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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 21, Issue 6 - Dec 2012
Volume 21, Issue 5 - Oct 2012
Volume 21, Issue 4 - Aug 2012
Volume 21, Issue 3 - Jun 2012
Volume 21, Issue 2 - Apr 2012
Volume 21, Issue 1 - Feb 2012
Selecting the target year
Current Status of Pyrometallurgical Process for the Reclamation of Urban Ore
Kim, Byung-Su ; Lee, Jae-Chun ; Shin, Do-Yeoun ; Jeoung, Jin-Ki ; Rhee, Kang-In ; Sohn, Jeong-Soo ; Yang, Dong-Hyo ; Kim, Min-Seuk ; Kim, Soo-Kyung ;
Journal of the Korean Institute of Resources Recycling, volume 21, issue 2, 2012, Pages 3~8
DOI : 10.7844/kirr.2012.21.2.003
In the points of the environmental conservation and the recirculating utilization of limited resources, it is very important to recover valuable metals like Au, Ag, Pd, Cu, Sn, Ni, Co, and Li used as industrial raw materials from urban ores. From now, many processes have been developed for recovering the valuable metals contained in urban ores and some of them have been operated commercially. In the paper, pyrometallurgical processes developed for reclaiming valuable metals from urban ores will be briefly introduced.
Utilization of Agricultural Residues as Low Cost Adsorbents for the Removal Dyes from Aqueous Solution
Shin, Hee-Duck ;
Journal of the Korean Institute of Resources Recycling, volume 21, issue 2, 2012, Pages 9~16
DOI : 10.7844/kirr.2012.21.2.009
This review evaluates a number of different agricultural waste adsorbents and types of dyes. Certain wastewater containing different dye contaminants causes serious environmental problems. Recently, growing research interest in the production of carbon based has been focused on agricultural by-products. Low cost adsorbents derived from agricultural wastes have demonstrated outstanding capabilities for the removal of dyes from waste water. The use of cheap and eco-friendly adsorbents have been studied as an alternative substitution of activated carbon for the removal dyes from wastewater.
Technological Progress and Issues on the Recycling of Urban Mine Resources - Comparison of Korea with Japan -
Oh, Jae-Hyun ; Kim, Joon-Soo ; Moon, Suk-Min ; Min, Ji-Won ;
Journal of the Korean Institute of Resources Recycling, volume 21, issue 2, 2012, Pages 17~33
DOI : 10.7844/kirr.2012.21.2.017
In order to review the recent technological progress and issues on the urban mine resources recycling in Japan and Korea, recycling process of the ELV(End of Life Vehicles) and E-waste(WEEE) were studied. Although technological level for processing of the ELV and E-waste is almost similar in both countries, the treatment of hazadous materials of ELV such as freon, air bag and ASR is unsufficient in Korea. In the E-waste recycling, the technological level is deeply different according to the enterprise size in Korea. Finally, the big R&D project on recycling of urban mine resources sponsored by government in both countries were discussed.
Effects of PtMn composition on carbon supported PtMn catalysts for PEMFC
Yoo, Sung-Yeol ; Kang, Suk-Min ; Lee, Jin-A ; Rhee, Choong-Kyun ; Ryu, Ho-Jin ;
Journal of the Korean Institute of Resources Recycling, volume 21, issue 2, 2012, Pages 34~40
DOI : 10.7844/kirr.2012.21.2.034
/C electrocatalysts for Polymer Electrolyte Membrane Fuel Cells(PEMFCs) were synthesized by reduction with HCHO and their activity as a oxygen reduction reaction(ORR) was examined at half cell. The electrochemical oxygen reduction reaction(ORR) was studied by using a glaasy carbon electrode through cyclic voltammetric curves(CV) in a 1 M
solution. The ORR activities of
/C were higher than
/C. Also potential-current curves of
/C at 0.9, 0.8, 0.7, 0.6V for 5minutes respectively were higher than
/C. Physical characterization was made by using x-ray diffraction(XRD) and transmission electron microscope(TEM). The TEM images of
/C catalysts showed homogenous particle distribution with particle size of about 2.7 nm, 3 nm respectively and then the XRD results showed that the crystalline structure of the synthesized catalysts are seen FCC structure.
Recovery of Nickel from Electroless Plating Wastewater by Electrolysis Method
Lee, Hwa-Young ;
Journal of the Korean Institute of Resources Recycling, volume 21, issue 2, 2012, Pages 41~46
DOI : 10.7844/kirr.2012.21.2.041
An investigation on the recovery of nickel from spent electroless plating solutions has been performed using the electrowinning method. For this aim, nickel in spent electroless plating solutions was separated as nickel hydroxide through the addition of caustic soda. Nickel hydroxide was completely dissolved with sulfuric acid and an electrolysis was performed for electrowinning of nickel from nickel solutions. As a result, it was found that more than 99% of nickel in spent electroless plating solutions could be precipitated as nickel hydroxide above pH 10 with the addition of caustic soda. As far as the current efficiency in electrowinning of nickel was concerned, it was decreased with increase in the current density.
Mechanical Properties of Concrete Using Metakaolin and Silicon Dioxide
Kim, Nam-Wook ; Kim, Chun-Ho ;
Journal of the Korean Institute of Resources Recycling, volume 21, issue 2, 2012, Pages 47~52
DOI : 10.7844/kirr.2012.21.2.047
According to the diversification of types of concrete structures, the quality of the concrete which is demanded also, is becoming high performance essentially. The high performance of the concrete leads using of admixtures, generally, in order to produce high strength, concrete has been used to silica fume. Silica fume is excellent mechanical properties, but unlikely to be economic. So, recently as a replacement for silica fume, metakaolin is a lot of research underway. In this study, it is used the metakaolin substitute for silica fume. For in order to prevent loss of liquidity when occurs using the admixtures, we used the silica dioxide. Therefore, concrete with the admixtures and silicon dioxide were examined the mechanical properties.
Recovery of High Purity KI Crystal from Aqueous Waste of Polarizing Film Manufacturing Process
Kim, Dae-Weon ; Jang, Seong-Tae ; Choi, Soon-Ryung ;
Journal of the Korean Institute of Resources Recycling, volume 21, issue 2, 2012, Pages 53~58
DOI : 10.7844/kirr.2012.21.2.053
A laboratory study was carried out to recover KI crystals with high purity from a waste solution generated from the production of polarizing film for LCD industry. The waste solution contains 1 to 4% KI, and other impurities such as B, PVA and etc. More than 95% purity of KI crystals were produced through refining process such as vacuum evaporation and fractional crystallization. Most of B compounds and impurities were removed by concentrating the waste solution until KI content reached about 50%. The KI crystals were washed with solvents to remove most of PVA which gave result in producing 99.5% purity of crystals. The overall recovery of KI was about 90% during the concentration process.
Recycling and refining of tantalum scraps by electron beam melting
Lee, Back-Kyu ; Oh, Jung-Min ; Choi, Good-Sun ; Kim, Hyung-Seok ; Lim, Jae-Won ;
Journal of the Korean Institute of Resources Recycling, volume 21, issue 2, 2012, Pages 59~65
DOI : 10.7844/kirr.2012.21.2.059
The refining effect of tantalum by electron beam melting(EBM) process for recycling tantalum scraps was investigated in the study. The purity of the tantalum metals refined by EBM was evaluated using glow discharge mass spectrometry (GDMS). From the result of GDMS, most impurities in the tantalum metals were removed by EBM down to a few mass ppm levels. The purity of the refined tantalum scraps was improved up to 5N (99.9991%) from 4 N (99.996%) of the initial tantalum scraps. The amount of metallic impurities in the tantalum was decreased from 30 ppm to 8 ppm. In addition, the gaseous impurities in the tantalum were decreased from 470 ppm to 50 ppm. Therefore a possibility of refining method for recycling tantalum scraps by EBM process was confirmed in this study.