In pursuit of Sustainable Development Goal (SDG) number 7: Will biofuels be reliable?

Acheampong, Michael; Ertem, Funda Cansu; Kappler, Benjamin; Neubauer, Peter

doi:10.1016/j.rser.2016.11.074

Cited by 125 publications

(56 citation statements)

References 83 publications

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“…In DEP-based cell manipulation and sorting, the movement of polarizable particles, such as cells, in an inhomogeneous electric field is dependent on their intrinsic dielectric properties in comparison to Despite these advances, many challenges still remain [15][16][17]. Identifying and developing strains with higher productivity, improved understanding of their behaviors under diverse cultivation conditions, and better insights into the heterogeneous population are all some of the key advances that have to be made in the upstream process of microalgae biotechnology and bioprocessing [16,[18][19][20][21][22]]. Yet, these development processes are often time-consuming and labor-intensive, posing as a significant bottleneck.…”

Section: Dep Technology For Cell Population Analysismentioning

confidence: 99%

Separation, Characterization, and Handling of Microalgae by Dielectrophoresis

et al. 2020

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Microalgae biotechnology has a high potential for sustainable bioproduction of diverse high-value biomolecules. Some of the main bottlenecks in cell-based bioproduction, and more specifically in microalgae-based bioproduction, are due to insufficient methods for rapid and efficient cell characterization, which contributes to having only a few industrially established microalgal species in commercial use. Dielectrophoresis-based microfluidic devices have been long established as promising tools for label-free handling, characterization, and separation of broad ranges of cells. The technique is based on differences in dielectric properties and sizes, which results in different degrees of cell movement under an applied inhomogeneous electrical field. The method has also earned interest for separating microalgae based on their intrinsic properties, since their dielectric properties may significantly change during bioproduction, in particular for lipid-producing species. Here, we provide a comprehensive review of dielectrophoresis-based microfluidic devices that are used for handling, characterization, and separation of microalgae. Additionally, we provide a perspective on related areas of research in cell-based bioproduction that can benefit from dielectrophoresis-based microdevices. This work provides key information that will be useful for microalgae researchers to decide whether dielectrophoresis and which method is most suitable for their particular application.

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Section: Dep Technology For Cell Population Analysismentioning

confidence: 99%

Separation, Characterization, and Handling of Microalgae by Dielectrophoresis

et al. 2020

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“…In December 2015, over 190 countries across the globe acceded to employing activities and technologies that minimize the effects of global climate change [1]. Among the technologies considered is to increase the utilization of biomass-derived energy sources (also called bioenergy).…”

Section: Introductionmentioning

confidence: 99%

“…Farmers/waste collection centres -Usually contain feedstocks that are described as firstgeneration (1G), second-generation (2G) and thirdgeneration (3G) [10]. The 1G feedstocks (starch-, sugar-and oil-based) are edible foods which have led to the rise in prices of food due to competition in accessing limited resources (like land) to produce bioenergy products [1]. Today, majority of bioenergy investments are based on 1G feedstocks (such as sugarcane, corn and palm oil) whereby most commercialized bioenergy production technologies also utilize the 1G feedstocks [11].…”

Section: Introductionmentioning

confidence: 99%

Optimization of biogas supply networks considering multiple objectives and auction trading prices of electricity

et al. 2020

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This contribution presents an hourly-based optimization of a biogas supply network to generate electricity, heat and organic fertilizer while considering multiple objectives and auction trading prices of electricity. The optimization model is formulated as a mixed-integer linear programming (MILP) utilizing a four-layer biogas supply chain. The model accounts for biogas plants based on two capacity levels of methane to produce on average 1 ± 0.1 MW and 5 ± 0.2 MW electricity. Three objectives are put forward: i) maximization of economic profit, ii) maximization of economic profit while considering cost/benefits from greenhouse gas (GHG) emissions (economic +GHG profit) and iii) maximization of sustainability profit. The results show that the economic profit accrued on hourly-based auction trading prices is negative (loss), hence, four additional scenarios are put forward: i) a scenario whereby carbon prices are steadily increased to the prevalent eco-costs/eco-benefits of global warming; ii) a scenario whereby all the electricity auction trading prices are multiplied by certain factors to find the profitability breakeven factor, iii) a scenario whereby shorter time periods are applied, and investment cost of biogas storage is reduced showing a relationship between cost, volume of biogas stored and the variations in electricity production and (iv) a scenario whereby the capacity of the biogas plant is varied from 1 MW and 5 MW as it affects economics of the process. The models are applied to an illustrative case study of agricultural biogas plants in Slovenia where a maximum of three biogas plants could be selected. The results hence present the effects of the simultaneous relationship of economic profit, economic +GHG profit and sustainability profit on the supply and its benefit to decision-making.

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“…However, there are many concerns concerning the development of this biofuel production for examples the impacts on food security and land use and the net GHG‐impact. Land that is used for bio‐energy cropping might replace land previously used for food production . The food price hikes during 2008‐2010 in the United States, European Union, Japan and Brazil were critical reason for reconsidering the expansion of cultivating food crops to produce biofuels.…”

Section: Introductionmentioning

confidence: 99%

“…Land that is used for bio-energy cropping might replace land previously used for food production. 11 The food price hikes during 2008-2010 in the United States, European Union, Japan and Brazil were critical reason for reconsidering the expansion of cultivating food crops to produce biofuels. Production of biomass for biofuels may have a negative GHG-balance.…”

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confidence: 99%

Implementing a palm oil‐based biodiesel policy: The case of Thailand

Nupueng

Oosterveer

Mol

2018

Energy Science & Engineering

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Renewable energy promotion is recognized as an important goal in international climate policies in order to reduce CO2‐emissions. Biodiesel can potentially be an important contributor in this respect, especially in Thailand with its large biomass production from oil palm cultivation. Palm oil is the main raw feedstock for biodiesel production. However, biodiesel production is also controversial in many respects, in particular considering its sustainability. This paper assesses the collaboration between different actors in the Thai biodiesel and oil palm networks in organizing biodiesel provision. Through qualitative interviews with key political, economic, and societal actors the structure and the dynamic of the biodiesel and oil palm industry, as well as the relevant policy dynamics, were investigated. We found that the implementation of biodiesel policy was dominated by the need to secure the production of palm oil‐based cooking oil leading to frequent adjustments. Sustainable improvement and environmental considerations hardly played a role in the interactions between the actors involved in the palm oil and biodiesel industries. Government agencies were dominant and steered the biodiesel and the oil palm industries both directly and indirectly via economic and societal actors. Nevertheless, the promotion of biodiesel continues to be the basis of the national renewable energy master plan with its clear target to balance and stabilize the economic, social and environmental issues. As the renewable energy master plan does not fit with the possible feedstock, the main challenges in achieving these sustainable targets are therefore how to maintain a stable and consistent policy, especially concerning balancing the palm oil used for biodiesel production on the one hand and palm oil‐based cooking oil on the other.

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In pursuit of Sustainable Development Goal (SDG) number 7: Will biofuels be reliable?

Cited by 125 publications

References 83 publications

Separation, Characterization, and Handling of Microalgae by Dielectrophoresis

Separation, Characterization, and Handling of Microalgae by Dielectrophoresis

Optimization of biogas supply networks considering multiple objectives and auction trading prices of electricity

Implementing a palm oil‐based biodiesel policy: The case of Thailand

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