Article
Environmental Studies
Joao Paulo da Costa Evangelista, Aruzza Mabel de Morais Araujo, Amanda Duarte Gondim, Antonio Souza de Araujo
Summary: This study investigated the esterification of oleic acid using Zr-SBA-15 and SO42-/Zr-SBA-15 catalysts for biodiesel production. The results showed that the SO42-/Zr-SBA-15 catalyst had higher catalytic activity with a yield of 80.7%, meeting the specified standards.
ENERGY & ENVIRONMENT
(2023)
Review
Thermodynamics
Xiaoling Ma, Fengsheng Liu, Yaxin Helian, Chaorui Li, Zhongjie Wu, Hui Li, Huijun Chu, Yongbo Wang, Yangyang Wang, Wanpeng Lu, Min Guo, Mingzhi Yu, Shoujun Zhou
Summary: Biodiesel is a green and renewable energy source, and the use of heterogeneous catalysts like metal organic frameworks (MOFs) in its production process is gaining attention due to the difficulties of recovery and reuse associated with traditional homogeneous catalysts. The unique structure and advantages of MOFs make them a promising candidate for catalyzing biodiesel production.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Review
Energy & Fuels
M. Mulyatun, Jedy Prameswari, I. Istadi, W. Widayat
Summary: Research on biodiesel production utilizing heterogeneous catalysts focuses on improving production quality and sustainability, with non-food feedstocks and acid-base bifunctional catalysts considered as important factors that can significantly reduce production costs by 60-70%.
Review
Chemistry, Multidisciplinary
Lifei Lian, Huaiying Zhang, Sai An, Wei Chen, Yu-Fei Song
Summary: POMs, as a class of discrete anionic metal-oxygen clusters with tunable structure, exhibit super strong Bransted acidity, high proton mobility, and thermal stability, making them potential green alternatives to conventional homogeneous acid catalysts. Through design strategies such as functionalized cations, covalent interactions, non-precious metal support, and porous polymer framework, POMs-based heterogeneous catalysts have shown excellent catalytic performance in specific acid-catalyzed reactions.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Engineering, Environmental
Nermein Mostafa Marzouk, Ahmed O. Abo El Naga, Sherif A. Younis, Seham A. Shaban, Abdel Monem El Torgoman, Fathy Y. El Kady
Summary: The study developed a hierarchical mesoporous ZSM-5 zeolite catalyst containing sulfonic acid groups for the esterification of oleic acid with methanol, achieving a 100% conversion rate under optimized conditions. The catalyst showed promising performance for one-step biodiesel production from low-grade feedstocks containing high levels of FFAs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Francisco Nunez, Lifang Chen, Jin An Wang, Sergio Ordin Flores, Jose Salmones, Ulises Arellano, Luis Enrique Norena, Francisco Tzompantzi
Summary: In this study, Co/ZSM-5 mesoporous catalysts with different acidity and Co loadings were prepared using mesoporous ZSM-5 as support. The results showed that the Si/Al ratio in ZSM-5 affected the surface acidity and cobalt oxide reducibility. Under optimal reaction conditions, the 10 wt% Co/ZSM-5 catalyst exhibited high biodiesel selectivity. This can be attributed to the presence of acid sites, a balanced B/L ratio, and the high reducibility of Co3O4 nanoparticles.
Article
Green & Sustainable Science & Technology
Siri Fung Basumatary, Khemnath Patir, Bipul Das, Pankaj Saikia, Sujata Brahma, Bidangshri Basumatary, Biswajit Nath, Bhimraj Basumatary, Sanjay Basumatary
Summary: Biodiesel, a versatile and renewable eco-friendly fuel, is synthesized through transesterification and esterification reactions using both homogeneous and heterogeneous catalysts. Recent focus has been on the applications and performance of MOFs-based catalysts for biodiesel production. MOFs, with features like high surface area, large porosity, and tunable structures, are seen as promising catalysts for biodiesel synthesis.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Wenlei Xie, Quan Wang, Lihong Guo, Qiaofei Zhang
Summary: This study successfully converted low-grade acidic oils to biodiesel using the composite catalyst ZrMo-AAS. The catalyst showed dual Bronsted-Lewis acidic sites and mesoporous structure, leading to high catalytic activity and stability, making it suitable for biodiesel production from low-grade acidic oils.
BIOENERGY RESEARCH
(2023)
Review
Engineering, Environmental
Xiang Tan, Putla Sudarsanam, Jinyu Tan, Anping Wang, Heng Zhang, Hu Li, Song Yang
Summary: The development of social productive forces leads to the increasing consumption of fossil fuels, resulting in global warming and abnormal climate change. Biodiesel, produced using solid acid catalysts, is recognized as a renewable and clean energy source.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Himmat Singh, Amjad Ali
Summary: A heterogeneous catalyst of K+ impregnated tungstophosphoric acid supported on graphene oxide was used for one pot esterification and transesterification of waste oil (WO). The catalyst structure was characterized by XRD, and its composition was confirmed by XPS analysis. TPD technique showed the presence of acidic and basic sites on the catalyst surface. Under optimized conditions, >98.5% biodiesel was produced within 1.5 h using a catalyst loading of 10 wt% (concerning oil), methanol: oil molar ratio of 9:1, and a reaction temperature of 65 degrees C. The catalyst could be recycled six times with metal levels in the reaction mixture below 2 ppm, and it showed activity even in the presence of free fatty acid and moisture contents.
Article
Green & Sustainable Science & Technology
Xiaocheng Lin, Mantian Li, Zhiwen Chen, Meichen Li, Youjie Huang, Ting Qiu
Summary: PSILs were fabricated by a facile reaction between PEI and PS, showing high catalytic activity and stability for biodiesel production. The one-step fabrication process of PSILs is simpler than traditional ILs, indicating potential advantages.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Biochemistry & Molecular Biology
Balkis Hazmi, Mahnoush Beygisangchin, Umer Rashid, Wan Nur Aini Wan Mokhtar, Toshiki Tsubota, Ali Alsalme, Chawalit Ngamcharussrivichai
Summary: This study utilized the by-product glycerol from previous transesterification as a precursor for acid catalyst synthesis in biodiesel production. Sulfonated glycerol-SO3H and glycerol-ClSO3H were synthesized through sulfonation with sulfuric acid and chlorosulfonic acid, respectively. Various analytical techniques were used to characterize the synthesized catalysts, which showed mesoporous structures but low surface areas. The acidity of the catalysts was sufficient for catalyzing biodiesel production, and optimal reaction conditions were determined. The catalysts could be reused for three reaction cycles but experienced deactivation.
Article
Thermodynamics
Allan Almeida Albuquerque, Flora T. T. Ng, Leandro Danielski, Luiz Stragevitch
Summary: Three solid acid-catalyzed processes for biodiesel production were designed and optimized, with processes A and B found to be the most economically and environmentally friendly options. Process A, with a simpler flowsheet, was identified as the best choice compared to process B.
Article
Thermodynamics
Bingxin Zhang, Ming Gao, Weiqi Tang, Xiaona Wang, Chuanfu Wu, Qunhui Wang, Siu Ming Cheung, Xiankun Chen
Summary: This study investigated the effect of various reagents on the esterification activities of carbon-based solid acid catalysts. The results showed that the density of sulphonic acid groups in the catalyst positively correlated with the esterification efficiency, and the high lignin content of biomass stimulated the loading of sulphonic acid groups. The bamboo powder pretreated with 1% H2SO4 yielded the highest lignin content and esterification efficiency.
Article
Engineering, Chemical
Jundong Wang, Lokmane Abdelouahed, Jie Xu, Nicolas Brodu, Bechara Taouk
Summary: Hydrodeoxygenation of model bio-oils, including acetic acid, phenol, acetone, 4-ethylguaiacol, furfural, and water, was performed using Ni2P/HZSM-5 catalysts. The conversion rate of acetic acid increased with temperature, in contrast to phenol due to differential adsorption capacity. Acetone was formed by self-ketonization of acetic acid, and different reaction networks were proposed for the main reactions.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Rondinele Alberto dos Reis Ferreira, Cicero Naves de Avila Neto, Fabio Bellot Noronha, Carla Eponina Hori
Summary: The effect of Ni catalysts with different loadings on MgAl2O4 for LPG steam reforming was studied. The results showed that the reduction temperature and product similarity varied with different loadings, and higher loading samples exhibited better activity.
CHEMICAL ENGINEERING COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Camila A. Teles, Priscilla M. de Souza, Raimundo C. Rabelo-Neto, Alejandra Teran, Gary Jacobs, Clara Vilela Weikert, Zuy M. Magriotis, Vinicius O. O. Goncalves, Daniel E. Resasco, Fabio B. Noronha
Summary: The effect of support type on the removal of oxygenated functional groups during hydrodeoxygenation of guaiacol was investigated. Three main reaction pathways were proposed, with demethoxylation being the dominant pathway. The presence of certain support types led to further conversion of phenol, while others resulted in the detection of benzene. The strong adsorption of hydroxyl groups may inhibit the deoxygenation rates.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Alice Medeiros de Lima, Sandra Cristina Dantas, Adilson Jose de Assis, Carla Eponina Hori
Summary: The influence of temperature, residence time, and C2H5OH feed concentration on the ethanol dehydration reaction was investigated using the response surface methodology for gamma-Al2O3 and CeZrO2 catalysts. The optimization results showed different optimum conditions for each catalyst, and catalyst characterization was performed using various techniques.
Article
Chemistry, Physical
Thallis M. Souza, Zuy M. Magriotis, Priscila F. Sales, Ricardo F. Resende, Andre L. Sales, Felipe M. Pinto, Adelir A. Saczk
Summary: In this study, a Cr2O3 catalyst was synthesized from sulfochromic residue (SCR) obtained during the analysis of soil organic matter. The catalytic performance of Cr2O3 was evaluated using methylene blue (MB) dye as a model molecule. The results showed that Cr2O3 exhibited high catalytic activity and could be reused effectively.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Energy & Fuels
Marcus P. B. Martins, Carla E. Hori, Marcos A. S. Barrozo, Luiz G. M. Vieira
Summary: This study investigated the potential of Spirulina platensis to produce bio-oil from catalytic solar pyrolysis assisted by Fresnel lens and evaluated the effects of catalyst on the yield and quality of the liquid product. The results showed that the mixed oxides derived from hydrocalumite improved the quality of bio-oil by reducing the content of oxygenated compounds and increasing the percentage of hydrocarbons.
Article
Chemistry, Physical
Lucas Mendes Vieira, Dyovani Bruno Lima Santos, Carla Eponina Hori
Summary: In this study, the sorption-enhanced steam reforming of ethanol process was investigated using modified catalysts. The results showed that the catalyst containing mayenite exhibited the best CO2 capture capacity and stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Cassiano Cunha Oliveira, Carla Eponina Hori
Summary: This study evaluated the performance of nickel-based catalysts supported on CaO and CaO-MgO-Al2O3 in the sorption enhanced steam reforming of ethanol. The addition of MgO and Al2O3 to CaO improved the stability and purity of the catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Analytical
Fabiana da Silva Felix, Matheus Julien Ferreira Bazzana, Leticia Cristina Assis, Bethania Leite Mansur, Sara Silveira Vieira, Zuy Maria Magriotis, Leonardo Luiz Okumura, Adelir Aparecida Saczk
Summary: An electrochemical sensor modified with zeolite dealuminated with citric acid was developed for the determination of hydroxyzine in pharmaceutical products. The modified sensor showed reproducible amperometric responses in a linear range of 1.0x10(-6) - 2.0x10(-5) mol L-1. The method developed by BIA-amperometry was applied for the determination of the analyte in tablets and commercial syrups and the results found agreement with the nominal values of the commercial samples.
BRAZILIAN JOURNAL OF ANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Chemical
Gustavo Paiva Ribeiro, Sandra Cristina Dantas, Eloizio Julio Ribeiro, Carla Eponina Hori
Summary: Single superphosphate (SSP) is produced through complex reactions by direct reaction between phosphate rock concentrates and sulfuric acid in Brazil. The presence of iron oxide in the phosphate concentrates poses a challenge in SSP production, as it may result in the formation of water-insoluble iron phosphates with lower agronomic efficiency. However, the study found that with optimized reaction conditions, SSP with high NAC solubility and conversion rates nearing 100% can be achieved even with phosphate concentrates containing up to 14.7% Fe(2)O(3). These findings demonstrate the technical feasibility of using phosphate rocks with higher iron concentrations in industrial operations.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Environmental
Raissa Aparecida da Silveira Rossi, Leilei Dai, Marcos Antonio de Souza Barrozo, Luiz Gustavo Martins Vieira, Carla Eponina Hori, Kirk Cobb, Paul Chen, Roger Ruan
Summary: This study investigates the catalytic microwave-assisted pyrolysis of microalgae in a tandem catalytic bed, aiming to reduce the formation of unwanted compounds and enhance aromatic hydrocarbon production. The results show that the hydrotalcite catalyst promotes de-acidification and de-nitrification reactions, while the zeolite catalyst converts intermediate compounds into hydrocarbons. The maximum hydrocarbon and benzene yields are achieved at a temperature of 500 degrees C and a NiHTC/SiC:NiHZSM-5/SiC catalyst ratio of 1:1. The study also provides important data on energy recovery and bio-oil quality during the catalytic pyrolysis of microalgae.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Lucas G. Moura, Grazielle Emanuella S. dos Santos, Higor O. Alves, Juliane Z. Marinho, Marcos A. S. Barrozo, Antonio Otavio T. Patrocinio, Fabio B. Noronha, Carla E. Hori
Summary: The catalytic performance of nickel-based catalysts in the gas-phase hydrogenation reaction was investigated, showing good catalytic activity and selectivity. Additionally, the concentration of the catalyst and the type of biomass used also had a significant influence on the product distribution.
Article
Polymer Science
Gleyca de Jesus Costa Fernandes, Karoline Ferreira Silva, Clara Suprani Marques, Luiza Zazini Benedito, Beatriz Ribeiro Cabral, Pedro Henrique Campelo, Soraia Vilela Borges, Jose Manoel Marconcini, Zuy Maria Magriotis, Pedro Ivo Cunha Claro, Marali Vilela Dias
Summary: A colorimetric indicator label based on starch and iodine has been developed to detect sulfur dioxide (SO2) concentration in shrimp products. The label, with the incorporation of iodine into the starch matrix, showed potential as an economical and simple method to determine the safety of shrimp-based foods.
POLIMEROS-CIENCIA E TECNOLOGIA
(2022)
Article
Materials Science, Multidisciplinary
Priscila Ferreira de Sales, Lidiany Mendonca Zacaroni Lima, Zuy Maria Magriotis, Ricardo Felipe Resende, Thallis Martins Souza, Hugo Cesar Tadeu, Fernanda Figueiredo Collela, Adelir Aparecida Saczk
Summary: This study evaluated the effect of calcination material from an ant colony as an adsorbent for methylene blue dye removal. The results showed that the calcined sample at a temperature of 290℃ had a high adsorption efficiency, but its treatment process may have a negative impact on phenolic and volatile compounds.
MATERIA-RIO DE JANEIRO
(2022)
Review
Chemistry, Multidisciplinary
Ana Luisa Abrantes Simoes, Julia Soares Rodrigues, Maria Helena Araujo, Sara Silveira Vieira
Summary: Processes involving CO2 capture, storage and conversion are essential in reducing climate changes. Developing technologies to minimize pollutants in the atmosphere is necessary, and heterogeneous catalysis shows great potential in this area.
REVISTA VIRTUAL DE QUIMICA
(2022)
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)
