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Wu L, Wei W, Liu X, Wang D, Ni BJ. Potentiality of recovering bioresource from food waste through multi-stage Co-digestion with enzymatic pretreatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 319:115777. [PMID: 35982572 DOI: 10.1016/j.jenvman.2022.115777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/15/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
Food waste (FW) is not only a major social, nutritional and environmental issue, but also an underutilized resource with significant energy, which has not been fully explored currently. Considering co-digestion can adjust carbon to nitrogen ratio (C/N) of the feedstock and improve the synergetic interactions among microorganisms, anaerobic co-digestion (AnCoD) is then becoming an emerging approach to achieve higher energy recovery from FW while ensuring the stability of the system. To obtain higher economic gain from such biodegradable wastes, increasing attention has been paid on optimizing the system configuration or applying enzymatic hydrolysis before digesting FW. A better understanding on the potentiality of correlating enzymatic pretreatment and AnCoD operated in various system configuration would enhance the bioresource recovery from FW and increase revenue through treating this organic waste. Specifically, the biobased chemicals outputs from FW-related co-digestion system with different configuration were firstly compared in this review. A deep discussion concerning the challenges for achieving bioresources recovery from FW co-digestion systems with enzymatic pretreatment was then given. Recommendations for future studies regarding FW co-digestion were then proposed at last.
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Affiliation(s)
- Lan Wu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Wei Wei
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Xuran Liu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Dongbo Wang
- Key Laboratory of Environmental Biology and Pollution Control, College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China.
| | - Bing-Jie Ni
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia.
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2
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Morales-Polo C, Cledera-Castro MDM, Revuelta-Aramburu M, Hueso-Kortekaas K. Enhancing Energy Recovery in Form of Biogas, from Vegetable and Fruit Wholesale Markets By-Products and Wastes, with Pretreatments. PLANTS 2021; 10:plants10071298. [PMID: 34206726 PMCID: PMC8309048 DOI: 10.3390/plants10071298] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/13/2021] [Accepted: 06/17/2021] [Indexed: 11/28/2022]
Abstract
Residues and by-products from vegetables and fruit wholesale markets are suitable for recovery in the form of energy through anaerobic digestion, allowing waste recovery and introducing them into the circular economy. This suitability is due to their composition, structural characteristics, and to the biogas generation process, which is stable and without inhibition. However, it has been observed that the proportion of methane and the level of degradation of the substrate is low. It is decided to study whether the effect of pretreatments on the substrate is beneficial. Freezing, ultrafreezing and lyophilization pretreatments are studied. A characterization of the substrates has been performed, the route of action of pretreatment determined, and the digestion process studied to calculate the generation of biogas, methane, hydrogen and the proportions among these. Also, a complete analysis of the process has been performed by processing the data with mathematical and statistical methods to obtain disintegration constants and levels of degradation. It has been observed that the three pretreatments have positive effects, when increasing the solubility of the substrate, increasing porosity, and improving the accessibility of microorganisms to the substrate. Generation of gases are greatly increased, reaching a methane enrichment of 59.751%. Freezing seems to be the best pretreatment, as it increases the biodegradation level, the speed of the process and the disintegration constant by 306%.
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Affiliation(s)
- Carlos Morales-Polo
- Institute for Research in Technology, Comillas Pontifical University, 28015 Madrid, Spain;
- Department of Mechanical Engineering, ICAI School of Engineering, Comillas Pontifical University, 28015 Madrid, Spain; (M.R.-A.); (K.H.-K.)
- Rafael Mariño Chair for New Energy Technology, Comillas Pontifical University, 28015 Madrid, Spain
- Correspondence: ; Tel.: +34-91-542-28-00
| | - María del Mar Cledera-Castro
- Institute for Research in Technology, Comillas Pontifical University, 28015 Madrid, Spain;
- Department of Mechanical Engineering, ICAI School of Engineering, Comillas Pontifical University, 28015 Madrid, Spain; (M.R.-A.); (K.H.-K.)
- Rafael Mariño Chair for New Energy Technology, Comillas Pontifical University, 28015 Madrid, Spain
| | - Marta Revuelta-Aramburu
- Department of Mechanical Engineering, ICAI School of Engineering, Comillas Pontifical University, 28015 Madrid, Spain; (M.R.-A.); (K.H.-K.)
| | - Katia Hueso-Kortekaas
- Department of Mechanical Engineering, ICAI School of Engineering, Comillas Pontifical University, 28015 Madrid, Spain; (M.R.-A.); (K.H.-K.)
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3
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Biogas Production from Vegetable and Fruit Markets Waste—Compositional and Batch Characterizations. SUSTAINABILITY 2019. [DOI: 10.3390/su11236790] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
This study presents a complete characterization of the residual materials found in fruit and vegetable markets and their adaptability to be treated by anaerobic digestion with the aim of generating biogas as a new and renewable energy source. It has been determined that these substrates are perfectly suitable to be treated by anaerobic digestion, being rich in simple carbohydrates, with a high content of moisture and solids (total and volatile), which makes it a substrate of easy solubilization and with a great amount of matter directly accessible to the microorganisms responsible for anaerobic degradation. The process develops smoothly, with a slight release of acidic elements, but without impact by the development of the buffer effect by ammonia. In addition, a phenomenon of digestion is observed in two phases, indicating that despite the particulateing of the substrate, it manages to digest the organic matter directly accessible and the inaccessible. In numerical terms, 100 g of residue V produce 913.282 NmL of biogas, of which 289.333 NmL correspond to methane. The disintegration constant is 0.200 days−1, with 16,045% of the substrate degraded. As an innovation, the hydrogen generated in the process has been used as an indicator of the stability and development of the process. Accompanied by a statistical analysis and mathematical adjustments, it is possible to characterize in depth the process and its evolution, determining that the degradation is fast, with a rapid and stable hydrolysis.
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Kalhor P, Ghandi K. Deep Eutectic Solvents for Pretreatment, Extraction, and Catalysis of Biomass and Food Waste. Molecules 2019; 24:E4012. [PMID: 31698717 PMCID: PMC6891572 DOI: 10.3390/molecules24224012] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 10/28/2019] [Accepted: 11/04/2019] [Indexed: 12/14/2022] Open
Abstract
Valorization of lignocellulosic biomass and food residues to obtain valuable chemicals is essential to the establishment of a sustainable and biobased economy in the modern world. The latest and greenest generation of ionic liquids (ILs) are deep eutectic solvents (DESs) and natural deep eutectic solvents (NADESs); these have shown great promise for various applications and have attracted considerable attention from researchers who seek versatile solvents with pretreatment, extraction, and catalysis capabilities in biomass- and biowaste-to-bioenergy conversion processes. The present work aimed to review the use of DESs and NADESs in the valorization of biomass and biowaste as pretreatment or extraction solvents or catalysis agents.
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Affiliation(s)
- Payam Kalhor
- MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China;
| | - Khashayar Ghandi
- Department of Chemistry, University of Guelph, Guelph, ON N1G 2W1, Canada
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5
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Tan L, Nishimura H, Wang YF, Sun ZY, Tang YQ, Kida K, Morimura S. Effect of organic loading rate on thermophilic methane fermentation of stillage eluted from ethanol fermentation of waste paper and kitchen waste. J Biosci Bioeng 2019; 127:582-588. [DOI: 10.1016/j.jbiosc.2018.10.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 10/02/2018] [Accepted: 10/09/2018] [Indexed: 10/27/2022]
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6
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Nayak A, Bhushan B. An overview of the recent trends on the waste valorization techniques for food wastes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 233:352-370. [PMID: 30590265 DOI: 10.1016/j.jenvman.2018.12.041] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 12/09/2018] [Accepted: 12/14/2018] [Indexed: 05/05/2023]
Abstract
A critical and up-to-date review has been conducted on the latest individual valorization technologies aimed at the generation of value-added by-products from food wastes in the form of bio-fuels, bio-materials, value added components and bio-based adsorbents. The aim is to examine the associated advantages and drawbacks of each technique separately along with the assessment of process parameters affecting the efficiency of the generation of the bio-based products. Challenges faced during the processing of the wastes to each of the bio-products have been explained and future scopes stated. Among the many hurdles encountered in the successful and high yield generation of the bio-products is the complexity and variability in the composition of the food wastes along with the high inherent moisture content. Also, individual technologies have their own process configurations and operating parameters which may affect the yield and composition of the desired end product. All these require extensive study of the composition of the food wastes followed by their effective pre-treatments, judicial selection of the technological parameters and finally optimization of not only the process configurations but also in relation to the input food waste material. Attempt has also been made to address the hurdles faced during the implementation of such technologies on an industrial scale.
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Affiliation(s)
- A Nayak
- Innovació i Recerca Industrial I Sostenible, S.L., 08860, Spain; Graphic Era University, Dehradun, 248002, India.
| | - Brij Bhushan
- Graphic Era University, Dehradun, 248002, India; Chemical Engineering Department, Universitat Politechnica Catalunya, UPC-BarcelonaTECH, Barcelona, 08860, Spain
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7
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Anwar Saeed M, Ma H, Yue S, Wang Q, Tu M. Concise review on ethanol production from food waste: development and sustainability. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:28851-28863. [PMID: 30159834 DOI: 10.1007/s11356-018-2972-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 08/14/2018] [Indexed: 06/08/2023]
Abstract
The development of sustainable bioethanol fuel production from food waste has increasingly become an attractive topic. Food waste is recognized as the most available and costless feedstock. Therefore, ethanol production has been adopted as cost-efficient and an ecological way for FW disposal. This paper reviewed the microorganisms utilized for ethanol fermentation, the effect of enzymatic hydrolysis on ethanol concentration, optimization of accurate process parameters, and recycling of huge volumes of stillage for ethanol production towards reducing any incurred environmental burdens and minimizing the cost. The statistical tools which may enhance the process efficiency had been presented. Also, the perspective and the future development were introduced. All these aimed to fully utilize the food waste and also reduce the cost for side-product in this process; proper operation conditions and the control methods for stillage recycling were considered as the methods to improve ethanol fermentation from food waste.
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Affiliation(s)
- Mashair Anwar Saeed
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, 100083, China
| | - Hongzhi Ma
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, 100083, China.
| | - Siyuan Yue
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, 100083, China
| | - Qunhui Wang
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, 100083, China
| | - Maobing Tu
- Department of Biomedical, Chemical and Environmental Engineering, University of Cincinnati, 2901 Woodside Drive, Cincinnati, OH, 45221, USA
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8
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Ren Y, Yu M, Wu C, Wang Q, Gao M, Huang Q, Liu Y. A comprehensive review on food waste anaerobic digestion: Research updates and tendencies. BIORESOURCE TECHNOLOGY 2018; 247:1069-1076. [PMID: 28965913 DOI: 10.1016/j.biortech.2017.09.109] [Citation(s) in RCA: 217] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 09/14/2017] [Accepted: 09/15/2017] [Indexed: 05/22/2023]
Abstract
Anaerobic digestion has been practically applied in agricultural and industrial waste treatment and recognized as an economical-effective way for food waste disposal. This paper presented an overview on the researches about anaerobic digestion of food waste. Technologies (e.g., pretreatment, co-digestion, inhibition and mitigation, anaerobic digestion systems, etc.) were introduced and evaluated on the basis of bibliometric analysis. Results indicated that ethanol and aerobic prefermentation were novel approaches to enhance substrates hydrolysis and methane yield. With the promotion of resource recovery, more attention should be paid to biorefinery technologies which can produce more useful products toward zero emissions. Furthermore, a technological route for food waste conversion based on anaerobic digestion was proposed.
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Affiliation(s)
- Yuanyuan Ren
- Department of Environmental Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China
| | - Miao Yu
- Department of Environmental Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China
| | - Chuanfu Wu
- Department of Environmental Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China
| | - Qunhui Wang
- Department of Environmental Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China.
| | - Ming Gao
- Department of Environmental Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China
| | - Qiqi Huang
- Department of Environmental Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China
| | - Yu Liu
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore
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9
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Karthikeyan OP, Mehariya S, Chung Wong JW. Bio-refining of food waste for fuel and value products. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.egypro.2017.10.253] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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10
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Nishimura H, Tan L, Kira N, Tomiyama S, Yamada K, Sun ZY, Tang YQ, Morimura S, Kida K. Production of ethanol from a mixture of waste paper and kitchen waste via a process of successive liquefaction, presaccharification, and simultaneous saccharification and fermentation. WASTE MANAGEMENT (NEW YORK, N.Y.) 2017; 67:86-94. [PMID: 28527862 DOI: 10.1016/j.wasman.2017.04.030] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 02/26/2017] [Accepted: 04/17/2017] [Indexed: 06/07/2023]
Abstract
Efficient ethanol production from waste paper requires the addition of expensive nutrients. To reduce the production cost of ethanol from waste paper, a study on how to produce ethanol efficiently by adding kitchen waste (potentially as a carbon source, nutrient source, and acidity regulator) to waste paper was performed and a process of successive liquefaction, presaccharification, and simultaneous saccharification and fermentation (L+PSSF) was developed. The individual saccharification performances of waste paper and kitchen waste were not influenced by their mixture. Liquefaction of kitchen waste at 90°C prior to presaccharification and simultaneous saccharification and fermentation (PSSF) was essential for efficient ethanol fermentation. Ethanol at concentrations of 46.6 or 43.6g/l was obtained at the laboratory scale after fermentation for 96h, even without pH adjustment and/or the addition of extra nutrients. Similarly, ethanol at a concentration of 45.5g/l was obtained at the pilot scale after fermentation for 48h. The ethanol concentration of L+PSSF of the mixture of waste paper and kitchen waste was comparable to that of PSSF of waste paper with added nutrients (yeast extract and peptone) and pH adjustment using H2SO4, indicating that kitchen waste is not only a carbon source but also an excellent nutrient source and acidity regulator for fermentation of the mixture of waste paper and kitchen waste.
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Affiliation(s)
- Hiroto Nishimura
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan; Hitachi Zosen Corporation, 1-7-89 Nankokita, Suminoe-ku, Osaka 559-8559, Japan
| | - Li Tan
- Key Laboratory of Environmental and Applied Microbiology, Chinese Academy of Sciences, No. 9 Section 4, Renmin Nan Road, Chengdu 610041, China; College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu 610065, China
| | - Noriko Kira
- Hitachi Zosen Corporation, 1-7-89 Nankokita, Suminoe-ku, Osaka 559-8559, Japan
| | - Shigeo Tomiyama
- Hitachi Zosen Corporation, 1-7-89 Nankokita, Suminoe-ku, Osaka 559-8559, Japan
| | - Kazuo Yamada
- Global Environment Policy Office, Kyoto City, 488, Teramachi-Oike, Nakagyo-ku, Kyoto 604-8571, Japan
| | - Zhao-Yong Sun
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu 610065, China
| | - Yue-Qin Tang
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu 610065, China
| | - Shigeru Morimura
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
| | - Kenji Kida
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan; College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu 610065, China.
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11
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Huang YL, Sun ZY, Zhong XZ, Wang TT, Tan L, Tang YQ, Kida K. Aerobic composting of digested residue eluted from dry methane fermentation to develop a zero-emission process. WASTE MANAGEMENT (NEW YORK, N.Y.) 2017; 61:206-212. [PMID: 28089402 DOI: 10.1016/j.wasman.2017.01.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 12/06/2016] [Accepted: 01/04/2017] [Indexed: 06/06/2023]
Abstract
Digested residue remained at the end of a process for the production of fuel ethanol and methane from kitchen garbage. To develop a zero-emission process, the compostability of the digested residue was assessed to obtain an added-value fertilizer. Composting of the digested residue by adding matured compost and a bulking agent was performed using a lab-scale composting reactor. The composting process showed that volatile total solid (VTS) degradation mainly occurred during the first 13days, and the highest VTS degradation efficiency was about 27% at the end. The raw material was not suitable as a fertilizer due to its high NH4+ and volatile fatty acids (VFAs) concentration. However, the composting process produced remarkable results; the physicochemical properties indicated that highly matured compost was obtained within 62days of the composting process, and the final N concentration, NO3- concentration, and the germination index (GI) at the end of the composting process was 16.4gkg-1-TS, 9.7gkg-1-TS, and 151%, respectively. Real-time quantitative PCR (qPCR) analysis of ammonia oxidizers indicated that the occurrence of nitrification during the composting of digested residue was attributed to the activity of ammonia-oxidizing bacteria (AOB).
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Affiliation(s)
- Yu-Lian Huang
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu, Sichuan 610065, China
| | - Zhao-Yong Sun
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu, Sichuan 610065, China.
| | - Xiao-Zhong Zhong
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu, Sichuan 610065, China
| | - Ting-Ting Wang
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu, Sichuan 610065, China
| | - Li Tan
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu, Sichuan 610065, China
| | - Yue-Qin Tang
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu, Sichuan 610065, China
| | - Kenji Kida
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu, Sichuan 610065, China
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12
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Food Waste to Energy: An Overview of Sustainable Approaches for Food Waste Management and Nutrient Recycling. BIOMED RESEARCH INTERNATIONAL 2017; 2017:2370927. [PMID: 28293629 PMCID: PMC5331173 DOI: 10.1155/2017/2370927] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 12/29/2016] [Accepted: 01/12/2017] [Indexed: 01/06/2023]
Abstract
Food wastage and its accumulation are becoming a critical problem around the globe due to continuous increase of the world population. The exponential growth in food waste is imposing serious threats to our society like environmental pollution, health risk, and scarcity of dumping land. There is an urgent need to take appropriate measures to reduce food waste burden by adopting standard management practices. Currently, various kinds of approaches are investigated in waste food processing and management for societal benefits and applications. Anaerobic digestion approach has appeared as one of the most ecofriendly and promising solutions for food wastes management, energy, and nutrient production, which can contribute to world's ever-increasing energy requirements. Here, we have briefly described and explored the different aspects of anaerobic biodegrading approaches for food waste, effects of cosubstrates, effect of environmental factors, contribution of microbial population, and available computational resources for food waste management researches.
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13
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Wang YF, Tan L, Wang T, Sun ZY, Tang YQ, Kida K. Production of ethanol from kitchen waste by using flocculating Saccharomyces cerevisiae KF-7. ENVIRONMENTAL TECHNOLOGY 2017; 38:316-325. [PMID: 27241454 DOI: 10.1080/09593330.2016.1192224] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 05/17/2016] [Indexed: 06/05/2023]
Abstract
Kitchen waste is rich in carbohydrates and can potentially serve as feedstock for ethanol production. Starch was the primary carbohydrate in kitchen waste obtained from the canteen in the Sichuan University, which was used to evaluate long-term ethanol fermentation performance in this study. The optimal conditions for liquefaction and saccharification of the kitchen waste were as follows: adding α-amylase at 0.3 μL/g glucan for liquefaction at 90°C for 30 min, and adding glucoamylase at 4 μL/g glucan for saccharification at 50°C. Glucose yield obtained under the optimal conditions was over 80%. Addition of cellulase did not enhance glucose yield, but decreased the viscosity of the saccharified slurry. Repeated-batch presaccharification followed by simultaneous saccharification and fermentation of 20 batches was successfully carried out at an aeration of 0.1 vvm. Ethanol concentration of 43.9-45.0 g/L was achieved, corresponding to ethanol yield and productivity of 88.9-91.2% and 3.3-3.5 g/L/h, respectively, and the CO2/ethanol molar ratio was approximately 1. Continuous PSSF was stably carried out at a dilution rate of ≤0.3 h-1. Productivity was 11.5 g/L/h at a dilution rate of 0.3 h-1. Ethanol concentration and yield were 42.0 g/L and 82.8% at a dilution rate of 0.2 h-1, respectively.
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Affiliation(s)
- Yan-Fang Wang
- a College of Architecture and Environment , Sichuan University , Chengdu , People's Republic of China
| | - Li Tan
- a College of Architecture and Environment , Sichuan University , Chengdu , People's Republic of China
| | - Ting Wang
- a College of Architecture and Environment , Sichuan University , Chengdu , People's Republic of China
| | - Zhao-Yong Sun
- a College of Architecture and Environment , Sichuan University , Chengdu , People's Republic of China
| | - Yue-Qin Tang
- a College of Architecture and Environment , Sichuan University , Chengdu , People's Republic of China
| | - Kenji Kida
- a College of Architecture and Environment , Sichuan University , Chengdu , People's Republic of China
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14
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You Y, Wu B, Yang YW, Wang YW, Liu S, Zhu QL, Qin H, Tan FR, Ruan ZY, Ma KD, Dai LC, Zhang M, Hu GQ, He MX. Replacing process water and nitrogen sources with biogas slurry during cellulosic ethanol production. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:236. [PMID: 29046722 PMCID: PMC5644083 DOI: 10.1186/s13068-017-0921-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 10/03/2017] [Indexed: 05/04/2023]
Abstract
BACKGROUND Environmental issues, such as the fossil energy crisis, have resulted in increased public attention to use bioethanol as an alternative renewable energy. For ethanol production, water and nutrient consumption has become increasingly important factors being considered by the bioethanol industry as reducing the consumption of these resources would decrease the overall cost of ethanol production. Biogas slurry contains not only large amounts of wastewater, but also the nutrients required for microbial growth, e.g., nitrogen, ammonia, phosphate, and potassium. Therefore, biogas slurry is an attractive potential resource for bioethanol production that could serve as an alternative to process water and nitrogen sources. RESULTS In this study, we propose a method that replaces the process water and nitrogen sources needed for cellulosic ethanol production by Zymomonas mobilis with biogas slurry. To test the efficacy of these methods, corn straw degradation following pretreatment with diluted NaOH and enzymatic hydrolysis in the absence of fresh water was evaluated. Then, ethanol fermentation using the ethanologenic bacterial strain Z. mobilis ZMT2 was conducted without supplementing with additional nitrogen sources. After pretreatment with 1.34% NaOH (w/v) diluted in 100% biogas slurry and continuous enzymatic hydrolysis for 144 h, 29.19 g/L glucose and 12.76 g/L xylose were generated from 30 g dry corn straw. The maximum ethanol concentration acquired was 13.75 g/L, which was a yield of 72.63% ethanol from the hydrolysate medium. Nearly 94.87% of the ammonia nitrogen was depleted and no nitrate nitrogen remained after ethanol fermentation. The use of biogas slurry as an alternative to process water and nitrogen sources may decrease the cost of cellulosic ethanol production by 10.0-20.0%. By combining pretreatment with NaOH diluted in biogas slurry, enzymatic hydrolysis, and ethanol fermentation, 56.3 kg of ethanol was produced by Z. mobilis ZMT-2 through fermentation of 1000 kg of dried corn straw. CONCLUSIONS In this study, biogas slurry replaced process water and nitrogen sources during cellulosic ethanol production. The results suggest that biogas slurry is a potential alternative to water when pretreating corn straw and, thus, has important potential applications in cellulosic ethanol production from corn straw. This study not only provides a novel method for utilizing biogas slurry, but also demonstrates a means of reducing the overall cost of cellulosic ethanol.
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Affiliation(s)
- Yang You
- Biomass Energy Technology Research Centre, Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture), Biogas Institute of Ministry of Agriculture, Section 4-13, Renmin Nanlu, Chengdu, 610041 People’s Republic of China
| | - Bo Wu
- Biomass Energy Technology Research Centre, Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture), Biogas Institute of Ministry of Agriculture, Section 4-13, Renmin Nanlu, Chengdu, 610041 People’s Republic of China
| | - Yi-Wei Yang
- Biomass Energy Technology Research Centre, Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture), Biogas Institute of Ministry of Agriculture, Section 4-13, Renmin Nanlu, Chengdu, 610041 People’s Republic of China
| | - Yan-Wei Wang
- Biomass Energy Technology Research Centre, Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture), Biogas Institute of Ministry of Agriculture, Section 4-13, Renmin Nanlu, Chengdu, 610041 People’s Republic of China
| | - Song Liu
- Biomass Energy Technology Research Centre, Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture), Biogas Institute of Ministry of Agriculture, Section 4-13, Renmin Nanlu, Chengdu, 610041 People’s Republic of China
| | - Qi-Li Zhu
- Biomass Energy Technology Research Centre, Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture), Biogas Institute of Ministry of Agriculture, Section 4-13, Renmin Nanlu, Chengdu, 610041 People’s Republic of China
| | - Han Qin
- Biomass Energy Technology Research Centre, Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture), Biogas Institute of Ministry of Agriculture, Section 4-13, Renmin Nanlu, Chengdu, 610041 People’s Republic of China
| | - Fu-Rong Tan
- Biomass Energy Technology Research Centre, Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture), Biogas Institute of Ministry of Agriculture, Section 4-13, Renmin Nanlu, Chengdu, 610041 People’s Republic of China
| | - Zhi-Yong Ruan
- Key Laboratory of Microbial Resources (Ministry of Agriculture, China), Institute of Agricultural Resources and Regional Planning, CAAS, Beijing, 100081 People’s Republic of China
| | - Ke-Dong Ma
- College of Environmental and Chemical Engineering, Dalian University, Dalian, 116622 People’s Republic of China
| | - Li-Chun Dai
- Biomass Energy Technology Research Centre, Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture), Biogas Institute of Ministry of Agriculture, Section 4-13, Renmin Nanlu, Chengdu, 610041 People’s Republic of China
| | - Min Zhang
- Biomass Energy Technology Research Centre, Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture), Biogas Institute of Ministry of Agriculture, Section 4-13, Renmin Nanlu, Chengdu, 610041 People’s Republic of China
| | - Guo-Quan Hu
- Biomass Energy Technology Research Centre, Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture), Biogas Institute of Ministry of Agriculture, Section 4-13, Renmin Nanlu, Chengdu, 610041 People’s Republic of China
| | - Ming-Xiong He
- Biomass Energy Technology Research Centre, Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture), Biogas Institute of Ministry of Agriculture, Section 4-13, Renmin Nanlu, Chengdu, 610041 People’s Republic of China
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15
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You Y, Liu S, Wu B, Wang YW, Zhu QL, Qin H, Tan FR, Ruan ZY, Ma KD, Dai LC, Zhang M, Hu GQ, He MX. Bio-ethanol production by Zymomonas mobilis using pretreated dairy manure as a carbon and nitrogen source. RSC Adv 2017. [DOI: 10.1039/c6ra26288k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Dairy manure contains high levels of cellulose, hemicellulose and a nitrogen source.
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16
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Huang YL, Tan L, Wang TT, Sun ZY, Tang YQ, Kida K. Thermophilic Dry Methane Fermentation of Distillation Residue Eluted from Ethanol Fermentation of Kitchen Waste and Dynamics of Microbial Communities. Appl Biochem Biotechnol 2016; 181:125-141. [PMID: 27526112 DOI: 10.1007/s12010-016-2203-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Accepted: 07/25/2016] [Indexed: 11/29/2022]
Abstract
Thermophilic dry methane fermentation is advantageous for feedstock with high solid content. Distillation residue with 65.1 % moisture content was eluted from ethanol fermentation of kitchen waste and subjected to thermophilic dry methane fermentation, after adjusting the moisture content to 75 %. The effect of carbon to nitrogen (C/N) ratio on thermophilic dry methane fermentation was investigated. Results showed that thermophilic dry methane fermentation could not be stably performed for >10 weeks at a C/N ratio of 12.6 and a volatile total solid (VTS) loading rate of 1 g/kg sludge/d; however, it was stably performed at a C/N ratio of 19.8 and a VTS loading rate of 3 g/kg sludge/d with 83.4 % energy recovery efficiency. Quantitative PCR analysis revealed that the number of bacteria and archaea decreased by two orders of magnitude at a C/N ratio of 12.6, whereas they were not influenced at a C/N ratio of 19.8. Microbial community analysis revealed that the relative abundance of protein-degrading bacteria increased and that of organic acid-oxidizing bacteria and acetic acid-oxidizing bacteria decreased at a C/N ratio of 12.6. Therefore, there was accumulation of NH4+ and acetic acid, which inhibited thermophilic dry methane fermentation.
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Affiliation(s)
- Yu-Lian Huang
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu, 610065, China
| | - Li Tan
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu, 610065, China
| | - Ting-Ting Wang
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu, 610065, China
| | - Zhao-Yong Sun
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu, 610065, China
| | - Yue-Qin Tang
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu, 610065, China
| | - Kenji Kida
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu, 610065, China.
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17
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Nishimura H, Tan L, Sun ZY, Tang YQ, Kida K, Morimura S. Efficient production of ethanol from waste paper and the biochemical methane potential of stillage eluted from ethanol fermentation. WASTE MANAGEMENT (NEW YORK, N.Y.) 2016; 48:644-651. [PMID: 26687227 DOI: 10.1016/j.wasman.2015.11.051] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 11/03/2015] [Accepted: 11/30/2015] [Indexed: 06/05/2023]
Abstract
Waste paper can serve as a feedstock for ethanol production due to being rich in cellulose and not requiring energy-intensive thermophysical pretreatment. In this study, an efficient process was developed to convert waste paper to ethanol. To accelerate enzymatic saccharification, pH of waste paper slurry was adjusted to 4.5-5.0 with H2SO4. Presaccharification and simultaneous saccharification and fermentation (PSSF) with enzyme loading of 40 FPU/g waste paper achieved an ethanol yield of 91.8% and productivity of 0.53g/(Lh) with an ethanol concentration of 32g/L. Fed-batch PSSF was used to decrease enzyme loading to 13 FPU/g waste paper by feeding two separate batches of waste paper slurry. Feeding with 20% w/w waste paper slurry increased ethanol concentration to 41.8g/L while ethanol yield decreased to 83.8%. To improve the ethanol yield, presaccharification was done prior to feeding and resulted in a higher ethanol concentration of 45.3g/L, a yield of 90.8%, and productivity of 0.54g/(Lh). Ethanol fermentation recovered 33.2% of the energy in waste paper as ethanol. The biochemical methane potential of the stillage eluted from ethanol fermentation was 270.5mL/g VTS and 73.0% of the energy in the stillage was recovered as methane. Integrating ethanol fermentation with methane fermentation, recovered a total of 80.4% of the energy in waste paper as ethanol and methane.
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Affiliation(s)
- Hiroto Nishimura
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
| | - Li Tan
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu 610065, China.
| | - Zhao-Yong Sun
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu 610065, China
| | - Yue-Qin Tang
- College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu 610065, China
| | - Kenji Kida
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan; College of Architecture and Environment, Sichuan University, No. 24 South Section 1, First Ring Road, Chengdu 610065, China
| | - Shigeru Morimura
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
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18
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Li YC, Li GY, Gou M, Xia ZY, Tang YQ, Kida K. Functional expression of xylose isomerase in flocculating industrial Saccharomyces cerevisiae strain for bioethanol production. J Biosci Bioeng 2015; 121:685-691. [PMID: 26645659 DOI: 10.1016/j.jbiosc.2015.10.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 10/11/2015] [Accepted: 10/29/2015] [Indexed: 10/22/2022]
Abstract
Saccharomyces cerevisiae strains with xylose isomerase (XI) pathway were constructed using a flocculating industrial strain (YC-8) as the host. Both strains expressing wild-type xylA (coding XI) from the fungus Orpinomyces sp. and the bacterium Prevotella ruminicola, respectively, showed better growth ability and fermentation capacity when using xylose as the sole sugar than most of the reported strains expressing XI. Codon optimization of both XIs did not improve the xylose fermentation ability of the strains. Adaption significantly increased XI activity resulting in improved growth and fermentation. The strains expressing codon-optimized XI showed a higher increase in xylose consumption and ethanol production compared to strains expressing wild XI. Among all strains, the adapted strain YCPA2E expressing XI from P. ruminicola showed the best performance in the fermentation of xylose to ethanol. After 48 h of fermentation, YCPA2E assimilated 16.95 g/L xylose and produced 6.98 g/L ethanol. These results indicate that YC-8 is a suitable host strain for XI expression, especially for the codon-optimized XI originating from P. ruminicola.
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Affiliation(s)
- Yun-Cheng Li
- College of Light Industry, Textile and Food Engineering, Sichuan University, No. 24, South Section 1, First Ring Road, Chengdu 610065, China; College of Architecture and Environment, Sichuan University, No. 24, South Section 1, First Ring Road, Chengdu 610065, China
| | - Guo-Ying Li
- College of Light Industry, Textile and Food Engineering, Sichuan University, No. 24, South Section 1, First Ring Road, Chengdu 610065, China
| | - Min Gou
- College of Architecture and Environment, Sichuan University, No. 24, South Section 1, First Ring Road, Chengdu 610065, China
| | - Zi-Yuan Xia
- College of Architecture and Environment, Sichuan University, No. 24, South Section 1, First Ring Road, Chengdu 610065, China
| | - Yue-Qin Tang
- College of Architecture and Environment, Sichuan University, No. 24, South Section 1, First Ring Road, Chengdu 610065, China.
| | - Kenji Kida
- College of Architecture and Environment, Sichuan University, No. 24, South Section 1, First Ring Road, Chengdu 610065, China
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19
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Simultaneous decrease in ammonia and hydrogen sulfide inhibition during the thermophilic anaerobic digestion of protein-rich stillage by biogas recirculation and air supply at 60°C. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.09.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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20
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Moqsud MA, Omine K, Yasufuku N, Bushra QS, Hyodo M, Nakata Y. Bioelectricity from kitchen and bamboo waste in a microbial fuel cell. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2014; 32:124-130. [PMID: 24519226 DOI: 10.1177/0734242x13517160] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This study evaluated bioelectricity generation by using kitchen garbage (KG) and bamboo waste (BW) as a solid waste management option by a microbial fuel cell (MFC) method. The nutrient content [nitrogen, phosphorus and potassium (NPK)] of the by-products of bioelectricity were also analyzed and assessed for their potential use as a soil amendment. A one-chamber MFC was used for bioelectricity generation in laboratory experiments using both KG and BW. A data-logger recorded voltage every 20 mins at a constant room temperature of 25°C over 45 days. The trend of voltage generation was different for the two organic wastes. In the case of KG, the voltage at the initial stage (0-5 days) increased rapidly and then gradually to a peak of 620 mV. In contrast, the voltage increased gradually to a peak of 540 mV in the case of BW. The by-products of bioelectricity can be used as soil conditioner as its NPK content was in the range of soil conditioner mentioned in other literature. Thus, the MFC has emerged as an efficient and eco-friendly solution for organic waste management, especially in developing and technologically less sophisticated countries, and can provide green and safe electricity from organic waste.
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Affiliation(s)
- M Azizul Moqsud
- 1Department of Civil Engineering, Yamaguchi University, Japan
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21
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Potent l-lactic acid assimilation of the fermentative and heterothallic haploid yeast Saccharomyces cerevisiae NAM34-4C. J Biosci Bioeng 2014; 117:65-70. [DOI: 10.1016/j.jbiosc.2013.06.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 05/10/2013] [Accepted: 06/03/2013] [Indexed: 11/22/2022]
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22
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Moqsud MA, Omine K, Yasufuku N, Hyodo M, Nakata Y. Microbial fuel cell (MFC) for bioelectricity generation from organic wastes. WASTE MANAGEMENT (NEW YORK, N.Y.) 2013; 33:2465-2469. [PMID: 23962448 DOI: 10.1016/j.wasman.2013.07.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 07/11/2013] [Accepted: 07/24/2013] [Indexed: 06/02/2023]
Abstract
Microbial fuel cells (MFCs) have gained a lot of attention recently as a mode of converting organic matter into electricity. In this study, a compost-based microbial fuel cell that generates bioelectricity by biodegradation of organic matter is developed. Grass cuttings, along with leaf mold, rice bran, oil cake (from mustard plants) and chicken droppings (waste from chickens) were used as organic waste. The electric properties of the MFC under anaerobic fermentation condition were investigated along with the influence of different types of membranes, the mixing of fly ash, and different types of electrode materials. It is observed that the maximum voltage was increased by mixing fly ash. Cellophane showed the highest value of voltage (around 350mV). Bamboo charcoal is good for anode material; however carbon fiber is better for the cathode material in terms of optimization of power generated. This developed MFC is a simple cell to generate electricity from organic waste.
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Affiliation(s)
- M Azizul Moqsud
- Department of Civil and Environmental Engineering, Yamaguchi University, Japan.
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23
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Jiang X, Hayashi J, Sun ZY, Yang L, Tang YQ, Oshibe H, Osaka N, Kida K. Improving biogas production from protein-rich distillery wastewater by decreasing ammonia inhibition. Process Biochem 2013. [DOI: 10.1016/j.procbio.2013.08.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Improvement of ethanol production from D-lactic acid by constitutive expression of lactate transporter Jen1p in Saccharomyces cerevisiae. Biosci Biotechnol Biochem 2013; 77:1114-6. [PMID: 23649240 DOI: 10.1271/bbb.120985] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
To improve ethanol production from D-lactate, Jen1p, a monocarboxylate-proton symporter, was constitutively expressed in Saccharomyces cerevisiae NAM34-4C. The mutant produced 2.4 g/L of ethanol, approximately 2.4 times higher than that of the wild-type strain. A monocarboxylate/proton symporter gene (JEN1) null mutant was also constructed. It produced 0.19 g/L of ethanol, 5 times lower than that of the wild-type strain.
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25
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Wakamatsu M, Tani T, Taguchi H, Matsuoka M, Kida K, Akamatsu T. Ethanol production from D-lactic acid by lactic acid-assimilating Saccharomyces cerevisiae NAM34-4C. J Biosci Bioeng 2013; 116:85-90. [PMID: 23419456 DOI: 10.1016/j.jbiosc.2013.01.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Revised: 12/14/2012] [Accepted: 01/24/2013] [Indexed: 10/27/2022]
Abstract
The lactic acid-assimilating yeast Saccharomyces cerevisiae NAM34-4C grew rapidly in minimal D-lactate medium (pH 3.5) at 35°C, compared with minimal L-lactate medium. A laboratory strain, S. cerevisiae S288C, did not grow in either medium at pH 3.5. Strain NAM34-4C produced remarkably high levels of ethanol in YPDL medium at pH 3.5, but not at pH 5.5, when D-lactate was provided as the carbon source. Optimal cultivation conditions for ethanol production from D-lactate by strain NAM34-4C were as follows: shaking speed, 60 rpm; initial pH, 3.0; cultivation temperature, 35°C; yeast extract, 5 g/L; peptone, 10 g/L; and D-lactate, 30 g/L. Under these conditions, strain NAM34-4C produced 2.7 g/L ethanol, which is 18% of the theoretical maximal yield (0.51 3 initial D-lactate concentration).
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Affiliation(s)
- Makoto Wakamatsu
- Department of Applied Microbial Technology, Faculty of Biotechnology and Life Science, Sojo University, 4-22-1 Ikeda, Kumamoto 860-0082, Japan
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Pilot-scale production of fuel ethanol from concentrated food waste hydrolysates using Saccharomyces cerevisiae H058. Bioprocess Biosyst Eng 2012; 36:937-46. [PMID: 23010725 DOI: 10.1007/s00449-012-0827-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Accepted: 09/05/2012] [Indexed: 10/27/2022]
Abstract
The aim of this study was to develop a bioprocess to produce ethanol from food waste at laboratory, semipilot and pilot scales. Laboratory tests demonstrated that ethanol fermentation with reducing sugar concentration of 200 g/L, inoculum size of 2 % (Initial cell number was 2 × 10⁶ CFU/mL) and addition of YEP (3 g/L of yeast extract and 5 g/L of peptone) was the best choice. The maximum ethanol concentration in laboratory scale (93.86 ± 1.15 g/L) was in satisfactory with semipilot scale (93.79 ± 1.11 g/L), but lower than that (96.46 ± 1.12 g/L) of pilot-scale. Similar ethanol yield and volumetric ethanol productivity of 0.47 ± 0.02 g/g, 1.56 ± 0.03 g/L/h and 0.47 ± 0.03 g/g, 1.56 ± 0.03 g/L/h after 60 h of fermentation in laboratory and semipilot fermentors, respectively, however, both were lower than that (0.48 ± 0.02 g/g, 1.79 ± 0.03 g/L/h) of pilot reactor. In addition, simple models were developed to predict the fermentation kinetics during the scale-up process and they were successfully applied to simulate experimental results.
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27
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Tsavkelova EA, Netrusov AI. Biogas production from cellulose-containing substrates: A review. APPL BIOCHEM MICRO+ 2012. [DOI: 10.1134/s0003683812050134] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Factors influencing the degradation of garbage in methanogenic bioreactors and impacts on biogas formation. Appl Microbiol Biotechnol 2012; 94:575-82. [DOI: 10.1007/s00253-012-3953-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Revised: 02/06/2012] [Accepted: 02/06/2012] [Indexed: 10/28/2022]
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29
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Ethanol production from concentrated food waste hydrolysates with yeast cells immobilized on corn stalk. Appl Microbiol Biotechnol 2012; 94:829-38. [DOI: 10.1007/s00253-012-3990-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2012] [Revised: 02/19/2012] [Accepted: 02/20/2012] [Indexed: 11/30/2022]
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30
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Tang YQ, Ji P, Hayashi J, Koike Y, Wu XL, Kida K. Characteristic microbial community of a dry thermophilic methanogenic digester: its long-term stability and change with feeding. Appl Microbiol Biotechnol 2011; 91:1447-61. [DOI: 10.1007/s00253-011-3479-9] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Revised: 06/28/2011] [Accepted: 07/13/2011] [Indexed: 11/28/2022]
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