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Experimental and modeling studies were conducted to delineate the reaction progress of chromite ore processing residue (COPR) upon hydration and the roles of brownmillerite and calcium aluminum chromium oxide hydrates (CAC) in the scavenging of hexavalent chromium. A kinetic study was conducted by preparing slurry samples with both synthetic brownmillerite and actual COPR samples at ambient temperatures. The hydration reaction of brownmillerite using synthetic brownmillerite was very fast (within 1 hour) and was completed within 2 days. However, the hydration of brownmillerite embedded in COPR to its hydration byproducts was not clearly observed after 7 days of aging. Newly formed Ca_4Al_2O_6(CrO_4)·14H_2O (CAC-14) was observed after 1 hour of aging in both samples. However, the rate of formation of CAC-14 with synthetic brownmillerite was much faster than the COPR embedded brownmillerite. The reaction progress of synthetic brownmillerite and COPR upon chromate influx was simulated by a reaction path modeling program. The phase transformation of both samples can be predicted by the constructed model. Moreover, the formation of CACs upon chromate addition was predicted by the model, suggesting an effective sink for Cr(VI)

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Preliminary study on dinosaur rib microstructure by applying correlative microscopy techniques Jung-Kyun Kim ,Min Huh ,Seon-Gyu Lee ,Youn-Joong Kim pp.225-235

(The)effects of depositional processes on benthic foraminiferal taphonomy in the Southeastern Yellow Sea of Korea Da Un Jeong ,Jin Yong Choi ,Yeon Gyu Lee pp.237-255

Holocene vegetation dynamics and its climatic implications inferred from pollen record in Boseong area, South Korea Chull-Hwan Chung pp.257-264

Hydrate growth in granular materials : implication to hydrate bearing sediments Tae Sup Yun, J. Carlos Santamarina pp.265-273

Geochemical characteristics of calcareous and non-calcareous shales from the meso-neoproterozoic basins of the bastar craton, central Indian shield : implications for provenance, tectonic setting, paleoweathering and paleoredox conditions Hamidullah Wani, Mohammad Erfan Ali Mondal pp.275-286

Impact of brownmillerite hydration on Cr(Ⅵ) sequestration in chromite ore processing residue Deok Hyun Moon ,Mahmoud Wazne pp.287-296

Sensitivity analysis of marine controlled-source electromagnetic methods to a shallow gas-hydrate layer with 1D forward modeling Ki Ha Lee ,Hangilro Jang ,Hannuree Jang ,Hee Joon Kim pp.297-303

(A)capillary number for physical displacement of TCE-DNAPL trapped in a rough-walled fracture Hang-Bok Lee ,In Wook Yeo ,Sung-Hoon Ji ,Kang-Kun Lee pp.305-311

In-situ biosurfactant flushing, coupled with a highly pressurized air injection, to remediate the bunker oil contaminated site Minhee Lee ,Jongsung Kim ,Insu Kim pp.313-321

Identification of aquifer system in the whole Red River delta, Vietnam Duong Du Bui, Akira Kawamura, Thanh Ngoc Tong, Hideo Amaguchi, Naoko Nakagawa, Yoshihiko Iseri pp.323-338

Waste disposal on karstic terrain : a case study from the ancient marble quarries in Iznik(Nicaea), Turkey Celalettin Simsek, Ali Bahadir Yavuz, Hakan Elci, Alper Elci, Orhan Gunduz pp.339-348

참고문헌 (25건) : 자료제공( 네이버학술정보 )

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번호 참고문헌 국회도서관 소장유무
1 Allied Signal, 1982, Process Description-Baltimore Works. 미소장
2 Chromite Ore Processing Residue in Hudson County, New Jersey 네이버 미소장
3 Studies of Early Stages of Paste Hydration of Cement Compounds, II 네이버 미소장
4 New Orleans Labs Start Their Uncertain Comeback 네이버 미소장
5 Chrysochoou, M., Moon, D.H., Dermatas, D., Wazne, M., Christodoulatos,C., Meng, X., Kaouris, M., Morris, J., French, C., andSass, B., 2005b, Mineralogical analysis of Chromite OreProcessing Residue by X-ray Powder Diffraction. In: Proceedingsof the 8th International In Situ and On-Site BioremediationSymposium, Baltimore, Maryland, June 6–9. 미소장
6 Commercial Extraction Technology and Process Waste Disposal in the Manufacture of Chromium chemicals From Ore 네이버 미소장
7 Assessment and Modelling of the Environmental Chemistry and Potential for Remediative Treatment of Chromium-Contaminated Land 네이버 미소장
8 Geochimica et cosmochimica acta 네이버 미소장
9 Calcium polysulfide remediation of hexavalent chromium contamination from chromite ore processing residue 네이버 미소장
10 Higgins, T.E., Halloran, A.R., Dobbins, M.E., and Pittignano, A.J.,1998, In-situ reduction of hexavalent chromium in alkaline soilsenriched with chromite ore processing residue. Air & WasteManagement Association, 48, 1100–1106. 미소장
11 Inorganic Crystal Structure Database, 2005, FachinformationszentrumKarlsruhe, Germany. 미소장
12 International Centre for Diffraction Data (ICDD), 2002, Powder DiffractionFile, PDF-2 Database Release. 미소장
13 Effects of particle size and acid addition on the remediation of chromite ore processing residue using ferrous sulfate 네이버 미소장
14 James, B.R., 1996, The challenge of remediating chromium-contaminatedsoil. Environmental Science & Technology, 30, 248A–251A. 미소장
15 The site occupancy of Mg in the brownmillerite structure and its effect on hydration properties: an X‐ray/neutron diffraction and EXAFS study 네이버 미소장
16 Kremser, D.D., Sass, B.M., Clark, G.I., Bhargava, M., and French,C., 2005, Environmental forensics investigation of buriedchromite ore processing residue. In: Proceedings of the 8th InternationalIn Situ and On-Site Bioremediation Symposium, Baltimore,Maryland, June 6–9. 미소장
17 Material’s Data Inc., 2005, Jade, Version 7.1, California, U.S.A. 미소장
18 Moon, D.H., Chrysochoou, M., Dermatas, D., Christodoulatos, C.,Kaouris, M., and Morris, J., 2005a, Investigation of EttringiteFormation in Chrome Ore Processing Residue. In: Proceedingsof the 8th International In Situ and On-Site Bioremediation Symposium,Baltimore, Maryland, June 6–9. 미소장
19 Moon, D.H., Dermatas, D., Sanchez, A.M., Chrysochoou, M., Wazne,M., and Grubb, D.G., 2008, Assessment of brownmillerite andpericlase hydration in chromite ore processing residue at elevatedtemperature. In: Proceedings of GeoCongress 2008, New Orleans,Louisiana, March 9–12. 미소장
20 Moon, D.H., Dutko, P., Dermatas, D., Chrysochoou, M., Christodoulatos,C., Kaouris, M., and Morris, J., 2005b, Ettringite-InducedLaboratory Swelling in Chromite Ore Processing Residue. In:Proceedings of the 8th International In Situ and On-Site Bioremediation Symposium, Baltimore, Maryland, June 6–9. 미소장
21 A profile refinement method for nuclear and magnetic structures 네이버 미소장
22 Taylor, H.F.W., 1997, The Chemistry of Cement, 2nd edition, AcademicPress, London, 418 p. 미소장
23 Assessment of calcium polysulfide for the remediation of hexavalent chromium in chromite ore processing residue (COPR) 네이버 미소장
24 Chromium leaching behavior in soil derived from chromite ore processing waste 네이버 미소장
25 Wolery, T. and Jarek, R., 2003, EQ3/6 software package, version 8.0. 미소장

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