4 results on '"Culshaw, MG"'
Search Results
2. Evaluation of heterogeneous sulfide – rich mine tailings as secondary raw materials: a case study in the Mirdita District (Northern Albania)
- Author
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Altiner, Y, Arad, V: Bandrova, T, Becker, M, Bednarik, M, Cala, M, Chikhradze, N, Culshaw, MG, Dabas, M, Doronzo, D, Drusa, M, Ferrero, AM, Gisladottir, G, Gokceoglu, C, Gospodinov, S, Gwalani, LG, Hamimi, Z, Hasanov, H, Kahriman, A, Karamanov, A, Lamoreaux, J, Lee, S, L'Heureux, J-S, Lundqvis, J, Kusakabe, O, Marschalko, M, Mentes, G, Parise, M, Piper, JD, Pradhan, B, Lo Presti, D, Riazi, MR, Sappa, G, Segalini, A, Sengupta, S, Sonmez, H, Tugrul, A, Ulusay, R, Van Westen, CJ, Verma, SP, De Vivo, B, De Weale, J, Weber, J, Wu, W, Yilmaz, I, Zhang, DD, Zheng, Z, Fantone, I, Grieco, G, Cavallo, A, CAVALLO, ALESSANDRO, Altiner, Y, Arad, V: Bandrova, T, Becker, M, Bednarik, M, Cala, M, Chikhradze, N, Culshaw, MG, Dabas, M, Doronzo, D, Drusa, M, Ferrero, AM, Gisladottir, G, Gokceoglu, C, Gospodinov, S, Gwalani, LG, Hamimi, Z, Hasanov, H, Kahriman, A, Karamanov, A, Lamoreaux, J, Lee, S, L'Heureux, J-S, Lundqvis, J, Kusakabe, O, Marschalko, M, Mentes, G, Parise, M, Piper, JD, Pradhan, B, Lo Presti, D, Riazi, MR, Sappa, G, Segalini, A, Sengupta, S, Sonmez, H, Tugrul, A, Ulusay, R, Van Westen, CJ, Verma, SP, De Vivo, B, De Weale, J, Weber, J, Wu, W, Yilmaz, I, Zhang, DD, Zheng, Z, Fantone, I, Grieco, G, Cavallo, A, and CAVALLO, ALESSANDRO
- Abstract
Sulphide-rich tailings constitute a major environmental concern due to the acid drainage (AD) production and release of potentially toxic elements (PTE). Therefore, the management of active mine dumps and the reclamation of inactive ones require to reduce the exposure of the possible environmental receptors to contamination. A common, critical feature of mine dumps is the heterogeneity of the tailing materials that may complicate the quantitative prediction of potential contamination. On the other hand, heterogeneity can be a key for a more rational and cost-effective remediation, given a good characterization of the dump materials. Moreover, mine wastes often contain valuable components and therefore a suitable solution is to make positive use of them. In fact, as mining and processing (comminution and concentration) constitute a major cost of the ore mineral cycle, the availability of partly-processed, although low-grade resources may represent an interesting opportunity of exploitation. The present work is a case-study for a quantitative flow-sheet-related approach to the aim of heterogeneous sulphide-rich tailing dumps management. We selected the former processing site of Reps, in the Mirdita District (northern Albania), where we characterized two tailing dumps and assessed the contamination. Moreover, we evaluated the concentration potential of commodities, namely pyrite and gold, from the tailing materials. We analysed the Reps tailing samples in order to evaluate mineralogy, grain size and bulk chemical composition, concentration of PTE, the presence and persistence of AD. The data set splits in two classes, based on the sulphide content. The reconstruction of the former processing flow-sheet allowed us to recognize this pattern as resulting from two distinct processing stages and to quantitatively improve the AD prediction results. We selected a shaking table concentration method for testing separation of pyrite and gold, by taking into consideration the nee
- Published
- 2015
3. Evaluation of heterogeneous sulfide – rich mine tailings as secondary raw materials: a case study in the Mirdita District (Northern Albania)
- Author
-
Fantone, I, Grieco, G, CAVALLO, ALESSANDRO, Altiner, Y, Arad, V: Bandrova, T, Becker, M, Bednarik, M, Cala, M, Chikhradze, N, Culshaw, MG, Dabas, M, Doronzo, D, Drusa, M, Ferrero, AM, Gisladottir, G, Gokceoglu, C, Gospodinov, S, Gwalani, LG, Hamimi, Z, Hasanov, H, Kahriman, A, Karamanov, A, Lamoreaux, J, Lee, S, L'Heureux, J-S, Lundqvis, J, Kusakabe, O, Marschalko, M, Mentes, G, Parise, M, Piper, JD, Pradhan, B, Lo Presti, D, Riazi, MR, Sappa, G, Segalini, A, Sengupta, S, Sonmez, H, Tugrul, A, Ulusay, R, Van Westen, CJ, Verma, SP, De Vivo, B, De Weale, J, Weber, J, Wu, W, Yilmaz, I, Zhang, DD, Zheng, Z, Fantone, I, Grieco, G, and Cavallo, A
- Subjects
Shaking table ,sulfide-rich tailing ,heterogeneous mine waste ,Mirdita District ,secondary raw material ,GEO/09 - GEORISORSE MINERARIE E APPLICAZIONI MINERALOGICO-PETROGRAFICHE PER L'AMBIENTE E I BENI CULTURALI - Abstract
Sulphide-rich tailings constitute a major environmental concern due to the acid drainage (AD) production and release of potentially toxic elements (PTE). Therefore, the management of active mine dumps and the reclamation of inactive ones require to reduce the exposure of the possible environmental receptors to contamination. A common, critical feature of mine dumps is the heterogeneity of the tailing materials that may complicate the quantitative prediction of potential contamination. On the other hand, heterogeneity can be a key for a more rational and cost-effective remediation, given a good characterization of the dump materials. Moreover, mine wastes often contain valuable components and therefore a suitable solution is to make positive use of them. In fact, as mining and processing (comminution and concentration) constitute a major cost of the ore mineral cycle, the availability of partly-processed, although low-grade resources may represent an interesting opportunity of exploitation. The present work is a case-study for a quantitative flow-sheet-related approach to the aim of heterogeneous sulphide-rich tailing dumps management. We selected the former processing site of Reps, in the Mirdita District (northern Albania), where we characterized two tailing dumps and assessed the contamination. Moreover, we evaluated the concentration potential of commodities, namely pyrite and gold, from the tailing materials. We analysed the Reps tailing samples in order to evaluate mineralogy, grain size and bulk chemical composition, concentration of PTE, the presence and persistence of AD. The data set splits in two classes, based on the sulphide content. The reconstruction of the former processing flow-sheet allowed us to recognize this pattern as resulting from two distinct processing stages and to quantitatively improve the AD prediction results. We selected a shaking table concentration method for testing separation of pyrite and gold, by taking into consideration the need of reducing both costs and volumes. The effectiveness of the method was verified by monitoring both the feed and the output materials for grain size, geochemical and mineralogical parameters. The optimal grain size of the input samples was obtained through a closed-circuit regrinding and milling method. The concentrate output shows an enrichment in pyrite in all the samples. The concentrates constitute 16-37.4 wt% of the shaking table output, depending on the initial sulphide content of the sample. Au concentration data were gained by Activation Analysis on selected grain size classes, in order to verify the correlation of Au concentration and the particle size distribution. Preliminary data show that in our samples a valuable recovery can be achieved by sieving in order to separate the Au- rich (up to 580 ppb) fine fraction (
- Published
- 2015
4. The role of web-based environmental information in urban planning--the environmental information system for planners.
- Author
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Culshaw MG, Nathanail CP, Leeks GJ, Alker S, Bridge D, Duffy T, Fowler D, Packman JC, Swetnam R, Wadsworth R, and Wyatt B
- Subjects
- Decision Making, Internet, United Kingdom, City Planning, Decision Support Techniques, Environment, Information Systems
- Abstract
The Environmental Information System for Planners (EISP) is a proof of concept web-based system designed to support decision making within the UK planning framework by making information on environmental issues more widely accessible. It incorporates relevant outputs from the Natural Environment Research Council (NERC) Urban Regeneration and the Environment (URGENT) research programme and from research directly commissioned by the Office of the Deputy Prime Minister (ODPM). It supports three principal planning functions carried out by local authorities: pre-planning enquiries, development control decisions and strategic planning. Eleven environmental science themes are incorporated: Air quality, Shallow undermining, Landslide susceptibility, Groundwater protection, Flood risk, Drainage, Land contamination, Proximity to landfill, Biodiversity, Natural and Man-made heritage. Decision flow diagrams represent detailed analysis of workflow in each theme, taking account of best practice, regulatory responsibilities and planning guidance. Industry-standard web technologies integrate the flows and provide access to the system via secure web pages. Underpinning the system is an environmental geographical information system (GIS) containing up-to-date data, information and models relevant to each theme. The modular system design allows new legislation and local priorities and datasets to be easily incorporated. Web technology delivers information and research data that have hitherto been difficult for the non-specialist to access and have therefore been under-exploited. The study has demonstrated a successful application of the principles of e-Governance in an area where informed decisions commonly require specialist information. The system, if rolled out nationally, offers potential economic benefits and efficiency savings for both planners and developers.
- Published
- 2006
- Full Text
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