Substance Flow Analysis on Diffused Toxics Contained in End-of-Life Cellular Phone

Nakano, Kazuko; Miyabe, Shuichi; Ozaki, Taira; Wada, Yasuhiko; Nakajima, Kenichi; Nagasaka, Tetsuya

doi:10.2320/jinstmet.71.801

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…The results of KPI-1 are related to [27], where a mobile application was developed for plastic waste recycling in Indonesia. The results showed that the use of factors such as personal attitude, perceived behavioral control, and perceived moral obligation helped to efficiently increase the participation and use of the application, as well as to create greater awareness about the culture of plastic recycling.…”

Section: Discussionmentioning

confidence: 99%

“…They sought to demonstrate that applications according to these metrics preserve the environment and have better performance. In [27], we developed a mobile application for plastic waste recycling in Indonesia, to promote a recycling culture in the Indonesian population. The results showed a significant increase in citizen participation and increased awareness about the plastic recycling culture.…”

Section: Related Workmentioning

confidence: 99%

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Improving Environmental Sustainability: A Geolocation-Based Mobile Application to Optimize the Recycling Process

Iparraguirre-Villanueva,

Tuesta-Pereda,

Tapia-Chavez

et al. 2023

Int. J. Interact. Mob. Technol.

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Environmental pollution caused by human activities is a global concern, and recycling is an effective strategy to reduce waste and minimize its negative impact on the environment, as these pollutants can have detrimental impact on ecosystems, human health, and the quality of life in general. Recycling avoids the accumulation of waste in landfills, which can contaminate soil, water, and air as well as reducing the production of new products. The objective of this work is to implement a mobile application to improve waste management by recycling companies. The Mobile-D methodology was used for the development of the project because it focuses on optimizing the efficiency and performance of mobile applications since it allows working in 5 phases which are: Exploration, Initialization, Production, Stabilization and Testing. In the first indicator (KPI-1), an improvement in customer retention was observed, with an increase of 114.29% in positive responses in the post-test. In the second indicator (KPI-2), there was a 39.92% decrease in response time, indicating a faster response in the collection service. In the third indicator (KPI-3), a significant increase of 86.86% in the volume of waste for recycling was observed. The results showed improvements in all indicators, indicating a positive impact of the implementation of the mobile application on waste management by the companies in the sector.

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Section: Discussionmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Improving Environmental Sustainability: A Geolocation-Based Mobile Application to Optimize the Recycling Process

Iparraguirre-Villanueva,

Tuesta-Pereda,

Tapia-Chavez

et al. 2023

Int. J. Interact. Mob. Technol.

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Elementary analysis of mobile phones for optimizing end-of-life scenarios

Takahashi

Tsuda

Nakamura

et al. 2009

2009 IEEE International Symposium on Sustainable Systems and Technology

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Resource Recovery from Mobile Phone and the Economic and Environmental Impact

Takahashi¹,

Nakamura²,

Otabe³

et al. 2009

J. Japan Inst. Metals

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Mobile phones contain many useful metals, such as gold, silver, copper and tungsten, etc. The contained metals in each mobile phone are relatively little, however, the total number of mobile phones used in Japan has become very large. Therefore, mobile phones are paid attention as a stock in use of various metals. In contrast, these metals have not been well recycled because of low collecting rate of end of life mobile phones. Moreover, the lifecycle of the mobile phone is very short because they have been changed many times for offering new functions, such as cameras, electronic organizers, music players, and televisions. So many materials are considered to be added to obtain these multi functions, and the compositions of materials in mobile phones have changed. In this paper, we collected more than two hundred used mobile phones made between 1996 and 2008 and dismantled them to analyze their metal content. Concentrations of more than 20 metals in mobile phones were measured. It was found that their net amounts of these metals increased year by year. However, the tendency was different for each element. For example, the copper content increases as the number of the functions of a mobile phone was increased. Lead was mostly used as solder and its content decreased. This can be explained with the influence of the environmental regulations. To improve the recycling of mobile phones, the useful data base that including environmental and economic information is essential. Therefore, we also investigated CO 2 emissions and the economic effects of mobile phones based on the results of elemental analyses. CO 2 emissions generated by the incineration of plastics were estimated to be nearly equal to the avoided CO 2 emissions by recovering the metals. The economic impact assessment result showed that the manpower cost exceeds the recovered cost of metals. Therefore it is suggested that the eco-design for recycling is needed.

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Substance Flow Analysis on Diffused Toxics Contained in End-of-Life Cellular Phone

Cited by 4 publications

References 2 publications

Improving Environmental Sustainability: A Geolocation-Based Mobile Application to Optimize the Recycling Process

Improving Environmental Sustainability: A Geolocation-Based Mobile Application to Optimize the Recycling Process

Elementary analysis of mobile phones for optimizing end-of-life scenarios

Resource Recovery from Mobile Phone and the Economic and Environmental Impact

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