Axel Tuma
Biographic Data
| ID | 2511479 |
|---|---|
| NAME | Axel Tuma |
| GIVEN NAMES | Axel |
| FAMILY NAME | Tuma |
| SIGNATURE | TUMA A |
| AFFILIATIONS | University of Augsburg |
| ORCID | 0000-0002-5532-9837 |
| VERIFIED | Yes |
| TOTAL WORKS | 12 |
| TOTAL CITATIONS | 2 |
| AUTHOR COUNT | 12 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2017 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 1 |
Life cycle sustainability assessment of substituting fossil based with biogenic materials
Bioeconomy is often cited as one pathway toward sustainable materials and a circular economy in an urban–rural context. This study conducts a life cycle sustainability assessment (LCSA)—life cycle assessment, social life cycle assessment, and life cycle costing (LCC)—to assess the benefits and impacts of substituting fossil polymer‐based products with biogenic alternatives through two product systems: drinking cups and insulation boxes. In detail…
Encounter the unforeseen
Bioeconomic supply chains (BioSC) processing biogenic resources and substituting fossil‐based products are prone to weather‐induced feedstock supply disruptions, which likely increase in severity and frequency due to climate change. To attain supply security of biobased products that contribute to sustainable development, BioSCs should be equipped with a certain level of “resilience” against unexpected feedstock fluctuations. Existing BioSC model…
Assessing the social dimension in strategic network optimization for a sustainable development
The complexity of social indicators and their subjective and often qualitative nature render their inclusion into quantitative optimization models for network design and strategic decision-making challenging. The social dimension is thus often implemented only rudimentarily, thwarting a holistic sustainability assessment and neglecting many of the social issues addressed in the sustainable development goals (SDGs). This work presents a structured…
Island and Indigenous systems of circularity
Given the dire consequences of the present global climate crisis, the need for alternative ecologically based economic models could not be more urgent. The economic and environmental concerns of the circular economy are well-developed in the literature. However, there remains a gap in research concerning the circular economy’s impact on culture and social equity. The underdeveloped social and cultural pillars of the circular economy, along with u…
A terminology for downcycling
The term downcycling is often used anecdotally to describe imperfections in recycling. However, it is rarely defined. Here, we identify six meanings of the term downcycling as used in scientific articles and reports. These encompass the material quality of reprocessed materials, target applications, product value, alloying element losses, material systems, and additional primary production. In a proposal for harmonized and more specific terminolo…
Losses and lifetimes of metals in the economy
Design of an endpoint indicator for mineral resource supply risks in life cycle sustainability assessment
Concerns have risen in recent years about the accessibility of raw materials considered “critical” for technological advancements. The GeoPolRisk indicator was designed as a midpoint indicator in life cycle sustainability assessment to measure geopolitical supply risk with the aim to incorporate raw material criticality as a complement to environmental life cycle assessment (LCA). A recent review of supply risk methods conducted within the Task F…
Does increased circularity lead to environmental sustainability
This study investigates under which circumstances increases in circularity through the reuse of use-phase-intensive electrical and electronic equipment lead to environmental benefits. We combine dynamic material flow analysis (dMFA) and life cycle assessment (LCA) to assess a Circular Economy strategy toward its environmental sustainability on midpoint and endpoint levels. The hybrid approach measures long-term implications of policy decisions in…
Environmental benefits of large‐scale second‐generation bioethanol production in the EU
The use of agricultural residues for the generation of bioethanol has the potential to substitute fuels such as petrol or first-generation bioethanol and thereby generate environmental benefits. Scientific research in this field typically confines the environmental dimension to global warming, disregarding other environmental impact and damage categories. By multi-criteria mixed-integer linear programming, this work examines environmental benefit…
Life cycle impact assessment methods for estimating the impacts of dissipative flows of metals
Transdisciplinary Development of a Life Cycle–Based Approach to Measure and Communicate Waste Prevention Effects in Local Authorities
Although waste prevention was promoted as the first priority for all EU member states in 2008, the actual implementation of activities has thus far been hesitant. Empirical evidence indicates that the reasons for this neglect include the limited measurability of waste prevention effects and the consequential lack of awareness, motivation, and incentive systems. Our research aims to quantify waste prevention and its environmental impacts and, ulti…
On the Attractiveness of Product Recovery
Product recovery is a major contributor for implementing sustainable business practices. Within such operations, which are either driven by legislation or economic rationales, practitioners face strategic issues concerning reverse market entry and positioning. Although the complexity of acting on reverse markets is widely acknowledged, a comprehensive framework to facilitate decision making in this area is lacking. In an attempt to fill that gap,…
Island and Indigenous systems of circularity
Given the dire consequences of the present global climate crisis, the need for alternative ecologically based economic models could not be more urgent. The economic and environmental concerns of the circular economy are well-developed in the literature. However, there remains a gap in research concerning the circular economy’s impact on culture and social equity. The underdeveloped social and cultural pillars of the circular economy, along with u…
Losses and lifetimes of metals in the economy
On the Attractiveness of Product Recovery
Product recovery is a major contributor for implementing sustainable business practices. Within such operations, which are either driven by legislation or economic rationales, practitioners face strategic issues concerning reverse market entry and positioning. Although the complexity of acting on reverse markets is widely acknowledged, a comprehensive framework to facilitate decision making in this area is lacking. In an attempt to fill that gap,…
Transdisciplinary Development of a Life Cycle–Based Approach to Measure and Communicate Waste Prevention Effects in Local Authorities
Although waste prevention was promoted as the first priority for all EU member states in 2008, the actual implementation of activities has thus far been hesitant. Empirical evidence indicates that the reasons for this neglect include the limited measurability of waste prevention effects and the consequential lack of awareness, motivation, and incentive systems. Our research aims to quantify waste prevention and its environmental impacts and, ulti…
Design of an endpoint indicator for mineral resource supply risks in life cycle sustainability assessment
Concerns have risen in recent years about the accessibility of raw materials considered “critical” for technological advancements. The GeoPolRisk indicator was designed as a midpoint indicator in life cycle sustainability assessment to measure geopolitical supply risk with the aim to incorporate raw material criticality as a complement to environmental life cycle assessment (LCA). A recent review of supply risk methods conducted within the Task F…
Does increased circularity lead to environmental sustainability
This study investigates under which circumstances increases in circularity through the reuse of use-phase-intensive electrical and electronic equipment lead to environmental benefits. We combine dynamic material flow analysis (dMFA) and life cycle assessment (LCA) to assess a Circular Economy strategy toward its environmental sustainability on midpoint and endpoint levels. The hybrid approach measures long-term implications of policy decisions in…
Environmental benefits of large‐scale second‐generation bioethanol production in the EU
The use of agricultural residues for the generation of bioethanol has the potential to substitute fuels such as petrol or first-generation bioethanol and thereby generate environmental benefits. Scientific research in this field typically confines the environmental dimension to global warming, disregarding other environmental impact and damage categories. By multi-criteria mixed-integer linear programming, this work examines environmental benefit…
Life cycle impact assessment methods for estimating the impacts of dissipative flows of metals
A terminology for downcycling
The term downcycling is often used anecdotally to describe imperfections in recycling. However, it is rarely defined. Here, we identify six meanings of the term downcycling as used in scientific articles and reports. These encompass the material quality of reprocessed materials, target applications, product value, alloying element losses, material systems, and additional primary production. In a proposal for harmonized and more specific terminolo…
Losses and lifetimes of metals in the economy
Assessing the social dimension in strategic network optimization for a sustainable development
The complexity of social indicators and their subjective and often qualitative nature render their inclusion into quantitative optimization models for network design and strategic decision-making challenging. The social dimension is thus often implemented only rudimentarily, thwarting a holistic sustainability assessment and neglecting many of the social issues addressed in the sustainable development goals (SDGs). This work presents a structured…
Island and Indigenous systems of circularity
Given the dire consequences of the present global climate crisis, the need for alternative ecologically based economic models could not be more urgent. The economic and environmental concerns of the circular economy are well-developed in the literature. However, there remains a gap in research concerning the circular economy’s impact on culture and social equity. The underdeveloped social and cultural pillars of the circular economy, along with u…
Life cycle sustainability assessment of substituting fossil based with biogenic materials
Bioeconomy is often cited as one pathway toward sustainable materials and a circular economy in an urban–rural context. This study conducts a life cycle sustainability assessment (LCSA)—life cycle assessment, social life cycle assessment, and life cycle costing (LCC)—to assess the benefits and impacts of substituting fossil polymer‐based products with biogenic alternatives through two product systems: drinking cups and insulation boxes. In detail…
Encounter the unforeseen
Bioeconomic supply chains (BioSC) processing biogenic resources and substituting fossil‐based products are prone to weather‐induced feedstock supply disruptions, which likely increase in severity and frequency due to climate change. To attain supply security of biobased products that contribute to sustainable development, BioSCs should be equipped with a certain level of “resilience” against unexpected feedstock fluctuations. Existing BioSC model…
Economics (12 works) · Business (9 works) · Life-cycle assessment (8 works) · Sustainable Supply Chain Management (8 works) · Computer Science (7 works) · Environmental Science (7 works) · Sustainability (7 works) · Environmental Impact and Sustainability (6 works) · Recycling and Waste Management Techniques (6 works) · Ecology (5 works)