Pollution prevention with chemical process simulators: the generalized waste reduction (WAR) algorithm—full version

Cabezas, Heriberto; Bare, Jane; Mallick, Santanu

doi:10.1016/s0098-1354(98)00298-1

Cited by 199 publications

(116 citation statements)

References 6 publications

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“…This environmental impact assessment tool was developed in response to the need for rapid assessments of environmental impacts during the conceptual and design stages of manufacturing processes [46]. The WAR algorithm enables the determination of the conceptual PEI of a process via an approach analogous to the classic mass or energy balances, since the theoretical PEI of an a chemical process is assumed to be conserved.…”

Section: Potential Environmental Impact Assessmentmentioning

confidence: 99%

Catalyst-Free Biodiesel Production Methods: A Comparative Technical and Environmental Evaluation

2018

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Abstract:In response to existing global focus on improved biodiesel production methods via highly efficient catalyst-free high temperature and high pressure technologies, this study considered the comparative study of catalyst-free technologies for biodiesel production as an important research area. In this study, therefore, catalyst-free integrated subcritical lipid hydrolysis and supercritical esterification and catalyst-free one step supercritical transesterification processes for biodiesel production have been evaluated via undertaking straight forward comparative energetic and environmental assessments. Energetic comparisons were undertaken after heat integration was performed since energy reduction has favourable effects on the environmental performance of chemical processes. The study confirmed that both processes are capable of producing biodiesel of high purity with catalyst-free integrated subcritical lipid hydrolysis and supercritical esterification characterised by a greater energy cost than catalyst-free one step supercritical transesterification processes for an equivalent biodiesel productivity potential. It was demonstrated that a one-step supercritical transesterification for biodiesel production presents an energetically more favourable catalyst-free biodiesel production pathway compared to the integrated subcritical lipid hydrolysis and supercritical esterification biodiesel production process. The one-step supercritical transesterification for biodiesel production was also shown to present an improved environmental performance compared to the integrated subcritical lipid hydrolysis and supercritical esterification biodiesel production process. This is because of the higher potential environment impact calculated for the integrated subcritical lipid hydrolysis and supercritical esterification compared to the potential environment impact calculated for the supercritical transesterification process, when all material and energy flows are considered. Finally the major contributors to the environmental outcomes of both processes were also clearly elucidated.

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Section: Potential Environmental Impact Assessmentmentioning

confidence: 99%

Catalyst-Free Biodiesel Production Methods: A Comparative Technical and Environmental Evaluation

2018

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“…The environmental performance index (EPI1) is calculated by combining total PEI based on WAR algorithm [16,17], resource depletion, energy conservation and fugitive emission rates while environmental pollution index (EPI2) is calculated by combining total PEI based on WAR algorithm and fugitive emissions because in this case other factors like resource depletion and energy consumption will be integrated in economic module or objective function. The Analytic hierarchy process (AHP) is used as multicriteria decision analysis tool for combining these different impacts and determination of weighting factors of individual impact categories in total PEI and later on in environmental performance index (EPI1) and environmental pollution index (EPI2) calculations.…”

Section: Environment Modulementioning

confidence: 99%

Systematic Framework for Multiobjective Optimization in Chemical Process Plant Design

Ramzan¹,

Nawaz²,

Witt³

et al. 2012

Advances in Chemical Engineering

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“…The aim of LCA is to consider the wide chain in order to prevent pollution generation and to compare the different alternatives to produce a product. Another concept used the Pollution Balance (PB) principle to carry out a pollution balance (Cabezas et al, 1999) equivalent to the balance made for mass or energy. It means that a process can not only pollute but also consume a polluting product and will be a benign process.…”

Section: Environmental Impact Evaluationmentioning

confidence: 99%

Ecodesign of Batch Processes: Optimal Design Strategies for Economic and Ecological Bioprocesses

Dietz¹,

Pantel²,

Pibouleau³

et al. 2007

International Journal of Chemical Reactor Engineering

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This work deals with the multicriteria cost-environment design of multiproduct batch plants, where the design variables are the equipment item sizes as well as the operating conditions. The case study is a multiproduct batch plant for the production of four recombinant proteins. Given the important combinatorial aspect of the problem, the approach used consists in coupling a stochastic algorithm, indeed a Genetic Algorithm (GA) with a Discrete Event Simulator (DES). To take into account the conflicting situations that may be encountered at the earliest stage of batch plant design, i.e. compromise situations between cost and environmental consideration, a Multicriteria Genetic Algorithm (MUGA) was developed with a Pareto optimal ranking method. The results show how the methodology can be used to find a range of trade-off solutions for optimizing batch plant design.

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Pollution prevention with chemical process simulators: the generalized waste reduction (WAR) algorithm—full version

Cited by 199 publications

References 6 publications

Catalyst-Free Biodiesel Production Methods: A Comparative Technical and Environmental Evaluation

Catalyst-Free Biodiesel Production Methods: A Comparative Technical and Environmental Evaluation

Systematic Framework for Multiobjective Optimization in Chemical Process Plant Design

Ecodesign of Batch Processes: Optimal Design Strategies for Economic and Ecological Bioprocesses

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