Assessing computer waste generation in Chile using material flow analysis

2010 ◽  
Vol 30 (3) ◽  
pp. 473-482 ◽  
Author(s):  
Bernhard Steubing ◽  
Heinz Böni ◽  
Mathias Schluep ◽  
Uca Silva ◽  
Christian Ludwig
Keyword(s):  
Material Flow ◽  
Flow Analysis ◽  
Material Flow Analysis ◽  
Waste Generation

Data uncertainties in material flow analysis: Municipal solid waste management system in Maputo City, Mozambique

2016 ◽  
Vol 35 (1) ◽  
pp. 120-125 ◽  
Author(s):  
Leticia Sarmento dos Muchangos ◽  
Akihiro Tokai ◽  
Atsuko Hanashima
Keyword(s):  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Material Flow ◽  
Solid Waste Management ◽  
Flow Analysis ◽  
Material Flow Analysis ◽  
Municipal Solid Waste Management ◽  
Waste Generation ◽  
Maputo City

Material flow analysis can effectively trace and quantify the flows and stocks of materials such as solid wastes in urban environments. However, the integrity of material flow analysis results is compromised by data uncertainties, an occurrence that is particularly acute in low-and-middle-income study contexts. This article investigates the uncertainties in the input data and their effects in a material flow analysis study of municipal solid waste management in Maputo City, the capital of Mozambique. The analysis is based on data collected in 2007 and 2014. Initially, the uncertainties and their ranges were identified by the data classification model of Hedbrant and Sörme, followed by the application of sensitivity analysis. The average lower and upper bounds were 29% and 71%, respectively, in 2007, increasing to 41% and 96%, respectively, in 2014. This indicates higher data quality in 2007 than in 2014. Results also show that not only data are partially missing from the established flows such as waste generation to final disposal, but also that they are limited and inconsistent in emerging flows and processes such as waste generation to material recovery (hence the wider variation in the 2014 parameters). The sensitivity analysis further clarified the most influencing parameter and the degree of influence of each parameter on the waste flows and the interrelations among the parameters. The findings highlight the need for an integrated municipal solid waste management approach to avoid transferring or worsening the negative impacts among the parameters and flows.

scholarly journals Penilaian aliran limbah elektronika di DKI Jakarta menggunakan Material Flow Analysis (MFA)

2019 ◽  
Vol 17 (1) ◽  
pp. 120
Author(s):  
Dino Rimantho ◽  
Erliza Noor ◽  
Eriyatno Eriyatno ◽  
Hefni Effendi
Keyword(s):  
Material Flow ◽  
Negative Impact ◽  
Flow Analysis ◽  
Material Flow Analysis ◽  
Electronic Equipment ◽  
Waste Generation ◽  
Electronic Products ◽  
Human Needs ◽  
Data Limitations ◽  
Almost All

Electronic equipment is produced to meet human needs, so this will also have a significant impact on increasing the rate of e-waste generation in landfills in almost all countries. One of the environmental pollution issues that are of concern throughout the world is the management of e-waste (e-waste). This is due to the rapid increase in the use of electronic products. Thus, the existence of electrical and electronic equipment becomes shorter and becomes obsolete. The absence of information related to the volume of e-waste generation and material flow is one of the problems of the Indonesian government in managing e-waste. Therefore, the purpose of this paper is to calculate e-waste and analyze material flow. The method used in this study is Material Flow Analysis (MFA). Furthermore, a survey of household and informal sector respondents was used. The questionnaire adopted from UNEP was modified and distributed to 400 households and 54 informal sectors in DKI Jakarta. The results show the total rate of generation of e-waste produced aaproximately 7713.42013 kg/year. Furthermore, it is necessary to develop several strategies in order to avoid negative impact. This research can be information in filling the data limitations and management of sustainable e-waste in DKI Jakarta.

Identification of industrial hazardous waste and material flow analysis based on hazardous waste producing businesses in Indonesia

2021 ◽  
Author(s):  
I Made Wahyu Widyarsana ◽  
Aurilia Ayuanda Mulyadi ◽  
Suci Ameliya Tambunan
Keyword(s):  
Waste Management ◽  
Hazardous Waste ◽  
Material Flow ◽  
Flow Analysis ◽  
Material Flow Analysis ◽  
Industrial Sector ◽  
Waste Generation ◽  
Average Growth ◽  
Hazardous Waste Management ◽  
Industrial Sectors

Abstract This research was conducted to (1) determine the hazardous waste generation from the industrial sector in Indonesia in 2019, (2) predict the hazardous waste generation in 2040, and (3) determine the waste material flow. This study's secondary data comes from past studies related to hazardous waste management in Indonesia's industrial sector. In this study, predicting hazardous waste generation used 2 (two) methods: the Annual Average Growth Rate and the Unit Gross Industrial Output Value. The last method used the assumption that Micro and Small Enterprises (MSEs) generate 10% of the total hazardous waste in Indonesia's industrial sector, while the Medium and Large Enterprises (MLEs) generate 85% of the total hazardous waste. In 2019, the total hazardous waste generation reached 573,351,835.37 tonnes yr-1. The hazardous waste projection from Indonesia's industrial sectors in 2040 reached 1,066,603,307.02 tonnes yr-1 to 1,298,591,111.95 tonnes yr-1. Based on the Material Flow Analysis, 68.66% of the hazardous waste was managed by disposing 11% of the hazardous waste in landfill, utilizing 31.44% of the waste, while 31.37% of the hazardous waste goes to hazardous waste transfer depots, and only 1.24% of the hazardous waste was processed. Meanwhile, 31.34% of the hazardous waste is considered to be unmanaged and pollute the land. Thus, it is necessary to have a reliable and integrated hazardous waste management system to reduce the negative impacts on the environment and human health.

scholarly journals Waste material flow analysis in the Łódź Metropolitan Area

2020 ◽  
Vol 27 (2) ◽  
pp. 95-114
Author(s):  
Konrad Czapiewski ◽  
Damian Mazurek ◽  
Anna Traczyk ◽  
Marcin Wójcik
Keyword(s):  
Metropolitan Area ◽  
Material Flow ◽  
Urban Areas ◽  
Flow Analysis ◽  
Liquid Waste ◽  
Material Flow Analysis ◽  
Public Utilities ◽  
Municipal Services ◽  
Waste Generation ◽  
Horizon 2020

The main sources of waste generation are: industry, municipal sector, and agriculture. Municipal waste is solid and liquid waste that arise in households, public utilities (trade, services, handicrafts) and municipal services (e.g. street cleaning and maintenance of green areas). The main aim of this paper are the analysis of the flow of municipal solid waste in Łódź Metropolitan Area, its composition, presentation of the process towards a more selective waste system, and the extraction of biodegradable waste from the MSW. The article is based on a report prepared within the Horizon 2020 project REPAiR “Resource Management in Peri-urban Areas: Going Beyond Urban Metabolism”.

scholarly journals Life Cycle Assessment and Material Flow Analysis: Two Under-Utilized Tools for Informing E-Waste Management

2021 ◽  
Vol 13 (14) ◽  
pp. 7939
Author(s):  
Sohani Vihanga Withanage ◽  
Komal Habib
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Material Flow ◽  
Keyword Search ◽  
Technological Development ◽  
Flow Analysis ◽  
Material Flow Analysis ◽  
Civil Society Organizations ◽  
The Past ◽  
Depth Analysis

The unprecedented technological development and economic growth over the past two decades has resulted in streams of rapidly growing electronic waste (e-waste) around the world. As the potential source of secondary raw materials including precious and critical materials, e-waste has recently gained significant attention across the board, ranging from governments and industry, to academia and civil society organizations. This paper aims to provide a comprehensive review of the last decade of e-waste literature followed by an in-depth analysis of the application of material flow analysis (MFA) and life cycle assessment (LCA), i.e., two less commonly used strategic tools to guide the relevant stakeholders in efficient management of e-waste. Through a keyword search on two main online search databases, Scopus and Web of Science, 1835 peer-reviewed publications were selected and subjected to a bibliographic network analysis to identify and visualize major research themes across the selected literature. The selected 1835 studies were classified into ten different categories based on research area, such as environmental and human health impacts, recycling and recovery technologies, associated social aspects, etc. With this selected literature in mind, the review process revealed the two least explored research areas over the past decade: MFA and LCA with 33 and 31 studies, respectively. A further in-depth analysis was conducted for these two areas regarding their application to various systems with numerous scopes and different stages of e-waste life cycle. The study provides a detailed discussion regarding their applicability, and highlights challenges and opportunities for further research.

Dynamic material flow analysis of natural graphite in China for 2001-2018

2021 ◽  
Vol 173 ◽  
pp. 105732
Author(s):  
Xue Rui ◽  
Yong Geng ◽  
Xin Sun ◽  
Han Hao ◽  
Shijiang Xiao
Keyword(s):  
Material Flow ◽  
Flow Analysis ◽  
Material Flow Analysis ◽  
Natural Graphite

Dynamics of Regional Recycling Economy Development Based on Material Flow Analysis: A Case Study in Shandong Province

2011 ◽  
Vol 347-353 ◽  
pp. 2961-2966
Author(s):  
Dian Ming Geng ◽  
Jia Xiang Liu
Keyword(s):  
Water Supply ◽  
Circular Economy ◽  
Material Flow ◽  
Flow Analysis ◽  
Material Flow Analysis ◽  
Shandong Province ◽  
Utilization Efficiency ◽  
Recycling Economy ◽  
Material Input ◽  
Inputs And Outputs

In order to study the development of regional recycling economy, the material inputs and outputs of the eco-economic system in Shandong Province during the period from 1996 to 2009 were systematically analyzed by the material flow analysis(MFA). The results show that, (1)excluding water, material inputs and outputs rose persistently, but both were lower than the rate of GDP growth. (2)Water supply had a turning point in 2003, from 25.239 billion tons down to 21.934 billion tons, followed by the total annual water supply has been maintained at 220 million tons. At the same time the amount of wastewater emissions is increasing, especially domestic wastewater emissions had faster growth and that increased pressure on the regional water environment;(3) Steady increase in material input intensity, material output intensity presented a first increased and then decreased trend, that showed since Shandong Province proposed the strategic planning to develop circular economy, the development of regional circular economy have improved the material utilization efficiency and made a material reduction in output in the case of material input growth achieved. The rapid increase of material input and output efficiency further illustrated the efficiency of resource comprehensive utilization and waste output have been significantly improved.

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