All Issue

2020 Vol.29, Issue 2 Preview Page

Research Paper

Spent SCR Catalyst Leach Liquor Processed for Valuable Metals Extraction by Solvent Extraction Technique#

SCR 폐촉매 침출액으로부터 용매추출법에 의한 유가금속의 추출#

Ana Belén Cueva Sola12
,
Jong-Hyuk Jeon1
,
Jin-Young Lee12
,
Pankaj Kumar Parhi13
,
Rajesh Kumar Jyothi12
아나 벨렌 쿠에바 솔라12
,
전 종혁1
,
이 진영12
,
판카즈 쿠마 파리13
,
라제쉬 쿠마 죠티12
1Convergence Research Center for Development of Mineral Resources (DMR), Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 34132, Korea
2University of Science and Technology (UST), Daejeon, 34113, Korea
3KIIT Deemed to be University, Bhubaneswar 751 024, Odisha, India
1한국지질자원연구원 DMR융합연구단
2한국과학기술연합대학원대학교(UST)
3칼링가 산업기술연구소 대학교(KIIT)
#This paper was presented at The 15th International Symposium on east Asian Resources Recycling Technology (EARTH) 2019, Alpensia resort Convention Center, Pyeongchang, Gangwon-do, Korea
*Corresponding Author
30 April 2020. pp. 55-61
PDF XML Citation
Abstract

Selective catalytic reduction (SCR) has been a promising technology to reduce the air pollution caused by nitrogen oxides (NOx) in several industries. The consumption of SCR catalysts increases every year as technology evolves, however those have a limited lifespan and usually end up in landfills after they deactivate. Currently, the most widely used catalyst for and stationary applications is V2O5-WO3/TiO2 which can contain around 50% wt V2O5 and 7-10% wt of WO3. The vast uses for both vanadium and tungsten and the worldwide interest in recycling methods that allow for the extraction of metals from secondary sources represent the major motivation for this research. The extraction time, pH dependency, extraction concentration studies were carried out using Aliquat 336 in exxol D80 as the extractant. It was determined that to optimize the extraction of both metals 30min of contact time with an organic phase containing 0.5mol/L of Aliquat 336 are needed at a slightly acidic pH (~5.0). In addition, counter McCabe-Thiele studies allowed us to determine that one stage is necessary for the removal of 99% of vanadium while 2 stages are necessary for the extraction of tungsten and counter current simulations proved that the theoretical approach was correct.

Keywords
SCR catalyst
vanadium
tungsten
solvent extraction

선택적 촉매 환원법(SCR)은 여러 산업에서 질소산화물 (NOx)에 의한 대기오염을 줄일 수 있는 매우 유망한 기술이다. SCR 촉매의 소비는 기술이 발전함에 따라 매년 증가하고 있지만, 촉매의 수명은 제한되어 있으며, 일반적으로 수명이 다해 활성이 떨어진 폐촉매는 재활용 되지 않고 매립되어 처리되고 있다. 현재 가장 널리 사용되는 촉매는 V2O5-WO3/TiO2로 구성되어 있으며, 약 5%wt의 V2O5와 7-10%wt의 WO3를 함유하고 있다. 본 연구는2차 공급원으로부터 유용 금속을 회수할 수 있는 기술개발에 대한 전세계적인 관심과, 다양한 분야에서의 바나듐 및 텅스텐의 수요에 대한 안정적인 공급을 대비하기 위한 기술개발을 바탕으로 한다. 추출 시간, pH 의존도 및 추출 농도에 대한 연구는 희석제 exxol D80에 추출제로 Aliquat 336을 사용하여 수행되었다. 두 금속의 최적 추출을 위한 조건은 약산성(~5.0) 영역에서 0.5mol/L의 Aliquat 336을 함유한 유기상과 30분 동안 추출 반응을 수행해야 하는 것으로 확인되었다. 또한 counter-McCabe- Thiele 분석으로부터 99%의 바나듐을 제거하기 위해 1단의 단수가 필요하고, 텅스텐의 추출을 위해 2단의 단수가 필요하였으며, 향류추출공정(counter-current simulations) 방식을 통한 이론적 접근의 적합성을 증명하였다.

키워드
SCR 촉매
바나듐
텅스텐
용매추출
References
1
Brunner, P.H., 2011 : Urban mining a contribution to reindustrializing the city, Journal of Industrial Ecology, 15, pp.339-341.
10.1111/j.1530-9290.2011.00345.x
2
Oh, J.-H., Kim, M.-S., Shin, H.-D., et al., 2007 : A study of the research trends and the material flow on the unrecycled materials in Korea - The current situation of recycling technology for waste resources in Korea, Journal of the Korean Institute of Resources Recycling, 16(2), pp.63-76.
3
Kumar, A., Holuszko, M. and Espinosa, D.C.R., 2017 : E-waste: An overview on generation, collection, legislation and recycling practices, Resources, Conservation and Recycling, 122, pp.32-42.
10.1016/j.resconrec.2017.01.018
4
Kim, J.-H., Seo, G.-M., Yang, J.-K., et al.,1998 : Recovery of molybdenum from the desulfurizing spent catalyst, Journal of the Korean Institute of Resources Recycling, 7(2), pp.9-15.
5
Kim, M.-S., Kim, B.-S., Kim, E.-Y., et al., 2011 : Recovery of platinum group metals from the leach solution of spent automotive catalysts by cementation, Journal of the Korean Institute of Resources Recycling, 20(4), pp.36-45.
10.7844/kirr.2011.20.4.036
6
Kim, J.-H. and Yang, J.-G., 1995 : Recovery of valuable metals from the desulfurizing spent catalyst used in domestic petrochemical industry, Journal of the Korean Institute of Resources Recycling, 4(3), pp.2-9.
7
Kim, J.W., Lee, W.G., Hwang, I.S., et al., 2015 : Recovery of tungsten from spent selective catalytic reduction catalysts by pressure leaching, Journal of Industrial and Engineering Chemistry, 28, pp.73-77.
10.1016/j.jiec.2015.02.001
8
Choi, I.H., Moon, G., Lee, J.Y., et al., 2018 : Extraction of tungsten and vanadium from spent selective catalytic reduction catalyst for stationary application by pressure leaching process, Journal of Cleaner Production, 197, pp.163-169.
10.1016/j.jclepro.2018.06.196
9
Jyothi, R.K., Moon, G., Kim, H.-R., et al., 2017 : Spent V2O5-WO3/TiO2 catalyst processing for valuable metals by soda roasting-water leaching, Hydrometallurgy, 175, pp.292-299.
10.1016/j.hydromet.2017.12.010
10
Kim, H.-R., Lee, J.-Y. and Kim, J.-S., 2012 : Leaching of vanadium and tungsten from spent SCR catalysts for De-NOx by soda roasting and water leaching method, Journal of the Korean Institute of Resources Recycling, 21(6), pp.65-73.
10.7844/kirr.2012.21.6.65
11
Huo, Y., Chang, Z., Li, W., et al., 2015 : Reuse and valorization of vanadium and tungsten from waste V2O5-WO3/TiO2 SCR catalyst, Waste and Biomass Valorization, 6, pp.159-165.
10.1007/s12649-014-9335-2
12
Choi, I. H., Moon, G., Lee, J.Y., et al., 2018 : Hydrometallurgical processing of spent selective catalytic reduction (SCR) catalyst for recovery of tungsten, Hydrometallurgy, 178, pp.137-145.
10.1016/j.hydromet.2018.04.011
13
Choi, I., 2018 : Study on the recovery of vanadium and tungsten from spent V2O5-WO3/TiO2 Catalyst, University of Science and Technology (UST), Resources Recycling PhD dissertation thesis.
10.1007/978-3-319-95022-8_20730367475
14
Kim, H.I., Moon, G., Choi, I., et al., 2018 : Hydrometallurgical process development for the extraction, separation and recovery of vanadium from spent desulfurization catalyst bio-leach liquors, Journal of Cleaner Production, 187, pp.449-458.
10.1016/j.jclepro.2018.03.247
15
Wei, W., Reddy, D.H.K., Bediako, J.K., et al., 2016 : Aliquat- 336-impregnated alginate capsule as a green sorbent for selective recovery of gold from metal mixtures, Chemical Engineering Journal, 289, pp.413-422.
10.1016/j.cej.2015.12.104
16
Wei, W., Cho, C.W., Kim, S., et al., 2016 : Selective recovery of Au(III), Pt(IV), and Pd(II) from aqueous solutions by liquid-liquid extraction using ionic liquid Aliquat-336, Journal of Molecular Liquids, 216, pp.18-24.
10.1016/j.molliq.2016.01.016
17
El-Nadi, Y.A., Awwad, N.S. and Nayl, A.A., 2009 : A comparative study of vanadium extraction by Aliquat-336 from acidic and alkaline media with application to spent catalyst, International Journal of Mineral Processing, 92, pp.115-120.
10.1016/j.minpro.2009.03.005
18
Nguyen, T.H. and Lee, M.S., 2016 : A review on the separation of molybdenum, tungsten, and vanadium from leach liquors of diverse resources by solvent extraction, Geosystem Engineering, 19(5), pp.247-259.
10.1080/12269328.2016.1186577
19
Nakamura, T., Nishihama, S. and Yoshizuka, K., 2009 : A novel extractant based on d-glucosamine for the extraction of molybdenum and tungsten, Solvent Extraction Research and Development, 16, pp.47-56.
Information
  • Publisher :The Korean Institute of Resources Recycling
  • Publisher(Ko) :한국자원리싸이클링학회
  • Journal Title :Journal of the Korean Institute of Resources Recycling
  • Journal Title(Ko) :자원리싸이클링
  • Volume : 29
  • No :2
  • Pages :55-61
  • Received Date : 2019-11-12
  • Revised Date : 2020-02-06
  • Accepted Date : 2020-02-17
  • DOI :https://doi.org/10.7844/kirr.2020.29.2.55
Journal Informaiton Resources Recycling Resources Recycling
E-Book
Online Submission
Archives
: Archives
  • NRF
  • KOFST
  • crossref crossmark
  • crossref cited-by
  • KCI 문헌 유사도 검사
  • orcid
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close