Article
Biotechnology & Applied Microbiology
Taner Sar, Murat Ozturk, Benjamin C. Stark, Meltem Yesilcimen Akbas
Summary: This study investigated improvements in desulfurization of DBT and DBTS by Paenibacillus strains through immobilization and nanoparticle coating, showing promising results for enhancing biodesulfurization efficiency.
JOURNAL OF APPLIED MICROBIOLOGY
(2022)
Review
Engineering, Environmental
Shuai Liu, Zewei Liu, Hengxi Zhu, Zixuan Wang, Junjiang Guo, Xiaoyue Zhang, Hongxin Yu, Xiangdong Yue, Ping Ning, Bin Li
Summary: This paper is a review of the role of red mud in flue gas desulfurization and denitrification. It compares new technologies with traditional ones and summarizes the characteristics, advantages, and disadvantages of new technologies, providing a foundation for their large-scale application. The review also gives suggestions for future research on red mud utilization, desulfurization technology, and denitration technology.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Yuwei Zhang, Wenmin Qian, Pengxiang Zhou, Yu Liu, Xiaoli Lei, Bin Li, Ping Ning
Summary: The demonstration project of desulfurizing by red mud-limestone process successfully achieved ultra-low emission of flue gas pollutants in a cheap and efficient way, with sulfur dioxide emission concentration less than 50 mg/m3 and particulate pollutants less than 10 mg/m3. The desulfurization mechanism, as well as the advantages and disadvantages of the red mud-limestone process, were analyzed through laboratory experiments and characterization analysis of engineering samples.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Xianrong Zheng, Guangyuan Tian, Yongjia Li
Summary: Cu modified red mud-fly ash sorbent (CuRMFA) prepared by hydration impregnation method can effectively remove SO2 from coal-fired flue gas. The removal of SO2 is mainly through chemical reaction, resulting in SO42- as the desulfurized product. The conversion of Cu+ to Cu2+ enhances the adsorption oxygen conversion and catalytic oxidation performance, playing an important role in improving the desulfurization efficiency.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Xiaoyu Zhou, Hang Liu, Sixiao Liu, Lei Zhang, Tianyi Wang, Chengyin Wang, Dawei Su
Summary: By using the α-Fe2O3/g-C3N4/HNTs composite material, efficient photocatalytic desulfurization of dibenzothiophene in model oil under visible light can be achieved. The unique structure of the composite material promotes the transfer and separation of photogenerated carriers, thereby enhancing the efficiency of photocatalytic reactions.
Article
Chemistry, Physical
Yue Liu, Jing-zhi Tian, Yong-jie Zheng, He-shan Zheng, Shuo Li, Tao Jing, Hong-rui Zhang, Jing-ying Shao
Summary: A core-shell porous catalyst coated with TiO2-fibrous silica (KCC-1) was prepared and showed excellent catalytic desulfurization performance. The unit desulfurization rate was significantly improved without additional oxidants. The adsorption-catalysis-resorption desulfurization system was effective, enhancing the reaction rate and achieving selective adsorption and coupling desulfurization. Furthermore, the spent catalyst could be regenerated without a decrease in desulfurization rate.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Armin Raeisi, Alireza Najafi Chermahini, Marzieh Esmaeilzadeh Khabazi, Mohamad Mohsen Momeni, Rafael Luque, Antonio Pineda, Enrique Rodriguez Castellon, Carolina Vargas Fernandez
Summary: This investigation successfully removes sulfur-based compounds by a combination of absorptive and oxidative desulfurization processes using a series of novel Bi-based bifunctional photo electrocatalysts. The results showed that the catalysts had higher efficiency in absorptive desulfurization and better results in oxidative desulfurization. Among the catalysts, photoelectrocatalytic desulfurization performed best in dibenzothiophene removal.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Xueke Li, Yan Liu, Tingan Zhang
Summary: Red mud desulfurization is an eco-friendly technology that neutralizes the acidity of red mud slurry without generating waste acid. Research on intensifying red mud desulfurization in external fields, such as using ball mill or ultrasound, is lacking. This study used various instruments to analyze the desulfurization mechanism and found that ball mill was more effective in promoting red mud desulfurization.
Article
Engineering, Environmental
Kang-Ho Bang, Youn-Bae Kang
Summary: This study assessed red mud as a new desulfurization flux in the steelmaking process and found that pre-reduction of red mud and mechanical stirring effectively enhanced desulfurization efficiency. However, adding more than 20% red mud did not increase the desulfurization rate. The evaluation of desulfurization efficiency using the DeS Index showed that red mud/lime mixtures had similar efficiency compared to commercially used desulfurization fluxes and even outperformed lime/fluorspar mixed flux.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Zimeng Nie, Qun Zhao, Qilin Zhao, Yingjie Li, Dian Yang, Huaying Liu, Shupu Yang, Jie Li, Senlin Tian, Chen Li, Cheng Tie, Jianhong Huang, Ping Ning
Summary: In this study, supercritical water and leaching agents were used to dealkalize industrial solid waste red mud for the first time. The results showed that the SCW technique accelerated the conversion of insoluble structural alkalis to soluble chemical alkalis in the red mud. This approach has promising applications in red mud waste utilization, SO2 pollution control, and sustainable growth of the aluminum industry.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Hongming Jiang, Shuchang Yan, Jingzhi Yan, Chengyang Li, Yan Lin, Zengli Zhao, Zhen Huang, Hongyu Huang, Haibin Li
Summary: Red mud, an alkaline waste residue from the aluminum industry, can be used as a raw material for preparing oxygen carriers. This study discussed the desulfurization performance and mechanism of different types of red mud oxygen carriers under various reaction conditions. The results showed that the desulfurization capacity of red mud oxygen carriers mainly relied on Na/Ca elements, while Fe2O3 had no desulfurization capacity at temperatures above 750 degrees C. Water-washed red mud oxygen carriers exhibited good desulfurization performance, with WS900 achieving a desulfurization efficiency of 86.28% at 900 degrees C. The red mud oxygen carriers prepared at 800-900 degrees C demonstrated good desulfurization activity, while those prepared at 1000 degrees C or above showed a significant decline in performance. The key components responsible for desulfurization activity in red mud oxygen carriers included Na2Ti3O7, Ca2SiO4, and CaTiO3, while NaAlSiO4, Na6Al4Si4O17, and Ca2Al2SiO7 had minimal sulfur fixation capacity. The redox performance of the red mud oxygen carriers under multi-cycle conditions was minimally affected by the H2S atmosphere, and the water-washed red mud oxygen carriers rich in Na and Ca exhibited the best redox performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Saikui Wang, Yongyi Liu, Yilin Wang, Tiangui Qi, Guihua Liu, Qiusheng Zhou, Zhihong Peng, Xiaobin Li
Summary: This article discusses a case study of producing alumina from high-sulfur bauxite at an alumina refinery in Zunyi, Guizhou, China, and the application of flotation desulfurization and chemical oxidation methods in controlling impurities and equipment corrosion. The study investigates the chemical and mineralogical compositions of different materials involved in the Bayer process to understand the reasons for sulfur balance and low alumina extraction efficiency.
Article
Materials Science, Multidisciplinary
Feihan Jia, Hao Sun, Linyu Yu, Xiaolei Lu, Yiming Zhou, Mohamed Elchalakani, Peng Du
Summary: The preparation of ferrite-rich sulfoaluminate cement using red mud and desulfurization gypsum is feasible and can exhibit rapid mechanical strength development in the early and continuous development in the later stage.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Environmental Sciences
Xinsheng Li, Shuo Ai, Yongchun Huang, Chengdu Huang, Wanguo Yu, Zhijuan Mao
Summary: In this study, metallic copper loaded on SBA-15 mesoporous silica proved to be an efficient adsorbent for the removal of DBT in fuel oils. Analysis using Raman spectroscopy, XPS, and Auger spectroscopy provided insights into the interaction mechanism between DBT and copper, and the complete recovery of adsorption capacity was achieved successfully.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Construction & Building Technology
Zhibo Wei, Qingsong Liu, Zengqing Sun, Xiaoxian Huang, Min Gan, Zhiyun Ji, Xuling Chen, Xiaohui Fan
Summary: In this study, an efficient co-disposal method for flue gas desulphurization residue (DR) and red mud (RM) was developed, resulting in the synthesis of high strength alkali activated materials (AAM). The synthesized AAMs exhibited excellent mechanical properties.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Geochemistry & Geophysics
Guilherme O. Goncalves, Cristiano Lana, Ricardo Scholz, Ian S. Buick, Axel Gerdes, Sandra L. Kamo, Fernando Corfu, Daniela Rubatto, Michael Wiedenbeck, Herminio A. Nalini, Luiz Carlos A. Oliveira
GEOSTANDARDS AND GEOANALYTICAL RESEARCH
(2018)
Article
Polymer Science
Ana Pacheli Heitmann Rodrigues, Italo Coura Rocha, Arthur Caron Mottin, Luiz Carlos Alves Oliveira, Patricia Santiago de Oliveira Patricio
JOURNAL OF APPLIED POLYMER SCIENCE
(2018)
Article
Chemistry, Applied
Nadia S. V. Capanema, Alexandra A. P. Mansur, Sandhra M. Carvalho, Isadora C. Carvalho, Poliane Chagas, Luiz Carlos A. de Oliveira, Herman S. Mansur
CARBOHYDRATE POLYMERS
(2018)
Article
Chemistry, Inorganic & Nuclear
Chris H. J. Franco, Poliane Chagas, Gabriela S. Caldeira, Luiz C. A. Oliveira, Patterson P. de Souza, Alexandre A. Leitao, Giovanni W. Amarante, Renata Diniz
DALTON TRANSACTIONS
(2018)
Article
Environmental Sciences
Rodrigo C. Hott, Luiz F. O. Maia, Mayra S. Santos, Marcia C. Faria, Luiz C. A. Oliveira, Marcio C. Pereira, Cleide A. Bomfeti, Jairo L. Rodrigues
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2018)
Article
Environmental Sciences
Marilia C. M. Ribeiro, Camila C. Amorim, Regina F. P. M. Moreira, Luiz C. A. Oliveira, Andreia B. Henriques, Monica M. D. Leao
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2018)
Article
Environmental Sciences
Luiz F. O. Maia, Rodrigo C. Hott, Patricia C. C. Ladeira, Bruno Lemos Batista, Thaina G. Andrade, Mayra S. Santos, Marcia C. S. Faria, Luiz C. A. Oliveira, Douglas S. Monteiro, Marcio C. Pereira, Jairo Lisboa Rodrigues
Article
Environmental Sciences
Victor Augusto Araujo de Freitas, Samuel Moura Breder, Flavia Paulucci Cianga Silvas, Patricia Radino Rouse, Luiz Carlos Alves de Oliveira
Article
Environmental Sciences
Isadora C. Carvalho, Fernanda G. L. Medeiros Borsagli, Alexandra A. P. Mansur, Claudia L. Caldeira, Dionei J. Haas, Andrey P. Lage, Virginia S. T. Ciminelli, Herman S. Mansur
Summary: This study developed three-dimensional porous hydrogel sponges for dye removal and antibacterial applications, with high adsorption capacity and antibacterial activity demonstrated through comprehensive characterization.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Anderson J. Caires, Alexandra A. P. Mansur, Isadora C. Carvalho, Sandhra M. Carvalho, Herman S. Mansur
MATERIALS CHEMISTRY AND PHYSICS
(2020)
Article
Materials Science, Multidisciplinary
Josue C. Amaral-Junior, Alexandra A. P. Mansur, Isadora C. Carvalho, Herman S. Mansur
Summary: In this study, a novel hybrid nanostructure for sunlight energy photoconversion was designed and developed, utilizing safe and sustainable design strategies. The nanostructure consists of non-cadmium inorganic semiconductor quantum dots, carboxylic-functionalized cellulose derivative, and a green chemistry approach for water-soluble supramolecular colloidal core-shell nanostructures. Through optical and photoelectrochemical characterization, the potential application of these quantum dot-sensitized nanostructures in sunlight energy conversion was confirmed, highlighting their prospects for sustainable clean energy production.
Article
Chemistry, Applied
Alexandra A. P. Mansur, Josue C. Amaral-Junior, Sandhra M. Carvalho, Isadora C. Carvalho, Herman S. Mansur
CARBOHYDRATE POLYMERS
(2020)
Article
Nanoscience & Nanotechnology
Nadia S. V. Capanema, Isadora C. Carvalho, Alexandra A. P. Mansur, Sandhra M. Carvalho, Andrey P. Lage, Herman S. Mansur
ACS APPLIED NANO MATERIALS
(2019)
Article
Materials Science, Biomaterials
Sandhra M. Carvalho, Alice G. Leonel, Alexandra A. P. Mansur, Isadora C. Carvalho, Klaus Krambrock, Herman S. Mansur
BIOMATERIALS SCIENCE
(2019)
Article
Engineering, Environmental
Leydiane de O. Pereira, Stefany G. de Moura, Gesiane C. M. Coelho, Luiz C. A. Oliveira, Eduardo T. de Almeida, Fabiano Magalhaes
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2019)