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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 16, Issue 6 - Dec 2007
Volume 16, Issue 5 - Oct 2007
Volume 16, Issue 4 - Aug 2007
Volume 16, Issue 3 - Jun 2007
Volume 16, Issue 2 - Apr 2007
Volume 16, Issue 1 - Feb 2007
Selecting the target year
Effect of magnetic separation in removal of Cr and Ni from municipal solid waste incineration (MSWI) bottom ash
Ahn, Ji-Whan ; Um, Nam-Il ; Cho, Kye-Hong ; Oh, Myung-Hwan ; You, Kwang-Suk ; Han, Gi-Chun ; Cho, Hee-Chan ; Han, Choon ; Kim, Byong-Gon ;
Journal of the Korean Institute of Resources Recycling, volume 16, issue 6, 2007, Pages 3~9
Although the ferrous material was separated by the magnetic separation before the incineration process, the municipal solid waste incineration bottom ash generated during incinerator in metropolitan area consists of many iron products which account for about
as well as ceramics and glasses. The formation of
(similar to pure Fe) on the surface of iron product was found during air-annealing in the incinerator at
, because Ni and Cr has a chemical attraction about iron is using to coat with Ni and Cr metals for poish or to prevent corrosion. Therefore, Fe-Ni Cr oxide can be formed on durface of the iron product and it can be separated from bottom ash through the magnetic separation. So, in this study, the separation ratio of heavy metals as magnetic separation and mineralogical formation of Fe-ion(heavy metal) in ferrous metals corroded were investigated. As the result, the separation ratio of Ni and Cr based on particle sizes accounted for about
, and Cu and Pb accounted for below 20%. Also, the leaching concentration of Ni and Cr in bottom ash separated by magnetic separation was lower than that in fresh bottom ash.
Effect of Carbon on Electrode Characteristics of
Lee, Churl-Kyoung ; Park, Jeong-Kil ; Sohn, Jeong-Soo ;
Journal of the Korean Institute of Resources Recycling, volume 16, issue 6, 2007, Pages 10~19
The mechanical process followed by hydrometallurgical treatment has been developed in order to recover cobalt and lithium from spent lithium ion battery. In the previous study, a citrate precursor combustion process to prepare cathodic active materials from the leaching solution was elucidated. Resynthesis of electrode materials should be more valuable in spent battery recycling. Conventional slurry mixing of
and carbon cannot make uniform distribution, and therefore the cathode cannot reach the theoretical charge-discharge capacity and is easily degraded during the charge-discharge cycling. In this study, ultra-fine
powders has been prepared by modification of the combustion process and fabricated the enhanced cathode by modification of mixing method of
and carbon added.
Durability of Mortar Matrix Replaced with Recycled Fine Aggregates
Kim, Jong-Pil ; Lee, Seung-Tae ; Jung, Ho-Seop ; Park, Kwang-Pil ; Kim, Seong-Soo ;
Journal of the Korean Institute of Resources Recycling, volume 16, issue 6, 2007, Pages 20~27
This paper presents a detailed experimental study on the durability properties of mortar matrix made with two kind of recycled fine aggregates(RAA, RAB) and five replacement levels (0, 25, 40, 75 and 100) of the recycled fine aggregates as a partial replacement of natural fine aggregate (NA). The durability properties of mortar matrix was evaluated using compressive strength, chloride ion ingress, sulfate attack and carbonation. The test results indicated that the water absorption and Adhered mortar of the recycled fine aggregate was a major factor controlling durability properties. Hereafter, when using built recycled fine aggregate is expected, appropriate removal Adhered mortar and reasonable replacement ratio of recycled fine aggregates was 25% weight of cement are advised to apply to the concrete materials.
Coal gasification with High Temperature Steam
Yun, Jin-Han ; Kim, Woo-Hyun ; Keel, Sang-In ; Min, Tai-Jin ; Roh, Seon-Ah ;
Journal of the Korean Institute of Resources Recycling, volume 16, issue 6, 2007, Pages 28~33
Coal is the most abundant energy source and deposited in every area of world. Combustion process with lower efficiency has been mainly used. Therefore, implementation of more efficient technologies, involving gasification, combined cycles and fuel cells, would be a key issue in the plans for more efficient power generation. In these technologies, gasification has been studied for decades. However, coal gasification to high value combustible gas such as hydrogen and carbon monoxide is focused again due to high oil price. The gaseous product, called syngas, can be effectively utilized in a variety of ways ranging from electricity production to chemical industry (as feedstock). In this study, coal gasification with ultra high temperature steam has been performed. The effect of steam/carbon ratio on the produced gas concentrations, gasification rate and additional products like tar, ammonia and cyan compounds has been determined.
A Preliminary Study on Tantalum Recycling from Obsolete Condenser by Multidisciplinary Process
Lee, Hoo-In ; Kim, Sang-Bae ; Kim, Byong-Gon ; Choi, Young-Yoon ;
Journal of the Korean Institute of Resources Recycling, volume 16, issue 6, 2007, Pages 34~38
For recycling of tantalum from obsolete condenser, physical separations and chlorination of tantalum scraps with
were investigated. The recovery ratio of tantalum from obsolete condenser was 98% by using a multidisciplinary process of crushing by stamp mill, wet gravity separation by the shaking table, and air classification. In the chlorination reaction of non-oxidized Ta anode with
, the highest weight loss ratio is at least 60%, while in the chlorination reaction of Ta anode with
, the reaction rate for the oxidized Ta anode is faster than that of the non-oxidized Ta anode.
Removal of Copper and Zinc Ions by Neutralization from the Spent Sulfate Solutions of Brass Bulb Base
Lee, Man-Seung ; Ahn, Jae-Woo ; Lee, Chang-Hae ;
Journal of the Korean Institute of Resources Recycling, volume 16, issue 6, 2007, Pages 39~45
Optimum condition for neutralization has been studied to remove the copper and zinc ions from spent sulfate solutions which resulted from the acid washing of the base of brass bulb. Chemical distribution of copper and zinc species and the variation of solubility of the two ions with solution pH were obtained by considering the complex formation reaction and mass balance. Removal percentage of zinc was more sensitive to solution pH than that of copper. This results from the fact that the solubility of zinc is higher than that of copper. The form of coagulant affected little the removal percentage of zinc, while addition of coagulant as the phase of solution resulted in higher removal percentage of copper than as the phase of solid.
A Comparative Experiment on the Emission Gas Characteristics of Domestic RDF
Park, Myung-Ho ;
Journal of the Korean Institute of Resources Recycling, volume 16, issue 6, 2007, Pages 46~51
This study aimed at developing high-efficiency RDF(refuse derived fuels) fuel in order to use RDF energy rationally and to recycle industrial product. As most studies in this area are concentrated in large combustion apparatuses such as kilns, but this study was focused on the small-sized heating systems, applying them directly to grate type boiler which has a heating capacity of
. The different kinds of fuel are experimented including RDF. Coke and Waste Tire. First, for this, we experimented and analyzed RDF to see the change in its mass and heating value. Also, four kinds of exhaust gas are sampled by gas analyzer including CO,
, NO and
at different temperature. As a result, the levels of CO concentration of RDF are higher than these of coke and waste tire. But, the levels of NO,
concentration of RDF and coke were lower then the levels when waste tire is burned.
Basic study and patent analysis of electrochemical denitrification from industrial wastewater
Lee, Churl-Kyoung ;
Journal of the Korean Institute of Resources Recycling, volume 16, issue 6, 2007, Pages 52~60
Denitrification from aqueous solution was investigated through patent analysis and electrochemical denitrification experiment. Among several candidates, biological treatment and oxidation/reduction method are mainly discussed. Recently, patent pending concerning to electrochemical treatment is increasing. Based on basic electrochemical study, total nitrogen was removed up 47% by 1-hour galvanostatic electrolysis with Fe cathode and Pt anode. More applicable technique to industry could be mentioned combination of two or more technologies suitable to waste water characteristics. In the case of small and concentrate effluent, combination of chemical and electrochemical treatment would be recommendable because nitrate could be easily converted to nitrite by chemical treatment, and in that case denitrification by electrolysis becomes more efficient and metal ions from chemical treatment can be recovered during electrolysis.
A case study on illegal dumping of industrial wastes
Lee, Hyun-Yong ; Lee, Seung-Woo ; Ryoo, Byung-Soon ;
Journal of the Korean Institute of Resources Recycling, volume 16, issue 6, 2007, Pages 61~67
Teshima is a quiet and beautiful island, but started to be imaged as an "island of wastes" because of the 600,000 tons of industrial wastes thrown there illegally. Now it symbolizes the problem of industrial wastes in Japan. Teshima development company, an industrial waste disposer, started to dispose industrial wastes illegally in the west side of the island, since the late 1970s. Police Station exposed this illegal act, and arrested 6 persons of the company, including its president, in charge of having violated the Waste Disposal and Public Cleansing Law in 1991. This illegal disposition has continued for 13years until it was exposed by the police. Teshima case of industrial wastes are introduced in this paper.