Carbon capture and storage

Gibbins, Jon; Chalmers, Hannah

doi:10.1016/j.enpol.2008.09.058

Cited by 778 publications

(373 citation statements)

References 3 publications

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“…The weak disposability property only applies to undesirable outputs, because we assume that producers cannot dispose freely of the undesirable outputs, so producers need to divert either their inputs or desirable outputs to cover the costs. For example, electric utility plants may install carbon capture devices to reduce their greenhouse gas emissions (Gibbins and Chalmers 2008).…”

Section: Fundamental Concepts Of Frontier Methodsologiesmentioning

confidence: 99%

Measuring Eco-Inefficiency: A New Frontier Approach

Chen

Delmas

2012

Operations Research

148

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Increasing social concerns over the environmental externalities associated with business activities are pushing firms to identify activities that create economic value with less environmental impact and to become more eco-efficient. Over the past two decades, researchers have increasingly used frontier efficiency models to evaluate productive efficiency in the presence of undesirable outputs, such as greenhouse gas emissions. In this paper, we identify critical flaws of existing frontier models and show that under these models eco-inefficient firms can be identified as eco-efficient. We develop a new ecoinefficiency frontier model that rectifies these problems. Our model allows us to calculate, for each firm, an eco-inefficiency score and improvements in outputs necessary to attain eco-efficiency. We demonstrate, through a Monte-Carlo experiment that our eco-inefficiency model provides a more reliable measurement of corporate eco-inefficiency than the existing frontier models. In the simulation experiment we develop a production function of multiple desirable and undesirable outputs that extends the classical Cob-Douglas function of a single output. The multi-output production function allows for greater flexibility in the simulation analysis of frontier models.

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Section: Fundamental Concepts Of Frontier Methodsologiesmentioning

confidence: 99%

Measuring Eco-Inefficiency: A New Frontier Approach

Chen

Delmas

2012

Operations Research

148

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“…Indeed, large-area GN films with an electrical conductivity as high as 1;214 S∕cm, superior to their GO counterparts, have been prepared simply by solution casting the ECG dispersions on a substrate, followed by thermal decarboxylation. In addition, the use of dry ice (or CO 2 gas) as a reagent for carboxylation in the ball milling could also facilitate the CO 2 capture and storage to reduce their detrimental effects on our planet (21). Therefore, the newly developed ball milling approach, involving neither hazardous chemicals nor tedious procedures, outperforms current processes for mass production of high-quality GNs at an unprecedented low cost.…”

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confidence: 99%

Edge-carboxylated graphene nanosheets via ball milling

Jeon

Shin

Sohn

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

619

420

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Low-cost, high-yield production of graphene nanosheets (GNs) is essential for practical applications. We have achieved high yield of edge-selectively carboxylated graphite (ECG) by a simple ball milling of pristine graphite in the presence of dry ice. The resultant ECG is highly dispersable in various solvents to self-exfoliate into single-and few-layer (≤5 layers) GNs. These stable ECG (or GN) dispersions have been used for solution processing, coupled with thermal decarboxylation, to produce large-area GN films for many potential applications ranging from electronic materials to chemical catalysts. The electrical conductivity of a thermally decarboxylated ECG film was found to be as high as 1214 S∕cm, which is superior to its GO counterparts. Ball milling can thus provide simple, but efficient and versatile, and eco-friendly (CO 2 -capturing) approaches to low-cost mass production of high-quality GNs for applications where GOs have been exploited and beyond.carbon dioxide | eco-friendly | edge-functionalization | graphite A s a building block for carbon nanomaterials of all other dimensionalities, such as 0D buckyball, 1D nanotubes, and 3D graphite, graphene nanosheets (GNs) with carbon atoms densely packed in a 2D honeycomb crystal lattice have recently attracted tremendous interest for various potential applications (1). Several techniques, including the peel-off by Scotch tape (2), epitaxial growth on SiC (3), chemical vapor deposition (CVD) (4, 5), and solution exfoliation of graphite oxide (GO) (6), have been reported for producing GNs. Although the Scotch tape method led to the Nobel-Prize-winning discovery of high quality GNs (2), it is unsuitable for large-area preparation of GN films due to technique difficulties. On the other hand, large-area thin GN films up to 30 in. have been prepared by CVD (7). However, the CVD process involves extremely careful fabrication processes, which appears to be too tedious and too expensive for mass production. The widely reported solution exfoliation of graphite into GO, followed by solution reduction (8-10), allows the mass production of GNs via an all-solution process. Due to strong interactions between the hexagonally sp 2 -bonded carbon layers in graphite, however, the solution exfoliation requires the involvement of hazardous strong oxidizing reagents (e.g., HNO 3 , KMnO 4 , and/or H 2 SO 4 ) and a tedious multistep process (8,9,11,12). Such a corrosive chemical oxidation often causes severe damage to the carbon basal plane to introduce a large number of chemical and topological defects (13). As a result, postexfoliation reduction of GO into reduced graphene oxide (rGO) is essential in order to restore the graphitic basal plane for the resultant GNs (6,[14][15][16][17][18][19]. To make the matter worse, the reduction reaction also involves hazardous reducing reagents (e.g., hydrazine, NaBH 4 ) with a limited reduction conversion (approximately 70%) (20). The reduced GO (rGO) still contains considerable oxygenated groups and structural defects, and thus additional...

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“…In CCS system, the CO 2 gas is captured in an amine-based or carbonate-based adsorbents and stored in a vessel as compressed gas and transported to a place where it could have negligible effect on the environment [3]. Still, these technologies are energy intensive because of the thermal treatment required to regenerate the absorbents rendering it to be expensive [4].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Ankistrodesmus falcatus for Bicarbonate-Based Integrated Carbon Capture System (BICCAPS)

Beltran

Gravador

et al. 2018

MATEC Web Conf.

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Abstract. This study evaluates the performance of alkaliphilic microalgae Ankistrodesmus falcatus in the Bicarbonate-based Integrated Carbon Capture and Algae Production System (BICCAPS). The system utilized bicarbonate as carbon source for microalgae production. BICCAPS parameters such as pH, algal biomass productivity and CO2 utilization (inorganic carbon conversion, Ci) were observed at different sodium bicarbonate (NaHCO3) loading concentration and type of culture media. The highest productivity was observed at 10 g/L of NaHCO3 loading in BRSP medium at 3.5539 mg/L/day. This value is 30% lower compared to the control experiment (continuously aerated bioreactor). The Ci values of the different system ranges from 1.17 x 10 -4 to 1.51 x 10 -4 moles/L/day. Both the pH of the BRSP and NPK media at 10 g/L and 30g/L loading of NaHCO3 increased through time. The result shows that A. falcatus has a potential in BICCAPS utilization.

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Carbon capture and storage

Cited by 778 publications

References 3 publications

Measuring Eco-Inefficiency: A New Frontier Approach

Measuring Eco-Inefficiency: A New Frontier Approach

Edge-carboxylated graphene nanosheets via ball milling

Evaluation of Ankistrodesmus falcatus for Bicarbonate-Based Integrated Carbon Capture System (BICCAPS)

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