Material Flow Modeling Articles & Analysis
14 articles found
The water budget of the Bangkok Metropolis system was analyzed using a material flow analysis model. Total imported flows into the system were 80,080 million m3 per year (Mm3 y–1) including inflows from the Chao Phraya and Mae Klong rivers and rainwater. Total exported flows out of the system were 78,528 Mm3 ...
However, this ‘arms-length’ approach to ‘for end-of-life’ has failed to create a circular flow of recycled materials back into new products. The disconnect between the return flow of materials – take-back, collection and recycling - and the design, procurement and sales of new durable products can be ...
The study aimed at estimating agricultural nutrient cycles and their contribution to the water environment. A material flow model of nitrogen (N) and phosphorus (P) was developed focusing on agricultural activities from 1980 to 2010 in Trai hamlet, an agricultural watershed in Nhue-Day River basin, Vietnam. The model focused on ...
The study aimed at estimating agricultural nutrient cycles and their contribution to the water environment. A material flow model of nitrogen (N) and phosphorus (P) was developed focusing on agricultural activities from 1980 to 2010 in Trai hamlet, an agricultural watershed in Nhue-Day River basin, Vietnam. The model focused on ...
This contribution investigates the relationships between diet and agricultural production, the resulting mass flows of nitrogen and phosphorus, their impact on the aquatic environment, the agricultural area requirements and emissions of nitrogen to the atmosphere in a clearly defined region. The combination of material flow analysis, nutrient ...
A CFD approach, in which the full equations are solved in the time domain, is proposed to calculate noise reduction of a cleaner and a complex exhaust muffler without mean flow. First, two modelling approaches are used to deal with the outlet boundary and to calculate noise reduction of the cleaner without a filter element. ...
Griffin Stainless Steel Hydraulic Submersible Pumps, which have the ability to withstand corrosive environments, are available in trash, axial flow, and and material handling models. The pumps range from 4” to 24”. ...
It aims to identify the most promising mixes of policy instruments for SC and to use Material Flow Analysis (MFA) to model prospective impacts of policies on selected sustainability indicators in Europe and internationally, and to determine best practices of such policies for the next decades.Keywords: sustainable consumption, MFA, ...
Recent decades of economic and industrial development have accelerated the demand for and use of construction aggregates in Taiwan. Material Flows Analysis (MFA), the most common analysis tool of the scientific field of industrial ecology, was employed in this study. ...
Comprehending how humans let toxic cadmium (Cd) loose in their environment demands analysing zinc (Zn) production, the source of most mined Cd. Analysis of unaccounted Cd with the ImPACT identity as a product of population, affluence, intensity of Zn use, and the used fraction of Cd in Zn ore shows that the used fraction exerted the most leverage. A simulation of emission from Zn mining and ...
One area is the "problem" of evolution and its inclusion in definitions and modelling. Although the importance of evolution is stressed it is often confused with the optimisation of energy and material flows. After reviewing issues of generalised models of IE, problems of three, often-cited industrial ecosystems of Kalundborg, ...
Various types of economic model address environmental problems. This article examines whether these can be applied to the analysis of material flows. It is important to know which types of model are most suitable to deal with particular economic, environmental or physical aspects of material ...
Therefore, the study is based on the development and application of an energy and material flow model for Baden-Wurttemberg with the help of which future developments in different sectors (e.g. energy supply, households, industry) are analysed. Different assumptions with respect to the economic and political framework are considered. The ...
In a first step, an optimising energy and material flow model is used to elaborate emission reduction strategies for Germany. The same methodology is then applied to Indonesia in order to determine the emission baseline for this country, which is an indispensable requirement for the evaluation of project-based flexible instruments. Then, ...