Article
Biotechnology & Applied Microbiology
Hairui Ji, Le Wang, Furong Tao, Zhipeng Yao, Xuezhi Li, Cuihua Dong, Zhiqiang Pang
Summary: In this study, a recyclable hydrotrope, p-Toluenessulfonic acid (p-TsOH), was used to dissolve lignin and stabilize it with formaldehyde (FA) during extraction. This allowed for value-added lignin extraction and efficient enzymatic saccharification of cellulose. The pretreated substrate was then converted to ethanol via a quasi-simultaneous saccharification and fermentation process (Q-SSF), resulting in a high ethanol yield.
BIORESOURCES AND BIOPROCESSING
(2022)
Article
Agricultural Engineering
Xinyu Huang, Meishan Fan, Jun Xie, Chunmei Zhong, Hongdan Zhang
Summary: This study proposed AlCl3-catalyzed organosolv pretreatment with different temperatures to disrupt the recalcitrant structure of poplar, improving ethanol conversion. The increment of pretreatment temperature increased the ethanol concentration. The comparison between batch and fed-batch SSF showed different ethanol concentrations and yields under different solid loading conditions.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Green & Sustainable Science & Technology
Guannan Shen, Xinchuan Yuan, Sitong Chen, Shuangmei Liu, Mingjie Jin
Summary: This study investigated a novel and cost-effective pretreatment method, DLCA, for sugarcane bagasse (SCB) to enhance its cellulosic ethanol production. The results showed that DLCA(sa)-SCB had high enzymatic digestibility and fermentability, and the simultaneous saccharification and co-fermentation (SSCF) process achieved a high ethanol titer. This study presents a promising approach for efficient bioconversion of SCB into ethanol.
Article
Agricultural Engineering
Afrasiab Khan Tareen, Imrana Niaz Sultan, Kiettipong Songprom, Nikhom Laemsak, Sarote Sirisansaneeyakul, Wirat Vanichsriratana, Pramuk Parakulsuksatid
Summary: The study investigated the production of ethanol from oil palm trunk chips using steam explosion, alkaline extraction, and fermentation. The optimized two-step pretreatment process showed efficient ethanol production.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Shereena P. Joy, Chandraraj Krishnan
Summary: The study demonstrates that pretreatment with ammoniacal glycerol can significantly improve saccharification efficiency and ethanol yield from sorghum biomass, benefiting both biodiesel and bioethanol industries.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Agricultural Engineering
Ankita Juneja, Bert Noordam, Herman Pel, Rahul Basu, Maaike Appeldoorn, Vijay Singh
Summary: Optimized two-stage pretreatment conditions convert corn fiber into fermentable sugars with high yields of glucose, xylose, and arabinose after hydrolysis. Using engineered yeast for SSF results in higher ethanol concentrations, while also increasing the protein content in the residual solid.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Rui Zhao, Hongshen Li, Qi Li, Zefang Jia, Shizhong Li, Ling Zhao, Shan Li, Yuwei Wang, Wenxin Fan, Ruoqi Ren, Zitong Yuan, Mengchan Yang, Xiaomei Wang, Xin Zhao, Weihua Xiao, Jian Zhao, Limin Cao
Summary: Developing a reliable lignocellulose pretreatment method and engineering efficient strains capable of utilizing xylose are crucial for advancing cellulosic ethanol production. This study found that alkali cooking can effectively remove lignin from lignocellulose crops. The genetically engineered yeast strain Delta snR4 demonstrated excellent performance in different solid loading conditions, making it a potential candidate for industrial cellulosic ethanol production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Green & Sustainable Science & Technology
Maryam Molaverdi, Keikhosro Karimi, Safoora Mirmohamadsadeghi, Mats Galbe
Summary: Sodium carbonate pretreatment can improve ethanol concentration at high solids and low enzyme loadings, and steam pretreatment can further increase ethanol concentration on this basis.
Article
Chemistry, Applied
Meishan Fan, Caiqun Li, Tao Dai, Li Liu, Hongdan Zhang, Jun Xie
Summary: A combinatorial pretreatment process with liquid hot water (LHW) and sodium hydroxide was explored for ethanol production. The results showed that 200°C LHW combined with 1% NaOH achieved the highest ethanol yield of 50.90% and ethanol concentration of 22.71 g/L, which was attributed to the removal of hemicellulose and delignification. The study also analyzed the key factors related to biomass recalcitrance and found that an increased cellulose crystallinity index (CrI)/accessibility and decreased cellulose degree of polymerization (DP) improved fermentation yield.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Franco Foglia, Caye Drapcho, John Nghiem
Summary: This study found that the removal of tannins from sorghum through alkaline treatment significantly increased ethanol yield, and the addition of cellulase further improved ethanol production.
FERMENTATION-BASEL
(2022)
Article
Agricultural Engineering
Jikai Zhao, Yang Yang, Meng Zhang, Charles W. Rice, Donghai Wang
Summary: The effects of switchgrass particle sizes on the effectiveness of H2SO4 and NaOH pretreatments were investigated. Increasing particle size led to higher contents of glucan, xylan, and lignin in raw switchgrass. SEM images and FTIR spectra showed no visible variations in microstructures and chemical bonds among different particle sizes under the same pretreatment conditions. The optimal ethanol conversion performance depends on the interaction between the pretreatment method and biomass particle size.
BIOMASS & BIOENERGY
(2022)
Article
Biochemistry & Molecular Biology
Grzegorz Klosowski, Dawid Mikulski, Prashant Bhagwat, Santhosh Pillai
Summary: This study evaluated the effect of microwave-assisted pretreatment with NaCS on the production of second-generation bioethanol, showing that this pretreatment method effectively reduced lignin content and hemicellulose, increasing cellulose content in the biomass which led to higher ethanol yield.
Article
Agricultural Engineering
Qingfeng Wang, Xuesong Tan, Wen Wang, Changlin Miao, Yongming Sun, Zhenhong Yuan, Xinshu Zhuang
Summary: In this study, a cellulose ethanol production method was developed by alkaline pretreatment and enzymatic hydrolysis, which allows direct conversion of treated bagasse into ethanol. The method enables zero discharge of black liquor and wastewater, making it a potential candidate for industrial applications.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Thermodynamics
Ibrahim Alper Basar, Nuriye Altinay Perendeci
Summary: In this study, an environmentally friendly version of hydrogen peroxide - acetic acid (HPAC) pretreatment was developed and optimized for maximum bio-fuel production and cost optimization. Experimental design using central composite design and response surface method revealed that significant ethanol production enhancement was observed at 100 degrees C. The optimal conditions for maximum ethanol production were found to be 2% H2O2, 0% HAc, 24 h, and 100 degrees C, while maximum methane production was observed at 2% HAc, 0% H2O2, 100 degrees C, and 6 h. Additionally, the cost-optimal pretreatment conditions were identified as 1.87% HAc, 0% H2O2, 50 degrees C, and 6 h with 67.5% energy recovery.
Article
Green & Sustainable Science & Technology
P. Y. S. Nakasu, T. C. Pin, J. P. Hallett, S. C. Rabelo, A. C. Costa
Summary: Protic ionic liquids (PILs) are efficient pretreatment agents for lignocellulosic biomass deconstruction to produce ethanol. Optimal conditions for pretreatment include 2 hours, 150 degrees Celsius, 15% solids loading, and 20% water content. The addition of hemicellulases during saccharification can improve hemicellulose yield, while the use of ethanol and other antisolvents does not increase sugar yields.
Article
Energy & Fuels
Ferdian Wirawan, Chieh-Lun Cheng, Yung-Chung Lo, Chun-Yen Chen, Jo-Shu Chang, Shao-Yuan Leu, Duu-Jong Lee
Article
Agricultural Engineering
Jia-Hsun Lu, Chuan Chen, Chihpin Huang, Huichuan Zhuang, Shao-Yuan Leu, Duu-Jong Lee
BIORESOURCE TECHNOLOGY
(2020)
Correction
Biotechnology & Applied Microbiology
Ying Wang, Ka-Lai Chan, Mohamed Ali Abdel-Rahman, Kenji Sonomoto, Shao-Yuan Leu
BIOTECHNOLOGY FOR BIOFUELS
(2020)
Article
Biotechnology & Applied Microbiology
Ying Wang, Ka-Lai Chan, Mohamed Ali Abdel-Rahman, Kenji Sonomoto, Shao-Yuan Leu
BIOTECHNOLOGY FOR BIOFUELS
(2020)
Article
Biotechnology & Applied Microbiology
Ka-Lai Chan, Chun-Han Ko, Ken-Lin Chang, Shao-Yuan Leu
Summary: Enzymatic hydrolysis is a rate-limiting process in lignocellulose biorefinery, but a kinetic model incorporating dynamic enzyme adsorption and product inhibition parameters has been developed in this study to improve simulation accuracy. The model provided numerical proof quantifying the beneficial effects of additives, which improved the hydrolysis rate by reducing nonproductive enzyme adsorption on lignin.
BIOTECHNOLOGY AND BIOENGINEERING
(2021)
Article
Engineering, Environmental
Chi Shun Yeung, Ho-Yin Tse, Chun Yin Lau, Jianyu Guan, Jinqing Huang, David Lee Phillips, Shao-Yuan Leu
Summary: In this study, femtosecond transient absorption (fs-TA) spectroscopy experiments were used to investigate the photochemistry of tribromoacetic acid, revealing a photoisomerization intermediate species and its reaction mechanism with water, predicting three major photoproducts. The results provided insights on the photodecomposition and subsequent reactions of polyhalo-DPBs containing heavy atoms, such as bromine and iodine, with water or other nucleophiles.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Noman Khalid Khanzada, Bhaskar Jyoti Deka, Jehad A. Kharraz, Pak Wai Wong, David Jassby, Shazia Rehman, Shao-Yuan Leu, Manish Kumar, Alicia Kyoungjin An
Summary: The modification of reverse osmosis (RO) membranes with graphene oxide (GO) using polydopamine (PDA) crosslinking agent improves NDMA rejection and antibiofouling performance, making it an effective method for water reclamation.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Environmental
Shazia Rehman, Ling Leng, Huichuan Zhuang, Arun K. Vuppaladadiyam, Carol Sze Ki Lin, Shao-Yuan Leu
Summary: In this study, a novel Enterococcus faecalis strain OPS2 was isolated from palm oil-polluted soil, which showed high-xylose tolerance and desirable 2,3-BDO production. Whole-genome sequencing analysis revealed the metabolic pathways and identified genes related to xylose utilization and 2,3-BDO production. OPS2 showed better performance than OPS1, providing genomic insights for industrial implication as a microbial biocatalyst in a 2,3-BDO biorefinery.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Jianyu Guan, Huichuan Zhuang, Chun Yin Lau, Ling Leng, Chi Shun Yeung, Arun Krishna Vuppaladadiyam, Huaimin Wang, Ho-Yin Tse, Shao-Yuan Leu
Summary: Household food waste management is an emerging environmental issue impacting sustainable urban development. In-sink domestic food waste disposers have gained attention for their simplified waste handling and reduced household expenses. However, mixing food waste in the sewer system may lead to lower aeration efficiency and increased greenhouse gas emissions during wastewater treatment processes.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Engineering, Environmental
Qing Xu, Sha Long, Xuran Liu, Abing Duan, Mingling Du, Qi Lu, Ling Leng, Shao-Yuan Leu, Dongbo Wang
Summary: This review emphasizes the importance of recovering biomass energy from food waste through anaerobic digestion as an alternative to fossil energy. It discusses the occurrence and fate of food additives in anaerobic digestion, as well as their biotransformation pathways and effects on methane production. The potential impact of food additives on antibiotic resistance genes and strategies for mitigating their effects are also highlighted. This review aims to advance our understanding and optimize anaerobic digestion of organic solid waste.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Chen Li, Dan-Dong Wang, Gerald Siu Hang Poon Ho, Zhengyang Zhang, Jun Huang, Ki-Taek Bang, Chun Yin Lau, Shao-Yuan Leu, Yanming Wang, Yoonseob Kim
Summary: Lithium-metal batteries (LMBs) have the highest theoretical energy density, but safety concerns hinder their development. Covalent organic frameworks (COFs) with redox-active and anionic sites show promise as solid electrolyte interphases (SEIs) in LMBs. Researchers synthesized anthraquinone-based silicate COFs with both redox-active and anionic sites and used them as SEIs on the Li anode, achieving stable performance.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Environmental
Chenxi Li, Zijing Li, Xuran Liu, Mingting Du, Dandan He, Qizi Fu, Min Pan, Shao-Yuan Leu, Dongbo Wang
Summary: This study reports a new strategy to improve short-chain fatty acids (SCFA) production from anaerobic fermentation of waste activated sludge (WAS) by cetyltrimethylammonium bromide (CTAB) intervention. CTAB increased the yield and quality of SCFAs, improved the disintegration of WAS and the biodegradability of released organics, and altered the microbial community to favor SCFA accumulation. Economic analysis showed that CTAB intervention had comparable or higher economic benefits than traditional pretreatment approaches for WAS anaerobic fermentation.
ACS ES&T ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Ho-Yin Tse, Chi Shun Yeung, Chun Yin Lau, Man Yee Cheung, Jianyu Guan, Md Khairul Islam, Paul T. Anastas, Shao-Yuan Leu
Summary: This study presents a green, simple, and efficient one-pot synthesis approach for a sustainable lignin nanoparticle biosensor. The biosensor showed superior harnessing abilities for excited state proton transfer photochemical dynamics and demonstrated outstanding selectivity for bisulfite ions, a key indicator of asthma and lung cancer. This study highlights the potential of valorizing lignin and plant extracts for molecular device development and applications.
Article
Chemistry, Multidisciplinary
Raffel Dharma Patria, Md Khairul Islam, Liwen Luo, Shao-Yuan Leu, Sunita Varjani, Yunjie Xu, Jonathan Woon-Chung Wong, Jun Zhao
Summary: The study demonstrates the successful production and application of a cost-effective catalyst for the isomerization of glucose to fructose using food waste digestate. The hydroxyapatite-based catalyst obtained by coupled hydrothermal-calcination approach showed excellent catalytic performance, achieving a high fructose yield of 32.3% with simple regeneration for reuse.
GREEN SYNTHESIS AND CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Chengyu Dong, Xianzhi Meng, Chi Shun Yeung, Ho-Yin Tse, Arthur J. Ragauskas, Shao-Yuan Leu
