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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 24, Issue 6 - Dec 2015
Volume 24, Issue 5 - Oct 2015
Volume 24, Issue 4 - Aug 2015
Volume 24, Issue 3 - Jun 2015
Volume 24, Issue 2 - Apr 2015
Volume 24, Issue 1 - Feb 2015
Selecting the target year
A Review of Desulfurization Technology using Limestone in Circulating Fluidized Bed Boiler Type Power Plant
Baek, Chul-Seoung ; Seo, Jun-Hoyung ; Ahn, Ji-Whan ; Han, Chon ; Cho, Kae-Hong ;
Journal of the Korean Institute of Resources Recycling, volume 24, issue 5, 2015, Pages 3~14
DOI : 10.7844/kirr.2015.24.5.3
This study investigated that status of domestic and international furnace desulfurization and desulfurization characteristics of limestone for fluidized bed use depending on the technology for CFBC one of the CCPs. Limestone-based desulfurizing agent is one of the superior elements which are optimal at around
on high temperature desulfurization. And effectiveness of desulfurization process can be determined by the desulfurization experiment method such as diffusion reaction of the diaphragm of the absorber surface, the size of the particles, the pores of the quantity, size and structure. And, desulfurization efficiency depending on geological and crystallographic properties and calcination process of limestone needs additional research in the future.
A Kinetic Studies of the Pyrolysis of Waste Plastic Based on the Thermogravimetic Analyses
Jung, Won Hak ; Hwang, Hyeon Uk ; Kim, Myung Gyun ; Sun, JianFeng ; Mutua, Nzioka Antony ; Kim, Young Ju ;
Journal of the Korean Institute of Resources Recycling, volume 24, issue 5, 2015, Pages 15~21
DOI : 10.7844/kirr.2015.24.5.15
Waste plastic differs in its speed of combustion owing to its variety in composition as well as kinds of plastic. This study is aimed at examining the thermal weight analysis and determination of its kinetics in order to derive the design element in pyrolysis of RPF (Refused Plastic Fuel) as the plastic solid fuel. Based on the result of TGA (Thermogravimetric analysis), kinetic characteristics were analyzed by using Kissinger method which are the most common method for obtaining activation energy, and experimental conditions of TGA were set as follows: in a nitrogen atmosphere, gas flow rate of 20 ml/min, heating rate of
, and maximum hottest temperature of
. The method used for determining the property of waste plastic when thermally decomposed was thought feasible as the basic data in deciding the performance, design, and optimal operating condition of the reactor in the actual reactor.
The Research on Upcycling of Recovered Pulp and Mixed Plastic from Soiled Diaper
Kim, Kyung Shin ;
Journal of the Korean Institute of Resources Recycling, volume 24, issue 5, 2015, Pages 22~32
DOI : 10.7844/kirr.2015.24.5.22
This study aims to discuss the concept of upcycling as it applies to diaper recycling. Upcycling is the process of converting waste materials into new products of better quality. Through benchmarking of upcycling examples, useless objects can be transformed into valuable materials. However, current upcycling examples determine value creation related to qualitative elements, so that it is difficult to establish any quantitative strategy of upcycled products. Therefore, this study expands a B2B (Business to business) product for improving market availability and establishes a direction using both recovered pulp and mixed plastic at the same time. As a result, the upcycling method for recovered pulp and mixed plastics, is the application of a cellulose insulator. Within the near future, the high quality insulator market will grow more than three times. An upcycling strategy targeting the high quality insulator market needs to be established.
Recovery of Nitric Acid from Waste Solder Stripper by Diffusion Dialysis
Ryu, Seong-Hyung ; Kim, Tae-Young ; Ahn, Nak-Kyoon ; Gang, Myeong-Sik ; Ahn, Jae-Woo ; Ahn, Jong-Gwan ;
Journal of the Korean Institute of Resources Recycling, volume 24, issue 5, 2015, Pages 33~39
DOI : 10.7844/kirr.2015.24.5.33
A basic study was conducted to effectively recover nitric acid from a waste solder stripper by diffusion dialysis using anion exchange membranes. The effects of flow rate, flux ratio, nitrate concentration, and metallic ion types and concentration on the recovery percentage of nitric acid were investigated. The recovery percentage of nitric acid was decreased with the increase of flow velocity. But the recovery percentage of nitric acid was increased as the increase of flux ratio(W/F) and showing a recovery percentage of nitric acid of about 99% at a flux ratio of 1.5 or more. As the increase of nitric acid concentration in feed solution, the recovery percentage of nitric acid was increased up to 3.0M, but in case of greater than 3.0M, the recovery percentage gradually was decreased. Leakage percentage of metallic ions through the membrane were in the order of Pb, Na and Cu but Fe and Sn did not leakaged. As a result of diffusion dialysis using real waste solder stripper at a flow rate of
, W/F = 1.3, a recovery percentage of nitric acid of approximately 94% was gained.
The Effect of Waste Disposal Volume on Earnings Management Behavior in the Construction Waste Disposal Industry - Focused on the Size of the Licensed Storage Capacity and the Location of the Waste Disposal Site -
Kim, Dae-Bong ; Lee, Hyo-Ik ;
Journal of the Korean Institute of Resources Recycling, volume 24, issue 5, 2015, Pages 40~55
DOI : 10.7844/kirr.2015.24.5.40
The purpose of this study is to analyse whether the waste disposal volume level in the construction waste disposal industry makes a different effect on earnings management behaviour by size of the licensed storage capacity and by location of the waste disposal site. The empirical results of this study are as follows. First, the waste disposal volume significantly influences earnings management behavior. When it comes to the size of licensed storage capacity in the small-sized capacity firms, the smaller waste disposal volume firms make more aggressive earnings management by using discretionary accruals. On the other hand, in the large-sized capacity firms, more waste disposal volume firms report higher earnings by adjusting more discretionary accruals. Second, the effects of waste disposal volume on the earnings management show different pattern depending on the location of waste disposal site. When the firms are located in the non-capital regions, the smaller waste disposal volume firms report higher earnings by adjusting discretionary accruals as well as by using real activities earnings management. However, the firms located in the capital regions show more aggressive earnings management when they have higher waste disposal volume level.
Solvent Extraction Separation of Re (VI) from Hydrochloric Acid Leaching Solution of Spent Super Alloy by Alamine 304-1
Ahn, Jong-gwan ; Jung, Hee-Kyeoung ; Jang, Jae-Young ; Kim, Min-Seuk ;
Journal of the Korean Institute of Resources Recycling, volume 24, issue 5, 2015, Pages 56~62
DOI : 10.7844/kirr.2015.24.5.56
Solvent extraction experiments for the separation and recovery of Re from hydrochloric acid leaching solution of spent super alloy by Alamine 304-1 were carried out. The effects of some variables, such as the nature and concentration of the extractants, HCl concentration, and the presence of impurities were investigated. The synthetic solutions of Re were prepared by dissolving ammonium perrhenate (APR), Alamine304-1, Cyanex272 and
were used solvent extractants distilled in kerosene. The extraction percentage of Re by Alamine304-1 was higher than the other extractants as Cyanex272 and
and the percentage is about 99%. Only 99% of Re was extracted in the presence of Al, Co and V in HCl solution.
Experimental Study on the Properties of Recycled Concrete using Recycled Coarse Aggregates and Steel Slag Fine Aggregates
Lee, Jaesung ; Na, Okpin ;
Journal of the Korean Institute of Resources Recycling, volume 24, issue 5, 2015, Pages 63~71
DOI : 10.7844/kirr.2015.24.5.63
The purpose of this study is to investigate the optimum replacement rate and material properties of eco-friendly recycled concrete using recycled coarse aggregates and rapid-chilled steel slag fine aggregates. The replacement rate of recycled coarse aggregates was increased from 30% to 50% of total volume of coarse aggregates and the rapid-chilled steel slag aggregates were substituted for 10% to 50% of total volume of fine aggregates. As a result, the increment of recycled coarse aggregates in concrete caused the reduction of the compressive strength. On the other hand, as increasing the replacement ratio of rapid chilled steel slag aggregates, the compressive strength was enhanced. Furthermore, the optimum use of rapid chilled steel slag aggregates was suggested up to 20~30% of fine aggregates and the use of it could be helpful to expand the replacement rate of recycled aggregates.
Current Status on the Recycling of Domestic Major Non-ferrous Metal Scraps
Park, Hyungkyu ; Sohn, Hosang ;
Journal of the Korean Institute of Resources Recycling, volume 24, issue 5, 2015, Pages 72~79
DOI : 10.7844/kirr.2015.24.5.72
Since there are many kinds of non-ferrous metal, it is difficult to investigate the current status on the recycling of all the non-ferrous metals. Therefore, the survey is confined to some commercially important non-ferrous metals such as copper, aluminum, zinc, lead, nickel and magnesium in this article. Domestic demand and production of these non-ferrous metals in recent years (2010-2014) and recycling ratio of the scraps are estimated briefly here.
Selective Solvent Extraction of In from Synthesis Solution of MOCVD Dust using D2EHPA
Im, Byoungyong ; Swain, Basudev ; Lee, Chan Gi ; Park, Jae Layng ; Park, Kyung-Soo ; Shim, Jong-Gil ; Park, Jeung-Jin ;
Journal of the Korean Institute of Resources Recycling, volume 24, issue 5, 2015, Pages 80~86
DOI : 10.7844/kirr.2015.24.5.80
The separation of In from the synthesis solution with Ga, Fe, and Al has been studied by the solvent extraction using D2EHPA as an extractant. The effects as a function of the concentration of extractant and HCl on the extraction of In were investigated. The extraction of In and Ga increased with decreasing HCl concentration, but that of Fe and Al was independent. Separation factor between In and Ga of 115 was obtained at 1.0 M D2EHPA in the presence of 0.5 M HCl of feed solution. Consequently, this study shows that D2EHPA is suitable extractant for In extraction from the synthesis solution. Extraction efficiency and separation factor could be increased by controlling HCl and extractant concentration.