The Experts below are selected from a list of 37539 Experts worldwide ranked by ideXlab platform
Li Choung Chiang - One of the best experts on this subject based on the ideXlab platform.
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Reuse of heavy metal-containing sludges in Cement Production
Cement and Concrete Research, 2005Co-Authors: Pai Haung Shih, Hsing Cheng Lu, Juu En Chang, Li Choung ChiangAbstract:The feasibility of the replaCement of raw material for Cement Production by heavy metal-containing sludge from surface finishing and electroplating industries was investigated. The effect of heavy metal content in the Cement raw mix on the crystalline formation in Cement Production was also examined by XRD analyses. It was found that both sludges were applicable for the replaCement of raw mix for Cement Production by moderate conditioning of the sludge compositions with several compositional parameters. As the replaCement of raw mix by sludge was within 15%, the formation of tricalcium silicate (C 3S) phase in Cement would be enhanced by the introduced heavy metals. While owing to a high level of heavy metals concentration (> 1.5%) in Cement raw mix, C3S crystalline in Cement would be inhibited by a large sludge replaCement (> 15%). During the sintering process, over 90% of the high volatile elements such as Pb would evaporate in high temperature, yet 90% of the less volatile elements such as Cu, Cr and Ni would be trapped in clinkers. Most of all, the results of leaching test shows that the trapped elements in hydrated samples would not leach out under acidic conditions. The reuse of heavy metal-containing sludges as Cement raw material would not cause leaching hazard from sintered clinkers. Heavy metal-containing sludges thus should have the potential to be utilized as alternative raw materials in Cement Production. © 2005 Published by Elsevier Ltd.
Sezgi Kumbaracibasi - One of the best experts on this subject based on the ideXlab platform.
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Approaches for sustainable Cement Production – A case study from Turkey
Energy and Buildings, 2013Co-Authors: Ozgur Ekincioglu, Asli Pelin Gurgun, Yasin Engin, Muhittin Tarhan, Sezgi KumbaracibasiAbstract:Abstract One of the keys to achieve the sustainable construction goals in green projects is to select appropriate building materials for construction. Such projects aim to use eco-friendly materials that encourage the consumption of recycled and renewable materials, locally manufactured with less harmful gas emissions with long and durable profiles. Using these eco-friendly materials is also helpful for obtaining higher rates during the application processes of green building certificates. As the demand for sustainable materials increases globally, the construction material producers need to supply materials that can be used in environmentally responsible buildings without compromising ecological conditions. In particular, Cement Production has a huge impact on the environment because of releasing high amount of CO2 during Production processes. This paper aims to express the sustainability of building materials in Turkish construction industry through analyzing Cement Production of a Turkish Cement company where alternative fuels, raw materials, by-products and energy efficient methods are used for sustainable development.
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approaches for sustainable Cement Production a case study from turkey
Energy and Buildings, 2013Co-Authors: Ozgur Ekincioglu, Asli Pelin Gurgun, Yasin Engin, Muhittin Tarhan, Sezgi KumbaracibasiAbstract:Abstract One of the keys to achieve the sustainable construction goals in green projects is to select appropriate building materials for construction. Such projects aim to use eco-friendly materials that encourage the consumption of recycled and renewable materials, locally manufactured with less harmful gas emissions with long and durable profiles. Using these eco-friendly materials is also helpful for obtaining higher rates during the application processes of green building certificates. As the demand for sustainable materials increases globally, the construction material producers need to supply materials that can be used in environmentally responsible buildings without compromising ecological conditions. In particular, Cement Production has a huge impact on the environment because of releasing high amount of CO2 during Production processes. This paper aims to express the sustainability of building materials in Turkish construction industry through analyzing Cement Production of a Turkish Cement company where alternative fuels, raw materials, by-products and energy efficient methods are used for sustainable development.
Pai Haung Shih - One of the best experts on this subject based on the ideXlab platform.
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Reuse of heavy metal-containing sludges in Cement Production
Cement and Concrete Research, 2005Co-Authors: Pai Haung Shih, Hsing Cheng Lu, Juu En Chang, Li Choung ChiangAbstract:The feasibility of the replaCement of raw material for Cement Production by heavy metal-containing sludge from surface finishing and electroplating industries was investigated. The effect of heavy metal content in the Cement raw mix on the crystalline formation in Cement Production was also examined by XRD analyses. It was found that both sludges were applicable for the replaCement of raw mix for Cement Production by moderate conditioning of the sludge compositions with several compositional parameters. As the replaCement of raw mix by sludge was within 15%, the formation of tricalcium silicate (C 3S) phase in Cement would be enhanced by the introduced heavy metals. While owing to a high level of heavy metals concentration (> 1.5%) in Cement raw mix, C3S crystalline in Cement would be inhibited by a large sludge replaCement (> 15%). During the sintering process, over 90% of the high volatile elements such as Pb would evaporate in high temperature, yet 90% of the less volatile elements such as Cu, Cr and Ni would be trapped in clinkers. Most of all, the results of leaching test shows that the trapped elements in hydrated samples would not leach out under acidic conditions. The reuse of heavy metal-containing sludges as Cement raw material would not cause leaching hazard from sintered clinkers. Heavy metal-containing sludges thus should have the potential to be utilized as alternative raw materials in Cement Production. © 2005 Published by Elsevier Ltd.
Xiangzhi Li - One of the best experts on this subject based on the ideXlab platform.
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environmental assessment of sewage sludge as secondary raw material in Cement Production a case study in china
Waste Management, 2011Co-Authors: Jinglan Hong, Xiangzhi LiAbstract:A life cycle assessment was carried out to estimate the environmental impact of sewage sludge as secondary raw material in Cement Production. To confirm and add credibility to the study, uncertainty analysis was conducted. Results showed the impact generated from respiratory inorganics, terrestrial ecotoxicity, global warming, and non-renewable energy categories had an important contribution to overall environmental impact, due to energy, clinker, and limestone Production stages. Also, uncertainty analysis results showed the technology of sewage sludge as secondary raw material in Cement Production had little or no effect on changing the overall environmental potential impact generated from general Cement Production. Accordingly, using the technology of sewage sludge as secondary raw material in Cement Production is a good choice for reducing the pressure on the environment from dramatically increased sludge disposal. In addition, increasing electricity recovery rate, choosing natural gas fired electricity generation technology, and optimizing the raw material consumption in clinker Production are highly recommended to reduce the adverse effects on the environment.
Wenjuan Chen - One of the best experts on this subject based on the ideXlab platform.
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environmental impact analysis of blast furnace slag applied to ordinary portland Cement Production
Journal of Cleaner Production, 2016Co-Authors: Yao Li, Xianzheng Gong, Zhi Hong Wang, Wenjuan ChenAbstract:Abstract This study was conducted based on the ISO 14040/14044 standards to analyze the environmental impact caused by blast furnace slag utilization for ordinary Portland Cement Production in typical plants in Beijing. In addition, sensitivity analysis of resource consumption, transport distance, the allocation methods and life cycle impact assessment model were discussed in detail. The results showed that global warming potential and acidification potential were the most significant environmental impacts resulted by slag-based Cement Production, accounting for 58.5% and 21.7% of the total environmental impact, respectively. Moreover, the Cement Production and energy generation phases accounted for 66.6% and 29.6% of total environmental loads of slag-based Cement from cradle to gate, respectively. Sensitivity analysis showed that the comprehensive environmental impact of slag-based Cement was sensitive to the consumption of limestone and energy, as well as the allocation methods and life cycle impact assessment model; but was insensitive to the consumption and transport distance of blast furnace slag. Compared with traditional Portland Cement, except for the approximately 9% increase of human toxicity potential, the other impacts of slag-based Cement decreased to a certain extent. In particular, abiotic depletion potential and land use potential significantly reduced by 72% and 41%, respectively. Therefore, producing Cement with blast furnace slag would slightly increase electricity consumption, but significantly improve the benefits of land resource and materials conservation and significantly decrease the comprehensive environmental impact of Cement.