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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korea Organic Resource Recycling Association
Journal Basic Information
Journal DOI :
Korea Organic Resource Recycling Association
Editor in Chief :
Volume & Issues
Volume 20, Issue 4 - Dec 2012
Volume 20, Issue 3 - Sep 2012
Volume 20, Issue 2 - Jun 2012
Volume 20, Issue 1 - Mar 2012
Selecting the target year
Research on Managing Incineration Facility according to Prediction of Change in Amount of Waste
Ha, Sang An ;
Journal of the Korea Organic Resource Recycling Association, volume 20, issue 1, 2012, Pages 23~30
In the state that re-evaluation of calculating optimum amount of incineration in the future is needed, as considering the amount of waste, increase of heat value and change in floating population in each area in city B, the purpose of this research was to predict optimum available capacity in incineration plant and to study alternatives for the amount of disposal in each incineration plant based on the available capacity that was predicted. As a result of predicting the change in population based on progress of population in city B in the past, it is expected that an overall population is decreasing, but in some areas, population is concentrated due to increased apartment complexes, showing similar figures as the present. Moreover, when predicting the amount of waste through forecasting population, it is considered that the amount of waste by decreased population is also decreasing. However, the amount of combustible component among a total amount of waste is expected to increase, so it is predicted that the amount of incineration and combustible component will be reasonable except D incineration plant, Therefore, D incinerating plant showed 72.7% of rate of utilization of incineration facility compared to 59.1% of national rate. However, if shortfall of waste in the future can be used wisely in other areas, the use of renewable energy using burner useless heat can be maximized.
A Study on the Consciousness Survey for Visitors and Physical Properties of Refuse in Summer Resort - Focused on Beach and Valley in Gangwon province -
Park, Kwang-Ha ; Kwak, Dong-Kurl ; Kwon, Young-Du ;
Journal of the Korea Organic Resource Recycling Association, volume 20, issue 1, 2012, Pages 31~40
In order to making resources for the organic wastes, it is very important to understand for the life cycle of wastes before the physicochemical analysis and engineering technology. Therefore we try to fine the solution through the interdisciplinary consilience between natural science and social science for the management of refuge in summer resort. Summer visitors of beach answered that fly tipping of refuse was 65.56% and insufficient separation was 17.78% about the survey. But insufficient separation was 42.5% and fly tipping was 37.5% in valley. The survey for the effective methods at reducing refuse was represented that campaign and teaching was 47.78%, fine was 23.33% and using the standard bags was 18.89% in beach. Campaign and teaching was 37.5%, using the standard bags was 37.5% and fine was 15% in valley. Bulk density of refuse in gyeongpo beach was measured in
. This value was three times as much low than municipal solid wastes. Moreover, the composition of refuses in beach showed that combustible materials was 81.1% and incombustible materials was 18.9%. Moisture, ash and combustibles were analyzed 19.0%, 9.2% and 91.8% respectively.
Effects of Operating Temperature and Electrode Gap Distance on Electricity Generation in Microbial Fuel Cells
Choi, Young-Dae ; Lee, Myoung-Eun ; Song, Young-Chae ; Woo, Jung-Hui ; Yoo, Kyu-Seon ; Lee, Chae-Young ; Chung, Jae-Woo ;
Journal of the Korea Organic Resource Recycling Association, volume 20, issue 1, 2012, Pages 41~49
The effects of operating temperature and electrode gap distance on electricity generation were investigated in two-chamber type MFCs. Voltages across the external resistor
were enhanced approximately 1.4 times by the increase of operating temperature from
. The open circuit voltages (OCVs) were increased by the increase of temperature and the maximum power of MFC was obtained at higher current condition by increasing temperature and reducing electrode gap distance. The maximum power densities were enhanced from 1.9 to 2.4 times according to the experimented electrode gap distances by increasing temperature of
. The electricity generation was increased with the decrease of electrode gap distance. The effects of operating temperature and electrode gap distance were closely connected with the internal resistance of MFC system. That is, the increase of temperature and decrease of electrode gap distance reduced the internal resistance of MFC, resulting in the enhancement of electricity generation of MFC.
Ecotoxicological effects of Alum and Ferric chloride on the population of Eisenia fetida (Annelida : Oligochaeta)
Park, Kwang-Il ; Bae, Yoon-Hwan ;
Journal of the Korea Organic Resource Recycling Association, volume 20, issue 1, 2012, Pages 50~60
This study was carried out to evaluate the ecotoxicological effects of Alum and Ferric chloride on the population of Eisenia fetida in vermicomposting of sewage sludge. Using contact filter toxicity test, it was shown that LC50 of Alum and Ferric chloride on adult Eisenia fetida were 457.4 mg
and 1,665.2 mg
, respectively,which meant Ferric chloride had much higher acute toxicity on earthworm than Alum. Alum didn't affect on cocoon production, hatchability and number of hatched larvae of Eisenia fetida. Ferric chloride didn't have any efects on number of hatched larvae per cocoon, but reduced cocoon production and hatchability. Larval density of next generation was reduced by the food containing Alum and Ferric chloride. Above results indicated that the Alum and Ferric chloride could be one of the hazardous materials that made extinction of earthworm population when the sewage sludge treated with Alum and Ferric chloride was supplied to the earthworms.
Feasibility of Co-Digestion of Sewage Sludge, Swine Waste, and Food Waste Leachate
Kim, Sang-Hyoun ; Ju, Hyun-Jun ;
Journal of the Korea Organic Resource Recycling Association, volume 20, issue 1, 2012, Pages 61~70
Feasibility of co-digestion was investigated by a series of anaerobic batch experiments using sewage sludge, swine waste, and food waste leachate as substrates. The organic solid wastes were collected from M city, where the daily productions of sewage sludge, swine waste, and food waste leachate were 178 ton/d, 150 ton/d, and 8 ton/d, respectively. Both swine waste and food waste leachate showed superior methane yields, methane productivities, and organic pollutant removal efficiencies compared to sewage sludge. Co-digestion of the total amounts of organic solid wastes would enhance methane production by 5.60 times
. However, it also increase the amount of digestate by 1.88 times with 3.79 to 4.92 times higher pollutants (chemical oxygen demands total nitrogen, and total phosphorus) loading rates. Co-digestion of organic solid wastes is a valid strategy to enhance the performance of an anaerobic sludge digester and the energy independence of a wastewater treatment plant. Anyhow,the increment of digestate with higher pollutant loading would need a careful counterplan in the operation of the main stream of the treatment plant.
Change of Solubilization Characteristics of Rice Straw by Different Pre-treatments
Hong, Seung-Gil ; Shin, JoungDu ; Heo, Jeong-Wook ; Park, Woo-Kyun ; Kwon, Soon-Ik ; Park, Noh-Back ; Shin, Hyun-Seon ;
Journal of the Korea Organic Resource Recycling Association, volume 20, issue 1, 2012, Pages 71~77
In order to find a feasibility of applying an agricultural biomass to the anaerobic digestion system, the effects of pre-treatment of rice straw was investigated by different sizes,temperatures, ultrasonic frequencies, and with/without NaOH treatment on the change of soluble organic matter, which is generated most dominantly in Korea. It was observed that SCOD(soluble chemical oxygen demand) as the index for the decomposition of rice straw increased with the smaller particle size, higher reaction temperature and alkali treatment. With treatment of 5% NaOH, it was shown that the highest concentrations of SCOD were observed at 9,000 mg
, respectively. Agitating with ultrasonic irradiation could be enhanced SCOD of rice straw less than 3 cm with 40 kHz of ultrasound. Optimal RPM in this study was at 150 rpm regardless of reaction temperatures.
Optimization of bio-
production from acid pretreated microalgal biomass
Yun, Yeo-Myeong ; Jung, Kyung-Won ; Kim, Dong-Hoon ; Oh, You-Kwan ; Shin, Hang-Sik ;
Journal of the Korea Organic Resource Recycling Association, volume 20, issue 1, 2012, Pages 78~86
In this study, dark fermentative hydrogen production (DFHP) from acid pretreated microalgal biomass was optimized with via statistical experimental design. Acid concentration and reaction time were varied from 0.1 to 3% (v/w) and 10 to 60 min with substrate concentration of 76 g dry cell weight (dcw)/L and initial pH of 7.4, respectively. During the fermentation, pH was not controlled. The optimal condition was found that at
yield reached to 37.3 mL
dcw at 1.2% HCl and 48 min. Through regression analysis, it was found that
yield was well fitted by a quadratic polynomial equation (
=0.95). HCl concentration was the most significant factor influencing DFHP. The results of ANOVA verify that HCl concentration was the most significant factor influencing DFHP.