Laboratory to bench-scale evaluation of an integrated CO2 capture system using a thermostable carbonic anhydrase promoted K2CO3 solvent with low temperature vacuum stripping

Qi, Guojie; Liu, Kun; House, Alan; Salmon, Sonja; Ambedkar, B.; Frimpong, Reynolds A.; Remias, Joseph E.; Liu, Kunlei

doi:10.1016/j.apenergy.2017.10.083

Cited by 35 publications

(26 citation statements)

References 40 publications

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“…CA is a diffusion‐limited enzyme that catalyzes the hydration of CO 2 , which is the rate‐limiting step of HCO 3 − formation from CO 2 , with a k cat of up to 4.4 × 10 6 s −1 (Vullo et al, ). By accelerating CO 2 conversion into HCO 3 − , CA can potentially reduce reaction time and energy requirement and improve the overall efficiency for CCUS processes based on mineral carbonation, electrochemical CO 2 reduction, and CO 2 absorption, all of which rely on the supply of HCO 3 − (Penders‐van Elk et al, ; Power et al, ; Qi et al, ; Srikanth et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…The recently discovered halotolerant CA ( hm CA) from the marine bacterium Hydrogenovibrio marinus showed excellent activity and stability (Jo, Im, & Cha, ), making this enzyme an attractive candidate for biomimetic CCUS that generally operates under high‐salt (or electrolyte) conditions and often encounters flue gas impurities (Power et al, ; Qi et al, ; Savile & Lalonde, ; Srikanth et al, ). In addition, hm CA was highly produced in E. coli with excellent solubility conferred by its N‐terminal extension, which is advantageous for the construction of a bacterial whole‐cell catalytic system.…”

Section: Introductionmentioning

confidence: 99%

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Engineering the genetic components of a whole‐cell catalyst for improved enzymatic CO₂ capture and utilization

Moon

Joon

2019

Biotech & Bioengineering

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Carbonic anhydrase (CA) is a diffusion‐limited enzyme that rapidly catalyzes the hydration of carbon dioxide (CO2). CA has been proposed as an eco‐friendly yet powerful catalyst for CO2 capture and utilization. A bacterial whole‐cell biocatalyst equipped with periplasmic CA provides an option for a cost‐effective CO2‐capturing system. However, further utilization of the previously constructed periplasmic system has been limited by its relatively low activity and stability. Herein, we engineered three genetic components of the periplasmic system for the construction of a highly efficient whole‐cell catalyst: a CA‐coding gene, a signal sequence, and a ribosome‐binding site (RBS). A stable and halotolerant CA (hmCA) from the marine bacterium Hydrogenovibrio marinus was employed to improve both the activity and stability of the system. The improved secretion and folding of hmCA and increased membrane permeability were achieved by translocation via the Sec‐dependent pathway. The engineering of RBS strength further enhanced whole‐cell activity by improving both the secretion and folding of hmCA. The newly engineered biocatalyst displayed 5.7‐fold higher activity and 780‐fold higher stability at 60°C compared with those of the previously constructed periplasmic system, providing new opportunities for applications in CO2 capture and utilization.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Engineering the genetic components of a whole‐cell catalyst for improved enzymatic CO₂ capture and utilization

Moon

Joon

2019

Biotech & Bioengineering

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“…Integration of a dewatering membrane must be balanced with the overall cost of the system where a higher flux membrane will decrease the capital cost of the membrane component. Due to the nature of the process (decoupling of absorption and desorption active solvent concentrations), the benefits can be broadly applicable to other capture systems where trade‐offs exist between mass transfer limitations in the absorber and exorbitant energy regeneration requirements in the stripper 5,11,12 …”

Section: Introductionmentioning

confidence: 99%

FAU zeolite membranes for dewatering of amine‐based post‐combustion CO₂ capture solutions

2020

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In amine-based CO 2 capture processes, aqueous amine solvent is circulated between absorber (CO 2 absorption) and stripping (solvent regeneration) columns. To reduce solvent regeneration energy demand, a selective membrane can dewater and enrich the CO 2 concentration in solution prior to the stripper, lowering steam requirements for solution heating. In this work, a facile synthesis strategy was developed to prepare faujasite (FAU) zeolite membranes built upon polydopamine (PDA) modified α-Al 2 O 3 substrates. PDA facilitated the attachment of zeolite phases onto the substrate surface to form a 3 μm membrane layer. Membrane permeation flux of 4.45 kg m −2 h −1 and 95% rejection rate calculated by either CO 2 loading or total alkalinity was achieved in dewatering of CO 2 loaded 30 wt% monoethanolamine (MEA) solution. The effects of temperature on membrane dewatering performance and stability were investigated. This study highlights the potential for process integration of membrane technology in amine-based post-combustion CO 2 capture operations.

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“…Dziedzic et al showed that NaOH enhances CO 2 absorption in water. In addition, K 2 CO 3 has been studied in this regard. − Solutions with calcium carbonate dissolved in water have also been considered, with experimental testing of reactor setups, , and cost estimations…”

Section: Introductionmentioning

confidence: 99%

“…CA-based enzymatic reactive CO 2 absorption has been studied in lab-scale stirred-cell reactors to experimentally determine reaction rate constants ,, that are important for estimation of equipment dimensions. Upscaling to bench- and pilot-scale testing in absorber columns has also been reported with subsequent development of process models and long-term evaluation of CA thermo-stability . The methods developed for the application of CA in industrial processes and reactors have been summarized by Russo et al Typically, the enzyme is used as a “free” catalyst dissolved in the solution or immobilized onto a solid structure, for example, column packing material .…”

Section: Introductionmentioning

confidence: 99%

Enhancement of CO₂ Absorption in Water through pH Control and Carbonic Anhydrase–A Technical Assessment

Beiron

Normann

Kristoferson³

et al. 2019

Ind. Eng. Chem. Res.

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This paper provides an industrial-scale technical assessment of absorption of CO 2 in water to react into bicarbonate (HCO 3 − ), with the goal of storing HCO 3 − in the oceans as a carbon sequestration technology. A potential advantage of the process is that it will not require a CO 2 transport and storage infrastructure that will be expensive for small-scale and remote emission sources. Process simulations are utilized to estimate absorber column length and for mass flow estimations of water and base required for a target capture rate of 90%. The results indicate that the process is technically feasible under specific conditions, with pH regulation being highly important, although the demand for base represents a limiting factor. Yet, a potential niche for the process is CO 2 capture at smaller plants emitting small amounts of CO 2 .

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Laboratory to bench-scale evaluation of an integrated CO2 capture system using a thermostable carbonic anhydrase promoted K2CO3 solvent with low temperature vacuum stripping

Cited by 35 publications

References 40 publications

Engineering the genetic components of a whole‐cell catalyst for improved enzymatic CO₂ capture and utilization

Engineering the genetic components of a whole‐cell catalyst for improved enzymatic CO₂ capture and utilization

FAU zeolite membranes for dewatering of amine‐based post‐combustion CO₂ capture solutions

Enhancement of CO₂ Absorption in Water through pH Control and Carbonic Anhydrase–A Technical Assessment

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Laboratory to bench-scale evaluation of an integrated CO2 capture system using a thermostable carbonic anhydrase promoted K2CO3 solvent with low temperature vacuum stripping

Cited by 35 publications

References 40 publications

Engineering the genetic components of a whole‐cell catalyst for improved enzymatic CO2 capture and utilization

Engineering the genetic components of a whole‐cell catalyst for improved enzymatic CO2 capture and utilization

FAU zeolite membranes for dewatering of amine‐based post‐combustion CO2 capture solutions

Enhancement of CO2 Absorption in Water through pH Control and Carbonic Anhydrase–A Technical Assessment

Contact Info

Product

Resources

About

Engineering the genetic components of a whole‐cell catalyst for improved enzymatic CO₂ capture and utilization

Engineering the genetic components of a whole‐cell catalyst for improved enzymatic CO₂ capture and utilization

FAU zeolite membranes for dewatering of amine‐based post‐combustion CO₂ capture solutions

Enhancement of CO₂ Absorption in Water through pH Control and Carbonic Anhydrase–A Technical Assessment