The Relationship between Cleaner Production and Industrial Ecology

Industrial ecology is an emerging concept for the promotion of environmentally sound manufacturing and consumption. It aims to balance industrial development with the sustainable use of natural resources including energy, materials, and the capacity of the environment to assimilate wastes and render valuable services. The widespread adoption of industrial ecology can be furthered by a critical review of current preventive activities in industry. This article reviews the role that current preventive environmental activities-known as cleaner production-could play in the implementation of industrial ecology. The article focuses on whether cleaner production in its present form is sufficient, in terms of breadth of both industrial activities (sources) and environmental concerns (impacts addressed), for achieving industrial ecology's core objectives. It is concluded that current cleaner production practices are not sufficient for achieving the ultimate goals of industrial ecology. Nevertheless, cleaner production practices and methodologies may evolve into useful instruments for the implementation of industrial ecology.     

Waste Costing as a Catalyst in Pollution Prevention Investment Decisions

This article presents a case study in a Nigerian firm of how waste costing can be applied to pollution prevention (P2) investment decisions. This case is informed by the priority accorded to P2 as a preferred alternative to end‐of‐pipe pollution control. It demonstrates that even in the absence of effective regulations in a developing country, cost accounting can spur P2 decisions by management through the system of waste cost allocation. The case used standard cost data from the Wonder Beauty Care Company and applied the activity‐based costing (ABC) system to waste cost allocation using waste cost drivers, which yielded another genre of waste costs—waste‐induced overhead. Subsequently, the waste‐induced overhead was applied to P2 investment analysis. This analysis indicated that the P2 investment alternative that incorporates the waste‐induced overhead produced a preferred alternative choice. The case further revealed that managers’ knowledge of waste costs in a Nigerian firm may influence their P2 decisions. The case illustrates practically a possible dual advantage of an improved costing system for Nigerian firms—cost reduction and cleaner production.     

Quantitative Evaluation of Data Quality in Regional Material Flow Analysis

A method for quantitative evaluation of data quality in regional material flow analysis (MFA) is presented. The principal idea is that data quality is a multidimensional problem that cannot be judged by individual characteristics such as the data source, given that data from official statistics may not be per se of good quality and expert estimations may not be per se of bad quality, respectively. It appears that MFA data are never totally accurate and may have certain defects that impair the quality of the data in more than one dimension. The concept of MFA information defects is introduced, and these information defects are mathematically formalized as functions of data characteristics. They are quantified on a scale from 0 (no information defect) to 1 (maximum information defect). The proposed method is illustrated in a case study on palladium flows in Austria. A quantitative evaluation of data quality provides opportunities for understanding and assessing MFA results, their a priori information basis, their reliability in decision making, and data uncertainties. It is a formal step toward better reproducibility and more transparency in MFA.     

Calculation of the"Net Additions to Stock" Indicator for the Czech Republic Using a Direct Method

Abstract: Net additions to stock (NAS) are an indicator based on economy-wide material flow accounting and analysis. NAS, a measure of the physical growth rate of an economy, can be used for estimates of future waste flows. It is calculated using two methods: The indirect method of calculation is a simple difference between all input and output flows, whereas the direct method involves measuring the amounts of materials added to particular categories of physical stock and the amounts of waste flows from these stocks.
The study described in this article had one leading objective: to make available direct NAS data for the Czech Republic, which could later be used for predicting future waste flows. Two additional objectives emerged from the first: (1) to develop a method for direct NAS calculation from data availability in the Czech Republic; (2) to calculate NAS directly, compare the results with those achieved in indirect NAS calculation, and discuss the identified differences.
The NAS for the Czech Republic calculated by the direct method is equal to approximately 65 million tonnes on average in 2000–2002 and is approximately 27% lower than the NAS acquired by the indirect method of calculation. The actual values of directly calculated NAS and its uncertainties suggest that the indirect NAS is more likely to be an overestimation than an underestimation. Durables account for about 2% of the total direct NAS, whereas the rest is attributed to infrastructure and buildings. The direct NAS is dominated by nonmetal construction commodities such as building stone and bricks, which equal approximately 89% of the total direct NAS.
Calculation of NAS by the direct method has been proved to be feasible in the Czech Republic. Moreover, uncertainties related to direct NAS are lower than those related to indirectly acquired NAS.