Article
Chemistry, Applied
E. N. Vlasova, A. A. Porsin, P. Aleksandrov, A. L. Nuzhdin, G. A. Bukhtiyarova
Summary: The co-processing of RSO-SRGO mixture over Mo/Al2O3-CoMo/Al2O3-SAPO-11 and Mo/Al2O3-NiMo/Al2O3-SAPO-11 catalytic systems resulted in decreased cloud point of products as temperature increased, with differences observed in the behavior under varying pressure. The hydrogenated products produced over NiMo/Al2O3-SAP showed lower final boiling point values and aromatic content compared to those produced over CoMo/Al2O3-SAP catalyst. Unexpectedly, pressure had varied effects on cloud point and conversion of long chain alkanes in the hydrodeoxygenation of RSO.
Article
Energy & Fuels
E. N. Vlasova, A. A. Porsin, P. Aleksandrov, A. L. Nuzhdin, G. A. Bukhtiyarova
Summary: The co-hydroprocessing of SRGO and RSO mixture over the stacked bed sulfide catalytic system showed that temperature and pressure had a significant impact on product quality and n-C18H38 conversion. Increasing temperature from 350°C to 380°C led to a decrease in cloud point due to higher n-C18H38 conversion, while increasing pressure from 4.0 MPa to 7.0 MPa decreased n-C18H38 conversion. The presence of NH3 was found to inhibit hydrocracking/hydroisomerization reactions in the co-processing of RSO-SRGO mixtures.
Article
Chemistry, Applied
I Vazquez-Garrido, A. Lopez-Benitez, A. Guevara-Lara, G. Berhault
Summary: The addition of 1 mol% manganese to Al2O3 support has been shown to enhance the performance of NiMo catalysts for the hydroconversion of soybean oil, due to the stabilization of manganese oxide species aiding in the redispersion of the active phase.
Article
Energy & Fuels
Rafael Belo Duarte, Marcos Lucio Corazza, Joao Lourenco Castagnari Willimann Pimenta, Luiz Mario de Matos Jorge
Summary: A kinetic study of glycerol hydrodeoxygenation (HDO) on NiMo2C/Al2O3 and Al2O3 catalysts, prepared by sol-gel technique, was conducted at high glycerol concentration (95wt%) in a batch reactor, from 250 degrees C to 285 degrees C. The catalysts' structural and surface properties were characterized, and it was found that impregnation of alumina with Ni and Mo followed by carburization increased crystallite sizes and reduced total acidity. The reactions followed a zeroth order model and had no diffusion limitation. The main products were propanediols, ethylene glycol, long-chain molecules, as well as methane, ethane, and propane.
Article
Energy & Fuels
Robertus Dhimas Dhewangga Putra, Yanuar Philip Wijaya, Kevin J. Smith, Heather L. Trajano, Chang Soo Kim
Summary: A novel approach using hydrogen from glycerol aqueous phase reforming (APR) was conducted to upgrade Fast Pyrolysis Oil (FPO), improving its properties and increasing hydrocarbon yield.
Article
Energy & Fuels
Sasiradee Jantasee, Nattawut Rodtuk, Weerinda Mens, Chaiyan Chaiya
Summary: The characteristics of bio-oil derived from soybean meal were improved through hydrodeoxygenation using monometallic and bimetallic catalysts. The oxygen content was reduced and the heating value of the bio-oil increased. The Ni/gamma-Al2O3 catalyst was found to be more effective in reducing oxygen content and increasing the heating value.
Review
Chemistry, Physical
Mingyuan Zhang, Yulin Hu, Haoyu Wang, Haoyang Li, Xue Han, Yimin Zeng, Chunbao Charles Xu
Summary: Fast pyrolysis and hydrothermal liquefaction are considered promising technologies for liquid bio-fuel production, but the poor quality of crude bio-oils has limited their direct applications. Hydrotreatment such as hydrodeoxygenation is a common upgrading technique, and this review explores the effects of different reaction conditions on the HDO treatment of real bio-oil. The underlying mechanisms for bio-oil HDO, technical challenges, and potential solutions are discussed, along with knowledge gaps and future research directions.
MOLECULAR CATALYSIS
(2021)
Article
Chemistry, Applied
Wanpeng Hu, Haiping Zhang, Min Wang, Jianglong Pu, Kyle Rogers, Hui Wang, Siauw Ng, Ruoqian Xu
Summary: A trinary porous SAT synthesized by sol-gel method was reported as a promising catalyst support for LCO hydro-upgrading, showing superior performance compared to traditional zeolite. SAT support exhibited high surface area, pore volume, and good acid properties, with advantages of simple synthesis procedure and low input cost.
JOURNAL OF POROUS MATERIALS
(2021)
Article
Energy & Fuels
Sunarno Sunarno, Ida Zahrina, Widia Riski Nanda, Amun Amri
Summary: Pyrolysis oil was produced and upgraded through the co-pyrolysis of treated palm oil empty fruit bunch (PO-EFB) and low-density polyethylene (LDPE) plastic waste, using calcium oxide (CaO) catalyst. LDPE plastic addition increased both the yield and quality of the pyrolysis oil. Increasing co-pyrolysis temperature decreased the yield but improved the quality of the pyrolysis oil.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Biotechnology & Applied Microbiology
Hironaga Akita, Mohd Zulkhairi Mohd Yusoff, Shinji Fujimoto
Summary: The study focused on preparing hydrolysate from OPEFB through hydrothermal treatment, with hemicellulose yield decreasing from 153 mg/g-OPEFB to 27.5 mg/g-OPEFB as the temperature increased from 180 to 200 degrees C. The highest glucose yield was obtained from the enzyme-treated solid phase after hydrothermal treatment at 200 degrees C.
FERMENTATION-BASEL
(2021)
Article
Agronomy
Nurul Aini Puasa, Siti Aqlima Ahmad, Nur Nadhirah Zakaria, Noor Azmi Shaharuddin, Khalilah Abdul Khalil, Alyza Azzura Azmi, Claudio Gomez-Fuentes, Faradina Merican, Azham Zulkharnain, Yih-Yih Kok, Chiew-Yen Wong
Summary: Agricultural sorbents, such as oil palm's empty fruit bunch spikelets, are effective in removing oil spills from seawater pollution. The study investigated the effectiveness of EFB spikelets in a filter system and determined the best optimization approach for filtering conditions. The research demonstrated that the response surface methodology (RSM) is more efficient in oil removal compared to one-factor-at-a-time (OFAT) analysis.
Article
Engineering, Chemical
N. M. Nurul Suziana, N. Asikin-Mijan, Z. Zulkarnain, Y. H. Taufiq-Yap
Summary: Catalytic hydrothermal liquefaction of empty fruit bunch (EFB) with a bimetallic modified zeolite catalyst (BaNi, BaLa and BaCe/CHZSM5) effectively produces bio-oil. The addition of Ni, La, and Ce to the Ba/CHZSM5 catalyst improves its physicochemical properties and catalytic performance. The most effective catalyst is Ba1La2/CHZSM5, which has a high surface area and acidic sites, leading to enhanced catalytic activity in the conversion of EFB to bio-oil. Compared to other bimetallic modified catalysts, Ba1La2/CHZSM5 shows a higher abundance of desirable aromatic and aliphatic hydrocarbons and a lower content of oxygenated compounds in the produced bio-oil.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Chemistry, Physical
Guanyi Zhang, Liguo Ma, Yingying Dong, Shuangxin Dou, Xiangjin Kong
Summary: A 3D Mo-functionalized Ni-based bimetallic embedded catalyst with well-dispersed metal nanoparticles and acidic sites was prepared using dendritic mesoporous silica as a sacrificial template. The catalyst exhibited high activity for the hydrodeoxygenation of vanillin to 2-methoxy-4-methylphenol, achieving nearly 100% yield under mild conditions. The NiMo0.1@MSN catalyst displayed robust activity for multiple recycles and showed universality for the hydrodeoxygenation of various lignin derivatives and biomass platform molecules.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Chemical
Yan Luo, Hongling Pan, Xuan Zhou, Zhicai Du, Guotao Li, Juan Wu, Xuefeng Zhang, Chunquan Zhang
Summary: The study investigated the effects of CoMo/gamma-Al2O3 catalysts form and loading ratio on the hydrodeoxygenation upgrading of bio-oil. It was found that the sulfided CoMo/gamma-Al2O3 catalyst facilitated the formation of hydrocarbons, while the reduced catalyst produced more phenols in the organic liquids. Additionally, a high sulfided catalyst loading ratio promoted the formation of hydrocarbons.
Article
Energy & Fuels
Nuno Batalha, Ruben Checa, Chantal Lorentz, Pavel Afanasiev, Krzysztof Stanczyk, Krzysztof Kapusta, Dorothee Laurenti, Christophe Geantet
Summary: This study explores the relationship between hydrothermal liquefaction (HTL) crude oil composition and hydrotreatment (HDT) conversion. It was found that the composition differences of different crude oils determine the potential for producing hydrocarbon fuels, with HTL crude oils rich in aromatic compounds being more favorable for producing naphthenes and aromatic hydrocarbons, while crude oils richer in aliphatic carbon tend to yield paraffins. Additionally, the nature and concentration of heteroatom components also need to be considered.
Article
Energy & Fuels
Khatiya Weerasai, Navadol Laosiripojana, Saksit Imman, Torpong Kreetachat, Nopparat Suriyachai
Summary: An alternative sodium methoxide in methanol medium was investigated for the pretreatment of bagasse. The use of sodium methoxide as an alkaline promoter resulted in high delignification efficiency and solid glucan recovery. The modified pretreatment process helps improve enzymatic hydrolysis for sugar production.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Energy & Fuels
Muhammad Nabeel Haider, Aqib Zafar Khan, Muhammad Usman, Deepanraj Balakrishnan, Muhammad Rizwan Javed, Sana Malik, Chen-Guang Liu, Muhammad Aamer Mehmood, Ghulam Abbas Ashraf
Summary: This study evaluated the resource recovery, wastewater treatment, and biomass production potential of a filamentous cyanobacterium Plectonema terebrans BERC10 using an outdoor open-pond cultivation system. The results showed that seasonal and nutrient variations had a strong impact on metabolites and biomass production. The strain showed the highest biomass production and carbohydrate content in the summer, and the highest protein content in the winter. Additionally, the strain demonstrated promising potential for wastewater treatment by reducing nitrogen, phosphorus, dissolved solids, COD, and BOD levels.
Article
Chemistry, Multidisciplinary
Kai Li, Jia-Wei Zhang, Feng Li, Xin-Qing Zhao, Feng-Wu Bai, Hao Song, Chen-Guang Liu
Summary: This study investigated ethanol fermentation by Zymomonas mobilis in an electro-fermentation system, which increased the ethanol titer by 12.8%. The underlying mechanism was revealed by exploring the correlation among intracellular redox parameters and transcriptome analysis. Two strategies to enhance the system were proposed, including the supplementation of electron shuttles and the manipulation of essential electricity-sensing genes.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Agricultural Engineering
Xiao-Yan Huang, Tian-Jie Ao, Xue Zhang, Kai Li, Xin-Qing Zhao, Verawat Champreda, Weerawat Runguphan, Chularat Sakdaronnarong, Chen-Guang Liu, Feng-Wu Bai
Summary: Building accurate machine learning models can promote biorefinery. This study proposed a strategy to enhance the generalization ability of models and overcome data insufficiency for mixed sugar fermentation simulation. By using multiple inputs single output models and consensus yeast model, the accuracy of the models can be improved.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Kai Li, Cheng Li, Xin-Qing Zhao, Chen-Guang Liu, Feng-Wu Bai
Summary: Corynebacterium glutamicum was engineered to efficiently produce succinic acid from corn stover pre-treated by concentrated-alkali under steam-assistant conditions. The engineered strain achieved high succinate production by blocking by-products pathways, enhancing carbon flux, and releasing end-product inhibition. Xylose utilization pathways were also introduced into the strain for fully utilizing xylose in lignocellulosic hydrolysate. The combined use of glucose and xylose yielded 64.16 g/L of succinic acid from CASA-pretreated corn stover.
BIORESOURCE TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Yang Tian, Ning Wan, Hanqing Zhang, Chang Shao, Ming Ding, Qiuyu Bao, Haiyang Hu, Huiyong Sun, Chenguang Liu, Kun Zhou, Shuai Chen, Guangji Wang, Hui Ye, Haiping Hao
Summary: Hyperactivated glycolysis is a metabolic characteristic of cancer cells, and glycolytic metabolites have nonmetabolic functions as signaling molecules. However, how these metabolites interact with their targets remains unclear. This study introduces a new approach called TRAP to identify target candidates and interactions of glycolytic metabolites in cancer cells, revealing diverse regulatory modalities and potential for cancer therapy.
NATURE CHEMICAL BIOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Lian-Ying Cao, Chen-Guang Liu, Shi-Hui Yang, Feng-Wu Bai
Summary: In this study, a novel strategy was developed to enhance the stress tolerance of Z. mobilis by regulating biofilm formation through heterologous expression of pfs and luxS genes.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Microbiology
Kittapong Sae-Tang, Pornsiri Bumrungtham, Wuttichai Mhuantong, Verawat Champreda, Sutipa Tanapongpipat, Xin-Qing Zhao, Chen-Guang Liu, Weerawat Runguphan
Summary: In this study, the tolerance to d-lactic acid and production were improved in Pichia pastoris by introducing a flocculation gene from Saccharomyces cerevisiae (ScFLO1) and a d-lactate dehydrogenase gene from Leuconostoc pseudomesenteroides (LpDLDH). The engineered strain KM71-ScFlo1-LpDLDH achieved a d-lactic acid titer of 5.12 +/- 0.35 g/L in 48 h, which was 2.6-fold higher than the control strain. Transcriptomics analysis revealed the upregulations of genes involved in lactate transport and iron metabolism as the mechanism of increased tolerance to d-lactic acid.
Article
Biotechnology & Applied Microbiology
Ning Wang, Puyu Zhang, Xiaoli Zhou, Jia Zheng, Yi Ma, Chenguang Liu, Tao Wu, Hong Li, Xiaoqin Wang, Hong Wang, Xudong Zhao, Muhammad Aamer Mehmood, Hui Zhu
Summary: An efficient acetic-acid-tolerant P. kudriavzevii strain, Y2, was isolated from strong-flavored baijiu brewing waste, and its molecular mechanism of acetic acid tolerance was investigated. The results showed that differentially expressed genes were mainly enriched in oxidative phosphorylation, the citrate cycle, glycolysis/gluconeogenesis, and carbon metabolism pathways. The study provided a basis for further investigation of the acid tolerance mechanism in P. kudriavzevii.
FERMENTATION-BASEL
(2023)
Article
Biotechnology & Applied Microbiology
Huiping Tan, Liang Wang, Huiguo Wang, Yanghao Cheng, Xiang Li, Huihui Wan, Chenguang Liu, Tian Liu, Qian Li
Summary: In this study, Komagataella phaffii was engineered to produce cordycepin from methanol, reaching a high productivity of 15.95 mg/(L center dot h). The study also identified a deaminated product of cordycepin during fermentation. This research provides a novel platform for cordycepin production and practical strategies for microbial cell factory optimization.
SYNTHETIC AND SYSTEMS BIOTECHNOLOGY
(2023)
Article
Engineering, Environmental
Tian-Jie Ao, Xin-Qing Zhao, Muhammad Aamer Mehmood, Ning Wang, Hui Zhu, Chen-Guang Liu, Feng-Wu Bai
Summary: This study investigated the effects of electrodes on the performance of anaerobic digestion (AD) by using a double-chamber microbial electrolysis cell integrated anaerobic digestion system (MEC-AD) fed with corn stover. It was found that methane yield was enhanced by 80.41% at 0.6 V, but there was a sharp decline in methanogens at 0.9 V, leading to acidification. The synergistic stabilization of both anode and cathode chambers resulted in the overall improvement of the MEC-AD system.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Siriboon Supajaruwong, Sirawich Porahong, Agung Wibowo, Yu-Sheng Yu, Mohd Jahir Khan, Pisut Pongchaikul, Pattaraporn Posoknistakul, Navadol Laosiripojana, Kevin C. -W. Wu, Chularat Sakdaronnarong
Summary: Carbon dots (CDs) are a new class of nanomaterials with high biocompatibility and tunable fluorescence. This study increased the production capacity of CDs through a continuous flow reactor system and found that CDs synthesized from sucrose precursor exhibited the highest quantum yield and average diameter.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
ChenGuang Liu, JinZhong Fu, QingFeng Hua, Kai Liu, PengYao Zhi, YanLiang Pei, QingJie Zhou, XiShuang Li, BaoHua Liu
Summary: A new method was employed in a geophysical survey of the Ninety East Ridge of the Indian Ocean to perform proportional double seismic source excitation and simultaneously receive signals from the sea surface and the seabed. The survey used two sets of seismic sources with different energies and dominant frequencies, G gun arrays and Bolt gun arrays, and received signals using a 480-channel seismic streamer towed from the sea surface and 21 ocean bottom seismometers (OBS). By processing the data obtained, deep seismic profiles from both the Bolt gun seismic source and the active-source OBS survey were obtained along with the conventional G gun seismic source profile, greatly improving the efficiency of offshore deep-sea seismic surveys.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
Sataporn Malarat, Dilawin Khongpun, Kanokkorn Limtong, Napasin Sinthuwong, Pornpinun Soontornapaluk, Chularat Sakdaronnarong, Pattaraporn Posoknistakul
Summary: This research investigated the value-added potential of coffee pulp fiber as a reinforcement in composite materials. Nanocellulose coffee pulp (NCP) was prepared from coffee pulp (CP) and used as a filler in a polyvinyl alcohol (PVA) matrix to improve the properties of PVA composites. The presence of NCP in the PVA matrix improved the physical properties of the nanocomposite film.