Article
Biotechnology & Applied Microbiology
Maria Dolores Pendon, Jose V. Madeira, David E. Romanin, Martin Rumbo, Andreas K. Gombert, Graciela L. Garrote
Summary: The study demonstrates that K. marxianus CIDCA 9121 efficiently ferments lactose in whey permeate to ethanol, while the remaining yeast biomass has probiotic properties, enabling an integrated process for obtaining whey protein, fuel ethanol, and probiotics from cheese whey.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Antoine Moenaert, Ana M. Lopez-Contreras, Miriam Budde, Leila Allahgholi, Xiaoru Hou, Anne-Belinda Bjerre, Johann Orlygsson, Eva Nordberg Karlsson, Olafur H. Friojonsson, Guomundur Oli Hreggviosson
Summary: This study compares the microbial production of alcohols from fermentable carbohydrates in the hydrolysate of macroalgae. Different microorganisms were tested for their fermentation properties, and it was found that they showed different characteristics and product profiles. The study provides important information for selecting efficient microbes for bioconversion into biofuels and chemical products.
FERMENTATION-BASEL
(2023)
Article
Engineering, Environmental
E. Trigueros, P. Alonso-Riano, C. Ramos, C. I. K. Diop, S. Beltran, M. T. Sanz
Summary: The valorization of underexploited solid residue from red marine algae after agar extraction was studied through subcritical water treatment. The use of by-pass section allowed for pre-heating the water and avoiding exposure to high temperatures, leading to higher hydrolysis yields. Increasing flow rate led to higher initial hydrolysis rates due to enhanced diffusion of hydrolysis products, with different effects on carbohydrate fractions and protein fractions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Biotechnology & Applied Microbiology
Ester Trigueros, M. Teresa Sanz, Patricia Alonso-Riano, Sagrario Beltran, Cipriano Ramos, Rodrigo Melgosa
Summary: The valorization of industrial solid residue from Gelidium sesquipedale after agar extraction using subcritical water was investigated, revealing high protein content with essential amino acids, a significant carbohydrate fraction, and a substantial amount of ash. The study focused on optimizing protein and carbon fraction extraction/hydrolysis through varying temperature and flow rate, with a key finding that higher temperatures led to degradation of protein. Additionally, the study established a correlation between antioxidant capacity and bioactive compounds in the extracts, with potential applications of the solid residue as fertilizers in agriculture.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Thermodynamics
Simin Shokrollahi, Joeri F. M. Denayer, Keikhosro Karimi
Summary: This study investigated the potential of date palm residues as a source of biomethane and bioethanol production in arid regions. Pretreatment with concentrated phosphoric acid resulted in a cellulose-rich solid fraction and a hemicellulose-rich liquor. Two scenarios were followed, with the first scenario producing methane from the pretreated solid and liquor, and the second scenario producing ethanol from the pretreated solid and methane from the liquor. The second scenario was recommended for the biorefining of date palm residues.
Article
Thermodynamics
Abid Farooq, Soheil Valizadeh, Gwang Hoon Rhee, Jechan Lee, Jungho Jae, Sang-Chul Jung, Wei-Hsin Chen, Young-Kwon Park
Summary: Catalytic pyrolysis of furniture industry processed residue over HZSM-5 under methane decomposition gas has been found to be an environmentally friendly and sustainable strategy for producing valuable aromatics for fuel applications.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Review
Energy & Fuels
Millicent Rosette Wan Yi Chung, Inn Shi Tan, Henry Chee Yew Foo, Man Kee Lam, Steven Lim
Summary: This review paper discusses the importance of polylactic acid (PLA) and lactic acid (LA) in the production of biodegradable plastics. It explores the recent technological advancements and challenges in LA production, focusing on the potential of macroalgae biomass as a substrate. The economic and environmental sustainability of macroalgae biomass is evaluated using engineering tools such as life cycle assessment and exergy analysis.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Engineering, Environmental
Andreas Christofi, Dionysis Tsipiras, Dimitris Malamis, Konstantinos Moustakas, Sofia Mai, Elli Maria Barampouti
Summary: The orange juice industry produces a large amount of waste, which can be utilized as animal feed or for biogas and bioethanol production. Fresh orange waste has the highest energy yield, while pressed orange waste and silage have lower energy yields. By using enzymatic hydrolysis and ethanolic fermentation, fresh orange waste can produce a higher energy output.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Biotechnology & Applied Microbiology
Teeraya Jarunglumlert, Chattip Prommuak
Summary: Co-production is a process that maximizes biomass utilization by reusing production waste to produce other products. Research has shown that converting ethanol stillage into biogas through anaerobic digestion can significantly increase energy output and reduce the minimum ethanol selling price, making industrial-scale cellulosic ethanol production more feasible.
FERMENTATION-BASEL
(2021)
Article
Materials Science, Paper & Wood
Amina Allouache, Aziza Majda, Ahmed Zaid Toudert, Abdeltif Amrane, Mercedes Ballesteros
Summary: Biofuels have become an essential solution to fossil fuel depletion and global warming, with the third generation focusing on marine and freshwater biomass to avoid harm to arable land and edible products. Ulva lactuca, a local marine macroalgae, shows promise for bioethanol production due to its carbohydrate-rich content and high energetic potential.
CELLULOSE CHEMISTRY AND TECHNOLOGY
(2021)
Article
Energy & Fuels
Daniel G. Gomes, Michele Michelin, Aloia Romani, Lucilia Domingues, Jose A. Teixeira
Summary: In this study, hydrothermal treatment was used to fractionate industrial Eucalyptus globulus bark residue for biofuels and value-added compounds. The highest glucose yield of 84% was achieved at a severity factor of 4.04, resulting in a 4.38-fold improvement in enzymatic saccharification of cellulose. Esteemed strategies for bio-ethanol production included simultaneous saccharification and fermentation (SSF) and pre-saccharification and simultaneous saccharification and fermentation (PSSF).
Article
Engineering, Environmental
Daiana Trape, Fernando D. Ramos, Olivia Lopez, Ma Soledad Diaz, Marcelo A. Villar
Summary: This study evaluated the feasibility of incorporating a PHA production process into a bioethanol plant, finding that it can generate economic benefits and reduce environmental impact. Sensitivity analysis on different parameters revealed that polymer accumulation and PHA selling price are the most significant factors.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Green & Sustainable Science & Technology
Eun Jin Cho, Yoon Gyo Lee, Younho Song, Ha Yeon Kim, Dinh-Truong Nguyen, Hyeun-Jong Bae
Summary: The study explores the conversion of textile waste materials into value-added chemicals through enzymatic hydrolysis and fermentation. Effective pretreatment methods were developed for different types of textile waste to enhance the efficiency of enzymatic saccharification. The results showed high glucose yields and increased digestibility of cellulose in the waste materials. The sugar content produced via enzymatic hydrolysis was converted into key platform chemicals through fermentation or hydrogenation. The integrated biorefinery process demonstrated significant potential for valorization of textile waste.
ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY
(2023)
Article
Energy & Fuels
Bo Chen, Zhitong Yao, Changwei Zhang, Shikun Cheng, Mengying Zhu, Yankun Wang, Yilu Wu, Hui Cao, Ian Watson, Di Cai
Summary: In this study, bagasse ash (BA) recovered from the biorefinery process was used as a catalyst in the co-pyrolysis of solid residue from a second-generation bioethanol plant with high-density polyethylene (HDPE). The co-pyrolytic behaviors and kinetics were investigated using thermogravimetric analyzer and model-free methods. The addition of BA increased the production yield and the average apparent active energy of co-pyrolysis was lower than that for catalyst-free pyrolysis. This novel co-pyrolysis process has great potential in improving the economic and environmental aspects of second-generation biorefineries.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Biotechnology & Applied Microbiology
Mohamed Gomaa, Arwa A. Al-Badaani, Awatief F. Hifney, Mahmoud S. Adam
Summary: This study successfully extracted cellulose from the green seaweed Ulva lactuca by optimizing different NaOH and NaClO2 treatments, achieving high yield and improved crystallinity for potential industrial applications.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Agricultural Engineering
Choi Yan Chai, Inn Shi Tan, Henry Chee Yew Foo, Man Kee Lam, Kevin Tian Xiang Tong, Keat Teong Lee
Summary: This study demonstrates the feasibility of using macroalgae waste to produce biodegradable plastics, with the advanced MAA pretreatment technology improving the digestibility of EDR and the yield of L-LA.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Kevin Tian Xiang Tong, Inn Shi Tan, Henry Chee Yew Foo, Adrian Chiong Yuh Tiong, Man Kee Lam, Keat Teong Lee
Summary: This study achieved efficient third-generation L-lactic acid production from Eucheuma denticulatum extract through microwave-assisted hydrolysis. Single-factor optimization showed that microwave-assisted dilute acid hydrolysis had higher performance in galactose production. Optimized fermentation conditions led to the highest L-LA yield at specific inoculum cell densities.
BIORESOURCE TECHNOLOGY
(2021)
Review
Energy & Fuels
Kevin Tian Xiang Tong, Inn Shi Tan, Henry Chee Yew Foo, Man Kee Lam, Steven Lim, Keat Teong Lee
Summary: This paper comprehensively reviews the potential and development of sustainable bioethanol and lactic acid derived from biomass, with a focus on macroalgae as a feedstock. The state-of-the-art hydrolysis and fermentation technologies using macroalgae are discussed in detail. The economic and environmental sustainability of macroalgae biomass is evaluated, providing a guideline for future research and industrial applications.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Biotechnology & Applied Microbiology
Kevin Tian Xiang Tong, Inn Shi Tan, Henry Chee Yew Foo, Pau Loke Show, Man Kee Lam, Mee Kee Wong
Summary: The transition to a circular biorefinery using microbial fuel cells (MFC) is urgently needed to reduce the carbon footprint caused by industrialization. Although MFC has great potential for integrated production of biochemicals and bioenergy, its high production costs and slow microbial kinetics have hindered commercialization. This review focuses on the use of macroalgal biomass as a substrate in the MFC system for L-lactic acid (L-LA) and bioelectricity generation, as well as the technological advancements in the MFC system. Recent investigations have shown that different anolyte in MFC can significantly enhance power density. This review also provides insights into the development of a macroalgal-based L-LA and bioelectricity circular biorefinery in the MFC system for future research directions.
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)