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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 13, Issue 6 - Dec 2004
Volume 13, Issue 5 - Oct 2004
Volume 13, Issue 4 - Aug 2004
Volume 13, Issue 3 - Jun 2004
Volume 13, Issue 2 - Apr 2004
Volume 13, Issue 1 - Feb 2004
Selecting the target year
A Study on the Behavior of Heavy Metal Ions and Hydration of Clinker Utilizing Municipal Solid Waste Incineration Ash
Ahn Ji Whan ; Han Gi Chun ; Han Ki Suk ;
Journal of the Korean Institute of Resources Recycling, volume 13, issue 4, 2004, Pages 3~10
The intension of this study is to produce ordinary portland cement using ash, both bottom ash and fly ash, obtained from municipal solid waste incineration ash (MSWI). We used limestone, waste molding sand, shale, slag from converting furnaces and fly ash as main raw materials and mixed them, setting the lime saturation factor (LSF) within 91.0, the silica modulus (SM) within 2.40, and iron modulus (IM) within 1.80. We conducted tests adding bottom ash alone 1, 2 and 3％ by weight, respectively, and a mixture of bottom ash 0.9％ and fly ash 0.1 ％ by weight. The result of analysis on clinker shows that the more ash is added, the lower the burnability index (B.I.) falls, lowering the mineral evolution of calcium silicate accordingly. From the measurement of compressive strength we have learned that the more ash is used, the lower the strength becomes.
Caustic Soda Decomposition and Leaching of Monazite in Hong-Cheon Area Deposit.
Kim Joon-Soo ; Yoon Ho-Sung ; Kim Sung-Don ; Kim Chul-Joo ; Lee Jin-Young ;
Journal of the Korean Institute of Resources Recycling, volume 13, issue 4, 2004, Pages 11~16
In this study, treatment conditions for monazite concentrate in Hong-Cheon area deposit were studied with NaOH fritting decomposition and HCl leaching experiments. At condition of NaOH fritting decomposition, it was appropriate to adopt particle size of -200 mesh monazite, reaction temperature of about
and NaOH/TREO mole ratio of 6. In case of HCl leaching for decomposed product, it was appropriate to use hydrochloric acid of above 8N with leaching temperature of above
, leaching time of 2 hrs and pulp density of about 10%. A rate of decomposition and leaching for monazite was above 90% under optimum conditions. Sodium phosphate compound was effectively recovered from NaOH decomposed solution, and mixed rare earth chloride solution was prepared with HCl leaching of decomposed product.
Treatment of Thickened Sewage Sludge by Using the Sea Waste Resource and the Radiation Technology
Yoo Dae-Hyun ; Lee Jae-Kwang ; Lee Myun-Joo ; Kang Ho ;
Journal of the Korean Institute of Resources Recycling, volume 13, issue 4, 2004, Pages 17~22
This study was focused on the treatment of thickened sewage sludge. General bacteria and E. coli were disinfected over 99％ and organic compounds were decomposed after irradiation. It was suggested that this process can be an alternative for digestion Process. The moisture content in sludge was decreased over 10％ (w/w) and the coagulation of sludge particles was enhanced by irradiation at the dose of 15 kGy and addition of sea waste resource (star-fish) as a dewatering aid.
Adsorption Features of Lead Ion on Waste Undaria pinnatifida
Seo Myung-Soon ; Kim Dong-Su ;
Journal of the Korean Institute of Resources Recycling, volume 13, issue 4, 2004, Pages 23~31
Basic studies have been conducted regarding the attempt of the utilization of waste Undaria pinnatifida as an adsorbent for the adsorption treatment of lead-containing wastewater. Undaria pinnatifida was found to be chiefly composed of hyo-carbonaceous compounds and have a fairly high specific surface area, which suggesting the possibility of its application as a Potential adsorbent. The electrokinetic Potential of Undaria pinnatifida particles was observed to be negatively highest at around pH 8 and the fact that its electrokinetic potentials are negative at the whole pH range supported it might be an efficient adsorbent especially for cationic adsorbates. Under the experimental conditions,
was found to mostly adsorb onto Undaria pinnatifida within a few minutes and reach the equilibrium in adsorption within ca. 30 minutes. The adsorption of
was exothermic and explained well by e Freundlich model. Acidic pretreatment of Undaria pinnatifida enhanced its adsorption capacity for
, however, the reverse was observed for alkaline pretreatment. The formation of organometallic complex between
and some functional groups on the surface of Undaria pinnatifida was considered to be one of the main drives for adsorption. Finally the adsorbability of
was examined to be rather affected by several solution features such as the coexistence of other adsorbate, the variation of ionic strength, and the concentration of complexing agent.
Leaching Behaviour of vanadium from Orimulsion ash
Park Kyung-Ho ; Yoon Seung-Han ; Nam Chul-Woo ; Choi Yeung-Ki ; Yoon Oh-Seub ;
Journal of the Korean Institute of Resources Recycling, volume 13, issue 4, 2004, Pages 32~38
Recently, Orimulsion (a bitumen-in emulsion) has received increasing attention as an alternative fuel. Orimulsion combusion produces an ash rich in V, Ni and Mg which are processed to recover metals. As a basic study to recover V from Orimulsion ash, physico-chemcial properties and leaching behaviours were investigated. Orimulsion ash was fine size grains (
) with 16% V, 4 % Ni and 9% S. Vanadium was easily leached in water because Orimulsion ash was mainly constituted of metal sulfates. However, the increase of leaching temperature decreased the extraction percentage of vanadium because of hydrolysis of V(V) to vanadium pentoxide. The addition of sulfuric acid could increase the leaching percentage vanadium. In case of alkaline leaching for selective recovery of vanadium, the oxidzing agent such as
is required to improve the leaching per-centage
Solvent Extraction of Nd from Chloride Solution with PC88A
Lee Gwang-Seop ; Lee Jin-Young ; Kim Sung-Don ; Kim Joon-Soo ; Lee Man-Seung ;
Journal of the Korean Institute of Resources Recycling, volume 13, issue 4, 2004, Pages 39~45
Solvent extraction experiments of Nd from chloride solution were studied with PC88A. Solvent extraction reaction of Nd with PC88A and the equilibrium constant were evaluated from the extraction experimental data and extraction conditions. Nd
,org + 3H/sun
, K=0.25 The predicted distribution coefficients of Nd agreed well with the experimental results. The effect of saponification of PC88A on the extraction of Nd and on the change of equilibrium pH was investigated. Saponified PC88A present as a monomer in the organic reaction and enhanced the distribution coefficient of Nd. The initial extraction conditions had a great effect on the equilibrium pH.
New Trend of Incineration Technology for Waste Treatment
Kim Seong-Jung ; Park Hyun-Seo ;
Journal of the Korean Institute of Resources Recycling, volume 13, issue 4, 2004, Pages 46~52
The present main research direction of waste treatment is the development of incineration system for low pollution. Also, heat value of waste is increased because of the rising of living standard, environmental consideration and collection of sorted waste for recycling. Therefore, many researches have been continued for solving ash problem including heavy metals, dioxin problem and high energy efficiency by use of high heat value. This study is described for the facilities of pyrolysis system, pyrolysis-melting system, pyrolysis-gasification melting system.