The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Jo Shu Chang - One of the best experts on this subject based on the ideXlab platform.
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Recent insights into consolidated bioprocessing for lignocellulosic Biohydrogen production
International Journal of Hydrogen Energy, 2019Co-Authors: Dillirani Nagarajan, Duu-jong Lee, Jo Shu ChangAbstract:Abstract Biohydrogen production via dark fermentation using fermentable sugars from biomass materials is a sustainable way of procuring Biohydrogen. Lignocellulosic biomass is a potential renewable feedstock for dark fermentation, but its use is challenged by the recalcitrant nature and generation of certain fermentation inhibitors resulting in compromised fermentation performance. Consolidated bioprocessing (CBP), the successful integration of hydrolysis and fermentation of lignocellulosic biomass to desirable products, has received tremendous research attentions in recent years to boost renewable fuel production in an economically feasible way. A microbial strain capable of both biomass hydrolysis and hydrogen fermentation is critical for successful CBP-based hydrogen fermentation. This review provides comprehensive information on dark fermentation for hydrogen production using lignocellulosic biomass as a potential feedstock with a CBP approach. Consolidated bioprocessing of lignocellulosic biomass for Biohydrogen production via native and recombinant microbial strains is discussed in detail. Potential bottlenecks in the above mentioned processes are critically analyzed and future research perspectives are presented.
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biomass based hydrogen production by dark fermentation recent trends and opportunities for greener processes
Current Opinion in Biotechnology, 2018Co-Authors: Gopalakrishnan Kumar, Chiu-yue Lin, Dillirani Nagarajan, Duu-jong Lee, Sutha Shobana, Kuo Shing Lee, Chun Yen Chen, Jo Shu ChangAbstract:The generation of Biohydrogen as source of biofuel/bioenergy from the wide variety of biomass has gathered a substantial quantum of research efforts in several aspects. One of the major thrusts in this field has been the pursuit of technically sound and effective methods and/or approaches towards significant improvement in the bioconversion efficiency and enhanced Biohydrogen yields. In this perspective, the present contribution showcases the views formulated based on the latest advances reported in dark fermentative Biohydrogen production (DHFP), which is considered as the most feasible route for commercialization of Biohydrogen. The potential prospects and future research avenues are also presented.
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Recent insights into Biohydrogen production by microalgae - From biophotolysis to dark fermentation.
Bioresource technology, 2016Co-Authors: Dillirani Nagarajan, Akihiko Kondo, Jo Shu ChangAbstract:One of the best options to alleviate the problems associated with global warming and climate change is to reduce burning of fossil fuels and search for new alternative energy resources. In case of biodiesel and bioethanol production, the choice of feedstock and the process design influences the GHG emissions and appropriate methods need to be adapted. Hydrogen is a zero-carbon and energy dense alternative energy carrier with clean burning properties and Biohydrogen production by microalgae can reduce production associated GHG emissions to a great extent. Biohydrogen can be produced through dark fermentation using sugars, starch, or cellulosic materials. Microalgae-based Biohydrogen production is recently regarded as a promising pathway for Biohydrogen production via photolysis or being a substrate for anaerobic fermentation. This review lists the methods of hydrogen production by microalgae. The enzymes involved and the factors affecting the Biohydrogen production process are discussed. The bottlenecks in microalgae-based Biohydrogen production are critically reviewed and future research areas in hydrogen production are presented.
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dark fermentative hydrogen production with crude glycerol from biodiesel industry using indigenous hydrogen producing bacteria
International Journal of Hydrogen Energy, 2013Co-Authors: Yung Chung Lo, Xuejiao Chen, Chiyu Huang, Yingjin Yuan, Jo Shu ChangAbstract:Abstract Glycerol is an inevitable by-product from biodiesel synthesis process and could be a promising feedstock for fermentative hydrogen production. In this study, the feasibility of using crude glycerol from biodiesel industry for Biohydrogen production was evaluated using seven isolated hydrogen-producing bacterial strains (Clostridium butyricum, Clostridium pasteurianum, and Klebsiella sp.). Among the strains examined, C. pasteurianum CH4 exhibited the best Biohydrogen-producing performance under the optimal conditions of: temperature, 35 °C; initial pH, 7.0; agitation rate, 200 rpm; glycerol concentration, 10 g/l. When using pure glycerol as carbon source for continuous hydrogen fermentation, the average H2 production rate and H2 yield were 103.1 ± 8.1 ml/h/l and 0.50 ± 0.02 mol H2/mol glycerol, respectively. In contrast, when using crude glycerol as the carbon source, the H2 production rate and H2 yield was improved to 166.0 ± 8.7 ml/h/l and 0.77 ± 0.05 mol H2/mol glycerol, respectively. This work demonstrated the high potential of using biodiesel by-product, glycerol, for cost-effective Biohydrogen production.
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fermentative hydrogen production from wastewaters a review and prognosis
International Journal of Hydrogen Energy, 2012Co-Authors: Gopalakrishnan Kumar, Chin Chao Chen, Jo Shu ChangAbstract:Abstract Biohydrogen is a promising candidate which can replace a part of our fossil fuels need in day-to-day life due its perceived environmental benefits and availability through dark fermentation of organic substrates. Moreover, advances in Biohydrogen production technologies based on organic wastewater conversion could solve the issues related to food security, climate change, energy security and clean development in the future. An evaluation of studies reported on Biohydrogen production from different wastewaters will be of immense importance in economizing production technologies. Here we have reviewed Biohydrogen production yields and rates from different wastewaters using sludges and microbial consortiums and evaluated the feasibility of Biohydrogen production from unexplored wastewaters and development of integrated bioenergy process. Biohydrogen production has been observed in the range of substrate concentration 0.25–160 g COD/L, pH 4–8, temperature 23–60 °C, HRT 0.5–72 h with various types of reactor configuration. The most efficient hydrogen production has been obtained at an organic loading rate (OLR) 320 g COD/L/d, substrate concentration 40 g COD/L, HRT 3 h, pH 5.5–6.0, temperature 35 °C in a continuously-stirred tank reactor system using mixed cultures and fed with condensed molasses fermentation soluble wastewater. The net energy efficiency analysis showed vinasse wastewater has the highest positive net energy gain followed by glycerin wastewater and domestic sewage as 140.39, 68.65, 51.84 kJ/g COD feedstock with the hydrogen yield (HY) of 10 mmol/g COD respectively.
Jamaliah Md Jahim - One of the best experts on this subject based on the ideXlab platform.
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improving photofermentative Biohydrogen production by using intermittent ultrasonication and combined industrial effluents from palm oil pulp and paper mills
Energy Conversion and Management, 2017Co-Authors: Pretty Mori Budiman, Ramakrishnan Nagasundara Ramanan, Jamaliah Md JahimAbstract:Abstract An ultrasonication technique was applied intermittently onto photofermentation broth during the first six hours of photofermentation to improve Biohydrogen production by using Rhodobacter sphaeroides NCIMB8253. In this research, photofermentation broth consisted of a combination of palm oil (25%, v/v), pulp and paper (75%, v/v) mill effluents as well as liquid inoculum. The effects of amplitude (10, 20 and 30%, A) and ultrasonication duration (5, 10 and 15 min, T) were investigated in terms of their influences on photofermentative Biohydrogen yield and total chemical oxygen demand (COD total ) removal. The recommended ultrasonication parameters were found at the middle range of amplitude and duration (A20T10). Using A20T10 intermittent treatment, the production of Biohydrogen could be maximized up to 14.438 mL H 2 /mL medium with a COD total removal and light efficiency of 52.2% and 7.412%, respectively. By comparing the treatment without intermittent ultrasonication, an increase of Biohydrogen yield by 44.6% was achieved in A20T10 treatment. A total energy input of 306.1 J/mL (A20T10 treatment) was supplied to improve substrate consumption and light distribution during the photofermentation, which led to the increase of Biohydrogen yield.
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reusing pulp and paper mill effluent as a bioresource to produce Biohydrogen through ultrasonicated rhodobacter sphaeroides
Energy Conversion and Management, 2016Co-Authors: Jacqueline Xiao Wen Hay, Joon Ching Juan, Jamaliah Md JahimAbstract:Abstract Pulp and paper industry is a water-intensive industry. This industry commonly produces considerable amount of effluent, especially from virgin raw materials processing. The effluent, namely pulp and paper mill effluent has the potential to adversely affect the receiving watercourses. However, the nutrients in the pulp and paper mill effluent could be reused as a substrate in Biohydrogen production. In this study, photofermentative Biohydrogen production was investigated using Rhodobacter sphaeroides and pulp and paper mill effluent as a substrate. An application of low power ultrasound on R. sphaeroides was predicted to increase photofermentative Biohydrogen production but excessive ultrasound effects might inhibit the production due to possible cell disruption. Hence, various ultrasonication duration (5, 10 and 15 min) and amplitude (15%, 30% and 45%) were applied on the bacteria to determine the recommended ultrasonication conditions for improving Biohydrogen production. The recommended conditions were operated at ultrasonication amplitude and duration of 30% and 10 min, respectively. A maximum Biohydrogen yield of 9.62 mL bioH 2 /mL medium was obtained under this condition, which was 66.7% higher than the result obtained using R. sphaeroides without undergoing ultrasonication (control). The light efficiency and cell concentration were increased by 67% and 150%, respectively, using ultrasonication amplitude and duration of 30% and 10 min, respectively as compared to the control. The present results demonstrated that moderate power of ultrasonication applied on R. sphaeroides was an effective method for enhancing photofermentative Biohydrogen production using raw pulp and paper mill effluent as a bioresource.
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Biohydrogen production through photo fermentation or dark fermentation using waste as a substrate overview economics and future prospects of hydrogen usage
Biofuels Bioproducts and Biorefining, 2013Co-Authors: Ta Yeong Wu, Joon Ching Juan, Jamaliah Md JahimAbstract:Hydrogen has been introduced as a potential replacement for energy resource due to the depletion of fossil fuel and raising awareness about global climate change and health problems caused by the combustion of fossil fuel. One of the attractive options to produce hydrogen is through microbial fermentation which can be classified into biophotolysis, dark fermentation, photofermentation, and microbial electrolysis cell. Among these, dark fermentation and photofermentation technologies were processes that were being studied widely. One of the reasons is that organic waste could be reused as a substrate during Biohydrogen production. Although the current Biohydrogen yields are low, it is expected that with improvements technology and genetic engineering, the amount of generated Biohydrogen could be enhanced tremendously, and provide a sustainable way of reutilizing waste as a substrate. Thus, this paper reviews the principles of photofermentation and dark fermentation by reusing various wastes as substrates. The resulting performances, limitations, as well as future prospects of hydrogen usage and hydrogen economy are also discussed. © 2013 Society of Chemical Industry and John Wiley & Sons, Ltd
Giovanni Esposito - One of the best experts on this subject based on the ideXlab platform.
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Production of biohythane from food waste via an integrated system of continuously stirred tank and anaerobic fixed bed reactors
Bioresource Technology, 2016Co-Authors: Martha Minale Yeshanew, Luigi Frunzo, Piet N L Lens, Francesco Pirozzi, Giovanni EspositoAbstract:The continuous production of biohythane (mixture of Biohydrogen and methane) from food waste using an integrated system of a continuously stirred tank reactor (CSTR) and anaerobic fixed bed reactor (AFBR) was carried out in this study. The system performance was evaluated for an operation period of 200 days, by stepwise shortening the hydraulic retention time (HRT). An increasing trend of Biohydrogen in the CSTR and methane production rate in the AFBR was observed regardless of the HRT shortening. The highest Biohydrogen yield in the CSTR and methane yield in the AFBR were 115.2 (±5.3) L H2/kgVSaddedand 334.7 (±18.6) L CH4/kgCODadded, respectively. The AFBR presented a stable operation and excellent performance, indicated by the increased methane production rate at each shortened HRT. Besides, recirculation of the AFBR effluent to the CSTR was effective in providing alkalinity, maintaining the pH in optimal ranges (5.0–5.3) for the hydrogen producing bacteria.
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A review on dark fermentative Biohydrogen production from organic biomass: Process parameters and use of by-products
Applied Energy, 2015Co-Authors: Anish Ghimire, Luigi Frunzo, Piet N L Lens, Renaud Escudie, Francesco Pirozzi, Eric Trably, Giovanni EspositoAbstract:Dark fermentation of organic biomass, i.e. agricultural residues, agro-industrial wastes and organic municipal waste is a promising technology for producing renewable Biohydrogen. In spite of its potential, this technology needs further research and development to improve the Biohydrogen yield by optimizing substrate utilization, microbial community enrichment and bioreactor operational parameters such as pH, temperature and H2 partial pressure. On the other hand, the technical and economic viability of the processes need to be enhanced by the use of valuable by-products from dark fermentation, which mostly includes volatile fatty acids. This paper reviews a range of different organic biomasses and their Biohydrogen potential from laboratory to pilot-scale systems. A review of the advances in H2 yield and production rates through different seed inocula enrichment methods, bioreactor design modifications and operational conditions optimization inside the dark fermentation bioreactor is presented. The prospects of valorizing the co-produced volatile fatty acids in photofermentation and bioelectrochemical systems for further H2 production, methane generation and other useful applications have been highlighted. A brief review on the simulation and modeling of the dark fermentation processes and their energy balance has been provided. Future prospects of solid state dark fermentation are discussed.
Noraini Abdul Rahman - One of the best experts on this subject based on the ideXlab platform.
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food waste and food processing waste for Biohydrogen production a review
Journal of Environmental Management, 2013Co-Authors: Nazlina Haiza Mohd Yasin, Mohd Ali Hassan, Tabassum Mumtaz, Noraini Abdul RahmanAbstract:Abstract Food waste and food processing wastes which are abundant in nature and rich in carbon content can be attractive renewable substrates for sustainable Biohydrogen production due to wide economic prospects in industries. Many studies utilizing common food wastes such as dining hall or restaurant waste and wastes generated from food processing industries have shown good percentages of hydrogen in gas composition, production yield and rate. The carbon composition in food waste also plays a crucial role in determining high Biohydrogen yield. Physicochemical factors such as pre-treatment to seed culture, pH, temperature (mesophilic/thermophilic) and etc. are also important to ensure the dominance of hydrogen-producing bacteria in dark fermentation. This review demonstrates the potential of food waste and food processing waste for Biohydrogen production and provides a brief overview of several physicochemical factors that affect Biohydrogen production in dark fermentation. The economic viability of Biohydrogen production from food waste is also discussed.
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effects of ph glucose and iron sulfate concentration on the yield of Biohydrogen by clostridium butyricum eb6
International Journal of Hydrogen Energy, 2009Co-Authors: Mei Ling Chong, Yoshihito Shirai, Noraini Abdul Rahman, Phang Lai Yee, Suraini Abd Aziz, Raha Abdul Rahim, Mohd Ali HassanAbstract:A local bacterial isolate from palm oil mill effluent (POME) sludge, identified as Clostridium butyricum EB6, was used for Biohydrogen production. Optimization of Biohydrogen production was performed via statistical analysis, namely response surface methodology(RSM), with respect to pH, glucose and iron concentration. The results show that pH, glucose concentration and iron concentration significantly influenced the Biohydrogen gas production individually, interactively and quadratically (P < 0.05). The center composite design (CCD) results indicated that pH 5.6, 15.7 g/L glucose and 0.39 g/L FeSO4 were the optimal conditions for Biohydrogen production, yielding 2.2 mol H2/mol glucose. In confirmation of the experimental model, t-test results showed that curve fitted to the experimental data had a high confidence level, at 95% with t ¼ 2.225. Based on the results of this study, optimization of the culture conditions for C. butyricum EB6 significantly increased the production of Biohydrogen.
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start up of Biohydrogen production from palm oil mill effluent under non sterile condition in 50 l continuous stirred tank reactor
International Journal of Approximate Reasoning, 2009Co-Authors: Mohd Zulkhairi Mohd Yusoff, Mohd Ali Hassan, Suraini Abdaziz, Noraini Abdul RahmanAbstract:Feasibility study of Biohydrogen production from Palm Oil Mill Effluent (POME) using POME sludge as a mixed culture of natural inoculum was conducted. The experiment was done using a 150 mL serum bottle and 50 L Continuous Stirred Tank Reactor (CSTR) in batch and continuous modes, respectively. The biogas produced from both fermentations was free from methane due to heat treatment of the sludge prior to inoculation. The results obtained showed that the Biohydrogen content in 150 mL serum bottle was higher (70%) than that of 50 L CSTR (25%). The Biohydrogen rates for serum bottle and 50 L bioreactor were 74 and 33 NmL/h/L, respectively. Butyrate, propionate and acetate were the main soluble metabolites produced during the fermentation and reduced the pH of broth.
Mohd Ali Hassan - One of the best experts on this subject based on the ideXlab platform.
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food waste and food processing waste for Biohydrogen production a review
Journal of Environmental Management, 2013Co-Authors: Nazlina Haiza Mohd Yasin, Mohd Ali Hassan, Tabassum Mumtaz, Noraini Abdul RahmanAbstract:Abstract Food waste and food processing wastes which are abundant in nature and rich in carbon content can be attractive renewable substrates for sustainable Biohydrogen production due to wide economic prospects in industries. Many studies utilizing common food wastes such as dining hall or restaurant waste and wastes generated from food processing industries have shown good percentages of hydrogen in gas composition, production yield and rate. The carbon composition in food waste also plays a crucial role in determining high Biohydrogen yield. Physicochemical factors such as pre-treatment to seed culture, pH, temperature (mesophilic/thermophilic) and etc. are also important to ensure the dominance of hydrogen-producing bacteria in dark fermentation. This review demonstrates the potential of food waste and food processing waste for Biohydrogen production and provides a brief overview of several physicochemical factors that affect Biohydrogen production in dark fermentation. The economic viability of Biohydrogen production from food waste is also discussed.
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effects of ph glucose and iron sulfate concentration on the yield of Biohydrogen by clostridium butyricum eb6
International Journal of Hydrogen Energy, 2009Co-Authors: Mei Ling Chong, Yoshihito Shirai, Noraini Abdul Rahman, Phang Lai Yee, Suraini Abd Aziz, Raha Abdul Rahim, Mohd Ali HassanAbstract:A local bacterial isolate from palm oil mill effluent (POME) sludge, identified as Clostridium butyricum EB6, was used for Biohydrogen production. Optimization of Biohydrogen production was performed via statistical analysis, namely response surface methodology(RSM), with respect to pH, glucose and iron concentration. The results show that pH, glucose concentration and iron concentration significantly influenced the Biohydrogen gas production individually, interactively and quadratically (P < 0.05). The center composite design (CCD) results indicated that pH 5.6, 15.7 g/L glucose and 0.39 g/L FeSO4 were the optimal conditions for Biohydrogen production, yielding 2.2 mol H2/mol glucose. In confirmation of the experimental model, t-test results showed that curve fitted to the experimental data had a high confidence level, at 95% with t ¼ 2.225. Based on the results of this study, optimization of the culture conditions for C. butyricum EB6 significantly increased the production of Biohydrogen.
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Biohydrogen production from biomass and industrial wastes by dark fermentation
International Journal of Hydrogen Energy, 2009Co-Authors: Mei Ling Chong, Vikineswary Sabaratnam, Yoshihito Shirai, Mohd Ali HassanAbstract:Hydrogen is a clean energy carrier which has a great potential to be an alternative fuel. Abundant biomass from various industries could be a source for Biohydrogen production where combination of waste treatment and energy production would be an advantage. This article summarizes the dark fermentative Biohydrogen production from biomass. Types of potential biomass that could be the source for Biohydrogen generation such as food and starch-based wastes, cellulosic materials, dairy wastes, palm oil mill effluent and glycerol are discussed in this article. Moreover, the microorganisms, factors affecting Biohydrogen production such as undissociated acid, hydrogen partial pressure and metal ions are also discussed.
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start up of Biohydrogen production from palm oil mill effluent under non sterile condition in 50 l continuous stirred tank reactor
International Journal of Approximate Reasoning, 2009Co-Authors: Mohd Zulkhairi Mohd Yusoff, Mohd Ali Hassan, Suraini Abdaziz, Noraini Abdul RahmanAbstract:Feasibility study of Biohydrogen production from Palm Oil Mill Effluent (POME) using POME sludge as a mixed culture of natural inoculum was conducted. The experiment was done using a 150 mL serum bottle and 50 L Continuous Stirred Tank Reactor (CSTR) in batch and continuous modes, respectively. The biogas produced from both fermentations was free from methane due to heat treatment of the sludge prior to inoculation. The results obtained showed that the Biohydrogen content in 150 mL serum bottle was higher (70%) than that of 50 L CSTR (25%). The Biohydrogen rates for serum bottle and 50 L bioreactor were 74 and 33 NmL/h/L, respectively. Butyrate, propionate and acetate were the main soluble metabolites produced during the fermentation and reduced the pH of broth.