Journal of the Korean Institute of Resources Recycling最新文献

{"title":"Separation Behavior of Vanadium and Tungsten from the Spent SCR DeNOX Catalyst by Strong Basic Anion Exchange Resin","authors":"Seongwoo Heo, J. Jeon, Chul-Joo Kim, K. Chung, Hoseok Jeon, D. Yoon, Ho-Sung Yoon","doi":"10.7844/KIRR.2020.29.5.38","DOIUrl":"https://doi.org/10.7844/KIRR.2020.29.5.38","url":null,"abstract":"In this study, factors affecting the adsorption reaction for the separation/recovery of V and W using Lewatit monoplus MP 600, a strong basic anion exchange resin, from the leachate obtained through the soda roasting-water leaching process from the spent SCR DeNOX catalyst investigated and the adsorption mechanism was discussed based on the results. In the case of the mixed solution of V and W, both ions showed a high adsorption ratio at pH 2-6, but the adsorption of W was greatly reduced at pH 8. In the adsorption isothermal experiment, both V and W were fitted well at the Langmuir adsorption isotherm, and the reaction kinetics were fitted well at pseudo-second-order. As a result of conducting an adsorption experiment by adjusting the pH with H2SO4 to remove Si, which inhibits the adsorption of V and W from the leachate, the lowest W adsorption ratio was SCR 탈질 폐촉매로부터 강염기성 음이온교환수지를 이용한 바나듐/텅스텐 분리거동 고찰 39 자원리싸이클링 제 29권 제 5호, 2020 1. 서 론 전 세계적으로 질소산화물(NOx) 배출에 대한 환경규 제가 강화됨에 따라 질소산화물을 저감하기 위한 기술 중 선택적촉매환원법(Selective Catalytic Reduction : SCR) 에 대한 수요가 증가하고 있다. 선택적촉매환원법은 암모 니아(NH3)를 환원제로 이용하여 촉매 상에서 질소산화물 을 N2와 H2O로 분해하여 질소산화물을 제거하는 방법으 로 80~90%의 높은 탈질 효율을 나타내고 운전과 유지보 수가 용이하다는 장점을 갖는다. SCR 탈질촉매는 일반 적으로 TiO2나 Al2O3를 지지체로 사용하며 V2O5, WO3, Fe2O3, CoO, NiO, MnO2, Cr2O3, CuO 등을 활성성분으 로 사용한다. 다양한 종류의 SCR 탈질촉매 중 V2O5WO3/TiO2 촉매는 높은 NOx 전환율을 갖고 SO2의 산화 를 제한하며 운전온도범위도 넓은 장점을 지녀 상용화 촉 매로서 널리 이용되고 있다. SCR 탈질촉매는 2~5년의 작동 수명을 가지는데 고온에서 장시간 운전 시 비표면적 의 감소, 촉매 활성점의 오염, 인 성분 축적 등으로 인해 촉매 성능이 저하되며 비활성화가 일어난다. 비활성화된 촉매는 화학적 처리나 열처리를 통해 재생하여 사용하지 만, 촉매를 반복하여 재생하게 되면 재생 처리에도 불구 하고 결국 촉매의 기능을 하지 못하는 시점에 도달한다. 이처럼 수명이 끝난 촉매는 매립되어 폐기되는데, 폐촉매 에 함유된 바나듐(V)과 텅스텐(W)으로 인해 심각한 토양 오염이 발생하고 희유금속 자원이 버려지는 문제가 발생 한다. 따라서, 촉매와 함께 폐기되는 V, W 등의 희유금속 자원을 회수하여 재활용하는 것은 폐촉매의 폐기로 인해 발생하는 환경적 문제와 희유금속자원 공급의 불안정성 문제를 위한 해결책이 될 것이다. SCR 탈질폐촉매로부터 V과 W를 추출하기 위한 습식 제련법(hydrometallurgy)은 소다 배소법(soda roasting)수침출(water leaching) 공정을 통해 진행되는데, NaOH, Na2CO3, NaCl을 사용하여 V과 W를 수용성인 NaVO3, Na2WO4의 형태로 전환시켜 티타늄과 분리하여 V과 W 만을 선택적으로 추출할 수 있다. 습식제련법으로 얻어진 침출액은 침전법, 용매추출법, 이온교환법을 사용하여 용 액 내 희유금속을 분리할 수 있는데, 침전법은 공정 중 발 생하는 불순물의 분리가 어렵기 때문에 제품의 순도가 낮 아지는 문제점이 있으며, 용매추출법에 의한 분리, 회수 는 pH와 같은 조건에 따라 추출제 선택에 제한이 있고 부 유물과 침전물을 쉽게 형성하여 용액에 함유된 다른 금속 원소들과의 분리가 어려워지는 문제점이 있다. 반면에 이온교환수지를 사용하여 금속이온을 분리하는 경우에는 용액 내 금속 이온의 극성에 따라 이온교환 수지의 선택이 용이하고 금속 이온의 특성에 따른 분리가 가능하므로 용 액 내 미량의 금속 이온의 선택적 분리가 가능하며 비슷한 화학적 특성을 가져 분리가 어려운 금속원소의 분리도 가 능하다. Wu 등은 강염기성 이온교환 수지 Amberlite IRA900 을 통해 강염기 조건에서 SCR 탈질 폐촉매로부터 텅스텐 을 98% 순도로 회수하였다고 보고하였고 Jeon 등은 SCR 탈질 폐촉매로부터 상용 음이온 교환수지 MP600으로 바 나듐을 분리하는 연구를 수행하였다. Hu 등은 강염기 성 이온교환 수지 D296을 통해 pH 7.2에서 바나듐을 선 택적으로 흡착하여 몰리브덴과 분리하는 연구를 수행하 였고 Yeh 등은 SCR 탈질 폐촉매로부터 연속식 이온교환 반응기를 통해 PH 8에서 바나듐과 비소를 분리하였다고 보고하였다. 이온교환수지를 사용해 SCR 탈질 폐촉매로부터 텅스 텐과 바나듐을 회수하는 연구와 특정 pH 조건에서 이온 교환법을 통해 금속을 분리하는 연구는 다양하게 선행되 어 왔지만, SCR 촉매로부터 특정 pH 조건에서 바나듐을 선택적으로 회수함으로써 텅스텐과 분리하는 연구는 보 고되지 않고 있다. 그러므로 본 연구에서는 SCR 탈질폐 촉매 소다배소-수침출 공정을 통해 얻은 침출액으로부터 바나듐과 텅스텐의 분리/회수를 위한 흡착 반응에 영향을 미치는 인자들을 고찰하고, 이를 통하여 흡 ∙탈착 메커니 즘을 규명하고자 하였","PeriodicalId":17385,"journal":{"name":"Journal of the Korean Institute of Resources Recycling","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89667017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Titanium Dioxide Recovery from Soda-roasted Spent SCR Catalysts through Sulphuric Acid Leaching and Hydrolysis Precipitation","authors":"Seunghyun Kim, H. Trinh, Jaeryeong Lee","doi":"10.7844/KIRR.2020.29.5.48","DOIUrl":"https://doi.org/10.7844/KIRR.2020.29.5.48","url":null,"abstract":"Sulphuric acid (H2SO4) leaching and hydrolysis were experimented for the recovery of titanum dioxide (TiO2) from the water-leached residue followed by soda-roasting spent SCR catalysts. Sulphuric acid leaching of Ti was carried out with leachate concentration (4~8 M) and the others were fixed (temp.: 70 °C, leaching time: 3 hrs, slurry density: 100 g/L, stirring speed: 500 rpm). For recovering of Ti from the leaching solution, hydrolysis precipitation was conducted at 100 °C for 2 hours in various mixing ratio (leached solution:distilled water) of 1:9 to 5:5. The maximum leachability was reached to 95.2 % in 6 M H2SO4 leachate. on the other hand, the leachability of Si decreased dramatically 91.7 to 3.0 % with an increase of H2SO4 concentration. Hydrolysis precipitation of Ti was proceeded with leaching solution of 8 M H2SO4 with the lowest content of Si. The yield of precipitation increased proportionally with a dilution ratio of leaching solution. Moreover, it increased generally by · Received : August 25, 2020 · Revised : September 24, 2020 · Accepted : September 29, 2020 § Corresponding Author : Jaeryeong Lee (E-mail : jr-lee@kangwon.ac.kr) Department of Energy & Resources Engineering, Kangwon National University, 1 Gangwondaehak-gil, Chuncheon-si, Gangwon-do 24341, Korea cThe Korean Institute of Resources Recycling. All rights reserved. This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution and reproduction in any medium, provided the original work is properly cited. 소다배소 처리된 탈질 폐촉매로부터 황산침출과 가수분해 침전반응에 의한 TiO2의 회수 49 자원리싸이클링 제 29권 제 5호, 2020 1. 서 론 SCR(Selective Catalytic Reduction) 성능의 탈질촉매 는 화력발전소, 소각장 등에서 발생하는 배출가스 중 대 기오염물질인 NOX를 환원제인 암모니아, 요소와 반응시 켜 인체와 환경에 무해한 N2, H2O로 변환시키는데 사용 되는 촉매로써, 조성이 TiO2 70~80 %, WO3 5~12 %, V2O5 1~5 %인 V2O5-WO3/TiO2 type 촉매가 주로 사용되 고 있다. 이러한 탈질촉매는 현장에 설치된 후, 사용시간 이 경과함에 따라 효율이 점차 감소되기 때문에 일반적으 로 20,000 시간을 주기로 재생하거나 새로운 촉매로 교체 하여야 한다. 교체된 사용 후 폐촉매는 조성에 따라 일반 또는 지정폐기물로 분류되어 매립처리 되고 있으며 2014 년 기준 연간 11,000 톤의 폐촉매가 발생되었고, 이 중 9,600 톤이 매립되고, 1,400 톤만이 재활용되었다. 탈질 폐촉매의 재활용에 관한 연구는 탈질 촉매 원료가 격 중 50 % 이상을 차지하는 텅스텐, 바나듐의 회수에 관 한 연구가 주로 진행되었다. 대표적인 재활용연구로는 탈질 폐촉매를 황산으로 침출 후, 침출액으로부터 용매 추출법을 이용한 바나듐을 회수하는 연구, 탈질 폐촉매 를 탄산나트륨(Na2CO3)을 이용하여 배소처리 후, 수침 출에 의한 텅스텐과 바나듐을 회수하는 연구, 탈질 폐촉 매를 수산화나트륨(NaOH)과 혼합 후, 가압침출하여 텅 스텐(Tungsten, W)과 바나듐(Vanadium, V)을 회수하는 연구 등이 실행되었다. 이렇듯 탈질촉매의 재활용 연구는 대부분 W과 V 회수연구에 집중되어 진행되었다. 탈질촉매의 70 % 이상을 차지하는 TiO2는 대표적 백 색 안료로써 백색도, 굴절율, 은폐력, 착색력이 우수하며, 열적, 화학적으로도 안정하여 플라스틱, 도료, 고무, 제지 산업에서 특성향상 첨가제로 널리 이용되고 있다. 또한, 탈질 폐촉매에서 텅스텐, 바나듐 회수를 위해서도 처리 후 발생되는 대량의 잔사(residue)에 대해 환경적으로 적 절한 TiO2의 회수공정 개발이 요구되고 있는 실정이다. 따라서 본 연구에서는 탈질 폐촉매로부터 W, V 회수 를 위해 소다배소(Na2CO3) 후 수침출을 실시한 잔사로부 터, TiO2를 회수하기 위해 황산을 이용한 산침출과 침출 액의 가수분해 침전반응을 실시하여 TiO2 성분의 회수율 과 회수된 TiO2에 대한 순도 및 형상을 평가하였다.","PeriodicalId":17385,"journal":{"name":"Journal of the Korean Institute of Resources Recycling","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81323196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improvement Plan for Calculation of Financial Contributions to Treatment of Waste Electrical and Electronic Equipments","authors":"Hansu Kim, Dae-Bong Kim","doi":"10.7844/KIRR.2020.29.4.45","DOIUrl":"https://doi.org/10.7844/KIRR.2020.29.4.45","url":null,"abstract":"","PeriodicalId":17385,"journal":{"name":"Journal of the Korean Institute of Resources Recycling","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81245094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Production Technology of Titanium by Kroll Process","authors":"H. Sohn","doi":"10.7844/KIRR.2020.29.4.3","DOIUrl":"https://doi.org/10.7844/KIRR.2020.29.4.3","url":null,"abstract":"Titanium sponge is industrially produced by the Kroll process. In order to understand the importance of the emerging smelting and recycling process, it is necessary to review the conventional production process of titanium. Therefore this paper provides a general overview of the conventional titanium manufacturing system mainly by the Kroll process. The Kroll process can be divided into four sub-processes as follows: (1) Chlorination of raw TiO2 with coke, by the fluidized bed chlorination or molten salt chlorination (2) Magnesium reduction of TiCl4 and vacuum distillation of MgCl2 and Mg by reverse U-type or I-type with reductiondistillation integrated retorts (3) Electrolysis process of MgCl2 by monopolar cells or multipolar cells to electrolyze into chlorine gas and Mg. (4) Crushing and melting process in which sponge titanium is crushed and then melted in a vacuum arc furnace or an electron beam furnace Although the apparatus and procedures have improved over the past 80 years, the Kroll process is the costly and time-consuming batch operation for the reduction of TiCl4 and the separation of MgCl2.","PeriodicalId":17385,"journal":{"name":"Journal of the Korean Institute of Resources Recycling","volume":"98 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89898151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Status and Future Prospects for Plastics Recycling","authors":"Young-Ju Cho, Bong-Gyoo Cho","doi":"10.7844/KIRR.2020.29.4.31","DOIUrl":"https://doi.org/10.7844/KIRR.2020.29.4.31","url":null,"abstract":"Recently, plastic recycling has emerged as a social issue, and its importance is increasing. Therefore, this article reviewed the current status and the future directions of domestic plastic recycling. Plastic recycling is major economic and social problems not only in South Korea but also worldwide and is being treated as an important factor for protecting the environment and for sustainability in the next generation. In particular, China, which has been dealing with a large amount of plastic waste generated around the world, has banned importing plastic waste, therefore, other countries have faced the problem of recycling plastics in their countries. In South Korea, the landfill and incineration of the waste are becoming more difficult by the Framework Act on Resources Circulation, therefore, the recycling and reuse of plastics are a very important.","PeriodicalId":17385,"journal":{"name":"Journal of the Korean Institute of Resources Recycling","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91382780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aggregation of Thin Copper Wire by Ball Milling Treatment","authors":"Jisu Hwang, S. S. Cho, Chang Jun Seong, Kyoungkeun Yoo","doi":"10.7844/KIRR.2020.29.4.67","DOIUrl":"https://doi.org/10.7844/KIRR.2020.29.4.67","url":null,"abstract":"Recycling processes of spent copper wires cosisnt of several steps of cutting and chopping processes for peeling covering materials followed by gravity separation processes, where copper is recovered. Because copper thin wires could be lost during further recycling processes, the wire may need to be further treated. In the present study, the copper thin wire was treated with ball milling to prevent the loss. Since the aggregation of the copper wire could be formed by bending and entangling the copper wire each other, the degree of flexion of the copper wire was measured after ball milling. When the 0.5 cm and 3 cm copper wires were used, the 0.5 cm copper wire was not bent and the 3 cm copper wires were aggregated regardless of the ball addition. When the 1 cm and 2 cm copper wires were used, the degree of flexion was remarkable when the balls were added. In the tests using 2 cm copper wires, the aggregation ratio of the copper wire gradually increased with the amount of the 20 mm alumina ball, and when 200 ml of 30 mm alumina ball was used, the aggregation ratio increased to 89.29 %, but after increasing the ball amount further, the aggregation ratio decreased. Thus, it is expected that the loss of the copper wire could be reducedif when the copper thin wire is treated with ball milling by the aggregation of copper thin wires.","PeriodicalId":17385,"journal":{"name":"Journal of the Korean Institute of Resources Recycling","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90798142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of Na Compounds from Sodium Concentrated Solution Using Carbonation and Cryo-crystallization","authors":"Seungwoo Lee, S. Chae, J. Bang","doi":"10.7844/KIRR.2020.29.4.58","DOIUrl":"https://doi.org/10.7844/KIRR.2020.29.4.58","url":null,"abstract":"Carbonation (step I) and cryo-crystallization (crystallization at low temperature) (step II) were performed to synthesize Na compounds from sodium concentrated solution. In the step 1, the solubility and pH of carbon dioxide (95 wt.%) affecting carbonation could be changed by the variation of reaction temperature. The step II was performed at 2 °C after carbonation. The injection of carbon dioxide was carried out twice for the stable production and the saturated solubility of carbonate ions in solution. Firstly, we tried to inject CO2 for controlling the solubility of CO2 by changing the reaction temperature from 35 °C to 10 °C, and the second injection was aimed at 10 °C for inducing nucleation of Na compound through carbonation after NaCl solution addition. In the cryo-crystallization step, the crystal growth of Na compounds could be induced by slowing the carbonation rate through reaction temperature change from 10 °C to 2 °C. In this study, the effect on NaOH concentration was examined and the purity of Na compound was increased when 2M NaOH was used. In addition, the synthesized Na compounds were mostly rod-shaped and consisted of sodium carbonate or sodium carbonate with monohydrate.","PeriodicalId":17385,"journal":{"name":"Journal of the Korean Institute of Resources Recycling","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83645704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selective Extraction of Cobalt and Nickel in the Presence of Magnesium from Sulphate Solutions by Versatic Acid 10","authors":"Yeon-Chul Cho, Jae-Woo Ahn, Jae young Lee","doi":"10.7844/KIRR.2020.29.4.51","DOIUrl":"https://doi.org/10.7844/KIRR.2020.29.4.51","url":null,"abstract":"Separation of Co and Ni over Mg from the sulfuric acid solutions using Cyanex272, PC88A and Versatic acid 10 as an extractant was carried out. From the comparative studies about the extraction behavior of Co, Ni and Mg, Versatic acid 10 was superior to Cyanex272 and PC88A for the selective extraction of cobalt and nickel from the mixed solutions. About 98% of Ni and Co were extracted at equilibrium pH 7.0 and less than 5% of Mg was co-extracted by Versatic acid 10. McCabe-Thiele diagram indicated two stages requirement for Co and Ni extraction by 10% Versatic acid 10 at pH 7.0 and phase ratio (A/O) of 2.0. The loaded Co and Ni in organic phase was stripped effectively the sulfuric acid concentration above 70 g/L. 99.78% of cobalt and 98.42% of nickel were stripped.","PeriodicalId":17385,"journal":{"name":"Journal of the Korean Institute of Resources Recycling","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74637969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Current Status and Utilization Technology of End-of-Life Photovoltaic Modules","authors":"Jaiyoung Cho, Areum Park, H. Yun, Yun-Su Jun, Joon-Soo Kim","doi":"10.7844/KIRR.2020.29.4.15","DOIUrl":"https://doi.org/10.7844/KIRR.2020.29.4.15","url":null,"abstract":"Recently, it is increasing a amount of installed solar-cell rapidly, and end-of-life photovoltaic(ELP) modules are generated in according to the reduction of cell efficiency largely. Recycling of ELP modules are begun at an advanced nation already, but there are bring about environmental contamination and resource recovery problems owing to not treated ELP modules because of economic cost completely. First of all, there were researched basic study for treatment conditions of used solar cell inspection, dismantling of aluminum frame, crushing / grinding & separation of tempered glass, removal of back sheet & EVA film, leaching & precipitation recovery of valuable metals and treatment of waste water. Therefore, we establish optimum conditions through carried out of designed apparatus, installation of equipment, test operation & trouble shooting in scale of 1ton/day pilot plant test. Following to economic review, it does have the economic efficiency until to the case of tempered glass recovery, but does not have the economic value in case of total processes until to recover the valuable metals. However, there are guaranteed economic value if we are gained a large amount of the expenses through EPR supported system. It was confirmed the commercialized possibility of ELP modules recycling if there were established on the collecting ELP modules, reusing criteria, economical technology, enactment of directives and enforcement of EPR supported system efficiently.","PeriodicalId":17385,"journal":{"name":"Journal of the Korean Institute of Resources Recycling","volume":"112 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86288563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of Global Trends on Resource Productivity and Its Promotion Strategy","authors":"Hong-Yoon Kang","doi":"10.7844/KIRR.2020.29.3.24","DOIUrl":"https://doi.org/10.7844/KIRR.2020.29.3.24","url":null,"abstract":"Management of resource productivity is important for the reduction of natural resources and energy consumption. This is closely linked to circular economy which has recently been stressed worldwidely. Resource productivity is a key indicator which is to be managed in various industry sectors. Especially Korea which is heavily dependent on the natural resources import from overseas needs to give attention to this point. Nevertheless resource productivity related domestic researches and policies are extremely rare. This paper thus presents trends on resources productivities and their management policies of European countries and OECD G7 countries compared to the situation of Korea. In addition, the decoupling phenomenon of DMC (domestic material consumption) and GDP of Europe is analyzed and the resource productivity promotion strategy of Korea is proposed.","PeriodicalId":17385,"journal":{"name":"Journal of the Korean Institute of Resources Recycling","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84924775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}