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51.
Obtaining the cooperation of citizens to participate in separate waste collection is essential to create a recycling-oriented society. In this research, the degree of change in the citizen participation rate, which occurs when the contents of political measures such as the raising of awareness, provision of information, and the conditions of collection services were changed, was estimated together with the effect on the reduction in environmental load. A questionnaire survey was conducted, targeted at residents of Itabashi Ward, while logistic regression analyses were also conducted to create predictive models for recycling behavior, and sensitivity analyses of the models were carried out to estimate the increase in citizen participation rate achievable through the implementation of various political measures. It was found that the effect of "thorough perception of information" was the largest, followed by "minimization of evaluation of trouble" and "thorough perception of efficacy of measures." The effect of the improvement in the citizen participation rate on the reduction in environmental load was also evaluated quantitatively by life cycle inventory analyses. It was indicated that "maximization of perception of information" had the greatest effect. However, the reduction effect with "paper packs" and "PET bottles" was relatively small compared with that of "bottles/cans." 相似文献
52.
Shin-ichi Sakai Junya Yano Yasuhiro Hirai Misuzu Asari Ritsuki Yanagawa Takeshi Matsuda Hideto Yoshida Tetsuji Yamada Natsuko Kajiwara Go Suzuki Tatsuya Kunisue Shin Takahashi Keijiro Tomoda Joachim Wuttke Paul Mählitz Vera Susanne Rotter Mario Grosso Thomas Fruergaard Astrup Julian Cleary Gil-Jong Oh Lili Liu Jinhui Li Hwong-wen Ma Ngo Kim Chi Stephen Moore 《Journal of Material Cycles and Waste Management》2017,19(4):1295-1313
Although the 2Rs (reduce and reuse) are considered high-priority approaches, there has not been enough quantitative research on effective 2R management. The purpose of this paper is to provide information obtained through the International Workshop in Kyoto, Japan, on 11–13 November 2015, which included invited experts and researchers in several countries who were in charge of 3R policies, and an additional review of 245 previous studies. It was found that, regarding policy development, the decoupling between environmental pressures and economy growth was recognized as an essential step towards a sustainable society. 3R and resource management policies, including waste prevention, will play a crucial role. Approaches using material/substance flow analyses have become sophisticated enough to describe the fate of resources and/or hazardous substances based on human activity and the environment, including the final sink. Life-cycle assessment has also been developed to evaluate waste prevention activities. Regarding target products for waste prevention, food loss is one of the waste fractions with the highest priority because its countermeasures have significant upstream and downstream effects. Persistent organic pollutants and hazardous compounds should also be taken into account in the situation where recycling activities are globally widespread for the promotion of a material-cycling society. 相似文献
53.
Nguyen Thanh Dien Yasuhiro Hirai Shin-ichi Sakai 《Journal of Material Cycles and Waste Management》2017,19(4):1342-1350
We estimated the in-use stocks of polybrominated diphenyl ethers (PBDEs) in Japan using a population balance model. The estimation is based on the domestic demand of PBDEs and the assumed survival rate of these products. Two cases relevant to the future regulation of commercial deca-BDE are considered, namely (1) deca-BDE declines at the same rate as the current rate of decline, and (2) deca-BDE is discontinued after 2020. The estimates of the decreasing rates of in-use penta-, octa-, and deca-BDE stocks were proportional with the measured decreases in the atmospheric concentrations of these substances. The in-use penta- and octa-BDE stocks could be depleted in the near future (500 and 60 tonne in 2013, and an estimated 20 and <1 tonne in 2020, respectively). Relevant to case 1, the in-use stocks of deca-BDE-containing products would be 28,000 tonne in 2013 and an estimated 1900 tonne in 2040, providing an ongoing source of deca-BDE emission to the environment. On the other hand, relevant to case 2, most of the deca-BDE would be phased out by 2040. The atmospheric emissions of deca-BDE were predicted at 84–841 kg/year in 2013 and an estimated 43–425 kg/year in 2020. 相似文献
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Hideaki Maki Kenrou Tokuhiro Yasuhiro Fujiwar Michihiko Ike Kenji Furukaw Masanori Fujita 《环境科学学报(英文版)》1996,8(3):275-284
Biodegradationofsyntheticsurfactantsbyrivermicroorganisms¥HideakiMaki;KenrouTokuhiro;YasuhiroFujiwara;MichihikoIke;KenjiFuruk... 相似文献
57.
Bites inflicted on humans by the slow loris (Nycticebus coucang), a prosimian from Indonesia, are painful and elicit anaphylaxis. Toxins from N. coucang are thought to originate in the brachial organ, a naked, gland-laden area of skin situated on the flexor surface of the arm that is licked during grooming. We isolated a major component of the brachial organ secretions from N. coucang, an approximately 18 kDa protein composed of two 70-90 amino-acid chains linked by one or more disulfide bonds. The N-termini of these peptide chains exhibit nearly 70% sequence similarity (37% identity, chain 1; 54% identity, chain 2) with the two chains of Fel d 1, the major allergen from the domestic cat (Felis catus). The extensive sequence similarity between the brachial organ component of N. coucang and the cat allergen suggests that they exhibit immunogenic cross-reactivity. This work clarifies the chemical nature of the brachial organ exudate and suggests a possible mode of action underlying the noxious effects of slow loris bites. 相似文献
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The draft legislation on e-waste prepared by the Chinese national government assigns management responsibility to local governments. It is an urgent task for the municipal government to plan an effective system as soon as possible to divert the e-waste flow from the existing informal e-waste recycling processes. This paper presents a case study implemented in Beijing, the capital city of China, with the purpose of predicting the amount of obsolete equipment for five main kinds of electronic appliances from urban households and to analyse the flow after the end of their useful phase. The amount to be handled was 885,354 units in 2005 and is predicted to double by 2010. Due to consumption growth and the expansion of urbanization it is estimated that the amount will increase to approximate 2,820,000 units by 2020: 70% of the obsolete appliances will be awaiting collection for possible recycling, 7% will be stored at the owner's home for 1 year on average and 4% will be discarded directly and enter the municipal solid waste collecting system. The remaining items will be reused for about 3 years on average after the change of ownership. The results of this study will assist the waste management authorities of Beijing to plan the collecting system and facilities needed for management of e-waste generated in the near future. 相似文献
60.
Decolorization and estrogenic activity of colored livestock wastewater after electrolysis treatment 总被引:1,自引:0,他引:1
Hotaka Kai Yasuhiro Ishibashi Taiki Mori Hiroshi Ishibashi Isao Kawaguchi Hiroki Ohwaki Takehiro Takemasa Koji Arizono 《Journal of Material Cycles and Waste Management》2010,12(2):128-135
Livestock wastewater is treated by activated sludge treatment. Untreated livestock wastewater has high estrogen activity because
animal excreta contains estrogen. When activated sludge treatment is applied, the estrogen activity declines or is lost. However,
the color of treated livestock wastewater is deep brownish-red because of the decomposition of organic compounds or the synthesis
of metabolites. Discharging colored wastewater to the environment could cause some problems, so it is necessary to decolorize
colored wastewater before it is discharged. It has been suggested that electrolysis decolorization technology is suitable
for treating colored wastewater; however, the process produces volatile organic compounds (VOCs). In fact, little research
has been conducted with reference to estrogen activity in wastewater that has undergone electrolysis, especially on the contribution
of the electrolysis decolorization process to estrogen activity, i.e., the possibility of resynthesis of some substance with
estrogen activity due to resolved and metabolized colored components. In this study, the concentration of VOC was measured
for various electrolysis conditions, and estrogen activity was examined using a yeast two-hybrid assay. From the results,
decolorization of colored livestock wastewater by electrolysis was possible, and the VOC generation during electrolysis could
be controlled depending on the electrolysis conditions. Estrogen activity in colored livestock wastewater disappeared on electrolysis
decolorization. 相似文献