Comparative attributional life cycle assessment of European cellulase enzyme production for use in second-generation lignocellulosic bioethanol production

Gilpin, Geoffrey; Andrae, Anders

doi:10.1007/s11367-016-1208-4

Cited by 38 publications

(29 citation statements)

References 33 publications

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“…At present, LCA is widely used in production process research, specifically involving the planting industry, the food industry, waste disposal, and other aspects. The application of LCA in many fields has shown a systematic, diversified, and refined development trend [35][36][37]. The LCA evaluation method mainly includes the following four steps: Goal and scope definition, life cycle inventory (LCI) analysis, impact assessment, and result interpretation [38,39].…”

Section: Life Cycle Assessmentmentioning

confidence: 99%

Empirical Research on the Process of Land Resource-Asset-Capitalization—A Case Study of Yanba, Jiangjin District, Chongqing

Fan

Chen

et al. 2020

Sustainability

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As an effective land policy that can invigorate rural construction areas and balance urban and rural development, land tickets not only concretely embody the land resource-asset-capitalization process, but also bring economic benefits to the farmers concerned. However, from the perspective of resource-asset-capitalization, the specific environmental impacts and economic costs of the process in land tickets and the changes in the values of ecosystem services need to be considered. This paper uses land tickets in Yanba, Jiangjin, Chongqing as an example, combined with life cycle assessment (LCA), life cycle cost assessment (LCC), and methods for the evaluation of ecosystem services to quantify the environmental load, economic costs, and changes in the value of ecosystem services in the process of land resource-asset-capitalization. Moreover, through this analysis, we attempted to determine the contributions of different environmental indicators and the key links restricting the whole process of land resource-asset-capitalization. On this basis, through a sensitivity analysis, we explored the possibility of reducing environmental impact during the whole process of land resource-asset-capitalization. Through this research, we sought to explore the realization process of land tickets and to enrich the empirical research on land resource-asset-capitalization.Sustainability 2020, 12, 1236 2 of 23 very limited due to the uneven development of its economy, the uneven distribution of its resources, and its large population base. At the same time, with the adjustment of China's macroeconomic policies and the changes in personal development intentions, increasingly more rural people have begun to leave the countryside for better development opportunities in cities [7][8][9][10]. However, due to limited land resources, a large amount of cultivated, high-quality land will inevitably be occupied to meet the needs of the increasing urban population in the process of China's urbanization. If a series of compensation measures are not taken, the ultimate result of this development model is likely to endanger China's red line of 120 million hectares of arable land and aggravate the contradiction between humans and the land. Taking China's land resources as an example, it is necessary to explore the future of China's land resources under the background of economic development.In order to develop and utilize land resources rationally, the Chinese government began to attach importance to the capitalization construction of natural resources. The "resource-asset-capital" trinity of land resource management idea, put forward by the Ministry of Natural Resources of the People's Republic of China, is the most prominent of these measures. The Ministry of Natural Resources noted that natural resources should be managed gradually according to the "trinity" relationship of resources to assets and assets to capital, to revitalize existing limited natural resources and to help utilize idle natural resources to the greatest extent. The operation a...

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Section: Life Cycle Assessmentmentioning

confidence: 99%

Empirical Research on the Process of Land Resource-Asset-Capitalization—A Case Study of Yanba, Jiangjin District, Chongqing

Fan

Chen

et al. 2020

Sustainability

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“…For hydrolysis, a generic enzyme loading of 0.02 mg protein per gram of cellulose in the hydrolysate was assumed (Humbird et al, 2011;Kumar & Murthy, 2011). The inventory for enzyme provision was based on a recent publication by Gilpin and Andrae (2017). Fermentation efficiencies of 95% for glucose and 70% for xylose were adopted from Kumar and Murthy (2011).…”

Section: Bioethanol Production-conversionmentioning

confidence: 99%

“…For instance, figures for CO 2 equivalents range from 2.5 to 22.0 kg CO 2 eq/kg enzyme (Agostinho, Bertaglia, Almeida, & Giannetti, 2015;MacLean & Spatari, 2009). In the present study, a recent inventory published by Gilpin and Andrae (2017) was used. With respect to the comprehensive nature of the inventory and GHG emissions of approximately 10 kg CO 2 eq/kg enzyme, the data are considered to offer reasonable estimates.…”

Section: Conversionmentioning

confidence: 99%

Life cycle assessment of ethanol production from miscanthus: A comparison of production pathways at two European sites

et al. 2018

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Lignocellulosic ethanol represents a renewable alternative to petrol. Miscanthus, a perennial plant that grows on marginal land, is characterized by efficient use of resources and is considered a promising source of lignocellulosic biomass. A life cycle assessment (LCA) was performed to determine the environmental impacts of ethanol production from miscanthus grown on marginal land in Great Britain (Aberystwyth) and an average-yield site in Germany (Stuttgart; functional unit: 1 GJ). As the conversion process has substantial influence on the overall environmental performance, the comparison examined three pretreatment options for miscanthus. Overall, results indicate lower impacts for the production in Stuttgart in comparison with the corresponding pathways in Aberystwyth across the analysed categories. Disparities between the sites were mainly attributed to differences in biomass yield. When comparing the conversion options, liquid hot water treatment resulted in the lowest impacts, followed by dilute sulphuric acid. Dilute sodium hydroxide pretreatment represented the least favourable option. Site-dependent variation in biomass composition and degradability did not have substantial influence on the environmental performance of the analysed pathways. Additionally, implications of replacing petrol with miscanthus ethanol were examined. Ethanol derived from miscanthus resulted in lower impacts with respect to greenhouse gas emissions, fossil resource depletion, natural land transformation and ozone depletion. However, for other categories, including toxicity, eutrophication and agricultural land occupation, net scores were substantially higher than for the fossil reference. Nevertheless, the results indicate that miscanthus ethanol produced via dilute acid and liquid hot water treatment at the site in Stuttgart has the potential to comply with the requirements of the European Renewable energy directive for greenhouse gas emission reduction. For ethanol production at the marginal site, carbon sequestration needs to be considered in order to meet the requirements for greenhouse gas mitigation.

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“…Generally, the LCA evaluation method includes four steps: goal and scope definition, life cycle inventory (LCI) analysis, impact assessment and results interpretation [29,30]. Among these steps, the goal and scope definition, which mainly includes defining the objectives of the evaluation, determining the functional unit, and clarifying the system boundary, is the prerequisite and basis for carrying out an LCA evaluation.…”

Section: Methodsmentioning

confidence: 99%

Life Cycle Environmental Impact Assessment of Circular Agriculture: A Case Study in Fuqing, China

Fan

Zhang

et al. 2018

Sustainability

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The process for reasonably evaluating the potential impacts of circular agriculture on the environment has become a key issue in the sustainable development of circular agriculture. Based on this consideration, by using Life Cycle Assessment (LCA) and focusing on the circular agriculture industry company of Xingyuan, Fuqing, this paper evaluates the potential impacts of the pig farming industry-dragon fruit planting-forage planting-fishery industry-mushroom planting-biogas generating-organic fertilizer production circular agriculture model compared to a main agriculture industrial model, the pig farming industry, from environmental and environmental-economic perspectives. Moreover, this paper determines key elements that restrict the development of circular agriculture through a sensitivity analysis. The results show that if we simply consider the potential environmental impacts, circular agriculture does not produce better results than those of the main agricultural production model. In addition, if we consider reducing the potential environmental impact as well as improving the economic benefits from the perspective of a "reduction ring", we should consider removing mushroom planting and organic fertilizer from the circular agriculture framework. Moreover, if we want to reduce the potential environmental impact without changing the current recycling model, we should focus on the premix components, especially the three main components of corn, soybean meal, and whey protein concentrate.

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Comparative attributional life cycle assessment of European cellulase enzyme production for use in second-generation lignocellulosic bioethanol production

Cited by 38 publications

References 33 publications

Empirical Research on the Process of Land Resource-Asset-Capitalization—A Case Study of Yanba, Jiangjin District, Chongqing

Empirical Research on the Process of Land Resource-Asset-Capitalization—A Case Study of Yanba, Jiangjin District, Chongqing

Life cycle assessment of ethanol production from miscanthus: A comparison of production pathways at two European sites

Life Cycle Environmental Impact Assessment of Circular Agriculture: A Case Study in Fuqing, China

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