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Mining, grinding and spreading of rock may have negative ecological impacts on affected areas, and may lead to GHG emissions related to energy use; if sourced as a by …
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The results of an LCA are used to identify which processes can be improved to minimize impacts and optimize production. LCA is composed of four phases: (1) goal and scope …
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Grinding spot width under 40 N under different lubrication conditions: (a) MQL and (b) NMQL. ... Friction–wear properties of zirconia ceramics obtained by NMQL grinding. By simulating the oral environment and applying a vertical load of 20 N, the dynamic friction coefficient shown in Fig. 30 is obtained. The maximum cutting thickness is very ...
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The batch ball mills used in the tests were mild steel (MS) and stainless steel (SS) with MS or SS balls, respectively. Slurry was purged by selected gas (CO 2 or N 2) for 5–10 min prior to sealing the mill and grinding to a grinding fineness of P 80 – 75 μm. Flotation tests were carried out with an Outokumpu type flotation machine in a 4 L …
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Michele Seghetta and Pietro Goglio Abstract Life cycle assessment (LCA) is a holistic methodology that identifies the impacts of a production system on the environment. The results of an LCA are used to identify which processes can be improved to minimize impacts and optimize production. LCA is composed of four phases: (1) goal and scope ...
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Environmental Science. 2018. The following paper provides an overview of the potential uses of seaweeds derived both from artificial cultivation as well as from …
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Seed Keywords. Seed keywords typically represent the core concepts or ideas related to your business, products, or services. For example, if you run an online store selling running shoes, your seed keywords might include "running shoes," "athletic shoes," "sports shoes," and so on.
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AU - Seghetta, Michele. AU - Tørring, Ditte. AU - Bruhn, Annette. AU - Thomsen, Marianne. PY - 2016/5/3. Y1 - 2016/5/3. N2 - The aim of the study is to assess the efficacy of seaweed for circular nutrient management to reduce eutrophication levels in …
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Case study 2 (Seghetta et al., 2017) assessed the environmental performance of offshore seaweed production and two alternative exploitation pathways (energy and protein production) through an LCA. The first pathway is based on anaerobic digestion of seaweed, which is converted into biogas for the production of electricity and …
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The effects of grinding media and pulp chemistry may have significant effects on floatability of sulphide ores. Grinding in mild steel mill is suggested to cause reducing environment, galvanic interactions and formation of surface hydroxides which suppress sulphide flotation.. In this study the influence of grinding environment on floatability of …
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Net positive performance indicates that the production system has environmental impact, whereas net negative performance indicates that the system avoids impacts and offers environmental services. A net positive value of Cumulative Energy Demand means that energy consumption exceeds energy production, but scenarios BC, …
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grinding amorphous polymorph hydrate dissolution abstract Nicergoline native crystals (Form I) were subjected to different grinding methods for 15, 30, 45, and 60 min: Method A, grinding at 20 C under air atmosphere; Method B, grinding in presence of liquid nitrogen under air atmosphere; Method C, grinding at 20 C under nitrogen atmosphere; and ...
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You get better grinding performance, better surface finish and greater precision. Compactly constructed, with a small foot-print and large machining area; Provide a direct view of machining process, w/ optimal-fitting doors having no drip edges; Open machining allows for easy set-up;
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DOI: 10.1016/J.ALGAL.2016.05.030 Corpus ID: 89018451; Modelling biogenic carbon flow in a macroalgal biorefinery system @article{Seghetta2016ModellingBC, title={Modelling biogenic carbon flow in a macroalgal biorefinery system}, author={Michele Seghetta and Michela Marchi and Marianne Thomsen and Anne Belinda Bjerre and Simone …
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Life cycle assessment (LCA) is a holistic methodology that identifies the impacts of a production system on the environment. The results of an LCA are used to identify which processes can be improved to minimize impacts and optimize production. ... Seghetta M, Hou X, Bastianoni S, Bjerre A-B, Thomsen M (2016) Life cycle assessment …
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Moreover, wet grinding can lead to chemical instability, contamination and negatively affect downstream processes. These reasons call for special precautions, such as milling in an inert or dry atmosphere. Consequently, investigation on the dry grinding concept is essential from an economic and environmental perspective [8, 9].
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This is a short term estimation of large-scale seaweed production systems based on a 20-year trend in offshore wind farming development (Seghetta et al., 2016a, …
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This thesis was intended to investigate the environmental impact of grinding in the United States manufacturing industry. Grinding is an ideal method for producing parts with a fine surface finish and high dimensional accuracy and for shaping hard or brittle workpieces. There are a wide variety of different types of grinding machines, each with ...
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Earth 's natural resources include air, water, soil, minerals, fuels, plants, and animals. Conservation is the practice of caring for these resources so all living things can benefit from them now and in the future. All the things we need to survive, such as food, water, air, and shelter, come from natural resources.Some of these resources, like small …
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With the use of six alternative production scenarios, Seghetta et al. (2016) made a comparative LCA exploit the benefits and reduce trade-offs in the performance of the environment for future macroalgal biorefineries (MABS) by converting the biomass into three different products: protein-rich content for fish feed, liquid fertilizer for ...
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The holistic approach of LCA provides a quantification of the impacts of an entire system. LCA can evaluate the seaweed value chain from cultivation, through …
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DOI: 10.1016/J.JCLEPRO.2016.07.195 Corpus ID: 156281248; Life cycle assessment of macroalgal biorefinery for the production of ethanol, proteins and fertilizers – A step towards a regenerative bioeconomy
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An attempt has been made in this paper to determine the optimal setting of slab milling process parameters. Four process parameters, i.e. cutting fluid, cutting speed, feed and depth-of-cut each at…
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A "well-to-wheel" life cycle assessment was undertaken to evaluate algae's potential use as a transportation energy source for passenger vehicles and suggests that both cultivation and conversion processes must be carefully considered to ensure the environmental viability of algae- to-energy processes. Expand
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ABSTRACT. The texture features of the grinding surface are not obvious, when the light source environment and shooting angle change, the prediction model of grinding surface roughness based on the deep learning method is greatly affected.
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Depending on the grinding burr or grinding disc you use, the Surface Roughness Profile you can expect goes in the 40-75 microns (2.5 mils) range and achieve +1,600 psi on Pull Test. You can see more details in the comparative table above. Our tools are ideal for corrosion removal and spot repair.
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This is a short term estimation of large-scale seaweed production systems based on a 20-year trend in offshore wind farming development (Seghetta et al., 2016a, Seghetta et al., 2016b) (Supplementary material, Fig. S1). The results refer to a functional unit of 1 ha of sea under cultivation.
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Environmental restoration and climate mitigation is achieved in all scenarios. ... Adams et al., 2009), makes seaweed a suitable feedstock for bioethanol production (Seghetta et al., 2016a, Aitken et al., 2014) and biogas production (Alvarado-Morales et al., 2013, Kaspersen et al., 2016) as a form of renewable energy that could support society ...
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