Article
Engineering, Environmental
Qingchao Liu, Guang Yang, Na Lu, Yanmei Yin, Hui Jia, Jie Wang
Summary: In this study, a novel filter (BFD-filler) prepared using blast furnace dust (BFD) was applied to treat domestic wastewater in a biological aerated filter (BAF). The optimization of reactor operation and the mechanism of BAF enhancement by inner-electrolysis were investigated. The results showed that BFD-BAF achieved significantly higher removal rates of COD and NH4+-N compared to the conventional process, and the addition of BFD-filler affected the bacterial community and enhanced bacterial abundance and specificity in BAF.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Energy & Fuels
Sitong Liu, Wenbo Zhou, Shengli Niu, Kuihua Han, Yongzheng Wang, Chunmei Lu, Ying Li, Jun Wang
Summary: Blast furnace dust (BFD) generated from the ironmaking process causes soil and water pollution. In this study, a selective catalytic reduction (SCR) catalyst was developed using BFD as a raw material. The BFD-400 catalyst showed the best SCR performance with over 90% nitrogen oxides (NOx) conversion in the temperature range of 225°C to 350°C. The catalyst also exhibited excellent resistance to sulfur and water in coal-fired flue gas due to weak adsorption energy calculation.
Article
Construction & Building Technology
Sai Zhang, Jianwen Ding, Chen Guo, Chenhao Li, Shoujie Wang
Summary: This study proposes a new mixing method for treating marine dredged clay (MDC) by pre-hydrating ground granulated blast furnace slag (GGBS) before mixing with cement. The results show that the cemented MDC with GGBS obtains higher strength and lower hydraulic conductivity compared to cement-treated MDC with pure cement.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiangrong Zeng, Ting Xie, Bin Zeng, Lijinhong Huang, Xindong Li, Wanfu Huang
Summary: A micro-electrolysis material prepared from blast furnace dust showed excellent capability in removing organic pollutants.
Article
Environmental Sciences
Xuejin Yang, Binghua Xie, Fang Wang, Ping Ning, Kai Li, Lijuan Jia, Jiayu Feng, Futing Xia
Summary: This paper proposes a waste treatment strategy using blast furnace dust (BFD) for desulfurization, and the experimental results show that BFD can achieve efficient desulfurization and recovery of zinc resources. The possible mechanism of BFD slurry desulfurization is also proposed based on the experimental and characterization results.
Article
Energy & Fuels
Yi-Tong Wang, Xiao-Man Wang, Di Gao, Fu-Ping Wang, Ya-Nan Zeng, Jun-Guo Li, Li-Qun Jiang, Qing Yu, Rui Ji, Le-Le Kang, Ya-Jun Wang, Zhen Fang
Summary: In this study, nanocatalysts were prepared from blast furnace dust (BFD) for biodiesel production. The synthesized catalysts showed high activity and recyclability, due to the transition of CaCO3, Na2CO3 and Fe2O3 to nanocrystals. The study found that BFD is an ideal raw material for synthesizing biodiesel catalysts with high catalytic efficiency and easy separation, providing a practical utilization of industrial solid waste.
Article
Environmental Sciences
Binghua Xie, Na Geng, Qian Yu, Di He, Fang Wang, Tiancheng Liu, Jiyun Gao, Ping Ning, Xin Song, Lijuan Jia
Summary: The study proposed a novel desulfurization method using blast furnace dust slurry to control SO2 emission and achieve waste control targets, with optimal conditions yielding 100% desulfurization efficiency. Response surface methodology results indicated the significant influence of oxygen concentration on SO2 removal efficiency. The potential desulfurization mechanism of blast furnace dust was proposed, providing a promising and low-cost desulfurization technology.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Daniel J. C. Stewart, David Thomson, Andrew R. Barron
Summary: Zinc-contaminated steelmaking by-products pose a recycling challenge, but Rotary Hearth Furnaces offer a solution by recovering iron and zinc through carbothermal reduction. New RHF processes like ITmk3 and e-nugget produce pig iron nuggets from iron ore concentrates and coal, achieving quality separation of iron and gangue without additional melting units. Computational studies show that high-quality pig iron nuggets can be produced from BF dust and BOS dust with the addition of SiO2 and MgO at a specific temperature.
RESOURCES CONSERVATION AND RECYCLING
(2021)
Article
Engineering, Environmental
Xingguo Luo, Chenyu Wang, Xianguo Shi, Xingbin Li, Chang Wei, Minting Li, Zhigan Deng
Summary: Selective separation and recovery of zinc and iron/carbon from blast furnace dust have been achieved using a NaCl-HCl-H2O system. Up to 93.2% of zinc could be leached, while iron and carbon were enriched and recovered as secondary resources.
Article
Engineering, Environmental
Lei Ye, Zhiwei Peng, Qing Ye, Liancheng Wang, Robin Augustine, Mauricio Perez, Yong Liu, Mudan Liu, Huimin Tang, Mingjun Rao, Guanghui Li, Tao Jiang
Summary: This study introduces a novel method for producing DRI powders through microwave-assisted self-reduction of core-shell composite pellets composed of BF dust and hazardous EAF dust, followed by magnetic separation. The results demonstrate the efficient utilization of BF and EAF dust, showcasing higher removal percentages of zinc and lead in comparison with conventional methods, and providing a potential solution for environmentally friendly comprehensive waste management in the iron and steel industry.
Article
Chemistry, Multidisciplinary
Marco Boscolo, Elio Padoano, Lucia Parussini, Nicola Petronelli, Vincenzo Dimastromatteo, Silvia Nazzarri
Summary: This article presents a solution used in an existing blast furnace to minimize dust and gas emissions to the atmosphere during emergency relief. The new relief system, engineered with a Computational Fluid Dynamic (CFD) analysis, reduces the need for plant modifications while improving the safety operation of the blast furnace.
APPLIED SCIENCES-BASEL
(2022)
Article
Materials Science, Multidisciplinary
Yingying Han, Lichun Xiao, Hongrui Chen
Summary: Wet electrostatic precipitators (WESPs) are widely used in iron and steel plants and coal-fired power plants for their high efficiency in capturing fine particles. This study proposes an improved method by adding a chemical coagulant and a surfactant to enhance the dust removal efficiency of WESPs. The results show that the addition of a chemical coagulant and surfactant promotes the agglomeration of dust particles and improves the dust capture effect of WESPs. Further studies will be conducted to investigate the multi-factor synergistic coupling effect on the chemical coagulation method in WESPs.
Article
Green & Sustainable Science & Technology
Haemin Song, Juan Yu, Jae Eun Oh, Jung-Il Suh
Summary: The study focuses on the development of lightweight cementitious binders to replace autoclaved aerated concrete blocks and improve the efficiency of buildings for carbon neutrality. Fly ash and fly ash cenosphere activated with Ca(OH)(2) and Na2CO3 binders were assessed for their mechanical properties and further characterized for microstructure and thermal performance. The results showed that increasing the content of fly ash cenosphere increased the porosity of the hardened matrix and reduced the weight of the binders. Additionally, the thermal conductivity of the binders was significantly reduced, increasing their thermal efficiency.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Ji Yeon Lim, Yeong Gyeong Kang, Keon Mok Sohn, Pil Joo Kim, Snowie Jane C. Galgo
Summary: Silicate fertilizer can effectively suppress CH4 emissions, increase rice grain yield and quality, improve soil properties, and have beneficial effects on rice paddy environments in the long term without accumulation of hazardous materials.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Sergey A. Stel'makh, Evgenii M. Shcherban, Alexey N. Beskopylny, Levon R. Mailyan, Besarion Meskhi, Nikita Beskopylny, Natal'ya Dotsenko, Maria Kotenko
Summary: This study aimed to investigate the influence of certain formulation factors on the structure formation and properties of non-autoclaved aerated concrete. The results showed that replacing part of the cement with microsilica improved the strength characteristics of the concrete, while adding granulated blast-furnace slag and complex additives did not significantly affect thermal conductivity. Analysis of the microstructure confirmed that the addition of microsilica improved the microstructure of the concrete.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Chemical
Arvin Sohrabi, Mousa Meratizaman, Shuli Liu
Summary: This paper simulates and discusses possible solutions to improve the economic and technical performances of a battery-less renewable energy-powered BWRO system under real climate conditions. The study finds that the photovoltaic-based system performs better in terms of specific energy consumption and unused energy ratio.
Article
Engineering, Chemical
Chunlan Pan, Xiaoyin Hu, Vishal Goyal, Theyab R. Alsenani, Salem Alkhalaf, Tamim Alkhalifah, Fahad Alturise, Hamad Almujibah, H. Elhosiny Ali
Summary: This paper introduces a novel waste heat recovery method using the hot flue gas from a ship's engine to produce liquefied hydrogen while meeting the ship's air-conditioning requirement. A comprehensive feasibility assessment is conducted and an artificial neural network with a multiobjective grey wolf optimization method is used for optimization. The findings indicate the highest mean sensitivity index of the flash temperature and the best optimization scenario for exergy efficiency, CO2 emission reduction, and liquefied hydrogen cost.
Article
Engineering, Chemical
Daniele Chinello, Jan Post, Louis C. P. M. de Smet
Summary: In this study, PVDF-based anion-exchange membranes were designed to selectively separate nitrate from chloride. Experimental data showed that increasing the concentration of PVDF enhanced nitrate transport but also increased the membrane electrical resistance. The selectivity of nitrate was found to be independent of the membrane thickness and mainly driven by the increased affinity between the anion and the membrane.
Article
Engineering, Chemical
Umar Noor, Muhammad Fayyaz Farid, Ammara Sharif, Amna Saleem, Zubair Nabi, Muhammad Furqan Mughal, Kiran Abbas, Toheed Ahmed
Summary: Global water scarcity is increasing, and water desalination is an important solution. Multifunctional advanced materials, such as membrane materials and solar-driven desalination, play a crucial role in water desalination. Additionally, these materials can be used for water purification, wastewater treatment, and pollutant elimination.
Article
Engineering, Chemical
Emrah Gumus
Summary: With growing global concerns about climate change and environmental impacts, the use of nuclear energy in naval vessels offers a cleaner and more efficient solution to reduce emissions and address water and energy supply challenges. This study explores a novel system that combines a nuclear-driven supercritical carbon dioxide power cycle with reverse osmosis cogeneration to meet the water and electricity demands in maritime operations, enhancing the sustainability, efficiency, and self-sufficiency of naval vessels. The results indicate that the system has the potential to be a viable and effective solution for naval operations.
Article
Engineering, Chemical
Dao Thi Thanh Huyen, Saikat Sinha Ray, Young -Nam Kwon
Summary: This study focuses on the modification of a commercially available polyamide thin-film composite membrane with a zwitterionic material to enhance its fouling resistance. The modified membrane shows improved salt rejection and reduced permeability compared to the pristine membrane. Fouling tests demonstrate that the modified membrane has a lower fouling ratio and higher recovery ratio. The enhanced antifouling characteristics are attributed to the improved hydrophilicity resulting from the zwitterionic brushes and the salting-in effect.
Article
Engineering, Chemical
Niklas Koeller, Lukas Mankertz, Selina Finger, Christian J. Linnartz, Matthias Wessling
Summary: This study presents a methodology to scale up Flow-electrode Capacitive Deionization (FCDI) technology from lab-scale to pilot-scale systems. By increasing membrane area and using a stacking approach, the FCDI modules were successfully scaled up and achieved a salt transfer rate comparable to lab-scale systems. This provides a foundation for future assessments of energy demand and economics.
Article
Engineering, Chemical
Mona Gulied, Sifani Zavahir, Tasneem Elmakki, Hyunwoong Park, Guillermo Hijos Gago, Ho Kyong Shon, Dong Suk Han
Summary: This study introduces a novel hybrid system that combines direct contact membrane distillation (DCMD) and electrically switched ion exchange (ESIX) to facilitate seawater reverse osmosis (SWRO) brine enrichment and selective lithium recovery.
Article
Engineering, Chemical
Zhiqiang Zhang, Ruifeng Deng, Jiao Zhang, Lu She, Guangfeng Wei, Renyong Jia, Pengyu Xiang, Siqing Xia
Summary: A transmembrane electro-chemisorption system with authigenic acid and base was developed for enhancing ammonia recovery from strong ammonia wastewater. The system efficiently transformed ammonium into free ammonia, which was then adsorbed and recovered through transmembrane chemisorption. This system yielded pure (NH4)2SO4 product and produced valuable byproducts of pure hydrogen and oxygen. Higher applied voltage resulted in better ammonia recovery.
Article
Engineering, Chemical
Alena Popova, Sandrine Boivin, Takuji Shintani, Takahiro Fujioka
Summary: This study aimed to produce a high-integrity RO membrane by forming a polyamide skin layer on a TE support layer, in order to enhance the integrity of the membrane and improve the microbiological safety of potable water reuse.
Article
Engineering, Chemical
Sanjana Yagnambhatt, Saber Khanmohammadi, Jonathan Maisonneuve
Summary: This study investigates the concept of using heat to enhance reverse osmosis (RO) desalination. The effect of temperature on water permeate flux, specific energy, permeate quality, and applied operating pressures is evaluated using an analytical model. The results suggest that under specific conditions, the tradeoff between savings in mechanical pump work and thermal energy input in thermally-enhanced RO can be favorable, leading to overall energy savings.
Article
Engineering, Chemical
Jiangju Si, Chenrui Xue, Shun Li, Linchao Yang, Weiwei Li, Jie Yang, Jihong Lan, Ningbo Sun
Summary: To meet the huge demand for lithium resources, there is an urgent need to develop a new efficient technology for lithium recovery from salt-lake brines. In this study, a selective membrane capacitive deionization system is reported, which achieves high lithium recovery capacity and rate through the use of materials with efficient intercalated pseudo-capacitance and a high specific area porous carbon. The use of a modified thin-coated membrane allows for selective Li+ recovery, and adjusting the concentrations of Li+ and Mg2+ in the feed solution enables higher Li+/Mg2+ selectivity.
Article
Engineering, Chemical
Mohamed R. Salem, R. Y. Sakr, Ghazy M. R. Assassa, Omar A. Aly
Summary: This research proposes a new method of using wasted thermal energies as an additional heating source for solar still distillation units (SSDUs) to increase productivity and reduce pollution and global warming. By testing two SSDUs, the study shows that heating airflow can raise temperatures, enhance freshwater production, and improve system thermal efficiency.
Article
Engineering, Chemical
Qimeng Sun, Miao Sun, Linyan Yang, Yuan Gao, Xinghai Zhou, Lihua Lyu, Chunyan Wei
Summary: This study presents an innovative design and fabrication of a fabric-based conical roll (FCR) evaporator, which enables low-temperature evaporation and achieves high evaporation efficiency with excellent thermal management ability. The evaporator has demonstrated advanced light-harvesting capability and can produce freshwater that meets drinking water standards, showing great potential for applications in desalination and sewage treatment.
Article
Engineering, Chemical
Yidong Zhang, Wangfang Deng, Meiyan Wu, Chao Liu, Guang Yu, Qiu Cui, Pedram Fatehi, Chunlin Xu, Bin Li
Summary: In this study, a novel polydopamine-functionalized lignin-containing pulp foam evaporator with high-efficiency desalination and multi-contaminant adsorption capabilities was designed. The foam evaporator showed excellent light absorption, water absorption, thermal conductivity, and chelation abilities, allowing for solar evaporation and contaminant adsorption synergistically. It also exhibited potential applications in metal ion concentration and contaminated seawater treatments, and demonstrated superior biodegradability compared to poly-styrene foam. This foam material holds promise for developing multifunctional photo-thermal systems for solar-driven water purification.