Faculty Profiles - FUJIWARA Takeshi

Papers - FUJIWARA Takeshi

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MUNICIPAL WASTE GENERATION AND COMPOSITION IN A TOURIST CITY — HOI AN, VIETNAM Reviewed

Minh Giang HOANG, Takeshi FUJIWARA, Song Toan, PHAM PHU

Journal of JSCE 5 ( 1 ) 123 - 132 2017

Commercial Solid Waste Generation and Composition Practice in A Tourism City - Hoi An, Vietnam Reviewed

S. T. Pham Phu, M. G. Hoang, T. Fujiwara

Global Waste Management 2017 (7th International Conference on Solid Waste Management, 2017) 867 - 875 2017

Waste Separation at Source Practice and Recycling Potential of The Hotel Industry in Hoi An Ancient City, Vietnam

Song Toan Pham Phu, Takeshi Fujiwara, Giang Hang Minh

4th International Conference on Final Sink 101 - 102 2017

Study on Waste Treatment/Energy Recovery Systems Featuring Gas Production by Waste Gasification and Reforming Reviewed

鈴木和将, 藤原健史, 川本克也

季刊全国環境研会誌(Web) 42 ( 3 ) 52 - 60 2017

Concrete waste management decision analysis based on life cycle assessment Reviewed

Chooi Mei Mah, Takeshi Fujiwara, Chin Siong Ho

Chemical Engineering Transactions 56 25 - 30 2017

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Italian Association of Chemical Engineering - AIDIC

Malaysia, a developing country has always had a high level of construction activity. While it means economic growth, the waste generated by the construction industry has always posed a problem. Most of the construction waste is made up of concrete. The inert and non-hazardous concrete waste, suffers from weak enforcement provisions and this further escalates it into large scale landfill dumping and illegal dumping. The consequences of improper waste management are potentially alarming. With the rising concerns of waste management and global carbon concentrations, this study aims to evaluate the potential environmental impacts associated with concrete waste materials and to identify the best alternative in managing the concrete waste. A comprehensive life cycle assessment framework is proposed to assess the environmental impacts associated with the upstream and downstream of concrete waste life cycle
from raw material extraction to material processing, distribution to disposal or recycle. This study analysed the life cycle system in three scenarios: Scenario 1 depicts the cradle-To-grave scenario where concrete waste is sent to landfill without treatment and recycling. Scenario 2 and 3 depict the cradle-To-cradle scenarios in which the concrete waste is cyclically recycled into aggregates and reuse as road base material and reuse in recycled aggregate concrete production. With the compilation of a systematic life cycle inventory of relevant energy, fuel, and process emissions as inputs and released carbon emissions as outputs, this study helps in interpreting the environmental impacts of different waste management into a series of quantitative measures for more informed decision making. A construction project case study is modelled and analysed in the life cycle assessment framework to demonstrate the model's applicability. Results from this study suggest that the recycle of concrete waste into aggregates and reuse in recycled aggregate concrete production have the least GHG impact to the environment at 0.094 tCO2. Recycling of concrete waste for road base material emits 0.095 tCO2 and followed by landfilling at 0.139 tCO2. This model intended to be an analysis and decisionmaking tool while embracing sustainable development stewardship.

DOI： 10.3303/CET1756005

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Construction and demolition waste generation rates for high-rise buildings in Malaysia Reviewed

Chooi Mei Mah, Takeshi Fujiwara, Chin Siong Ho

WASTE MANAGEMENT & RESEARCH 34 ( 12 ) 1224 - 1230 2016.12

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：SAGE PUBLICATIONS LTD

Construction and demolition waste continues to sharply increase in step with the economic growth of less developed countries. Though the construction industry is large, it is composed of small firms with individual waste management practices, often leading to the deleterious environmental outcomes. Quantifying construction and demolition waste generation allows policy makers and stakeholders to understand the true internal and external costs of construction, providing a necessary foundation for waste management planning that may overcome deleterious environmental outcomes and may be both economically and environmentally optimal. This study offers a theoretical method for estimating the construction and demolition project waste generation rate by utilising available data, including waste disposal truck size and number, and waste volume and composition. This method is proposed as a less burdensome and more broadly applicable alternative, in contrast to waste estimation by on-site hand sorting and weighing. The developed method is applied to 11 projects across Malaysia as the case study. This study quantifies waste generation rate and illustrates the construction method in influencing the waste generation rate, estimating that the conventional construction method has a waste generation rate of 9.88 t 100 m(-2), the mixed-construction method has a waste generation rate of 3.29 t 100 m(-2), and demolition projects have a waste generation rate of 104.28 t 100 m(-2).

DOI： 10.1177/0734242X16666944

A systematic approach to projecting industrial solid waste generation by industrial sector in Shanghai Reviewed

Jinmei Yang, Takeshi Fujiwara, Yuzuru Matsuoka, Wei Wang

JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT 18 ( 1 ) 81 - 92 2016.1

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：SPRINGER

The increasing volumes of industrial solid wastes (ISW) generated have become a serious issue in Shanghai, China. Knowing the volume of ISW that is to be generated in the future is considered a prerequisite for an effective reduction policy and the successful design of treatment facilities. It has been verified that the prediction of ISW generation has an inherent relationship with industrial restructuring caused by economic growth. This study contributes its efforts to develop a systematic approach involving a regional input-output analysis for the forecasting of ISW generation, taking into account the probable industrial restructuring developments. In the process, changes in the consumption patterns, export structure, and technical change are considered to be the important drivers. Further, a sensitivity analysis is carried out as well to investigate the influence of change in consumption on ISW generation. The case study of Shanghai provides for a feasible application of our model on a regional level until the year 2020.

DOI： 10.1007/s10163-014-0330-2

Web of Science

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Feasibility Study on Effectiveness of Solid Waste Incineration in Hoi An, Vietnam

Hoang Minh Giang, Fujiwara Takeshi

1 - 4 2016

A Life cycle assessment framework for evaluatin of construction and demolition waste management practices

Chooi Mei Mah, Takeshi Fujiwara, Chin Siong Ho

Asian-Pacific Landfill Symposium - Integrated Waste Management and Sustainable Landfilling (APLAS 2016) 1 - 7 2016

Municipal Solid Waste Characterization and Waste Management Issues in a Tourist City - Hoi An, Vietnam

Hoang Minh Giang, Fujiwara Takeshi, Pham Phu Song Toan

Asian-Pacific Landfill Symposium - Integrated Waste Management and Sustainable Landfilling (APLAS 2016) 1 - 10 2016

Management of landfill reclamation with regard to biodiversity preservation, global warming mitigation and landfill mining: experiences from the Asia-Pacific region

Yu-Chi Weng, Takeshi Fujiwara, Harvey J. Houng, Chia-Hui Sun, Wen-Ying Li, Ya-Wen Kuo

JOURNAL OF CLEANER PRODUCTION 104 364 - 373 2015.10

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCI LTD

As a comparatively low-cost technology for waste treatment and disposal, landfilling has been adopted worldwide, particularly in developing countries. After one landfill is fully filled, the aftercare management turns into an important issue for municipalities, while the deposited waste is highly complex and condensed. Recent literature has indicated that landfill management plays an important role on critical issues of contemporary solid waste management, including biodiversity preservation, global warming mitigation, landfill mining and land reclamation. This study firstly made a comprehensive literature review on the existing studies in several Asia-Pacific economies, secondly conducted field surveys for the several illustrations of the aftercare management of closed landfills in Japan and Taiwan. Afterward, the findings from the literature and illustrations from the Asia-Pacific region were qualitatively summarized. Based on the results, concrete management strategies were discussed for the aftercare management of closed landfills in the context of land reclamation from important perspectives. For promoting the closed landfill management and seeking for adequate reclamation methods, the ex-post monitoring, impact assessments, and the essential cost-benefit analysis should be implemented with regard to respective reclamation type and local conditions. Using the outcomes of this study, municipalities can formulate concrete strategies to mitigate the risks and negative impacts, and to increase the benefits of landfills from a life-cycle perspective, considering the multi-stakeholders. (C) 2015 Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.jclepro.2015.05.014

Web of Science

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Municipal solid waste characterization and recycling potentials in Phnom Penh city, Cambodia

Bandith Seng, Takeshi Fujiwara

The 2nd 3R International Scientific Conference on Material Cycle and Waste Management 1 - 4 2015

A Survey of Construction and Demolition Waste in Malaysia Mixed-Use Development

Chooi Mei Mah, Takeshi Fujiwara, Chin Shing Ho

ISWA Beacon 3rd International Conference on Final Sinks 54 - 55 2015

Recycling of plastic packaging waste in Bandung City, Indonesia Reviewed

Mochammad Chaerul, Ahmad Reza Fahruroji, Takeshi Fujiwara

JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT 16 ( 3 ) 509 - 518 2014.7

Language：English Publishing type：Research paper (scientific journal) Publisher：SPRINGER

Economic growth, changing consumption and production patterns are resulting in rapid increase in the generation of plastic wastes, including plastic packaging waste (PPW). A variety of PPW is identified in the municipal solid waste (MSW) stream. In this paper, quantity and composition of PPW at generators (residential and nonresidential sectors) and at the informal sector of waste recycling were measured, and accordingly the flow of PPW within Bandung City, Indonesia was analyzed. Though the generation rate per capita is not so high (25.1 g per day), total PPW generated by 2.3 million inhabitants in Bandung becomes 58.4 tonnes per day (3.76 % of total MSW generated). Due to lack of integrated MSW management, most of PPW is neither collected properly nor disposed of in appropriate manner by the municipality. Collection of valuable wastes including PPW is done predominantly by the informal sector without regard to health and safety. It is predicted that total PPW recycled by various informal waste recycling players like scavengers, junkmen, intermediates, and dealers is 27.5 tonnes per day (64.6 % of total PPW generated). Interviews regarding the existing handling methods and incentives preferred by generators to increase the recycling rate are also presented.

DOI： 10.1007/s10163-013-0201-2

Web of Science

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Transforming Municipal Waste into a Valuable Soil Conditioner through Knowledge-Based Resource-Recovery Management Reviewed

Golabi MH, Kirk Johnson, Takeshi Fujiwara, Eri Ito

International Journal of Waste Resources 87 - 100 2014

Prospect of Household Solid Waste Management Improvement based on Low Carbon Society Survey in Iskandar Malaysia

Takeshi Fujiwara, Siti Norbaizura, Md. Rejab, ho Chin Siong, Zainura Zainon Noor

The 3R International Scientific Conference on Material Cycles and Waste Management (3RINCS) and 13th Expert Meeting on Solid Waste Management in Asia and Pacific Island (SWAPI) 1 - 4 2014

A study on system optimization of solid waste management in Johor Bahru, Malaysia

Takeshi Fujiwara, Yasuhito Yoneda

The 8th Asian-Pacific Landfill Symposium (APLAS) in Hanoi 1 - 7 2014

A Study of Commercial Solid Waste Generation and Composition in Phnom Penh City, CAMBODIA Reviewed

YIM Mongtoeun, Takeshi FUJIWARA, SOUR Sethy

Journal of Natural Science Research 4 ( 13 ) 49 - 54 2014

Estimation of Tsunami Disaster Waste Amount and Location Planning of Temporal Stockyard by Map Information Reviewed

藤原健史, 中村彰太

EICA 17 ( 4 ) 2013

Sustainable Waste Management for Low-carbon Society Iskandar Malaysia 2025 Reviewed

Takeshi Fujiwara, Sit Nor Baizura

8th International Symposium on Digital Earth 1 - 7 2013

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Papers - FUJIWARA Takeshi