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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 17, Issue 6 - Dec 2008
Volume 17, Issue 5 - Oct 2008
Volume 17, Issue 4 - Aug 2008
Volume 17, Issue 3 - Jun 2008
Volume 17, Issue 2 - Apr 2008
Volume 17, Issue 1 - Feb 2008
Selecting the target year
Waste Recycling Through Biological Route
Pradhan, Debabrata ; Kim, Dong-Jin ; Ahn, Jong-Gwan ; Park, Kyung-Ho ; Lee, Seoung-Won ;
Journal of the Korean Institute of Resources Recycling, volume 17, issue 2, 2008, Pages 3~15
Different toxic wastes are disposed of in our surroundings and these will ultimately threaten the existence of living organisms. Biohydrometallurgy, which includes the processes of bioleaching and bioremediation through the activities of microorganisms such as bacterial or fungal species, is a technology that has the potential to overcome many environmental problems at a reasonable economic cost. Bioleaching were carried out for dissolution of metals from different materials using most important metal mobilizing bacteria such as Thiobacillus ferrooxidans, Thiobacillus thiooxidans and Laptospirillum ferrooxidans. According to the reaction, bioleaching is parted as direct and indirect mechanism. In direct mechanism the bacteria oxidize the sulphides minerals by accepting electron and producing sulphuric acid in leaching media for their growth and metabolism. In other hand the indirect bioleaching is demonstrated as the oxidation of sulphides mineral by the oxidant like
produced by the iron oxidizing bacteria. Through this process, substantial amount of metal can be recovered from low-grade ores, concentrates, industrial wastes like sludge, tailings, fly ash, slag, electronic scrap, spent batteries and spent catalysts. This may be alternative technology to solve the high deposition of waste, which moves toward a healthy environment and green world.
Recent Status on the Recycling of Construction Waste and Research Trends - The Current Situation of Recycling Technology for Waste Resources in Korea(4) -
Oh, Jae-Hyun ; Kim, Mi-Sung ; Shin, Hee-Duck ; Min, Ji-Won ;
Journal of the Korean Institute of Resources Recycling, volume 17, issue 2, 2008, Pages 16~29
According to the statistical data of the Ministry of Environment, 47million tons of construction waste were generated, and 96.7% of them was recycled in 2005. However, the recycled products seem to be remained under low quality. Because mixed demolition and construction waste, so called DC Waste, including concrete, brick, plaster, lumber, plastics building materials, paper and some dirt and stone, is very variable and difficult to estimate its exact composition, it is regarded as having little or no value to the construction industry. 'The Research group on recycling of construction waste' was started by the Housing & Urban Research Institute(KNHC), which is sponsored as a large scale national project by the Ministry of Construction and Transportation. This research group intends to establish recycling system through planing, processing, developing practical technology, and eventually contribute to save natural resource and to vitalize the industry. In this paper an overview of DC waste management and recycling technology is given in some detail. Particularly, "recycling law of construction waste" and recent research trends on recycling of construction waste are discussed.
Bio-dissolution of waste of lithium battery industries using mixed acidophilic microorganisms isolated from Dalsung mine
Mishra, Debaraj ; Kim, Dong-Jin ; Ahn, Jong-Gwan ; Ralph, David E. ;
Journal of the Korean Institute of Resources Recycling, volume 17, issue 2, 2008, Pages 30~35
Mixed acidophilic bacteria were approached for leaching of cobalt and lithium from wastes of lithium ion battery industries. The growth substrates for the mixed mesophilic bacteria are elemental sulfur and ferrous ion. Bioleaching of the metal was due to the protonic action of sulfate ion on the metals present in the waste. It was investigated that bioleaching of cobalt was faster than lithium. Bacterial action could leach out about 80 % of cobalt and 20 % of lithium from the solid wastes within 12 days of the experimental period. Higher solid/liquid ratio was found to be detrimental for bacterial growth due to the toxic nature of the metals. At high elemental sulfur concentration, the sulfur powder was observed to be in undissolved form and hence the leaching rate also decreased with increase of sulfur amount.
Pickling of oxidized 304 Stainless Steel using Waste Acids from Etching Process of Silicon Wafer
Kim, Min-Seuk ; Ahn, Jong-Gwan ; Kim, Hong-In ; Kim, Ju-Yup ; Ahn, Jae-Woo ;
Journal of the Korean Institute of Resources Recycling, volume 17, issue 2, 2008, Pages 36~45
Pickling of oxidized 304 stainless steel has been investigated using rotating disk electrode in waste acid solutions generated from the etching process of silicon wafer in order to recycle them. The waste acid solution contained acetic, nitric, hydrofluoric acids, and silicon of
. Electrochemical behavior during the pickling was distinctively different between the original and silicon-removed acid solutions. Open circuit potential was continuously changed in the original solution, while it was discontinuously changed and fluctuated in the silicon-removed solution. Fast and abrupt removal of surface oxide layer with severe pitting was observed in the silicon-removed solution. It was found that solution temperature had the most influential effect on glossiness. Surface glossiness after pickling was decreased with solution temperature. At the same condition, the glossiness was higher in the original solution than in the silicon-removed solution.
Pyro-metallurgical Treatment of used OA Parts for the Recovery of Valuable Metals
Shin, Dong-Yeop ; Lee, Sang-Dong ; Jeong, Hyeon-Bu ; You, Byung-Don ; Han, Jeong-Whan ; Jung, Jin-Ki ;
Journal of the Korean Institute of Resources Recycling, volume 17, issue 2, 2008, Pages 46~54
It is well known that PCB (Printed Circuit Board) is a complex mixture of various metals. In this study, pyro-metallurgical process was investigated to extract valuable metallic components from the PCB scrap. PCB scrap was shredded and oxidized to remove plastic materials, and then, quantitative analysis were made. 15 mass %
mass %CaO-40 mass %
and 32 mass %
mass %CaO-10 mass %MgO, were chosen as basic slag compositions which are determined based on the quantitative analysis of PCB scrap. During experiments a super kanthal rotating furnace was used to melt and separate metallic components. Moreover the revolution effect on was the recovery of valuable metals from PCB scrap also investigated.
A Study on the Economic Estimation of the Recycling of Construction Waste
Park, Won-Woo ; Lee, Sang-Duck ; Min, Bo-Ra ; Park, Lee-Ran ; Gim, Ui-Gyeong ; Baek, Mi-Hwa ; Kim, Dong-Su ;
Journal of the Korean Institute of Resources Recycling, volume 17, issue 2, 2008, Pages 55~62
Amount of waste is always generated in industrialization process and it is gradually increasing. Domestic and industrial waste in 2003 increased by 9.5 percent than that of the last year(2002), whereas the amount of construction waste increased largely by 21 percent. Recently construction waste of total waste accounts for nearly 50 percent, waste concrete and Ascon from the construction waste takes up to 73 percent. Furthermore, amount of natural materials are gradually decreasing, that is, they are not sufficient any more. Owing to these reasons, the importance of recycling construction waste has been emphasized. The use of recycling aggregate makes the disposal of construction waste easier as well as protects environment from gathering raw aggregate. Also, it has the alternative effect economizing the insufficient new natural aggregate. This study employs the cost-benefit model to analyze the economic effect of construction waste recycling of Ascon which takes relatively high part of the total waste. The cost-comparison between raw aggregate and recycling aggregate were analyzed. With the model, the economic effect of Ascon recycling in 2003 and 2004 in capital area of Korea were analysed. Cost comparison between raw aggregate and recycling aggregate were also carried out. The result showed that the economic effect of Ascon recycling increased to 0.0808 for 2004 as compared 0.0694 for 2003. We could not conclude using above data, but this result shows that the economic benefit of Ascon recycling of construction waste has increased.
Studies on the Application of the Spent Alkaline Manganese Batteries Powder as an Adsorbent for Nickel Ion
Baek, Mi-Hwa ; Kim, Dong-Su ; Sohn, Jeong-Soo ;
Journal of the Korean Institute of Resources Recycling, volume 17, issue 2, 2008, Pages 63~69
The adsorption features of
onto spent alkaline manganese batteries powder have been investigated with the adsorbent dose, initial concentration of adsorbate and temperature as the experimental variables. The adsorption reaction of
ion followed the pseudo-second order rate model, and the adsorption rate constants(
) decreased with increasing initial concentration of nickel ion. The equilibrium adsorption data were fitted to the Langmuir and Freundlich models. The Freundlich model represents the equilibrium data better than the Langmuir model in this initial adsorbate concentration range. As the temperature increased, the adsorbed amount of nickel ion at equilibrium was also increased, which indicated that the adsorption reaction was endothermic. Based on the experimental results obtained along with temperatures, thermodynamic parameters such as
Cementation of Tin by Aluminium from Hydrochloric acid Solution
Ahn, Jae-Woo ; So, Sun-Seob ;
Journal of the Korean Institute of Resources Recycling, volume 17, issue 2, 2008, Pages 70~75
A study on the cementation for the recovery of tin with aluminium in the hydrochloric acid solution was carried out. Parameters, such as aluminium metal equivalent, pH, reaction time, reaction temperature and the concentration of chloride ions were investigated. The experimental results showed that the cementation rate of Sn(II) ions increased with increase of the addition amount of aluminium powders, temperature, pH and the concentration of chloride ions in hydrochloric acid solution. From the results, the optinum conditions for recovery of metallic tin by cementation with aluminium metal powders were proposed.
Trend on the Recycling Technologies for the used Manganese Dry Battery by the Patent Analysis
Shon, Jeong-Soo ; Kang, Kyung-Seok ; Han, Hye-Jung ; Kim, Tae-Hyun ; Shin, Shun-Myung ;
Journal of the Korean Institute of Resources Recycling, volume 17, issue 2, 2008, Pages 76~84
There are several kinds of battery such as zinc-air battery, lithium battery, manganese dry battery, silver oxide battery, mercury battery, sodium-sulphur battery, lead battery, nickel-hydrogen secondary battery, nickel-cadmium battery, lithium ion battery and alkaline battery, etc. These days it has been widely studied for the recycling technologies of the used battery from view points of economy and efficiency. In this paper, patents on the recycling technologies of the used manganese dry battery were analyzed. The range of search was limited in the open patents of USA (US), European Union (EP), Japan (JP), and Korea (KR) from 1986 to 2006. Patents were collected using key-words searching and filtered by filtering criteria. The trends of the patents were analyzed by the years, countries, companies, and technologies.