Ethanol Production In An Integrated Process Of Fermentation And Ethanol Recovery By Pervaporation

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Membrane-assisted extractive fermentation for the production

Membrane-assisted extractive fermentation for the production of biobased molecules: towards bioprocess intensification Marwen Moussa , Claire Saulou-Bérion, Violaine Athès , Andreia Teixera, Henry-Eric Spinnler Institute of technology for life, food and environmental sciences

A novel in situ gas stripping-pervaporation process

A Novel In Situ Gas Stripping-Pervaporation Process Integrated With Acetone-Butanol-Ethanol Fermentation for Hyper n-Butanol Production Chuang Xue,1 Fangfang Liu,2 Mengmeng Xu,2 Jingbo Zhao,2 Lijie Chen,1 Jiangang Ren,1 Fengwu Bai,1 Shang-Tian Yang2 1Department of Life Science and Biotechnology, Dalian University of Technology, Dalian

Mechanistic simulation of batch acetone butanol ethanol (ABE

The alcohol products of the acetone butanol ethanol (ABE) fermentation process, butanol and ethanol, have properties that make them of interest for liquid transporta-tion fuels [4 6]. Additionally, acetone and butanol are used as solvents and for the production of other chemicals []. 7

Contents Chemical Engineering and Processing: Process

Nov 01, 2014 Acetone butanol ethanol themselves (ABE) Fermentation Intensification A B S T R A C T Pervaporation (PV) has attracted increasing attention because of its potential application in bio-butanol recovery from fermentation process. In this work, PDMS/ceramic composite membrane was employed for PV separation of acetone butanol ethanol (ABE

Delft University of Technology Vapour permeation for ethanol

fermentation set‒up. The bioethanol yield is increased by recovering ethanol from fermentation off‒gas. Another reason for this recovery is the legal limit for ethanol emission from a bioethanol plant, which can be 40 t/year for example [18]. The ethanol recovery from fermentation off‒gas is conventionally done by water absorption.

Journal of Membrane and Separation Technology, 2013, 245-262

production of acrylates, esters, ethers and acetates [1,2]. Another potential application is the use of butanol as fuel additive similar to ethanol [3,4]. Biobutanol production with the so-called acetone-butanol-ethanol (ABE) fermentation process is the second largest biotechnological process that has ever been realized in terms of capacities [5].


fermentation. The major drawbacks of ABE fermentation are low product concentrations which in turn makes recovery of these products quite expensive. One technique to combat this is liquid-liquid-extraction. This involves contacting the fermentation broth with another chemical to extract acetone, butanol and ethanol from the fermentation broth.

Alternative Schemes for the Purification of Bioethanol: A

sources of ethanol. A second topic of interest on ethanol production is the search for a higher efficiency on the fermentation, recovery and purification processes for the produced alcohol [1-3]. The cost for the production of ethanol has an intimate dependence on the costs of the raw material used, and also on its composition and availability.

Techno-economic analysis and life-cycle assessment of

derived from fermentation broth, such as ethanol, isobuta-nol, and n-butanol. Energy consumption and complexity of the purifi cation process could be an additional technical barrier to large-scale production. Th e butanol separation techniques include adsorption, liquid-liquid extraction, pervaporation, reverse osmosis, and gas stripping. Due to

Energy-Efficient Production of Cassava-Based Bio-Ethanol

bio-ethanol production will remain the most important production process in the immediate future [6]-[8], whilst second and third generation processes still need further development on laboratory and pilot scale to remove major drawbacks, and increase the bio-ethanol yield per input biomass weight [9]-[13]. 3. The Bio-Ethanol Production Processes

Process Modelling In Production of Biobutanol from

distillation used as recovery and purification method(B-SHF/LLE&D). The impacts of different fermentation methods, fermentation technology improvements and products recovery/purification methods on the energy demand, energy efficiency and economics of the various process scenarios were investigated. Furthermore, the

fermentation coupled processes for biobutanol recovery Recent

integrated with pervaporation were explored respectively. In addition, future direction of the development of membrane materials and fermentation coupled process for biobutanol recovery is prospected. 2. Principle of pervaporation separation and fermentation-pervaporation coupled process 2.1. Pervaporation separation process

Alternatives for the Purification of the Blend Butanol

in the production of alcohols from biomass [9]. To enhance the process, the application of integrated fermentation-saccharifi-cation reactors has been proposed [10]. A second important challenge in this process is the purifica-tion of butanol, since the stream leaving the fermentation stage is diluted, with a water composition close to 80wt% [11].

Acetone butanol ethanol (ABE) fermentation using Clostridium

and pH was not controlled during fermentation. ABE production in the fermenter integrated with PV The medium and volume in the fermenter integrated with PV were the same as those used for the batch fermentation experiment. Batch fermentation mode was allowed to proceed for 32 h in the batch fermentation with in situ recovery by pervaporation.

Chemical Engineering & Processing: Process Intensi cation

liquid feed [16]. Pervaporation is claimed to be a favourable method of separation due to the fact that it can be integrated with the fermenta-tion process so that the inhibitory products can be removed con-tinuously, thereby enhancing the productivity of the fermentation process [17]. It also has a high separation factor and is harmless to-

Supplemental Information ethanol production: broth recycling

ethanol production: broth recycling by fermentation-pervaporation hybrid process Changwei Zhang a,b, Siyu Pang b, Meng Lv b, Xiangyu Wang b, Changsheng Su b, Weixiang Gao b, Huidong Chen c,d, Di Cai a,b,*, Peiyong Qin a,b, Tianwei Tan a,b * Corresponding author Address: No.15, East Road of the North 3rd Ring, Chaoyang District, Beijing, 100029.


proposed application of pervaporation within the process of ethanol production from ligno-cellulosic materials essentially comprises concentration during the fermentation phase and dehydration of the produced ethanol to the required purity (greater than 99%). The integrated process is schematically presented in Figure-1

Evaluation of hydrophobic micro-zeolite-mixed matrix membrane

butanol recovery. Enhanced ABE fermentation with the zeolite‑mixed membrane The ABE fermentation without/with pervaporation was carried out to investigate the performance of product recovery from active fermentation broth. In typical batch fermentation without pervaporation, with the medium initially containing 80.0 g/L glucose, about 12.8 g/L

Overview of Alternative Ethanol Removal Techniques for

Jul 17, 2019 2. Alternative Ethanol Recovery Techniques During the biochemical reaction, a wide range of metabolites can be formed by the microorganisms. In several biochemical reactions like the alcoholic fermentation, the accumulation of the end-product in the broth inhibits the fermentation process and stops further production [18 22]. Currently

Eco-efficient butanol separation in the ABE fermentation process

22 the production cost of the acetone-butanol-ethanol (ABE) fermentation process is still high, 23 mainly due to the low butanol titer, yield and productivity in bioprocesses. The conventional 24 recovery by distillation is an energy-intensive process that has largely restricted the economic 25 production of biobutanol.

Acetone butanol ethanol (ABE) production from concentrated

Using the integrated fermentation-gas stripping product-recovery system with CO 2 and H 2 as carrier gases, we carried out fed-batch fermentation experiments and measured various characteristics of the fermentation, including ABE production, selectivity, yield and produc-tivity. The fed-batch reactor was operated for 201 h. At the end of the

Biorefineries : integrated biochemical processes for liquid

11.2.2Butanol Toxicity andExtractive Fermentation 229 11.3 Integrated Biorefinery 230 11.4 Perspectives 231 References 231 PARTIVPROCESS ECONOMICS& FARM-BASED BIOREFINERY CHAPTER12 Process Economicsof RenewableBiorefineries: Butanol and Ethanol Production in Integrated Bioprocessesfrom Lignocellulosics and Other Industrial By-Products 237 12.1


generation ethanol production while guaranteeing self-sufficiency in energy and steam production. Therefore, unit operations of the first generation ethanol production process from sugarcane should be redesigned in order to increase feasibility of integration of a second generation ethanol production from DOI: 10.3303/CET1437075

Improving Biofuels Recovery Processes for Energy Efficiency

demonstrated a novel pervaporation-based ethanol recovery technology which enables the economical production of ethanol from biomass readily available throughout rural areas. One project targeted whey, a byproduct of cheese production. A typical cheese facility generates enough whey to produce around 1-2 million gallons of ethanol per year (MGY).

Overview of Alternative Ethanol Removal Techniques for

mixtures, which would be more suitable for ethanol purification rather than ethanol recovery from the fermentation broth. A large number of papers have been published to study the performance of the pervaporation process to recover ethanol from the fermentation broth. Thus, Table 1 summarizes some recent studies conducted between 2008 2018.

Using starchy waste as a promising raw material for

energy but after purification process. The most traditional process used at recovery of ethanol is a distillation, which considered as a challenge because of the high costs and energy expenditure required (Vane, 2008). Toward this end, membrane separation processes that applied through the pervaporation technique have been used.

Grisales Diaz VH, Olivar Tost G. Energy efficiency of a new

requirements for ethanol or butanol recovery from fermentation broths are achieved (between 2.3 and 2.5 MJ-fuel/kg-solvent). However, these energy requirements are similar to equivalent dehydration systems with heat-integrated distillation by compression work without membranes [13].

Energy efficiency of acetone, butanol, and ethanol (ABE

energy requirements of ABE production were between 1.3- and 2.0-fold higher than that for alternative biofuels (ethanol or isobutanol). However, the energy efficiency of ABE production was equivalent than that for ethanol and isobutanol (between 0.71 and 0.76) because of hydrogen production in ABE fermentation.


glucose to ethanol by yeast fermentation (Lynd et al, 2001). The enzymatic hydrolysis process can be combined with the microbial fermentation process into one unit for accomplishing the so-called Simultaneous Saccharification and Fermentation (SSF) process that is described elsewhere (South et al., 1993).

Bioproduction of butanol in bioreactors: New insights from

Characterization of the Vacuum Recovery Process To evaluate the vacuum process for ABE recovery from a dilute solution, the process was conducted at 37 0.58C using a model ABE solution in the presence and absence of fermentation intermediates, acetic, and butyric acid. Initial concentrations of butanol in the model solution were 5, 8,

Pervaporation for the separation of Acetone-Butanol-Ethanol

Pervaporation for the separation of Acetone-Butanol-Ethanol from aqueous mixtures Elisabete Regina Silva Brazão Instituto Superior Técnico ABSTRACT The comprehensive objective of this work is to assess the recovery of organics from ABE mixtures, using a pervaporation process.


In this researchthe simulation of three in situ recovery , methods, namely, vacuum fermentation, gas stripping and pervaporationwere performed , in order toincrease the effici ency of the continuous ABE fermentation by decreasing the effect of butanol toxicity. non-integrated and The integrated butanol production systems


and recovery of ethanol, hybrid distillation-pervaporation consists of a distillation column and an externally connected pervaporation module is used to overcome the azeotropic composition from the liquid mixtures of water and ethanol. The result is an integrated system of continuously producing bioethanol in purity up to 99.8%(w /w).

Potential of Membrane Bioreactors in Ethanol and Biogas

The basic problem with ethanol and biogas production is the question of process economy and product yield which can be curbed by using MBRs which helps in achieving high cell densities ans product separation. Ethanol is currently produced from sugar and starch-rich materials, which are also used as food and feed. The current global debate on

Incorporation of Mass and Energy Integration in the Optimal

Bioethanol production at industrial scale relies on several processes, such as corn-to ethanol, sugarcane-to-ethanol, and basic and integrated lignocellulosic biomass-to-ethanol [3]. Basically, the raw materials undergo some pretreatment steps and then enter the fermentation stage where bioethanol is pro-duced.

Acetone-butanol-ethanol (ABE) Production from Cassava by a

Acetone-butanol-ethanol (ABE) Production from Cassava by a Fermentation-pervaporation Coupled Process Yinhua Wan Institute of Process Engineering Chinese Academy of Sciences Email:[email protected] Pacific Rim Summit on Industrial Biotechnology and Bioenergy December 7-9, 2014, San Diego, California

Pervaporative fermentation for continuous anaerobic

The present work was aimed to develop an integrated process for the continuous production of n-butanol using the E. coli strain in a membrane bioreactor, coupled to a pervaporation unit, according the following strategy: In vivo evolution of the E. coli strain: this step allowed selecting highly solvent-resistant mutants.

Applied in Situ Product Recovery in ABE Fermentation

techniques applied to the acetone butanol ethanol fermentation in a stirred tank reactor. Meth-ods of in situ recovery include gas stripping, vacuum fermentation, pervaporation, liquid liquid extraction, perstraction, and adsorption, all of which have been investigated for the acetone, butanol, and ethanol fermentation.

Multicolumn adsorption for the vapor phase recovery of

fermentation broth is an important challenge (Branduardi et al., 2014). Secondly, significant research efforts are directed towards integrated butanol recovery taking place during the fermentation process, relieving product inhibition and increasing productivity. Traditional butanol recovery methods involve distillation (Vane et al., 2008

Minireview: High-Productivity and Low-Cost Biobutanol

Butanol-Ethanol (ABE) fermentation and used as a solvent between 1920 and 1980, but the biological production gradually slowed down because of the rise of cheaper petrochemical synthesis of butanol from crude oil and the high cost of fermentation raw materials [1,2,3,4]. However, the renewed interests and trends towards using green