries as an alternative way of producing fuels and chemical building-blocks from renewable resources. Thus, today’s organic residues and wastes may become tomorrow’s platform for a variety of products for industrial use. Butyric acid fermentation has long been discussed in the last decade due to the wide application of butyric acid in chemical, pharmaceutical and food industries. Compared to other microbial strains, C.tyrobutyricum seems the most promising for biological production of butyric acid as it is characterised by higher selectivity and higher tolerance to butyric acid. However, studies on fermentative butyric production from lignocellulosic biomasses are scarce in the international literature. The present study focuses on butyric acid fermentation of Pre-treated (by wet explosion) and enzymatically Hydrolysed Wheat Straw (PHWS) by an adapted C. tyrobutyricum strain. The strain could grow in up to 80% (v/v) PHWS in batch mode and it was capable of fermenting both glucose and xylose producing butyric acid at a high yield (0,32-0,46 g/g sugars) and selectivity (0,78-1 g/g acids). However, batch fermentations exhibited low sugars uptake rates, which resulted to long fermentation durations and low butyric acid productivities, especially at increasing concentrations of PHWS. The combination of continuous fermentation mode and in-situ acids removal by Reverse Enhanced Electro Dialysis (REED) resulted to enhanced sugars consumption rates when 60% PHWS was fermented. Specifically, glucose and xylose consumption rate increased by a factor of 6 and 39, respectively, while butyric acid productivity reached 0,88 g/l/h compared to 0,55 g/L/h butyric acid when REED was not applied
OriginalsprogEngelsk
Publikationsdato24 aug. 2014
StatusUdgivet - 24 aug. 2014
BegivenhedInternational Conference on Engineering for Waste and Biomass Valorisation - Avenida Lucio Costa, 2630 Barra da Tijuca RIO DE JANEIRO, BRAZIL, Rio de Janeiro, Brasilien
Varighed: 24 aug. 201428 aug. 2014
Konferencens nummer: 5

Konference

KonferenceInternational Conference on Engineering for Waste and Biomass Valorisation
Nummer5
LokationAvenida Lucio Costa, 2630 Barra da Tijuca RIO DE JANEIRO, BRAZIL
LandBrasilien
ByRio de Janeiro
Periode24/08/201428/08/2014

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fermentation
productivity
acid
sugar
renewable resource
glucose
dialysis
pharmaceutical industry
biological production
food industry
chemical industry
straw
explosion
tolerance
wheat
petroleum
biomass
resource

Citer dette

Baroi, G. N., Skiadas, I., Westermann, P., & Gavala, H. N. (2014). Continuous butyric acid fermentation coupled with REED technology for enhanced productivity. Abstract fra International Conference on Engineering for Waste and Biomass Valorisation, Rio de Janeiro, Brasilien.
Baroi, George Nabin ; Skiadas, Ioannis ; Westermann, Peter ; Gavala, Hariklia N. / Continuous butyric acid fermentation coupled with REED technology for enhanced productivity. Abstract fra International Conference on Engineering for Waste and Biomass Valorisation, Rio de Janeiro, Brasilien.
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Baroi, GN, Skiadas, I, Westermann, P & Gavala, HN 2014, 'Continuous butyric acid fermentation coupled with REED technology for enhanced productivity', Rio de Janeiro, Brasilien, 24/08/2014 - 28/08/2014, .

Continuous butyric acid fermentation coupled with REED technology for enhanced productivity. / Baroi, George Nabin; Skiadas, Ioannis; Westermann, Peter; Gavala, Hariklia N.

2014. Abstract fra International Conference on Engineering for Waste and Biomass Valorisation, Rio de Janeiro, Brasilien.

Publikation: Konferencebidrag uden forlag/tidsskriftKonferenceabstrakt til konferenceForskningpeer review

TY - ABST

T1 - Continuous butyric acid fermentation coupled with REED technology for enhanced productivity

AU - Baroi, George Nabin

AU - Skiadas, Ioannis

AU - Westermann, Peter

AU - Gavala, Hariklia N.

N1 - Electronic version: 5th International Conference on Engineering for Waste and Biomass Valorisation - Aug. 24–28, 2014 - Rio de Janeiro, Brazil. ISBN: 979-10-91526-03-6

PY - 2014/8/24

Y1 - 2014/8/24

N2 - A major step towards the development of a sustainable industrial society is a shift from petroleum-based resources to renewable resources. An ongoing effort is focused on developing bio-refineries as an alternative way of producing fuels and chemical building-blocks from renewable resources. Thus, today’s organic residues and wastes may become tomorrow’s platform for a variety of products for industrial use. Butyric acid fermentation has long been discussed in the last decade due to the wide application of butyric acid in chemical, pharmaceutical and food industries. Compared to other microbial strains, C.tyrobutyricum seems the most promising for biological production of butyric acid as it is characterised by higher selectivity and higher tolerance to butyric acid. However, studies on fermentative butyric production from lignocellulosic biomasses are scarce in the international literature. The present study focuses on butyric acid fermentation of Pre-treated (by wet explosion) and enzymatically Hydrolysed Wheat Straw (PHWS) by an adapted C. tyrobutyricum strain. The strain could grow in up to 80% (v/v) PHWS in batch mode and it was capable of fermenting both glucose and xylose producing butyric acid at a high yield (0,32-0,46 g/g sugars) and selectivity (0,78-1 g/g acids). However, batch fermentations exhibited low sugars uptake rates, which resulted to long fermentation durations and low butyric acid productivities, especially at increasing concentrations of PHWS. The combination of continuous fermentation mode and in-situ acids removal by Reverse Enhanced Electro Dialysis (REED) resulted to enhanced sugars consumption rates when 60% PHWS was fermented. Specifically, glucose and xylose consumption rate increased by a factor of 6 and 39, respectively, while butyric acid productivity reached 0,88 g/l/h compared to 0,55 g/L/h butyric acid when REED was not applied

AB - A major step towards the development of a sustainable industrial society is a shift from petroleum-based resources to renewable resources. An ongoing effort is focused on developing bio-refineries as an alternative way of producing fuels and chemical building-blocks from renewable resources. Thus, today’s organic residues and wastes may become tomorrow’s platform for a variety of products for industrial use. Butyric acid fermentation has long been discussed in the last decade due to the wide application of butyric acid in chemical, pharmaceutical and food industries. Compared to other microbial strains, C.tyrobutyricum seems the most promising for biological production of butyric acid as it is characterised by higher selectivity and higher tolerance to butyric acid. However, studies on fermentative butyric production from lignocellulosic biomasses are scarce in the international literature. The present study focuses on butyric acid fermentation of Pre-treated (by wet explosion) and enzymatically Hydrolysed Wheat Straw (PHWS) by an adapted C. tyrobutyricum strain. The strain could grow in up to 80% (v/v) PHWS in batch mode and it was capable of fermenting both glucose and xylose producing butyric acid at a high yield (0,32-0,46 g/g sugars) and selectivity (0,78-1 g/g acids). However, batch fermentations exhibited low sugars uptake rates, which resulted to long fermentation durations and low butyric acid productivities, especially at increasing concentrations of PHWS. The combination of continuous fermentation mode and in-situ acids removal by Reverse Enhanced Electro Dialysis (REED) resulted to enhanced sugars consumption rates when 60% PHWS was fermented. Specifically, glucose and xylose consumption rate increased by a factor of 6 and 39, respectively, while butyric acid productivity reached 0,88 g/l/h compared to 0,55 g/L/h butyric acid when REED was not applied

M3 - Conference abstract for conference

ER -

Baroi GN, Skiadas I, Westermann P, Gavala HN. Continuous butyric acid fermentation coupled with REED technology for enhanced productivity. 2014. Abstract fra International Conference on Engineering for Waste and Biomass Valorisation, Rio de Janeiro, Brasilien.