• Journal of environmental and Sanitary engineering
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• v.15 no.3
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• pp.62-69
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• 2000

In point of recycling wastes, batch test was conducted to examine the neutralization and Fe removal from laboratory wastewater using wastes. Oyster shell and slag had a buffer capacity to neutralize an acidic wastewater but tire rubber didn't. With increasing reaction time, dosage and agitation speed, Fe was well removed by wastes. As a result on the experiments of Freundlich isotherm, the adsorption intensities(1/n) were 0.32∼0.46 and the adsorption capacities(k) were 4.3∼4.6 for removing Fe from laboratory wastewater by wastes. In view of these results, it was estimated that wastes containing the similar compositions as these could utilize the neutralization and adsorption of heavy metals in laboratory wastewater.

• Journal of environmental and Sanitary engineering
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• v.7 no.1
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• pp.95-102
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• 1992

This study was carried out to investigate the domestic solid wastes which produce through the daily life. As the valuable resources, the wrapping materials were focused for the main subject together with the kitchen garbage which is concerned with actual situation. The solid wastes must be recovered and reused effectively under the proper management as the resources, while, the kitchen garbage have to consider with viewpoint of the diminution for the treatment cost and the national economy. Nowadays, the wrapping wastes occupied more than sixty percent of the total domestic wastes in Korea. On the other hand, wrapping paper occupied over fifty percent of the total goods package in the supermarket, therefore, every citizen should aware of the problem and participate the action plan to minimize the daily life wastes.

• Journal of the military operations research society of Korea
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• v.22 no.1
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• pp.18-29
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• 1996

Nowadays, flooding wast is serious problem to mankind and the endeavour for solving waste problem is performed in connection with environmental problem and natural resource problem. In Korea, there are a lot of movements related to reduction of waste, too. As the solution of these problems, recycling is recommanded and many kinds of recycling technique are devised. In America, military has been playing an important role in recycling area for a long time. This paper is the survey of several articles and working papers about America military's recycling research. We investigated the recycling of water, construction and demolition wastes etc. These research results are very important in real field of military. It is considered our military has to prepare this recycling problem and now it's the right time. All of these can be adapted to our military, commercial companies and civilians through some modification. We suggest that our military should cope with recycling problem more deliberately.

• Journal of the Korea Organic Resources Recycling Association
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• v.13 no.3
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• pp.51-62
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• 2005

The effects of the processing mixture of food wastes and various organic wastes when vermicomposted on earthworm(Eisenia foefida) growth, the cast production amounts and the chemical properties of casts were evaluated. The substrates used in this experiments were cow manure, pig manure sludge, fermented pig manure with sawdust, nightsoil sludge, and sewage sludge and were respectively mixed with food wastes at a ratios of 50:50(v/v). The control consisted of food wastes alone without other wastes. All of earthworm died in the food wastes 100%, therefore the process of food wastes alone by vermicomposting was impossible in this experiment. Worm cast produced sufficiently contained quantities of available phosphorus, exchangeable potassium, exchangeable magnesium, and cation exchange capacity. The increase of earthworm's biomass occured on the mixtures of food wastes and cow manure, fermented pig manure with sawdust. Dry weight of worm cast was the highest on the mixtures of food wastes and fermented pig manure with sawdust and the proportion of cast weight after vermicomposting was significantly the highest on the mixtures of food wastes and cow manure($p{\leq}0.05$). Also, the mixtures of food wastes and cow manure, and fermented pig manure with sawdust showed a positive values of conversion rate and conversion efficiency rate of organic matter to earthworm tissue than that of other treatments. These results suggested that cow manure and fermented pig manure with sawdust are adequate to process with food wastes by vermicomposting.

• Proceedings of the Korean Institute of Resources Recycling Conference
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• 1993.03a
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• pp.22.2-22
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• 1993

• Proceedings of the Korean Institute of Resources Recycling Conference
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• 2003.10a
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• pp.236-240
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• 2003

• Proceedings of the Korean Institute of Resources Recycling Conference
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• 2006.05a
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• pp.164-167
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• 2006

• Proceedings of the Korean Institute of Resources Recycling Conference
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• 2003.10a
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• pp.231-235
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• 2003

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2008.06a
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• pp.839-840
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• 2008

• Clean Technology
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• v.18 no.1
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• pp.111-119
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• 2012

These days many companies are trying to reduce, recycle and reuse their wastes. Even though many wastes can be recycled, those are incinerated or landfilled. To solve these problems, there are many projects to make efforts to recycle wastes in especially the industrial complexes. But, due to the absence of information about waste recycling, recyclable wastes are still incinerated or landfilled. Based on these research background, this study aims to suggest the evaluation methodology of the $CO_2$ emissions and cost reduced by circulating the industrial waste to resource. We evaluated the environmental and economic effect between companies which emit the plastic waste and organic solvent waste and use them as raw-materials in the off-line recycling information exchange network. The environmental and economic aspects were analyzed comparing waste recycling with waste incineration. By recycling the plastic waste as raw-materials, $CO_2$ emission were reduced 1,070 ton in 2009 and 1,234 ton in 2010 and 657.4 million won in 2009 and 755.0 million won in 2010 were reduced. In recycling the organic solvent waste, 7.3 ton-$CO_2$ in 2010 and 5.6 ton-$CO_2$ in 2011 were reduced and 15.9 million won in 2010 and 12.2 million won in 2011 were reduced.