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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Institute of Resources Recycling
Journal Basic Information
Journal DOI :
The Korean Institute of Resources Recycling
Editor in Chief :
Volume & Issues
Volume 22, Issue 6 - Dec 2013
Volume 22, Issue 5 - Oct 2013
Volume 22, Issue 4 - Aug 2013
Volume 22, Issue 3 - Jun 2013
Volume 22, Issue 2 - Apr 2013
Volume 22, Issue 1 - Feb 2013
Selecting the target year
Strategy of Critical Materials Management in the World
Kim, Yu Jeong ;
Journal of the Korean Institute of Resources Recycling, volume 22, issue 5, 2013, Pages 3~12
DOI : 10.7844/kirr.2013.22.5.3
It is necessary to manage risk of metals which are has rigid supply structures and expected demand expansion, considering to industry structure and resource securing capacity of each country. Countries conducted various criticality analyses and selected mainly rare metals as critical materials(or Critical metals or Critical raw materials). This study examined cases of metals risk evaluation and management which are based on technology changes and imbalance supply-demand. EU and U.S.A evaluated risk on metals needed as supply expansion of renewable energy. Japan forecasted demand of rare metals needed in Japan`s growth engine industry. U.K analyzed criticality of metals, considering environmental burden occurred from mining to refining. Critical materials has features such as weak price signal, inelastic supply structure, demand volatility in technology change.
The Effect of pH on Citric Acid Leaching of Soil Contaminated with Heavy Metals
Jung, Kyungbae ; Park, Hongki ; Yoo, Kyoungkeun ; Park, Jay Hyun ; Choi, Ui Kyu ;
Journal of the Korean Institute of Resources Recycling, volume 22, issue 5, 2013, Pages 13~19
DOI : 10.7844/kirr.2013.22.5.13
The effect of pH on the citrate leaching behavior of heavy metal ion was investigated to develop an eco-friendly process for removing heavy metals from soil contaminated with copper, zinc, and lead. The leaching tests were performed using citrate solution with pH adjusted by mixing citric acid and sodium citrate under the following leaching conditions: particle size, under
; citrate concentration,
; pulp density, 5%; shaking speed, 100 rpm; leaching time, 1 hour. The difference of pH before and after the leaching test was not observed, and this result indicates the direct effect of hydrogen ion concentration on the leaching of metals was insignificant. The removal ratios of copper, zinc, and lead from the contaminated soil decreased with increasing pH. The thermodynamic calculation suggests that the leaching behaviors of metal ions were determined by two reactions; one is the reaction to form complex ions between heavy metal ions and citrate ion species, and the other is the reaction to form metal hydroxide between heavy metal ions and hydroxide ion.
Evaluation of Resource Recovery from Sorted Waste by MBT System
Lee, Byung-Sun ; Han, Sang-Kuk ; Lee, Nam-Hoon ; Kang, Jeong-Hee ; Wie, June ;
Journal of the Korean Institute of Resources Recycling, volume 22, issue 5, 2013, Pages 20~28
DOI : 10.7844/kirr.2013.22.5.20
This study was carried out to evaluate the possibility of resource recovery for municipal solid waste(MSW) that sorted by a MBT system. First, physical property of MSW was similar to wastes carried into Sudokown landfill site. However, moisture of MSW was little higher than that. As a result of BMP test using organic fraction of MSW(OFMSWs), approximately 60 ~ 80 mL
-VS of methane was occurred. Compared to the other studies, the value of methane is lower. It seems to be caused that high ratio of vinyl/plastic in OFMSWs. The other BMP test using sample of MBT system located in Sudokwon landfill was conducted each physical properties. According to the result of experiment, food waste makes 193 mL
-VS, and paper is 102 mL
-VS. However, there was not methane production in vinyl and rubber. Additionally, others that can`t sort no more show 30 m
-VS of methane production. From the result of experimental data OFMSWs has high fraction of vinyl, rubber and other substance that difficult for biodegradation. Therefore it is need to sort of them.
Separation of Platinum(IV) and Rhodium(III) from Acidic Chloride Solution by Solvent Extraction with Tri 2-Ethylhexyl Amine(TEHA)
Sun, Pan-Pan ; Lee, Man-Seung ;
Journal of the Korean Institute of Resources Recycling, volume 22, issue 5, 2013, Pages 29~34
DOI : 10.7844/kirr.2013.22.5.29
Solvent extraction experiments were performed to separate platinum and rhodium from mixed chloride solution by using tri 2-ethylhexyl amine (TEHA) and its mixture with TBP and LIX 63. Effects of extraction conditions on the separation of the two metals were investigated as a function of extractant concentration in the HCl concentration range from 1 to 9 M. The concentration of Pt (IV) and Rh(III) was controlled to
, respectively. In the extraction with TEHA and its mixture, Pt was quantitatively extracted irrespective of HCl concentration, while the extraction percentage of Rh depended on the extraction condition. When the concentration of HCl in the mixed solution was low, the extraction of Rh was nil and separation of Pt and Rh was possible. Adding TBP to TEHA had little effect on the extraction of both metals, while adding LIX63 to TEHA favored the extraction of Rh.
Solvent Extraction Separation of Nd and Pr from Chloride Solution using PC88A and D2EHPA
Park, Joo-Ho ; Jeon, Ho-Seok ; Lee, Man-Seung ;
Journal of the Korean Institute of Resources Recycling, volume 22, issue 5, 2013, Pages 35~42
DOI : 10.7844/kirr.2013.22.5.35
Solvent extraction experiments have been performed to investigate an optimum condition to separate Nd and Pr from chloride solutions using PC88A and D2EHPA. In our experimental ranges, the distribution coefficients of Nd were higher than those of Pr. In both of PC88A and D2EHPA extractant system, our results indicated that the increase in concentration ratio of extractant to metal had a great effect on the extraction and separation of the two metals. In extraction with saponified D2EHPA, the initial pH of the aqueous solution and saponification degree had some effect on the extraction of the two metals but little effect on the separation factor.
Study on the Removal As from the Tailing of Sangdong Mine using Froth Flotation
Kim, Min Sik ; Lee, Sang Ho ; Park, Mi Jeong ; Choe, Hong Il ; Yang, In Jae ; Kang, Heon Chan ;
Journal of the Korean Institute of Resources Recycling, volume 22, issue 5, 2013, Pages 43~49
DOI : 10.7844/kirr.2013.22.5.43
Froth flotation was performed to remove As from the tailing of Sangdong Mine. When the tailings of Sangdong Mine were analyzed by the Standard Method for the Soil Environment Conservation, the concentration of As was found to be at a serious level (282 mg/kg), exceeding countermeasure standard (75 mg/kg). Froth flotation was performed to remove As and preliminary tests were performed to select the reagents. Specifically, froth flotation was performed using collector and frother, KAX and DF250 respectively. An experiment based on pH changes found that the removal rate was highest at pH6. The removal rate of As was highest at agitating rate 1500 according to the agitating rate. In the experiment based on the quantities of KAX added, the removal rate of As was found to be highest at 300 g/ton and was reduced at higher levels than 300 g/ton. An experiment based on pulp density found that the removal rate was highest at pulp density 30%. It was possible to adjust the As level -- which exceeded countermeasure standard (75 mg/kg) -- to 22.5mg/kg to satisfy the Warning standard (25 mg/kg), from the results of froth flotation.
Recovery of Copper from Spent Photovoltaic Ribbon in Solar Module
Lee, Jin-Seok ; Jang, Bo-Yun ; Kim, Joon-Soo ; Ahn, Young-Soo ; Kang, Gi-Hwan ; Wang, Jei-Pil ;
Journal of the Korean Institute of Resources Recycling, volume 22, issue 5, 2013, Pages 50~55
DOI : 10.7844/kirr.2013.22.5.50
The recovery of copper from spent photovoltaic ribbon was conducted using thermal treatment method at the range of temperature of
under inert atmosphere. The coating layer consisted of lead of 68.99 wt.% and tin of 31.21 wt.% was melted down at elevated temperatures and was collected on the bottom of crucible. The chemical composition of copper ribbon after thermal treatment was analyzed by ICP-MS (Inductively coupled plasma mass spectrometry) and the purity of copper was found to be obtained up to about 96 wt.% regardless of temperatures. The cross-sectional area of the specimen was also examined by SEM (scanning electron microscopy) and EDX (energy dispersive X-ray microscopy).
Analysis of Biomass Energy Potential and Density in Korea
Kook, Jin Woo ; Shin, Ji Hoon ; Yoo, Ho Seong ; Lee, See-Hoon ;
Journal of the Korean Institute of Resources Recycling, volume 22, issue 5, 2013, Pages 56~62
DOI : 10.7844/kirr.2013.22.5.56
The biomass resources is one of promising ways to solve energy exhaustion issues and global warming issues at the same time. To evaluate domestic biomass resources potential such as agricultural wastes, forestry wastes, livestock wastes and municipal solid wastes, statistics data from various organizations were collected and analyzed in this study. Also, space energy densities of each districts in Korea were calculated and analyzed. The results from the evaluation of biomass energy potential and space energy densities in Korea might be useful to estimate the availability of biomass energy conversion processes and to choice a appropriate process to convert domestic biomass into energy.
Trend on the Recycling Technologies for Spent Electric Wire by the Patent and Paper Analysis
Ku, Jae-Kwan ; Kim, Sang-Su ; Lee, Yong-Ho ; Kim, Byung-Geol ; Cho, Young-Ju ; Cho, Bong-Gyoo ;
Journal of the Korean Institute of Resources Recycling, volume 22, issue 5, 2013, Pages 63~70
DOI : 10.7844/kirr.2013.22.5.63
There are generated the hundreds of tons of waste electric wire per year due to replace for increase transmission capacity and/or replacement of old electric wire by Korea`s national power grid and/or private industrial factories. Recently, the wire recycling technologies studied extensively in terms of effieiency by of economic aspects and environment aspects. In this paper, the patents and papers for the recycling technologies of spent electric wire were collected and analyzed. The range of search was limited in the open patents of USA (US), European Union (EP), Japan (JP), Korea (KR) and SCI journals from 1975 to 2011. Patents and journals were collected using key-words searching and filtered by filtering criteria. The trends of the patents and journals were analyzed by the years, countries, companies, and technologies.