Article
Green & Sustainable Science & Technology
Jin Liu, Jin Jiang, Chaoshun Jiang, Pu Chen
Summary: This paper proposes a desulfurization method for high-sulfur coal using reduced iron powder + heat treatment + magnetic separation. By studying the effects of heating temperature, heating time, and coal-to-iron powder ratio, the optimized desulfurization rate of 80.09% was achieved with the sulfur content transferred into recovered iron.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Annemerel R. Mol, Sebastian D. Pruim, Milan de Korte, Derek J. M. Meuwissen, Renata D. van der Weijden, Johannes B. M. Klok, Karel J. Keesman, Cees J. N. Buisman
Summary: This article reports the effects of a novel sulfidic reactor on sulfur particle size and morphology. The results show that the reactor promotes the removal of the smallest individual sulfur particles and promotes the production of sulfur agglomerates. The experiments and modeling results demonstrate the potential of the sulfidic reactor to improve process operation, sulfur separation, and sulfur recovery.
Review
Materials Science, Multidisciplinary
Cheng-bin Shi, Yi Huang, Jian-xiao Zhang, Jing Li, Xin Zheng
Summary: Electroslag remelting (ESR) combines liquid metal refining and solidification structure control, with desulfurization being a typical aspect. This paper reviews advancements in desulfurization practices of ESR, assessing the effects of processing parameters on desulfurization and discussing the interrelation between desulfurization and sulfide inclusion evolution. Challenges for future work are also proposed.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Article
Energy & Fuels
Yuzhi Liu, Chang Deng, Peiwen Wu, Hui Liu, Feng Liu, Ruoyu Liu, Wenshuai Zhu, Chunming Xu
Summary: In this study, a high-entropy zeolitic imidazolate framework (HE-ZIF) was synthesized and utilized in an oxidative desulfurization system (ODS) for diesel fuel. The HE-ZIF demonstrated efficient desulfurization and the production of high-value products, enhancing the overall sustainability of the process.
Article
Engineering, Environmental
Suho Kim, Nishesh Kumar Gupta, Jiyeol Bae, Kwang Soo Kim
Summary: In this study, a coral-like Mn2O3/Fe2O3 nanocomposite was synthesized and showed high adsorption capacity for H2S gas. XPS and XRD analysis revealed the presence of sulfur mainly in the form of sulfate ions, confirming the potential of transition metal oxide nanocomposite for H2S removal at room temperature.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Energy & Fuels
Abdurrashid Haruna, Zulkifli Merican Aljunid Merican, Suleiman Gani Musa, Sulaiman Abubakar
Summary: Fuel oil consumption has increased due to rapid population growth, but its pollution issues have become a major threat to the petrochemical industry. Developed nations have imposed restrictions on sulfur in fuel oil to mitigate the environmental and health concerns. This review discusses various desulfurization technologies and highlights the importance of developing green fuel oil.
Article
Environmental Sciences
Fan Zeng, Hui Hu, Jiawei Lu, Minghan Luo, Hao Huang, Keqiang Ding
Summary: The study investigated the performance and mechanism of desulfurization of sludge-based activated carbons modified by ferric nitrate, showing significant improvements in H2S removal performance and a shift in desulfurization products to sulfate after modification.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Jiawei Hu, Hilde Poelman, Stavros-Alexandros Theofanidis, Jonas J. Joos, Christophe Detavernier, Dirk Poelman, Wei Wei, Vladimir V. Galvita
Summary: CCLHGD is a new hot gas desulfurization method that utilizes alternating sulfuration and regeneration processes to remove H2S. Fe2O3 is gradually converted into iron sulfides by H2S, and it can be fully regenerated to iron oxides by CO2. This work provides an efficient chemical looping scheme for H2S removal and offers new opportunities for hot gas desulfurization.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Energy & Fuels
Longfei Tang, Xueli Chen, Xiuxiang Tao
Summary: This study investigated the non-thermal microwave effect in the removal of organic sulfur from coal through microwave irradiation combined with oxidation assistants. XANES analysis revealed that microwave radiation promoted the conversion of low-valence sulfur into high-valence sulfur, resulting in the presence of heterocyclic and oxidized sulfur in the treated coal. Quantum chemical calculations demonstrated the improvement in nucleophilic reaction activity of sulfur-containing groups and reduction in C-S bond strength under the influence of extra electric fields from the non-thermal microwave effect. The reduction of reaction activation energy and increase in reaction rate further facilitated the formation of oxidized sulfur in coal.
Article
Energy & Fuels
Chunjuan Zhang, An Yan, Huiqing Guo, Yanqiu Lei, Haigang Hao, Fenrong Liu
Summary: The study found that CuO has a strong sulfur-fixation effect on H2S but a weak ability to break down SO2. Enriched oxygen conditions can promote CuO to absorb and decompose SO2, as well as catalyze the decomposition of thiophene. Both experimental and theoretical results are consistent with each other in this study.
Article
Chemistry, Physical
Ye Song, Bo Peng, Xue Yang, Qiuqiao Jiang, Jun Liu, Wei Lin
Summary: The reactive adsorption behavior of thiophene on the reduced Ni/ZnO sample was investigated through theoretical and experimental studies. The sulfur-removal process involves formation of S-Ni bond, leading to cleavage of C-S bond and formation of Ni3S2 phase and S-free C4 olefin. Two essential features for efficient S-transfer were identified as H-2 atmosphere and close contact between the two phases.
GREEN ENERGY & ENVIRONMENT
(2021)
Article
Energy & Fuels
Ning Ding, Mei Li, Jinsong Yue, Sidan Cheng, Shiyong Xu, Rongsheng Xu
Summary: This study investigates the effect of visible light irradiation on oxidative desulfurization. The results show that visible light irradiation can significantly enhance the desulfurization rate of coal. Coal responds to visible light by generating electron-hole pairs, thereby improving the oxidative desulfurization ability of the system. The study also reveals that low-valence sulfur transforms into high-valence sulfur through a certain transition state.
INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION
(2023)
Article
Energy & Fuels
Xiaogang Mu, Jinfang Liu, Fei Gao, Cunbao Deng, Zhixin Jin, Linsheng Gong, Yin Peng
Summary: A new microwave-assisted bromine water removal method was proposed to address the difficulty of desulfurization in large-size and high-sulfur coal, particularly organic sulfur. The experiment showed that bromine water effectively removes organic sulfur from coal, with a desulfurization rate of up to 90% after 5 repeated reactions. Analysis using XPS and IC indicated that the sulfur form on the coal surface changed after treatment, and sulfur gradually transformed into a higher valence state during desulfurization.
Article
Chemistry, Physical
Ganchang Lei, Sihui Qi, Haiyan Li, Yinjiang Xue, Lijuan Shen, Xiaohai Zheng, Shiping Wang, Yanning Cao, Yingying Zhan
Summary: This study reports the first use of carbon-doped boron nitride (BCN) for selective catalytic oxidation of H2S. The obtained carbon-doped BN nanosheets with an ultrathin layer structure exhibit outstanding H2S elimination and high S yield. Compared to traditional catalysts, such as iron- and carbon-based catalysts, carbon-doped BN nanosheets display better catalytic performance.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Yanjun Du, Qing Zhou, Jiankun Zhao, Hexi Wu, Xiaoyan Li, Yibao Liu, Zhanggao Le
Summary: Nanoscale pyrite-zero nickel composites (FeS2/Ni-0) were fabricated by ball milling method for the adsorption of selenium(IV) (Se(IV)) from aqueous solution. The effects of pH, solid-liquid ratio, time, temperature, and initial concentration of Se(IV) on the adsorption process were investigated. FeS2/Ni-0 showed a good removal effect on Se(IV), with a maximum adsorption capacity of 259 mg g(-1) under specific conditions. The research provides a theoretical basis for the treatment of wastewater containing Se(IV).
