Article
Chemistry, Analytical
Hao Li, Zhen Dong, Bao Wang, Wenfu Wu, Maojiong Cao, Yuanhui Zhang, Zhidan Liu
Summary: Catalytic pyrolysis was used to upgrade raw biocrude from hydrothermal liquefaction of Spirulina, resulting in improved quality of the bio-oil without the need for costly hydrogen. The addition of Fe-HZSM-5 catalyst significantly increased the carbon content and higher heating value of the upgraded bio-oil. Furthermore, the composition of the bio-oil was altered, with a reduction in nitrogen-containing compounds and an increase in hydrocarbons.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Review
Energy & Fuels
Shams Forruque Ahmed, Sabiha Jannat Rafa, Aanushka Mehjabin, Nuzaba Tasannum, Samiya Ahmed, M. Mofijur, Eric Lichtfouse, Fares Almomani, Irfan Anjum Badruddin, Sarfaraz Kamangar
Summary: Microalgae bio-oil has gained popularity as a renewable fuel option due to its low environmental impact and high production. The most efficient route to bio-oil production can be determined by analyzing various conversion mechanisms. However, the cost of using bio-oil commercially is a major concern.
Article
Green & Sustainable Science & Technology
Sherif Ishola Mustapha, Ismail Rawat, Faizal Bux, Yusuf Makarfi Isa
Summary: The pyrolysis of nutrient-stressed Scenedesmus obliquus microalgae over various supported metal catalysts showed promotion of aromatization and acid ketonization of bio-oils. Among the catalysts, Co/Fe3O4-HZSM-5 performed the best in enhancing bio-oil quality and yield, with the lowest nitrogen content, highest bio-oil yield, and HHV value similar to crude petroleum.
Review
Agricultural Engineering
Guangcan Su, Hwai Chyuan Ong, Yong Yang Gan, Wei-Hsin Chen, Cheng Tung Chong, Yong Sik Ok
Summary: It has been shown that co-pyrolysis is an effective method for producing high-quality bio-oil, and the yield and quality of bio-oil can be improved by optimizing feedstocks and adding catalysts.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Chemical
Xiaoxian Li, Yuanzhe Gong, Qi Lu, Min Lin, Jian Liu, Yulong Wu
Summary: In this study, hierarchical pore HZSM-5 zeolite was synthesized through alkali treatment, and the effect of Mo and Cu bimetallic loading on the hydrothermal aromatization of stearic acid was investigated. The results showed that the bimetallic loaded catalyst exhibited high activity and improved hydrothermal stability.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Agricultural Engineering
K. Magrini, J. Olstad, B. Peterson, R. Jackson, Y. Parent, C. Mukarakate, K. Iisa, E. Christensen, R. Seiser
Summary: NREL's research focuses on upgrading biomass fast-pyrolysis vapors through ex-situ methods to produce fuel precursors, fuels, and chemicals. Their work demonstrates the feasibility of producing refinery-compatible hydrocarbon fuel intermediates from biomass-derived vapors, as well as the use of these upgraded oils in FCC refinery operations to produce biogenic carbon-containing fuels.
BIOMASS & BIOENERGY
(2022)
Article
Engineering, Environmental
Regina M. Gonzalez-Balderas, Maria Teresa Orta Ledesma, Ismael Santana, Manuel Felix, Carlos Bengoechea
Summary: Desmodesmus sp. microalgae was used as raw material for producing green nanofibrous membranes through electrospinning, which can reduce biowastes and replace non-degradable plastics for process sustainability. The effect of ultrasound and ozone on microalgae before electrospinning was evaluated, and ultrasound was found to induce cell rupture and protein release, enabling the formation of nanofibers from the microalgae waste. This work highlights the potential of Desmodesmus sp. microalgae in the production of green electrospun mats with various applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Noyala Fonseca, Roger Frety, Emerson Andrade Sales
Summary: This study investigates the production of hydrocarbons in the C5-C12 range through fast micropyrolysis of laboratory-grown microalgae. The use of alumina catalysts increases the yield of C5-C12 hydrocarbon families, and extraction with n-hexane proves effective in removing nitrogen compounds. Dry biomass produces more aromatic molecules, while the n-hexane extract contains fewer cyclic and alkylated molecules.
Article
Geochemistry & Geophysics
Lusheng Yang, Peng Li
Summary: This study uses a real-time high-temperature triaxial seepage test system to investigate the permeability evolution of oil shale in the Jimusar area, Xinjiang. The results show that the permeability of oil shale undergoes three stages of variation with temperature, with a threshold temperature of 400 degrees C. Increasing pore pressure and volumetric stress lead to a decrease in permeability. The findings provide theoretical references for analyzing the seepage process of thermal fluids and pyrolysis oil and gas in oil shale.
Article
Environmental Sciences
Suiyi Li, V. Meenakshi, S. Nithya, Sulaiman Ali Alharbi, Saleh H. Salmen, Rajasree Shanmuganathan, Li Zhang, Changlei Xia
Summary: The effect of wastewater and NaCl mixture on microalgae growth was studied and it was found that increasing salinity in wastewater led to decreased biomass production but significantly increased lipid content. The addition of Fe2O3 nanoparticles enhanced microalgae productivity. Chlorella vulgaris was identified as a suitable candidate for treating high salinity wastewater.
ENVIRONMENTAL RESEARCH
(2023)
Article
Multidisciplinary Sciences
Jinhu Wang, Qiangying Zhang, Naijiang Chen, Junyu Chen, Jinna Zhou, Jing Li, Yanli Wei, Duo Bu
Summary: This study investigates the potential applications of plateau microalgae in environmental purification, biotechnology, and renewable energy. It identifies the high biomass microalgae through screening and sequencing, and examines their light-absorbing properties. The study provides insights into the basic research methods and optimal cultivation conditions for microalgae in high altitude areas.
Article
Chemistry, Multidisciplinary
Obie Farobie, Apip Amrullah, Asep Bayu, Novi Syaftika, Latifa Aisya Anis, Edy Hartulistiyoso
Summary: This study investigated the production of bio-oil and biochar from Sargassum sp. through slow pyrolysis, aiming to obtain valuable data for further utilization. The results showed that bio-oil from Sargassum sp. contained significant compounds, while biochar had higher calorific values and larger surface area. Overall, slow pyrolysis of Sargassum sp. offers the opportunity to obtain value-added chemicals and biochars for various applications.
Review
Green & Sustainable Science & Technology
Hossein Shahbeik, Alireza Shafizadeh, Vijai Kumar Gupta, Su Shiung Lam, Hajar Rastegari, Wanxi Peng, Junting Pan, Meisam Tabatabaei, Mortaza Aghbashlo
Summary: The unfavorable properties of biomass pyrolysis bio-oil require physical/thermochemical methods to enhance its quality. Nanotechnology offers potential solutions to overcome the drawbacks of conventional catalysts used in bio-oil upgrading. This article provides a comprehensive overview of the application of nanocatalysts in bio-oil upgrading, including their mechanisms and effects on important operating parameters. Nanocatalysts have been shown to yield higher bio-oil quality and have advantages over bulk catalysts. However, more research and development are needed before nanocatalysts can be fully realized in practical applications.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Agricultural Engineering
Gabriela F. Ferreira, Luisa F. Rios Pinto, Rubens Maciel Filho, Leonardo V. Fregolente
Summary: This study aimed to cultivate Chlorella vulgaris and Desmodesmus sp. using sugarcane biorefinery residues bagasse and vinasse, exploring the effects of varying growth conditions. The results showed that under specific conditions, high cell density and specific metabolite accumulation can be achieved.
BIORESOURCE TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Emilio Berghahn, Fernanda Miyagi Pita, Leonardo de Oliveira Neves, Jamili Seibel Hofstetter, Mariana Dammann, Luiz Carlos Oliveira da Silva, Giseli Buffon, Anja Dullius, Camille Eichelberger Granada, Raul Antonio Sperotto
Summary: The growing demand for food and the negative effects of agricultural intensification and climate change highlight the need for sustainable alternatives in agriculture. Microalgae offer a renewable resource that can be applied in agricultural environments. Our study evaluated the production of various compounds and the development capacity of microalgae strains isolated from different Brazilian States. The extracts from these strains were used as biostimulants for rice plants, resulting in increased shoot length, root length, shoot dry weight, root dry weight, and seed production.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Chemistry, Analytical
Bahargul Tohniyaz, Nan Zhao, Philbert Mperejekumana, Yuguang Zhou, Deying Chen, Gang Li, Gomotsegang Fred Molelekwa, Ali Mohammed Ibrahim Zayan, Renjie Dong
Summary: This research compares the emissions of different fuels (biomass, Shenmu coal, and co-fuel) under various combustion conditions and found that the cross-draft stove had lower emissions of gaseous pollutants compared to the direct-fired stove. The highest concentration of PAHs was emitted during the ignition phase, while the lowest concentration was generated during the high-power phase. Among the three types of solid fuel combustion, pure biomass emitted the highest amount of PAHs, while Shenmu coal emitted the lowest concentration of PAHs.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Huan Li, Huawei Mou, Nan Zhao, Deying Chen, Yuguang Zhou, Renjie Dong
Summary: Despite the recognition of severe air pollution associated with coal combustion, coal continues to be the main energy source for domestic purposes due to living habits and low fuel prices. However, there is an urgent need for pollutant emission control in coal combustion in the residential sector. This study investigated the combustion performance and gaseous pollutant emissions of a natural draft stove with a cross-draft combustor using different sieved sizes of Shenmu raw coal. The results showed that the particle size of coal had varying effects on firepower and energy efficiency.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Biotechnology & Applied Microbiology
Zhigang Huang, Jiang Zhang, Minmin Pan, Yuhang Hao, Ruichen Hu, Wenbo Xiao, Gang Li, Tao Lyu
Summary: This study proposed a new workflow for biofuel generation from microalgae biomass through lipid extraction and pyrolysis of defatted microalgae residues, and assessed its effects. The results indicated that lipid extraction and pyrolysis temperature had significant impacts on the pyrolysis products, and an optimal pyrolysis temperature was suggested to achieve the twin goals of lowering emission of pollutants and elevating energy products.
BIOCHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Analytical
Huan Li, Yaohong Yu, Fan Yi, Jinglun Qiang, Chen Li, Nan Zhao, Jiaxin Lu, Zhuangzhuang Jia, Ling Zhou, Philbert Mperejekumana, Hussien Elshareef, Yuguang Zhou, Renjie Dong
Summary: This study investigates the nitrogen migration pathways and the formation of NOx precursors during biomass pyrolysis. The results provide insights into understanding and controlling NOx emissions from biomass energy utilization.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Green & Sustainable Science & Technology
Hui Sun, Rangling Li, Enzhen Wang, Jianbin Guo, Yuguang Zhou, Renjie Dong
Summary: Compared to traditional biogas production processes, a novel ensiling-biorefinery-biogas process can increase profits in straw biogas plants by mechanically recycling value-added ensiling fermentation products. This study examined the role of carbon/nitrogen ratio and buffer capacity during the ensiling process for coupling biorefinery and biogas production. The optimized C/N ratio enhanced lactic acid and acetic acid production, while CaCO3 assisted in the production of butyric acid. The application of urea and CaCO3 improved profits and specific methane yield in the process.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Gang Li, Ruichen Hu, Nan Wang, Tenglun Yang, Fuzhuo Xu, Jiale Li, Jiahui Wu, Zhigang Huang, Minmin Pan, Tao Lyu
Summary: This study investigated a strategy of adjusting wastewater nutrient composition for microalgae cultivation and biofuel production, resulting in increased biomass production and improved biofuel quality, as well as reduced environmental impacts.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Lu Zhang, Bin Hu, Xinlei Liu, Zhihan Luo, Ran Xing, Yaojie Li, Rui Xiong, Gang Li, Hefa Cheng, Qiang Lu, Guofeng Shen, Shu Tao
Summary: Nitroaromatic compounds are strong absorbers and have negative effects on human health. Fuel type has a greater impact on NAC emissions, and the composition of compounds produced differs between biomass and coal burning.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Thermodynamics
Gang Li, Yuhang Hao, Tenglun Yang, Jiahui Wu, Fuzhuo Xu, Lianliang Li, Baoming Wang, Ming Li, Nan Zhao, Nan Wang, Cheng Liu, Zhigang Huang, Yuguang Zhou, Yujiang Zhao
Summary: This study evaluated the combustion performance and emissions of hazardous air pollutants from sludge-coal briquettes in an advanced residential stove. The results showed that the burning rate and combustion efficiency of the briquettes were similar, but the emissions of carbon monoxide and mercury varied significantly depending on the sludge content. Ash content was found to be a key factor affecting the emissions. It was suggested that high-efficient co-utilization of sludge and briquette coals is possible in the residential sector.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Biotechnology & Applied Microbiology
Gang Li, Ruichen Hu, Yuhang Hao, Tenglun Yang, Lianliang Li, Zhihan Luo, Longjiao Xie, Nan Zhao, Cheng Liu, Chao Sun, Guofeng Shen
Summary: A new type of biocoal briquette, made by blending bituminous coal with biomass, has shown better combustion efficiency and lower emissions of CO2, CH4, CO, and NO compared to bituminous briquettes. This suggests that bio-coal briquettes could serve as a promising cleaner energy substitute, benefiting rural residents and the environment.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Biotechnology & Applied Microbiology
Gang Li, Yuhang Hao, Tenglun Yang, Wenbo Xiao, Minmin Pan, Shuhao Huo, Tao Lyu
Summary: Cultivating microalgae using modified wastewater and obtaining defatted microalgal residues through pyrolysis has the potential to increase renewable energy production and reduce environmental impact.
BIOENGINEERING-BASEL
(2022)
Review
Biotechnology & Applied Microbiology
Gang Li, Fuzhuo Xu, Tenglun Yang, Xiqing Wang, Tao Lyu, Zhigang Huang
Summary: Anaerobic digestion technology is considered the most effective method for treating a distiller due to its environmental benefits, resource utilization, and low cost. However, microbial activity poses some limitations to this process. This paper critically reviews the microorganisms involved in the anaerobic digestion of a distiller, particularly focusing on the archaea community. The effects of operating parameters such as pH, temperature, and TAN on microbial activity and the process are discussed. Understanding microbial activity can further enhance the maturity of anaerobic treatment technology for a distiller. Additionally, the synergistic effect of different substrates and recent literature on the use of microorganisms to purify a distiller are briefly discussed for better purification and harm reduction. Further research is needed to explore the interactions between microorganisms and establish the mechanisms of microbial interactions in different environments.
FERMENTATION-BASEL
(2023)
Review
Materials Science, Multidisciplinary
Gang Li, Wenbo Xiao, Tenglun Yang, Tao Lyu
Summary: Microalgae carbon dioxide (CO2) fixation technology is an effective way of environmental protection and resource utilization, which can be combined with wastewater and flue gas treatment, biofuel production, etc., to achieve high economic benefits. However, there are still challenges such as poor photosynthetic efficiency, high input cost, and large capital investment in industrial application. Therefore, further research is needed to improve microalgae carbon sequestration capacity and develop strategies for industrialization.
C-JOURNAL OF CARBON RESEARCH
(2023)
Article
Energy & Fuels
Yongkun Fu, Yaohong Yu, Jinglun Qiang, Yun Deng, Sihao Ren, Hussien Elshareef, Huan Li, Renjie Dong, Yuguang Zhou
Summary: Studying the transformation law of NOX precursors in the thermal conversion process of biomass is an effective measure to reduce the emission of NOX pollutants.
Article
Chemistry, Multidisciplinary
Riaz Ahmad, Yuguang Zhou, Chao Liang, Gang Li, Nan Zhao, Adnan Abbas, Fan Yu, Lianliang Li, Jue Gong, Duoyi Wang, Yanming Yang, Zixuan Tang, Muhammad Sultan, Chao Sun, Renjie Dong
Summary: The extensive use of traditional cooking stoves has caused serious air pollution. This study evaluates seven improved coal-fired stoves and finds that they have better thermal efficiency and emission performance compared to an older design stove. Promoting the use of these improved stoves can save fuel and reduce emissions in Hebei Province.
