Article
Materials Science, Multidisciplinary
Wen-feng Gu, Jiang Diao, Liang Liu, Wen-sun Ge, Hong-yi Li, Bing Xie
Summary: The air-quenched steel slag (AQSS) produced through air-quenching process showed main phases of Ca2SiO4, RO phase, and Ca2Fe2O5, meeting technical requirements for a sandblasting abrasive. With a Rockwell hardness exceeding 50.00 HRC for particle size of 1.0-3.0 mm, AQSS is particularly suitable for sandblasting applications. Analysis and comparison with commonly used sandblasting abrasives suggest that AQSS can effectively be utilized as a sandblasting abrasive.
Article
Construction & Building Technology
Deqiang Zhao, Weiguo Shen, Yanan Wang, Yi Yang, Wensheng Zhang, Qilin Shi, Yulian Deng, Junchuan Lu, Yang Deng
Summary: Multi-phased sintering technology directly uses granular steel slag to calcinate cement clinker. The study synthesized a high-content steel slag multi-phased clinker and investigated its sintering mechanism and properties. It was found that the diffusion of the molten liquid phase of steel slag affected the crystallization and growth of clinker mineral, resulting in the formation of a gradient distribution high-ferrite multi-phased clinker. Laboratory tests showed that the multi-phased clinker with high steel slag content was technically viable and had exceptional properties.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Yu Ma, Binbin Zhang, Benjun Wang, Xujian Lin, Jianqin Zhu, Ping Huang, Tao Ji
Summary: The performance of alkali-activated slag/stainless steel slag mortar (ASM) prepared with a composite activator was investigated in order to make efficient use of steel slag and reduce carbon emissions. The results showed that the mechanical properties of ASM decreased and then increased as the water glass (WG) content increased, with the worst properties occurring at 0.5% WG content. The autogenous shrinkage of ASM decreased initially and then increased as the WG content increased, while the drying shrinkage of ASM increased with increasing WG content.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Xiaoli Xiong, Zhengxian Yang, Xueyuan Yan, Yong Zhang, Shilin Dong, Kang Li, Bruno Briseghella, Giuseppe Carlo Marano
Summary: In this study, steel slag (SS) and ground granulated blast furnace slag (GGBFS) were introduced into engineered cementitious composites (ECC) to reduce the reliance on cement. The effects of SS and GGBFS content on the mechanical performance of ECC were analyzed at macro and micro scales. It was found that SS enhanced fiber dispersion and the combination of GGBFS and SS achieved ideal toughness. Substituting 30% SS and 30% GGBFS for cement led to a significant reduction in energy consumption and CO2 emissions of ECC.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Saeid Ghorbani, Yubo Sun, Manu K. Mohan, Stijn Matthys
Summary: Reusing and recycling waste materials in construction can have positive impacts on the environment and economy. This study focuses on the use of three industrial by-products (metallurgical slags) - copper slag (CS), stainless steel slag (SS), and ground granulated blast furnace slag (GGBFS) - as solid precursors to produce binary blend alkali activated materials (AAMs). The behavior of the mixtures was analyzed in terms of flow spread, compressive and flexural tensile strengths, porosity, and water absorption. Partially replacing GGBFS with CS or SS improved workability properties of the mixture, but reduced its strength. However, the 28-day compressive strength of the studied mixtures remained higher than 50 MPa. The capillary porosity of the specimens increased with higher contents of CS or SS. The water absorption results were influenced by the drying temperature used in the test method. Overall, replacing GGBFS with CS or SS up to 50% showed promise.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Chemistry, Physical
Bo Song, Zhaoyang Wang, Junfeng Li, Yanan Ma
Summary: A particle electrode was synthesized from kaolin and steel slag, with optimized preparation conditions resulting in significantly improved electrocatalytic activity for degrading methylene blue in a 3D electrochemical oxidation reactor compared to a 2D reactor. The kaolin/steel slag particle electrode also exhibited good cycle performance.
CATALYSIS COMMUNICATIONS
(2021)
Article
Construction & Building Technology
Xiaowei Gu, Hongyu Wang, Zhenguo Zhu, Jianping Liu, Xiaochuan Xu, Qing Wang
Summary: In this study, steel slag and lithium slag were used to replace cement, and the properties of composite cementitious materials containing steel slag and lithium slag were investigated. The results showed that the addition of lithium slag improved the compressive strength and hydration of the cementitious material with steel slag. This research provides a solution for utilizing steel slag and contributes to the green utilization of solid waste.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Environmental
Jie Liu, Jihui Zhao, Yunqi Zhao, Yue Zhang, Hewu Zhang, Haiming Zhang, Xiaobo Gu, Guangyin Tian
Summary: This study investigated the synergistic effect of granulated blast furnace slag (GBFS), steel slag (SS) and steel slag mud (SSM) in P.I Portland cement (PC) to improve their utilization. The pozzolanic activity of ternary composite powder (TCP) was evaluated and their mechanical properties, hydration products, microstructure and environmental impacts were discussed. The results showed that the utilization rate of SS and SSM can be improved and the dependence on cement can be reduced through the synergistic effect between GBFSSS-SSM.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Metallurgy & Metallurgical Engineering
Jing-xiong Zhong, Li-ying Cao, Mei Li, Shu-ping Wang, Fang Liu, Xue-wei Lv, Xiao-qin Peng
Summary: Alkali-activated cement (AAC) is an environmentally friendly cement option that can be made without clinker and using industrial wastes such as steel slag and blastfurnace slag. AAC made from a mixture of these wastes exhibited better resistance to sulfate attack and frost attack compared to Portland cement. Despite its high drying shrinkage, the addition of steel slag reduced this issue, and AAC also showed low risk of alkali-aggregate reaction. The major products in AAC were calcium silicate hydrate (C-S-H), calcium aluminosilicate hydrate (C-A-S-H), and zeolite-like phases.
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2023)
Article
Construction & Building Technology
Zhimin Chen, Rui Li, Jiaxiang Liu
Summary: This study investigates the impact mechanism of carbonated steel slag on the properties of cementitious materials, showing that carbonation reaction can reduce the content of free calcium oxide, improve volume stability, and significantly enhance the strength of cementitious materials.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Environmental Sciences
Dang Tung Dang, Manh Tuan Nguyen, Tan Phong Nguyen, Tomoo Isawa, Yasutaka Ta, Ryoichi Sato
Summary: This study confirms the potential of steelmaking slag as mineral aggregates in base/sub-base layer of road pavement, satisfying mechanical and stability requirements with a higher elastic modulus compared to conventional graded aggregates. Therefore, using steelmaking slag can reduce pavement thickness and lower construction costs.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Construction & Building Technology
Emerson Cordeiro Lopes, Taciano Oliveira da Silva, Heraldo Nunes Pitanga, Leonardo Goncalves Pedroti, Jose Maria Franco de Carvalho, Gustavo Henrique Nalon, Eduardo Nery Duarte de Araujo, Klaus Henrique de Paula Rodrigues
Summary: This study evaluated the combined use of electric arc furnace slag fines (EAFSF) and ladle furnace slag fines (LFSF) for soil stabilisation and conducted a detailed microscale analysis. The results showed that a positive synergistic behaviour was observed when combining 10% LFSF and 5% EAFSF, leading to significant improvements in the soil's unconfined compressive strength and CBR index.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
Review
Engineering, Environmental
Eka Oktavia Kurniati, Federico Pederson, Hee-Jeong Kim
Summary: This paper examines and compares widely used industrial by-products such as steel slag, ferronickel slag, copper tailings, and copper slag in the construction industry, focusing on their chemical compositions, concrete performance, and environmental suitability. The study finds that these by-products can enhance specific mechanical properties of concrete when used as substitutes for cement and fine aggregate, and the environmental concerns are evaluated through leaching tests, with most heavy metal contents below specific standards.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Green & Sustainable Science & Technology
Jianfeng Wang, Lei Chang, Deyu Yue, Yongfang Zhou, Hui Liu, Yali Wang, Songge Yang, Suping Cui
Summary: This study investigates the solubilizing ability of alkanolamines on steel slag and their chelating ability with metal ions. The results show that alkanolamines can increase the elemental concentrations in the liquid phase and promote the dissolution of specific mineral phases in steel slag. Among the alkanolamines tested, DEIPA exhibits the strongest and most sustained ability to chelate metal ions. Additionally, alkanolamines can chelate Ca2+, Al3+, and Fe3+ ions, with tertiary alkanolamines showing stronger chelating ability compared to secondary alkanolamines. Alkanolamines with an asymmetric molecular structure also exhibit stronger chelating ability than those with a symmetric molecular structure.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Yi Han, Mengxin Guo, Zhibing Xu, Tianming Fu, Fasong Li, Xiaoding Huang, Nian Liu, Zongwu Chen, Teng Wang
Summary: Steel slag additive inhibits the pyrolysis reaction of raw sludge and influences the gas products. The addition of steel slag helps to create a biochar with good adsorption capacity and thermal stability.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Civil
Sirajuddin Ahmed, Rajkumar Joshi, Sanjeev Kumar
PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-MUNICIPAL ENGINEER
(2020)
Review
Chemistry, Analytical
Nadeem A. Khan, Saif Ullah Khan, Sirajuddin Ahmed, Izharul Haq Farooqi, Mahmood Yousefi, Ali Akbar Mohammadi, Fazlollah Changani
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2020)
Article
Green & Sustainable Science & Technology
Afzal Husain Khan, Nadeem A. Khan, Sirajuddin Ahmed, Aastha Dhingra, Chandra Pratap Singh, Saif Ullah Khan, Ali Akbar Mohammadi, Fazlollah Changani, Mahmood Yousefi, Shamshad Alam, Sergij Vambol, Viola Vambol, Anwar Khursheed, Imran Ali
JOURNAL OF CLEANER PRODUCTION
(2020)
Review
Energy & Fuels
Mahd Zia, Sirajuddin Ahmed, Anil Kumar
Summary: Fruit and vegetable marketplace waste can be used as a single substrate in anaerobic digestion-based biogas plants, especially in subtropical countries like India. Two-phase systems have shown good results in terms of stability, performance, and biogas generation. However, innovative approaches like plug flow tank reactor with passive solar heating need to be researched for optimizing the economics and energy balance. Co-substrates such as food waste and slaughter house wastes can be successfully utilized, but the synergistic relationship among co-substrates and their characteristics should be investigated. Different pre-treatment methods like thermal, ultrasonic, and electrical can be used, but their synergy with co-substrates must be researched to justify the increased cost.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Analytical
Afzal Husain Khan, Hamidi Abdul Aziz, Nadeem Ahmad Khan, Sirajuddin Ahmed, Mohd Salim Mehtab, Sergij Vambol, Viola Vambol, Fazlollah Changani, Saiful Islam
Summary: This paper proposes a sustainable and controllable method for hospital wastewater treatment using the photo-Fenton process, MBBR treatment, and ozonation. The optimal operational parameters were evaluated and satisfactory removal rates of pharmaceuticals in hospital wastewater were achieved. The method is suggested to be implemented in two stages for practical application.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Review
Environmental Sciences
A. H. Khan, H. A. Aziz, N. A. Khan, M. A. Hasan, S. Ahmed, I. H. Farooqi, A. Dhingra, V. Vambol, F. Changani, M. Yousefi, S. Islam, N. Mozaffari, M. S. Mahtab
Summary: Pharmaceutical residues pose a threat to public health and ecological balance, requiring dedicated treatment at the source. These residues have the potential to cause disease outbreaks and eco-toxicological impacts on aquatic organisms.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Mohd Aamir Mazhar, Nadeem A. Khan, Afzal Husain Khan, Sirajuddin Ahmed, Asif Ali Siddiqui, Azhar Husain, Rahisuddin, Vineet Tirth, Saiful Islam, Neeraj Kumar Shukla, Fazlollah Changani, Mahmood Yousefi, Ali Eltom Hassaballa, Neyara Radwan
Summary: This study evaluated the performance of an upgraded sewage treatment plant in Agra, India, and found that the UASB-DHS system had higher removal efficiency for BOD, COD, TSS, and VSS compared to the UASB-FPU system. The cost analysis indicated that the UASB-DHS system is a cost-effective option for municipal wastewater treatment, especially in developing countries.
JOURNAL OF CLEANER PRODUCTION
(2021)
Review
Chemistry, Multidisciplinary
Afzal Husain Khan, Vineet Tirth, Manal Fawzy, Alaa El Din Mahmoud, Nadeem A. Khan, Sirajuddin Ahmed, Syed Sadat Ali, Muhammad Akram, Leena Hameed, Saiful Islam, Gotam Das, Sharmili Roy, Mohammad Hadi Dehghani
Summary: This passage explains the relationship between the new coronavirus that emerged at the end of 2019 and the SARS and MERS viruses in 2002 and 2012, comparing their infectivity and virulence, as well as research on healthcare workers, coronaviruses on surfaces and in wastewater, and measures to prevent spread.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Review
Environmental Sciences
Mohd Najibul Hasan, Mohd Musheer Altaf, Nadeem A. Khan, Afzal Husain Khan, Abid Ali Khan, Sirajuddin Ahmed, P. Senthil Kumar, Mu Naushad, Anushka Upamali Rajapaksha, Jibran Iqbal, Vineet Tirth, Saiful Islam
Summary: In recent years, water scarcity and pollution have become a concern, with nutrient pollution in wastewater leading to eutrophication and reduced oxygen levels in aquatic ecosystems. Traditional biological treatment processes have not effectively removed nutrients, highlighting the need for eco-friendly, low-energy nutrient removal technologies to meet stringent disposal standards.
Article
Environmental Sciences
Majed Alsubih, Rachida El Morabet, Roohul Abad Khan, Nadeem Ahmad Khan, Mansour Ul Haq Khan, Sirajuddin Ahmed, Abdul Qadir, Fazlollah Changani
Summary: This study assessed the groundwater quality in three industrial areas in Delhi, India, and found that arsenic and heavy metal contamination levels were significant, rendering the water unfit for human consumption. Further research is needed to explore control measures to mitigate pollution and achieve sustainable management.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Review
Chemistry, Analytical
Nadeem A. Khan, Sirajuddin Ahmed, Izharul Haq Farooqi, Imran Ali
Summary: The article discusses the application of various technologies in the treatment of pharmaceutical and wastewater. It highlights the need for better technologies to improve removal rates of certain elements that inhibit neurotransmitter activity and proliferation. Additionally, the combination of activated sludge and membrane filtration bioreactors shows higher removal efficiency, while ozonation enhances biodegradability.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Environmental Sciences
Afzal Husain Khan, Hamidi Abdul Aziz, Nadeem A. Khan, Aastha Dhingra, Sirajuddin Ahmed, Mu. Naushad
Summary: The study investigated the seasonal variation of high-priority pharmaceutical residues in the Yamuna River, with most occurrences in the post-monsoon season. The highest concentrations were detected at the last sampling point, indicating high ecotoxicological risks exposure.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Ecology
Nadeem A. Khan, Sirajuddin Ahmed, Izharul Haq Farooqi, Imran Ali
Summary: Pharmaceuticals are now observable in every section of the environment, with hospitals being a major source of pollution. Wastewater treatment plants are not equipped to effectively treat emerging contaminants. Further investigation is needed on the ecotoxic risks associated with high concentrations of pharmaceutical compounds in hospital wastewater.
ECOLOGICAL QUESTIONS
(2021)
Review
Medicine, General & Internal
Mahd Zia, Sirajuddin Ahmed, Anil Kumar
Summary: COVID-19 pandemic has impacted almost all sectors across the world, including the food market. The lockdown measures resulted in supply chain changes and increased wastage globally, especially causing difficulties for farmers and retailers. However, the organic farming industry and online shopping sector have shown some resilience to these challenges.
JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH
(2021)
Article
Water Resources
Shahin Ahmadi, Christian Osagie, Somayeh Rahdar, Nadeem A. Khan, Sirajuddin Ahmed, Hamideh Hajini
APPLIED WATER SCIENCE
(2020)
