Use of Cascaded Option Trees in Chemical‐Engineering Process Development

Bednarz, Andreas; Rüngeler, Bettina; Pfennig, Andreas

doi:10.1002/cite.201300115

Cited by 8 publications

(6 citation statements)

References 17 publications

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“…The goal is to sketch up and qualitatively describe a potential industrial process chain, based on similar but well‐known processes (Bednarz et al ). This procedure is iterative, gathering information from the lab‐scale processes and similar industrial processes, as well (see Figure ).…”

Section: Methodsmentioning

confidence: 99%

“…Walczak et al () describe a 6‐step procedure for scaling in LCA and take into consideration the potential uncertainty caused by different technology readiness levels (TRLs). Another alternative is the cascaded option tree model reported by Bednarz et al (), which does not deal directly with LCA but offers a methodology to support the selection of optimal alternatives for large‐scale production. It shows the potential to simplify complex process‐scaling in LCA.…”

Section: Introductionmentioning

confidence: 99%

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Proposal of a framework for scale-up life cycle inventory: A case of nanofibers for lithium iron phosphate cathode applications

Simon

Bachtin

Kılıç

et al. 2016

Integr Environ Assess Manag

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Environmental assessments are crucial for the management of the environmental impacts of a product in a rapidly developing world. The design phase creates opportunities for acting on the environmental issues of products using life cycle assessment (LCA). However, the LCA is hampered by a lack of information originating from distinct scales along the product or technology value chain. Many studies have been undertaken to handle similar problems, but these studies are case-specific and do not analyze the development options in the initial design phase. Thus, systematic studies are needed to determine the possible scaling. Knowledge from such screening studies would open the door for developing new methods that can tackle a given scaling problem. The present article proposes a scale-up procedure that aims to generate a new life cycle inventory (LCI) on a theoretical industrial scale, based on information from laboratory experiments. Three techniques are described to obtain the new LCI. Investigation of a laboratory-scale procedure is discussed to find similar industrial processes as a benchmark for describing a theoretical large-scale production process. Furthermore, LCA was performed on a model system of nanofiber electrospinning for Li-ion battery cathode applications. The LCA results support material developers in identifying promising development pathways. For example, the present study pointed out the significant impacts of dimethylformamide on suspension preparation and the power requirements of distinct electrospinning subprocesses. Nanofiber-containing battery cells had greater environmental impacts than did the reference cell, although they had better electrochemical performance, such as better wettability of the electrode, improving the electrode's electrosorption capacity, and longer expected lifetime. Furthermore, material and energy recovery throughout the production chain could decrease the environmental impacts by 40% to 70%, making the nanofiber a promising battery cathode. Integr Environ Assess Manag 2016;12:465-477. © 2016 SETAC.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Proposal of a framework for scale-up life cycle inventory: A case of nanofibers for lithium iron phosphate cathode applications

Simon

Bachtin

Kılıç

et al. 2016

Integr Environ Assess Manag

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“…The Cascaded Option Tree (COT) method is used to generate a simple and comprehensible evaluation of the alternatives for P recovery, which was introduced by Bednarz et al [21]. This method is used for evaluating the different process alternatives based on some chosen relevant criteria.…”

Section: Cascaded Option Tree For Criteria Evaluationmentioning

confidence: 99%

Phosphorus in waste sources in Southern Vietnam: potential for recovery

Dinh

Hung

Pfennig

2023

Sustain Environ Res

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The potential for phosphorus (P) recovery from various sources in Southern Vietnam has been assessed in this study. Five types of waste were studied, namely sediment from catfish pond, manure from cattle and pig farming, and also sludge from domestic and rubber-latex processing wastewater-treatment plants. The study identifies P-reserve and assesses factors related to P recovery from waste sources such as distribution, collection, transportation conditions, and composition of wastes. P-reserve from catfish farming is estimated about 17.7 kt yr-1 while reserve from pig farming is the highest, about 21.7 kt yr-1. Total P-reserves from studied wastes are estimated about 50 kt yr-1, equivalent to 37% of Vietnam’s imported nutrient P quantity in 2019. Generated sludge from rubber-latex processing wastewater-treatment plants has the highest potential and favorable properties for P recovery. It turns out to be feasible to collect and recover P from this waste source under Vietnam’s current conditions.

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“…The cascaded option-tree methodology had been proposed previously to support design of new processes based on experience in cooperation projects with industry [1]. As starting point for an options tree for a specific separation-process design task, the options for that separation process on a coarse level of detail are collected as well as the basic criteria that have to be fulfilled.…”

Section: Cascaded Option Treesmentioning

confidence: 99%