• Resources Recycling
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• v.18 no.4
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• pp.14-23
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• 2009

In terms of resources recycling and resolving waste disposal problems, it is very important to recover precious metals like Au, Ag and Pd and valuable metals like Cu, Sn and Ni from the scraps of waste electrical and electronic equipment(WEEE) that consists of detective electrical and electronic parts discarded during manufacturing electrical and electronic equipments and waste electrical and electronic parts generated during disassembling them. In general, the scraps of WEEE are composed of various metals and alloys as well as refractory oxides and plastic components. Precious and valuable metals from the scraps of WEEE can be recovered by gas-phase-volatilization, hydrometallurgical, or pyrometallurgical processes. However, the gas-phase-volatilization and hydrometallurgical processes have been suggested but not yet commercialized. At the present time, most of the commercial plants for recovering precious and valuable metals from the scraps of WEEE adopt pyrometallurgical processes. Therefore, in this paper, the technical and environmental aspects on the important pyrometallurgical processes through literature survey are reviewed, and the scale-up result of a new pyrometallurgical process for recovering the precious and valuable metals contained in the scraps of WEEE using waste copper slag is presented.

• Resources Recycling
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• v.23 no.4
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• pp.58-68
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• 2014

The statistics showed that about 1 billion automobiles were registered and about 40million ELVs occurred on the world in 2010. So all advanced countries including EU had plan to increase the ELVs recycling rate up to 95% of total by 2015. The Korean government also established a target for raising up to 95% of ELVs recycling rate according to 'Act on the Resource Circulation of Electrical and Electronic Equipment and Vehicles'. Before being satisfied with the requirement of recycling of ELVs however, the problem is issued on the scraps of plastic and non-ferrous metals which are now being abandoned and reclaimed with no adequate reuse. Therefore, as a part of preceding investigation on the present state of ELVs recycling in the world, this preliminary investigation study was carried out focusing on the state of EU's disposal and management regulations of ELVs and SLF/ASR including the world trend of disposal and management regulations of ELVs and SLF/ASR.

• Resources Recycling
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• v.17 no.6
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• pp.3-9
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• 2008

The Directive on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment commonly referred to as the Restriction of Hazardous Substances Directive or RoHS was adopted in February 2003 by the European Union. The RoHS directive took effect on 1 July 2006, and is required to be enforced and become law in each member state. This directive restricts the use of six hazardous materials in the manufacture of various types of electronic and electrical equipment. It is closely linked with the waste electrical and electronic equipment directive (WEEE) 2002/96/EC which sets collection, recycling and recovery targets for electrical goods and is part of a legislative initiative to solve the problem of huge amounts of toxic e-waste.

• Clean Technology
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• v.16 no.3
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• pp.155-161
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• 2010

Product-based environmental regulations, such as RoHS, REACH, EuP, etc., on electrical and electronic equipments, chemicals, and so on, initiated by the European Union, are becoming a global trend. These regulations can create barriers to trade among nations worldwide and may thereby have a direct impact on the function of internal market. If domestic companies utilize well the international environmental regulations in advance, they will get good opportunity for expanding overseas market. In this paper the current status of countermeasure for overcoming the international environmental regulations in domestic industries was investigated and the future plans were discussed.

• Clean Technology
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• v.18 no.4
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• pp.373-378
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• 2012

The end-of-life vehicles (ELV) are important recycling sources, and there are several stages involved in the recycling such as dismantling, shredding, and treatment of shredder residues (ASR). The legal recycling rate should be at least 95% on and after 2015, while we need a proper system to monitor recycling of ELV components and to calculate the practical recycling rate. The paper suggests a monitoring system that calculates practical recycling rates of dismantled components by use of a database of standard recycling rate as well as a web-based monitoring, which is linked to the Eco Assurance system for electric & electronic equipment and vehicle (EcoAS). Also the system supports dismantling and monitoring process by incorporating a standard vehicular component database, which facilitates recording dismantled weight data but also monitoring of dismantled components.

• Proceedings of the KAIS Fall Conference
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• 2009.05a
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• pp.536-538
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• 2009

현재 세계 각 국은 폐차에 의한 환경오염을 줄이기 위하여 규제를 강화하고 있으며 특히 EU(European Union)에서는 현재 85%에 머무르고 있는 재활용율을 2015년까지 95%로 올릴 것을 요구하고 있다. 이에 발맞추어 2007년 우리나라도 "전기전자제품 및 자동차의 자원순환에 관한 법률"을 제정하였다. 자동차 중량의 75%를 차지하는 철은 비교적 높은 재활용율을 보이고 있으나 나머지 25%를 구성하는 플라스틱, 유리 고무 등의 비금속류와 구리, 니켈 알루미늄 등의 비철금속류는 재활용율이 이에 미치지 못하고 있다. 본 논문에서는 자동차에서 많이 사용되는 대표적인 비철금속인 구리에 대하여 재활용의 현주소를 점검하고 앞으로의 개선책을 논의하고자 한다.

• Resources Recycling
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• v.27 no.6
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• pp.76-83
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• 2018

This article aims to summarize the scrap recycling status of gold, silver, platinum and palladium from foreign countries by courntires and industries in order to utilize the data for securing the raw materials of the domestic urbanmining industry. The amount of gold from scrap has shown a tendency to decrease in countries other than China, which is attributed to the large imports of scrap containing gold in China. The industry demand for gold is the highest in electronic products, but demand is decreasing. The amount of scrap recycling in silver has declined in other regions compared to those in Europe, indicating that the world's overall scrap recycling volume has declined. Production and demand from scrap of platinum and palladium are mostly for catalysts and have been steadily increasing until now. However, it is expected that the amount of waste catalysts in automobiles will decrease with the increase of electric vehicle use.