1
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Fouling of the Nanofiltration Membrane NF270 Used for Separation of Fermentation Broths: Impact of Feed Pretreatment Process. Processes (Basel) 2023. [DOI: 10.3390/pr11030817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023] Open
Abstract
Recent findings regarding nanofiltration (NF) have led to indications that it can be successfully used for separation of various biological solutions. As a novelty, this paper is the first to investigate the impact of the feed pretreatment process on the NF membrane performance used for separation of 1,3-propanediol (1,3-PD) fermentation broths. For this purpose, prior to the NF process, the feed was purified by microfiltration (MF) and ultrafiltration (UF) processes. Subsequently, the long-term NF process was carried out with the use of a commercial, flat-sheet, thin-film, polyamide NF270 nanofiltration membrane. Thereinto, to determine the dominant fouling mechanism, Hermia’s model was used. With regards to the pretreatment processes performed, it has been determined that the MF membrane (0.14 µm) provided the reduction in the number of bacteria cells present in the permeate, while the UF membrane (450 Da) allowed obtaining the sterile permeate. Consequently, the NF permeate flux for the UF permeate was significantly higher. Analysis of the fouling mechanisms showed that during the separation of the MF permeate, formation of a cake layer on the NF membrane surface was dominant. In turn, with regards to the UF permeate, membrane blocking occurred in two separate phases involving standard blocking and then cake layer formation. Finally, a strategy of NF membrane cleaning with the use of sodium hydroxide (NaOH) solution has been proposed.
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2
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Merkel A, Vavro M, Čopák L, Dvořák L, Ahrné L, Ruchti C. Lactose Mother Liquor Stream Valorisation Using an Effective Electrodialytic Process. MEMBRANES 2022; 13:29. [PMID: 36676836 PMCID: PMC9860800 DOI: 10.3390/membranes13010029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/29/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
The integrated electrodialysis (ED) process supports valorisation of a lactose-rich side stream from the dairy industry, creating an important source of milk sugar used in various branches of the industry. This work focuses on the optimization of the downstream processes before the crystallization of lactose. The process line includes a pre-treatment and desalination by ED of the industrial waste solution of the lactose mother liquor (LML). The LML was diluted to 25% total solids to overcome hydraulic issues with the ED desalination process. Two different levels of electrical conductivity reduction (70% and 90%) of the LML solutions were applied to decrease the mineral components and organic acids of the LML samples. The ED performance parameters such as ash transfer rate (J), the specific capacity (CF) of the ED and specific electric energy consumption (E) were determined and the influence of the LML solution on the monopolar ion-exchange membranes has been investigated. A higher degree of desalination is associated with higher electric energy consumption (by 50%) and lower specific capacity (by 40%). A noticeable decrease (by 12.8%) in the resistance of the anion exchange membranes was measured after the trials whereas the resistance of the cation exchange membranes remained practically unchanged. Any deposition of the alkaline earth metals on the membrane surface was not observed.
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Affiliation(s)
- Arthur Merkel
- MemBrain s.r.o. (Membrane Innovation Centre), Pod Vinicí 87, 471 27 Stráž pod Ralskem, Czech Republic
- Department of Food Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg, Denmark
| | - Matej Vavro
- MemBrain s.r.o. (Membrane Innovation Centre), Pod Vinicí 87, 471 27 Stráž pod Ralskem, Czech Republic
| | - Ladislav Čopák
- MemBrain s.r.o. (Membrane Innovation Centre), Pod Vinicí 87, 471 27 Stráž pod Ralskem, Czech Republic
| | - Lukáš Dvořák
- Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 2, 461 17 Liberec, Czech Republic
| | - Lilia Ahrné
- Department of Food Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg, Denmark
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3
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Liu W, Mao Y, Li Y, Zhang X, Luo F, Wang X, Han X, Xu C. Systematic research on the bipolar membrane reverse electrodialysis performance and its application in electrodialysis desalination. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Wang H, Yan J, Fu R, Yan H, Jiang C, Wang Y, Xu T. Bipolar Membrane Electrodialysis for Cleaner Production of Gluconic Acid: Valorization of the Regenerated Base for the Upstream Enzyme Catalysis. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04657] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Huangying Wang
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Junying Yan
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Rong Fu
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Haiyang Yan
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Chenxiao Jiang
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Yaoming Wang
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Tongwen Xu
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China
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5
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Bipolar membrane electrodialysis for clean production of
L
‐10‐camphorsulfonic
acid: From laboratory to industrialization. AIChE J 2021. [DOI: 10.1002/aic.17490] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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6
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Luo R, Qin Z, Zhou D, Wang D, Hu G, Su Z, Zhang S. Coupling the fermentation and membrane separation process for polyamides monomer cadaverine production from feedstock lysine. Eng Life Sci 2021; 21:623-629. [PMID: 34690633 PMCID: PMC8518567 DOI: 10.1002/elsc.202000099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 04/25/2021] [Accepted: 05/05/2021] [Indexed: 12/02/2022] Open
Abstract
Nylon is a polyamide material with excellent performance used widely in the aviation and automobile industries, and other fields. Nylon monomers such as hexamethylene diamine and other monomers are in huge demand. Therefore, in order to expand the methods of nylon production, we tried to develop alternative bio-manufacturing processes which would make a positive contribution to the nylon industry. In this study, the engineered E. coli-overexpressing Lysine decarboxylases (LDCs) were used for the bioconversion of l-lysine to cadaverine. An integrated fermentation and microfiltration (MF) process for high-level cadaverine production by E. coli was established. Concentration was increased from 87 to 263.6 g/L cadaverine after six batch coupling with a productivity of 3.65 g/L-h. The cadaverine concentration was also increased significantly from 0.43 g cadaverine/g l-lysine to 0.88 g cadaverine/g l-lysine by repeated batch fermentation. These experimental results indicate that coupling the fermentation and membrane separation process could benefit the continuous production of cadaverine at high levels.
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Affiliation(s)
- Ruoshi Luo
- State Key Laboratory of Coal Mine Disaster Dynamics and ControlChongqing UniversityChongqingP. R. China
- Department of Chemical EngineeringSchool of Chemistry and Chemical EngineeringChongqing UniversityChongqingP. R. China
| | - Zhao Qin
- Department of Chemical EngineeringSchool of Chemistry and Chemical EngineeringChongqing UniversityChongqingP. R. China
| | - Dan Zhou
- Department of Chemical EngineeringSchool of Chemistry and Chemical EngineeringChongqing UniversityChongqingP. R. China
| | - Dan Wang
- State Key Laboratory of Coal Mine Disaster Dynamics and ControlChongqing UniversityChongqingP. R. China
- Department of Chemical EngineeringSchool of Chemistry and Chemical EngineeringChongqing UniversityChongqingP. R. China
| | - Ge Hu
- Department of Chemical EngineeringSchool of Chemistry and Chemical EngineeringChongqing UniversityChongqingP. R. China
| | - Zhiguo Su
- Institute of Process EngineeringChinese Academy of SciencesBeijingP. R. China
| | - Suojiang Zhang
- Institute of Process EngineeringChinese Academy of SciencesBeijingP. R. China
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7
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8
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Shielded goethite catalyst that enables fast water dissociation in bipolar membranes. Nat Commun 2021; 12:9. [PMID: 33397931 PMCID: PMC7782813 DOI: 10.1038/s41467-020-20131-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 11/12/2020] [Indexed: 12/05/2022] Open
Abstract
Optimal pH conditions for efficient artificial photosynthesis, hydrogen/oxygen evolution reactions, and photoreduction of carbon dioxide are now successfully achievable with catalytic bipolar membranes-integrated water dissociation and in-situ acid-base generations. However, inefficiency and instability are severe issues in state-of-the-art membranes, which need to urgently resolve with systematic membrane designs and innovative, inexpensive junctional catalysts. Here we show a shielding and in-situ formation strategy of fully-interconnected earth-abundant goethite Fe+3O(OH) catalyst, which lowers the activation energy barrier from 5.15 to 1.06 eV per HO − H bond and fabricates energy-efficient, cost-effective, and durable shielded catalytic bipolar membranes. Small water dissociation voltages at limiting current density (ULCD: 0.8 V) and 100 mA cm−2 (U100: 1.1 V), outstanding cyclic stability at 637 mA cm−2, long-time electro-stability, and fast acid-base generations (H2SO4: 3.9 ± 0.19 and NaOH: 4.4 ± 0.21 M m−2 min−1 at 100 mA cm−2) infer confident potential use of the novel bipolar membranes in emerging sustainable technologies. Bipolar membranes integrated water dissociation and acid-base generations have great potential in emerging sustainable technologies but remains inefficient. Here, the authors circumvent this inefficiency and instability of the membranes by developing polyaniline shielded catalytic bipolar membranes.
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Hansima MACK, Makehelwala M, Jinadasa KBSN, Wei Y, Nanayakkara KGN, Herath AC, Weerasooriya R. Fouling of ion exchange membranes used in the electrodialysis reversal advanced water treatment: A review. CHEMOSPHERE 2021; 263:127951. [PMID: 33297020 DOI: 10.1016/j.chemosphere.2020.127951] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 08/05/2020] [Accepted: 08/07/2020] [Indexed: 06/12/2023]
Abstract
Electrodialysis self-reversal (EDR) technology has attracted in the treatment of water for domestic and industrial uses. The self-reversal consists of a frequent reversal of the direction of current between the EDR-cell electrodes to combat fouling of ion exchange membranes (IEMs). Irrespective of the EDR self-cleaning processes, the role of natural organic matter and their complexing ability with metal ions on IEMs fouling is partially understood. The objective of this review is to identify the research gaps present in the elucidation of IEM fouling routes. The common IEMs' foulants are identified, and several fouling mechanisms are briefly discussed. The effectiveness of self-cleaning mechanisms to reduce IEMs fouling is also be discussed. Dissolved organic carbon (DOC) possesses high chelation which forms metal complexes with di and trivalent cations found in water. The role of ternary complexes, e.g. M2+/3+-DOC and membrane surface, on membrane fouling via surface bridging, are also addressed. Finally, mitigation methods of IEMs membrane fouling are also discussed.
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Affiliation(s)
- M A C K Hansima
- Post Graduate Institute of Science (PGIS), University of Peradeniya, Peradeniya, 20400, Sri Lanka
| | - Madhubhashini Makehelwala
- NSF Project, Department of Civil Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya, 20400, Sri Lanka; China-Sri Lanka Joint Research and Demonstration Center for Water Technology, Ministry of Water Supply, Sri Lanka.
| | - K B S N Jinadasa
- Department of Civil Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya, 20400, Sri Lanka
| | - Yuansong Wei
- Department of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; National Centre for Water Quality Research, National Institute of Fundamental Studies, Kandy, 20000, Sri Lanka
| | - K G N Nanayakkara
- Department of Civil Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya, 20400, Sri Lanka
| | - Ajith C Herath
- Department of Chemical Sciences, Rajarata University of Sri Lanka, Mihinthale, 50300, Sri Lanka
| | - Rohan Weerasooriya
- National Centre for Water Quality Research, National Institute of Fundamental Studies, Kandy, 20000, Sri Lanka
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10
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Production and purification of fructo-oligosaccharides using an enzyme membrane bioreactor and subsequent fermentation with probiotic Bacillus coagulans. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117291] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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12
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Downstream separation and purification of bio-based alpha-ketoglutaric acid from post-fermentation broth using a multi-stage membrane process. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.05.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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13
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Tomczak W, Gryta M. Cross-Flow Microfiltration of Glycerol Fermentation Broths with Citrobacter freundii. MEMBRANES 2020; 10:E67. [PMID: 32276458 PMCID: PMC7231405 DOI: 10.3390/membranes10040067] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/01/2020] [Accepted: 04/04/2020] [Indexed: 11/17/2022]
Abstract
This paper reports the study of the cross-flow microfiltration (MF) of glycerol fermentation broths with Citrobacter freundii bacteria. A single channel tubular ceramic membrane with a nominal pore size of 0.14 µm was used. It has been demonstrated that the MF ceramic membrane has been successfully applied to bacteria cell removal and to effectively eliminate colloidal particles from glycerol fermentation broths. However, due to fouling, the significant reduction of the MF performance has been demonstrated. In order to investigate the impact of transmembrane pressure (TMP) and feed flow rate (Q) on MF performance, 24 experiments have been performed. The highest steady state permeate flux (138.97 dm3/m2h) was achieved for 0.12 MPa and 1000 dm3/h. Fouling analysis has been studied based on the resistance-in series model. It has been found that the percentage of irreversible fouling resistance during the MF increases with increasing TMP and Q. The permeate flux regeneration has been achieved by membrane cleaning with 3 wt % NaOH and 3 wt % H3PO4 at 45 °C. The results of this study are expected to be useful in industrially employing the MF process as the first step of glycerol fermentation broth purification.
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Affiliation(s)
- Wirginia Tomczak
- Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, ul. Pułaskiego 10, 70-322 Szczecin, Poland
| | - Marek Gryta
- Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, ul. Pułaskiego 10, 70-322 Szczecin, Poland
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14
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Chen H, Su Z, Wang Y, Wang B, Si Z, Lu J, Su C, Ren W, Chen H, Cai D, Qin P. Lactic acid production from pretreated corn stover with recycled streams. Process Biochem 2020. [DOI: 10.1016/j.procbio.2019.12.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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15
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Purification and polymerisation of microbial d-lactic acid from DDGS hydrolysates fermentation. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2019.107265] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Comparison between microfluidic tangential flow nanofiltration and centrifugal nanofiltration for the concentration of small-volume samples. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.02.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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17
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Prochaska K, Antczak J, Regel-Rosocka M, Szczygiełda M. Removal of succinic acid from fermentation broth by multistage process (membrane separation and reactive extraction). Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.10.043] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Fan R, Ebrahimi M, Czermak P. Anaerobic Membrane Bioreactor for Continuous Lactic Acid Fermentation. MEMBRANES 2017; 7:membranes7020026. [PMID: 28467384 PMCID: PMC5489860 DOI: 10.3390/membranes7020026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 04/19/2017] [Accepted: 04/27/2017] [Indexed: 11/25/2022]
Abstract
Membrane bioreactor systems can enhance anaerobic lactic acid fermentation by reducing product inhibition, thus increasing productivity. In batch fermentations, the bioconversion of glucose is strongly inhibited in the presence of more than 100 g·L−1 lactic acid and is only possible when the product is simultaneously removed, which can be achieved by ceramic membrane filtration. The crossflow velocity is a more important determinant of flux than the transmembrane pressure. Therefore, to stabilize the performance of the membrane bioreactor system during continuous fermentation, the crossflow velocity was controlled by varying the biomass concentration, which was monitored in real-time using an optical sensor. Continuous fermentation under these conditions, thus, achieved a stable productivity of ~8 g·L−1·h−1 and the concentration of lactic acid was maintained at ~40 g·L−1 at a dilution rate of 0.2 h−1. No residual sugar was detected in the steady state with a feed concentration of 50 g·L−1.
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Affiliation(s)
- Rong Fan
- Institute of Bioprocess Engineering and Membrane Technology, University of Applied Sciences Mittelhessen, Giessen 35390, Germany.
| | - Mehrdad Ebrahimi
- Institute of Bioprocess Engineering and Membrane Technology, University of Applied Sciences Mittelhessen, Giessen 35390, Germany.
| | - Peter Czermak
- Institute of Bioprocess Engineering and Membrane Technology, University of Applied Sciences Mittelhessen, Giessen 35390, Germany.
- Department of Chemical Engineering, Kansas State University, Manhattan, KS 66506, USA.
- Faculty of Biology and Chemistry, Justus Liebig University Giessen, Giessen 35390, Germany.
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19
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Highly efficient synthesis of cumene via benzene isopropylation over nano-sized beta zeolite in a submerged ceramic membrane reactor. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2016.06.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Fan R, Ebrahimi M, Quitmann H, Czermak P. Lactic acid production in a membrane bioreactor system with thermophilic Bacillus coagulans: Online monitoring and process control using an optical sensor. SEP SCI TECHNOL 2016. [DOI: 10.1080/01496395.2016.1213747] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Rong Fan
- Institute of Bioprocess Engineering and Membrane Technology, University of Applied Sciences Mittelhessen, Giessen, Germany
| | - Mehrdad Ebrahimi
- Institute of Bioprocess Engineering and Membrane Technology, University of Applied Sciences Mittelhessen, Giessen, Germany
| | - Hendrich Quitmann
- Institute of Bioprocess Engineering and Membrane Technology, University of Applied Sciences Mittelhessen, Giessen, Germany
| | - Peter Czermak
- Institute of Bioprocess Engineering and Membrane Technology, University of Applied Sciences Mittelhessen, Giessen, Germany
- Department of Chemical Engineering, Kansas State University, Manhattan, Kansas, USA
- Faculty of Biology and Chemistry, Justus Liebig University, Giessen, Germany
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21
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22
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Bernardo MP, Coelho LF, Sass DC, Contiero J. l-(+)-Lactic acid production by Lactobacillus rhamnosus B103 from dairy industry waste. Braz J Microbiol 2016; 47:640-6. [PMID: 27266630 PMCID: PMC4927665 DOI: 10.1016/j.bjm.2015.12.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 12/22/2015] [Indexed: 11/28/2022] Open
Abstract
Lactic acid, which can be obtained through fermentation, is an interesting compound because it can be utilized in different fields, such as in the food, pharmaceutical and chemical industries as a bio-based molecule for bio-refinery. In addition, lactic acid has recently gained more interest due to the possibility of manufacturing poly(lactic acid), a green polymer that can replace petroleum-derived plastics and be applied in medicine for the regeneration of tissues and in sutures, repairs and implants. One of the great advantages of fermentation is the possibility of using agribusiness wastes to obtain optically pure lactic acid. The conventional batch process of fermentation has some disadvantages such as inhibition by the substrate or the final product. To avoid these problems, this study was focused on improving the production of lactic acid through different feeding strategies using whey, a residue of agribusiness. The downstream process is a significant bottleneck because cost-effective methods of producing high-purity lactic acid are lacking. Thus, the investigation of different methods for the purification of lactic acid was one of the aims of this work. The pH-stat strategy showed the maximum production of lactic acid of 143.7 g/L. Following purification of the lactic acid sample, recovery of reducing sugars and protein and color removal were 0.28%, 100% and 100%, respectively.
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Affiliation(s)
- Marcela Piassi Bernardo
- UNESP - Univ. Estadual Paulista, Biological Sciences Institute, Department of Biochemistry and Microbiology, Rio Claro, SP, Brazil
| | - Luciana Fontes Coelho
- UNESP - Univ. Estadual Paulista, Biological Sciences Institute, Department of Biochemistry and Microbiology, Rio Claro, SP, Brazil
| | - Daiane Cristina Sass
- UNESP - Univ. Estadual Paulista, Biological Sciences Institute, Department of Biochemistry and Microbiology, Rio Claro, SP, Brazil
| | - Jonas Contiero
- UNESP - Univ. Estadual Paulista, Biological Sciences Institute, Department of Biochemistry and Microbiology, Rio Claro, SP, Brazil; Laboratório Associado do IPBEN-Instituto de Pesquisa em Bioenergy da Unesp, Araraquara, Brazil.
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23
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Mikhaylin S, Bazinet L. Fouling on ion-exchange membranes: Classification, characterization and strategies of prevention and control. Adv Colloid Interface Sci 2016; 229:34-56. [PMID: 26813627 DOI: 10.1016/j.cis.2015.12.006] [Citation(s) in RCA: 177] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 12/02/2015] [Accepted: 12/06/2015] [Indexed: 01/06/2023]
Abstract
The environmentally friendly ion-exchange membrane (IEM) processes find more and more applications in the modern industries in order to demineralize, concentrate and modify products. Moreover, these processes may be applied for the energy conversion and storage. However, the main drawback of the IEM processes is a formation of fouling, which significantly decreases the process efficiency and increases the process cost. The present review is dedicated to the problematic of IEM fouling phenomena. Firstly, the major types of IEM fouling such as colloidal fouling, organic fouling, scaling and biofouling are discussed along with consideration of the main factors affecting fouling formation and development. Secondly, the review of the possible methods of IEM fouling characterization is provided. This section includes the methods of fouling visualization and characterization as well as methods allowing investigations of characteristics of the fouled IEMs. Eventually, the reader will find the conventional and modern strategies of prevention and control of different fouling types.
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24
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Wang X, Liang F, Huang C, Li Y, Chen B. Siliceous tin phosphates as effective bifunctional catalysts for selective conversion of dihydroxyacetone to lactic acid. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00553e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Siliceous tin phosphates were demonstrated to be efficient Brønsted–Lewis acid bifunctional catalysts during the conversion of triose sugars to LA under hydrothermal conditions.
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Affiliation(s)
- Xincheng Wang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Fengbing Liang
- CAS Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- China
| | - Chongpin Huang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Yingxia Li
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Biaohua Chen
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
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25
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Li X, Wang Y, Pan J, Yang Z, He Y, Mondal AN, Xu T. The preparation and application of a low-cost multi-channel tubular inorganic–organic composite microfiltration membrane. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.07.042] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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26
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Fan R, Ebrahimi M, Quitmann H, Czermak P. Lactic acid production in a membrane bioreactor system with thermophilic Bacillus coagulans: fouling analysis of the used ceramic membranes. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2015.1031401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Vikramachakravarthi D, Kumar R, Pal P. Production of L (+) Glutamic Acid in a Fully Membrane-Integrated Hybrid Reactor System: Direct and Continuous Production under Non-Neutralizing Conditions. Ind Eng Chem Res 2014. [DOI: 10.1021/ie503499w] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- D. Vikramachakravarthi
- Environmental and Membrane Technology
Laboratory, Department of Chemical Engineering, National Institute of Technology, Durgapur, India 713209
| | - Ramesh Kumar
- Environmental and Membrane Technology
Laboratory, Department of Chemical Engineering, National Institute of Technology, Durgapur, India 713209
| | - Parimal Pal
- Environmental and Membrane Technology
Laboratory, Department of Chemical Engineering, National Institute of Technology, Durgapur, India 713209
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Improving the lactic acid production of Actinobacillus succinogenes by using a novel fermentation and separation integration system. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.04.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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