Article
Chemistry, Physical
E. R. Mikheeva, I. Katraeva, D. L. Vorozhtsov, D. A. Kovalev, A. A. Kovalev, V. S. Grigoriev, Yu Litti
Summary: The feasibility of continuous biohydrogen production from industrial wastewater through the dark fermentation process was evaluated in this study. The results showed that producing biohydrogen from confectionery wastewater is promising. The fluidized bed reactor achieved higher hydrogen yield and production rate under certain operating parameters.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Agricultural Engineering
Ahmad Hosseinzadeh, John L. Zhou, Ali Altaee, Donghao Li
Summary: This study used machine learning (ML) procedures to model and analyze H-2 production from wastewater during dark fermentation, and found that gradient boosting machine (GBM), support vector machine (SVM), random forest (RF), and AdaBoost were the most appropriate models. By optimizing the models with grid search and analyzing them deeply with permutation variable importance (PVI), the research identified the relative importance of process variables.
BIORESOURCE TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Muhammad Abdul Qyyum, Sherif Ismail, Shou-Qing Ni, Ihsanullah Ihsanullah, Rizwan Ahmad, Amin Khan, Ahmed Tawfik, Abdul-Sattar Nizami, Moonyong Lee
Summary: This article comprehensively evaluates recent reports on hydrogen production from wastewater and highlights fermentation as one of the most promising methods. The study found that the sequential dark/photo fermentation approach offers maximum hydrogen yield, but more pilot-scale studies are needed. Additionally, the current challenges in implementing and commercializing wastewater hydrogen production are emphasized.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Energy & Fuels
Jey-R S. Ventura, Saul M. Rojas, Ruby Lynn G. Ventura, Fidel Rey P. Nayve, Nacita B. Lantican
Summary: Fossil fuel consumption leads to resource depletion and climate change, prompting a global interest in alternative energy sources, with a focus on biological fermentation for hydrogen production. The Philippines' agricultural abundance positions it as a promising candidate for biohydrogen production from biomass, including various agricultural wastes.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Chemistry, Physical
Nusara Sinbuathong, Boonsong Sillapacharoenkul
Summary: Biohydrogen can be produced from starch factory wastewater and mixed microorganisms through dark fermentation. The efficiency of hydrogen production is influenced by the initial pH level during fermentation, with alkaline-treated bacteria showing higher yield and production rate. No methane gas was observed in the gas mixture produced throughout the study.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Swarnalatha Mailaram, Vivek Narisetty, Vivek V. Ranade, Vinod Kumar, Sunil K. Maity
Summary: This study presents a techno-economic feasibility study for microbial BDO production from brewers' spent grain, and suggests a feasible method both technically and economically. The application of pinch technology can reduce energy consumption and with the increase in BDO titer, the production cost is also reduced marginally.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Energy & Fuels
Chaoyang Lu, Guangtao Wang, Quanguo Zhang, Xudong Yang, Jicai Yu, Tao Liu, Francesco Petracchini, Zhiping Zhang, Yong Sun, Danping Jiang, Xiaoyu Liang, Yameng Li, Yang Zhang, Tian Zhang, Huan Zhang
Summary: Biorefinery technology contributes to the realization of the Paris Agreement, China's carbon peak and carbon neutralization. This study investigated the gas, liquid, and kinetic characteristics of four biorefinery methods using corn stover as the raw material. The results provide insights into the efficient utilization of biomass resources and a comprehensive evaluation of biorefinery technology.
Article
Agricultural Engineering
Gianmarco Mugnai, Luigimaria Borruso, Tanja Mimmo, Stefano Cesco, Vincenzo Luongo, Luigi Frunzo, Massimiliano Fabbricino, Francesco Pirozzi, Francesca Cappitelli, Federica Villa
Summary: This study found that lactate fermentation was the main route for H-2 production in mesophilic dark fermentation reactors treating olive mill wastewater. Conversion of lactate to butyrate via pyruvate generation was the key step for H-2 production. Complex interactions among lactate-, acetate-, and H-2-producing bacteria were identified as determining factors in the H-2 production routes.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Physical
E. R. Mikheeva, I. V. Katraeva, A. A. Kovalev, D. A. Kovalev, Yu. V. Litti
Summary: Pretreatment of confectionery wastewater using vortex layer apparatus (VLA) can enhance biodegradability and improve methane and hydrogen production in anaerobic digestion.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Tinku Casper D'Silva, Sameer Ahmad Khan, Subodh Kumar, Dushyant Kumar, Adya Isha, Saptashish Deb, Saurabh Yadav, Biju Illathukandy, Ram Chandra, Virendra Kumar Vijay, Paruchuri M. V. Subbarao, Zoltan Bagi, Kornel L. Kovacs, Liang Yu, Bhushan P. Gandhi, Kirk T. Semple
Summary: Green and clean hydrogen production has gained importance for sustainable renewable energy fuel needs. The dark fermentation (DF) process for biohydrogen production from organic wastes is environmentally friendly, energy-efficient, and cost-effective. This article explores the feasibility of transforming the DF process into a biorefinery system and discusses factors influencing its performance, as well as the need for downstream processes and hydrogen purification techniques. Furthermore, it highlights opportunities, challenges, and research directions for enhancing hydrogen yield and microbial metabolism, and analyzes the commercialization status and policy-level issues from the Indian perspective.
Article
Agricultural Engineering
Lois Regueira-Marcos, Raill Munoz, Octavio Garcia-Depraect
Summary: The effect of hydraulic retention time (HRT) on the continuous lactate-driven dark fermentation (LD-DF) of food waste (FW) was studied. The study also investigated the impact of feast/famine perturbations on the bioprocess. Decreasing the HRT from 24 to 16 and 12 hours led to changes in hydrogen production rate (HPR). The optimal HRT of 16 hours supported a HPR of 4.2 L H2/L-d. Feast/famine perturbations caused by 12-hour feeding interruptions resulted in a significant increase in HPR, reaching up to 19.2 L H2/L-d. However, the process stabilized at 4.3 L H2/L-d following the perturbation. Metabolite analysis confirmed the occurrence of LD-DF throughout the operation, with hydrogen production being positively correlated with lactate consumption and butyrate production. Overall, the LD-DF process for FW showed high sensitivity but resilience against temporary feast/famine perturbations, supporting high-rate HPRs under optimal HRTs.
BIORESOURCE TECHNOLOGY
(2023)
Article
Energy & Fuels
Satya Ranjan Das, Nitai Basak
Summary: Potato waste can be effectively used as a substrate for hydrogen production through combined dark and photo fermentation, with optimized conditions leading to a high hydrogen yield.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Environmental Sciences
Jerry Mechery, C. S. Praveen Kumar, V. Ambily, Abin Varghese, V. P. Sylas
Summary: In this study, pineapple waste was hydrolyzed into acidic and alkaline solutions and used for biohydrogen production with locally isolated bacterial strains. Bacillus altitudinis showed the highest biohydrogen yield of 836.33 +/- 48.02 mL H-2 from alkaline hydrolysate during the 96th hour of fermentation. Compared to acidic hydrolysates, alkaline hydrolysates exhibited a higher yield of hydrogen. The aim of this study was to convert waste biomass into energy by utilizing native bacterial communities' potential.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Energy & Fuels
Bilal Kazmi, Syed Ali Ammar Taqvi, Salman Raza Naqvi, Asif Ali Mirani, Muhammad Shahbaz, Muhammad Naqvi, Dagmar Juchelkov, Gaber E. Eldesoky
Summary: This study presents a conceptual model for producing biohydrogen from sunflower husks pellets and waste glycerol using Aspen Plus (R) simulation tool. The effects of temperature, steam to biomass rate, and CaO rate on the product gas are analyzed. Increasing the gasifier temperature from 600 to 750 degrees C increases H2 volume percentage to 92%. Optimizing steam to biomass rate and CaO to biomass rate also affects the volume % of H2 gas in the product gas. A CaO rate of 1.8:1 and a steam-to-biomass ratio of 1.75:1 produce high H2 content with a high heating value of gas. The total capital cost is $2.93 x 106, with a total operating cost of $14.58 x 106/yr.
Article
Agricultural Engineering
Siran Feng, Huu Hao Ngo, Wenshan Guo, Mohd Atiqueuzzaman Khan, Shicheng Zhang, Gang Luo, Yi Liu, Ding An, Xinbo Zhang
Summary: This study investigates the use of crude enzymes extracted from different fruit peels (orange, mandarin, and banana) to enhance biohydrogen production from synthetic swine wastewater. The results showed that dosing with crude enzymes significantly increased biohydrogen yield. Banana peel crude enzymes were found to be the most effective, improving biohydrogen yield by 97.41%. Overall, fruit peel-based crude enzymes are advantageous for higher biohydrogen production.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Physical
Tan-Trung Nguyen, Chen-Yeon Chu, Chung-Mao Ou
Summary: This study examines the continuous co-digestion of swine manure and pineapple waste using two-stage anaerobic reactors, focusing on hydraulic retention time (HRT) and substrate heat pre-treatment. The results show that a complete anaerobic co-digestion process can achieve optimal energy production and COD removal efficiency, while the two-stage co-digestion process significantly improves COD removal efficiency, hydrogen production rate, and net energy gains, thereby reducing fermentation time.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Van Giang Tran, Chen-Yeon Chu, Yuwalee Unpaprom, Rameshprabu Ramaraj, Tsung-Hsien Chen
Summary: This study investigated the effect of substrate concentration and hydraulic retention time on hydrogen production in a continuous anaerobic bioreactor using unhydrolyzed common reed. The optimal conditions for maximum hydrogen yield were found to be a substrate concentration of 50 g COD/L and a HRT of 12 hours.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Sopee Panin, Worajit Setthapun, Alicia Amelia Elizabeth Sinsuw, Hathaithip Sintuya, Chen-Yeon Chu
Summary: This study utilized enriched microflora to produce biohydrogen from vegetable residues through dark fermentation. Mashed onion substrate with bioreactor inoculum achieved the maximum hydrogen production within 7 days. The research suggests that utilizing enriched microflora for vegetable waste treatment is a potential pathway for green energy production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Shen-Shih Chiang, Le-Shu Chen, Chen-Yeon Chu
Summary: Hypertension is a common global illness, and precise blood pressure control can reduce complications. Camellia oleifera Abel and Camellia sinensis (Oolong tea) have antibacterial, antioxidant, and anti-inflammatory properties that can reduce oxidative stress and vascular remodeling, lowering blood pressure and decreasing the risk of cardiovascular disease.
Article
Energy & Fuels
Worapong Wongarmat, Alissara Reungsang, Sureewan Sittijunda, Chen-Yeon Chu
Summary: Optimizing the proportions of biogas effluent, sugarcane filter cake, and anaerobic sludge can achieve high methane yield without the need for inoculum. Evaluation of hydraulic retention time using a first-order kinetic model and semi-continuous fermentation in a continuous stirred tank reactor confirmed the impact of optimum proportions and HRT on methane production rate.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Engineering, Chemical
Adriano Palma, Chen-Yeon Chu, Francesco Petracchini, Mei-Ling Yeh, Cheng-Ting Wu, Yu-Chen Lai
Summary: Perennial woody crops can positively impact carbon balance by absorbing and storing carbon for several years; models with remote sensing data can help in monitoring greenhouse gas fluxes; a study compared carbon uptake of different cultivars in Taiwan and Italy using physiological process-based models.
Article
Engineering, Environmental
Alicia Amelia Elizabeth Sinsuw, Cynthia Erlita Wuisang, Chen-Yeon Chu
Summary: The study found that implementing the Symnergy model with a biogas production pilot plant in a rural community can enhance self-sustainability and have positive environmental and social impacts. Results showed that utilizing cow biowaste and wastewater from a slaughterhouse can lead to cost savings and additional income for villagers, while also benefiting the community through biofertilizer production and increased profits from selling chili.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Biochemistry & Molecular Biology
Kuan-Tseng Lee, Chen-Yeon Chu, Shen-Shih Chiang
Summary: The study revealed that LCP fruit powder has anti-dementia effects on A beta-induced Alzheimer's mice, improving learning and memory abilities while reducing oxidative stress, brain atrophy, and A beta plaque deposition.
Article
Environmental Sciences
Chen-Yeon Chu, Jin-Long Zheng, Tsung-Hsien Chen, Prakash Bhuyar
Summary: The study found that using an expired soft drink as a substrate in a packed-filter bioreactor, with a substrate concentration of 20 g total sugar/L and the packed filter placed at the half-height position of the reactor, resulted in optimal hydrogen production rate and yield. The predominant bacterial communities in this setup were Clostridium sp., Clostridium tyrobutyricum, and Bifidobacterium crudilactis. Furthermore, the packed-filter bioreactor demonstrated stable hydrogen production in high-strength organic effluent.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Chemistry, Physical
Doan-Thanh Ta, Chiu-Yue Lin, Thi-Minh-Ngoc Ta, Chen-Yeon Chu
Summary: A novel single-reactor system has been developed for co-production of H2 and CH4. The study shows that a short pH shock can regulate the H2/CH4 composition without significantly affecting biogas yield and COD removal.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Ming-Yan Shen, Chen-Yeon Chu, Chayanon Sawatdeenarunat, Prakash Bhuyar
Summary: The synthesis of polyhydroxyalkanoates (PHA) using mixed microbial cultures (MMC) was studied in three stages, and it was found that adding pyruvate can increase the yield of PHA, potentially contributing to commercial activities in treating high organic wastewater.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Physical
Ming-Yan Shen, Marco Torre, Chen-Yeon Chu, Patrizio Tratzi, Monica Carnevale, Francesco Gallucci, Valerio Paolini, Francesco Petracchini
Summary: This study investigates the effects of different ratios of food waste to seed digestate and pH values on biohydrogen production in an anaerobic reactor. The results show that cattle manure and chicken manure in the seed digestate can adapt to high concentrations of COD in food waste and increase biohydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Agricultural Engineering
Ponnambalam Sabarikirishwaran, Ming-Yan Shen, Rameshprabu Ramaraj, Yuwalee Unpaprom, Hsuan-Chen Wu, Chen-Yeon Chu
Summary: This study aimed to produce biomethane from E. coli fermenter effluent through anaerobic fermentation using wastewater treatment sludge, and optimized various factors affecting the anaerobic digestion process. The results showed that adjusting the pH to 6.5 significantly enhanced the inherent methanogenic homeostasis and increased biomethane production by 22%. 16S rRNA analysis and kinetic study were conducted to analyze microbial communities and model cumulative biomethane production.
BIOMASS & BIOENERGY
(2023)
Article
Agricultural Engineering
Jayen Aris Kriswantoro, Chen-Yeon Chu, Ting-Rui Chang, Hao-Jen Pai, Chih-Kai Chang, Yi-Pang Chiu
Summary: The aim of this study was to investigate the impact of thermal alkaline pretreatment and zinc acetate-catalyzed methanolysis on biogas production from bioplastic in anaerobic digestion. The pretreated bioplastic with MtOH-ZnOAc exhibited efficient solubilization and generated 205.7 ± 6.9 mL/g CODadded, surpassing thermal alkaline degradation. Mesophilic conditions resulted in over 79% higher biogas production compared to thermophilic conditions with pretreated bioplastic diluted by 30 times. The kinetic study demonstrated a correlation between cumulative biogas, production rate, and lag phase in both mono- and two-stage systems, with the two-stage system surpassing the mono-stage system in terms of biogas production.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Chen-Yeon Chu, Duc-Binh Nguyen, Vinh-Phuc Ha, Vinh-Dat Vuong, Yi-Hsin Chien, Thang Van Le
Summary: Electrophoretic deposition (EPD) is a potential process for fabricating high porosity thin films or complex surface coatings in perovskite photovoltaics. In this study, electrostatic simulation is used to optimize the EPD cell design for cathodic EPD of functionalized multiwalled carbon nanotubes (f-MWCNTs). The results of scanning electron microscopy (SEM) and atomic force microscopy (AFM) evaluate the similarity between the thin film structure and electric field simulation, revealing a higher roughness at the edge of the thin film compared to the center position. The study also demonstrates the positive charging and deposition of f-MWCNTs with low defect density and the adsorption/electrostatic attraction of aluminum atoms to interlayer defect positions of f-MWCNTs.
