排序方式: 共有2条查询结果,搜索用时 15 毫秒
1
1.
Current status and research on E-waste issues in Asia 总被引:2,自引:1,他引:2
Atsushi Terazono Shinsuke Murakami Naoya Abe Bulent Inanc Yuichi Moriguchi Shin-ichi Sakai Michikazu Kojima Aya Yoshida Jinhui Li Jianxin Yang Ming H. Wong Amit Jain In-Suk Kim Genandrialine L. Peralta Chun-Chao Lin Thumrongrut Mungcharoen Eric Williams 《Journal of Material Cycles and Waste Management》2006,8(1):1-12
Rapid economic growth in Asia and the increasing transboundary movement of secondary resources will increasingly require both
3R endeavors (reduce, reuse, recycle) in each country and appropriate control of international material cycles. Recently,
managing electrical and electronic waste (E-waste) has become an important target for domestic and international material
cycles from the viewpoints of environmental preservation and resource utilization efficiency. To understand the current status
of E-waste issues in the context of international material cycles and to discuss the future tasks related to achieving 3R
in the region, we organized the National Institute for Environmental Studies (NIES) E-waste Workshop in December 2004. This
article reviews past studies on E-waste and briefly describes the topics presented and discussions held at the workshop. The
topics at the workshop included E-waste generation, recycling systems, international trade, and environmental impacts. In
addition, we discussed various issues such as terminology, current environmental concerns, and possible solutions. Transboundary
shipments of E-waste should be conducted taking into consideration the concept of sustainable development. The direction of
future research and possible collaborations are also discussed. 相似文献
2.
Leejarkpai T Suwanmanee U Rudeekit Y Mungcharoen T 《Waste management (New York, N.Y.)》2011,31(6):1153-1161
This study models and evaluates the kinetics of C-CO2 evolution during biodegradation of plastic materials including Polyethylene (PE), PE/starch blend (PE/starch), microcrystalline cellulose (MCE), and Polylactic acid (PLA). The aerobic biodegradation under controlled composting conditions was monitorated according to ISO 14855-1, 2004. The kinetics model was based on first order reaction in series with a flat lag phase. A non-linear regression technique was used to analyze the experimental data. SEM studies of the morphology of the samples before and after biodegradation testing were used to confirm the biodegradability of plastics and the accuracy of the model. The work showed that MCE and PLA produced the high amounts of C-CO2 evolution, which gave readily hydrolysable carbon values of 55.49% and 40.17%, respectively with readily hydrolysis rates of 0.338 day−1 and 0.025 day−1, respectively. Whereas, a lower amount of C-CO2 evolution was found in PE/starch, which had a high concentration of moderately hydrolysable carbon of 97.74% and a moderate hydrolysis rate of 0.00098 day−1. The mineralization rate of PLA was 0.500 day−1 as a lag phase was observed at the beginning of the biodegradability test. No lag phase was observed in the biodegradability testing of the PE/starch and MCE. The mineralization rates of the PE/starch and MCE were found to be 1.000 day−1, and 1.234 day−1, respectively. No C-CO2 evolution was observed during biodegradability testing of PE, which was used for reference as a non-biodegradable plastics sample. 相似文献
1