Characterization of reactive CaCO3 crystallization in a fluidized bed reactor as a central process of direct air capture

Burhenne, Luisa; Giacomin, Caroline E.; Follett, Trevor; Ritchie, Jane; McCahill, Jenny S. J.; Mérida, Walter

doi:10.1016/j.jece.2017.10.047

Cited by 17 publications

(8 citation statements)

References 24 publications

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“…The initial growth of a mature bed from seeds takes several months under typical process conditions (Figure 4D), and the cycle from pellet discharge and seed addition to recovery of the bed density profile is about 2 days (Figure 4A). In addition to the primary pilot, we built two 0.1 3 5.2-m "benchtop" pellet reactors, 18 to allow testing under a larger number of process conditions and to test in conditions that might cause bed collapse and reactor plugging, which would have been difficult to manage in the primary pilot.…”

Section: Pilot Pellet Reactormentioning

confidence: 99%

“…Uncertainty might be reduced if detailed specifications of individual DAC technologies were available. Yet, despite growing interest in carbon removal as a component of climate strategy, one thorough review, 8 many papers on DAC-to-CCS (carbon capture and storage) comparison, [9][10][11][12][13] specific absorbers, [14][15][16][17] or components of plausible DAC systems, 18 no prior paper provides a design and engineering cost basis for a complete DAC system for which all major components are (1) drawn from wellestablished commercial engineering heritage, or (2) described in sufficient detail to allow assessment by third parties. This paper aims to fill that gap.…”

Section: Introductionmentioning

confidence: 99%

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A Process for Capturing CO2 from the Atmosphere

Keith

Holmes

Angelo

et al. 2018

Joule

1,253

916

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First direct air capture paper for which all major components are either drawn from well-established commercial heritage or described in sufficient detail to allow assessment by third parties. Includes energy and materials balances, commercial engineering cost breakdown, and pilot plant data. When CO 2 is delivered at 15 MPa, the design requires either 8.81 GJ of natural gas, or 5.25 GJ of gas and 366 kWhr of electricity, per ton of CO 2 captured.

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Section: Pilot Pellet Reactormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Process for Capturing CO2 from the Atmosphere

Keith

Holmes

Angelo

et al. 2018

Joule

1,253

916

View full text Add to dashboard Cite

show abstract

“…À and H 2 CO 3 in water are in constant exchange with CO 2 in the air, the removal of HCO 3 À from water ultimately increases the CO 2 -uptake from the air. An extreme version of PR has even been proposed as an efficient process to capture CO 2 from air (Burhenne et al, 2017). We take this CO 2 -uptake into account as the exchange happens on relatively short time scales compared to the effects of global warming.…”

Section: Carbon Capture Due To Production Of Calcitementioning

confidence: 99%

Carbon footprint of drinking water softening as determined by life cycle assessment

Beeftink

Hofs

Kramer

et al. 2021

Journal of Cleaner Production

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In the Netherlands, central softening of drinking water is widely applied for reasons of public health, client comfort, economic and environmental benefits. Currently, the detrimental contributions of softening, in particular the use of chemicals and energy, are taken into account in the carbon footprint of the Dutch drinking water companies. The beneficial contributions have, however, until now not been included in the carbon footprint. Here, we present an attributional life cycle assessment (LCA) for the softening of drinking water, including effects at the household level and several sensitivity analyses. Five central softening methods were included (pellet reactor (PR), water storage reservoir (WSR), reverse osmosis (RO), nanofiltration (NF) and ion exchange (IEX)). Domestic softening by IEX is represented as well. Central softening, except RO, is shown to reduce the carbon footprint when effects at the household level are included. The main detrimental contributions are caused by the consumption of chemicals and energy in the softening process. The main beneficial contributions of softened water with respect to the carbon footprint are at the household level. Decreases in water hardness result in reduced scaling and give rise to a prolonged lifespan of appliances in which water is heated, reduced energy use of those appliances and less required cleaning agents. For PR and WSR a new beneficial effect was identified; carbon capture in the crystallized calcite and dissolution of CO 2 into the softened water. We show that for the Dutch water companies Evides and Waternet approximately 20% and 60%, respectively, of their total carbon footprint is compensated by the net carbon benefit of softening. The net total carbon footprint of drinking water softening in the Netherlands is estimated to be À0.11 Mtonne CO 2 eq./yr.

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“…The design used for pilot plant have to meet two main aims are (1) to minimize the technical risk having possibility to occur at any unit operation using commercial scale hardware, & (2) to specify closed-loop process in building up of each unit. The CE is providing results & prototype designs for each pilot plants to improve pilot performances from some laboratory data [18][19][20]. Since the pilot is not used as a fully commercial plant with short-scale version, then some miniature risks presented by CO 2 compression & gas clean process is not taken for consideration.…”

Section: Resultsmentioning

confidence: 99%

A New Process of Capturing Carbon Dioxide Gas From The Atmosphere Using Solid and Aqueous Sorbents in Pilot Plant

Talapatra¹

2018

SJE

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The capturing process of CO 2 directly from air has been developed largely considering with commercial scale in pilot plants. This is done so that the capture CO 2 from air can be used as a feedstock or raw material for producing carbon free renewable fuels by applying direct air capture (DAC) process. This way of capturing is gone to be possible with using some solid & aqueous sorbents in pilot plant. The success of this capturing process is depended on the appropriate configurations of both major & minor plant operations. Heat & mass balance are required necessarily to contribute on the finding of each pilot plants data. The design of this process is modeled like this so that the captured CO 2 can be delivered at 15MPa into the pilot plant & for this, the requirements of energy inputs are about 8.81GJ or 5.25GJ of natural gas & 0 KWHr or 336KWHr of electricity respectively. Then all the results finding from the pilot contactor, reactor, calciner are optimized to reduce the processing cost of the capturing process. It is observed after the ending of the process that the amount of operating cost is ranged between 50$ to 100$ to capture per ton of CO 2 from surrounding air where the total levelized cost of the whole process ranges between 94$ to 232$/t-CO 2. If it considers the other specific choices such as financial safety, environ mental & ecological arrangements etc. then this DAC process would be the best reliable solution to capture the CO 2 from air in upcoming decades.

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Characterization of reactive CaCO3 crystallization in a fluidized bed reactor as a central process of direct air capture

Cited by 17 publications

References 24 publications

A Process for Capturing CO2 from the Atmosphere

A Process for Capturing CO2 from the Atmosphere

Carbon footprint of drinking water softening as determined by life cycle assessment

A New Process of Capturing Carbon Dioxide Gas From The Atmosphere Using Solid and Aqueous Sorbents in Pilot Plant

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