Biocoatings: challenges to expanding the functionality of waterborne latex coatings by incorporating concentrated living microorganisms

Flickinger, Michael C.; Bernal, Oscar I.; Schulte, Mark J.; Broglie, Jessica Jenkins; Duran, Christopher J.; Wallace, Adam; Mooney, Charles; Velev, Orlin D.

doi:10.1007/s11998-017-9933-6

Cited by 27 publications

(37 citation statements)

References 45 publications

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“…The photo-efficiency of these microorganisms is low, thus there is a technology development need in this area to improve their efficiency. Some of the conventional intensification technologies shown in Table 1 can be deployed in conjunction with more novel techniques of cell immobilisation such as in biocomposites where highly concentrated, living but non-growing microorganisms are incorporated within the structure of either nonporous substrates (polyesters, metals) or non-woven porous substrates (papers) [65][66][67].…”

Section: Biochemical Capturementioning

confidence: 99%

Process intensification technologies for CO2 capture and conversion – a review

2020

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With the concentration of CO 2 in the atmosphere increasing beyond sustainable limits, much research is currently focused on developing solutions to mitigate this problem. Possible strategies involve sequestering the emitted CO 2 for long-term storage deep underground, and conversion of CO 2 into value-added products. Conventional processes for each of these solutions often have high-capital costs associated and kinetic limitations in different process steps. Additionally, CO 2 is thermodynamically a very stable molecule and difficult to activate. Despite such challenges, a number of methods for CO 2 capture and conversion have been investigated including absorption, photocatalysis, electrochemical and thermochemical methods. Conventional technologies employed in these processes often suffer from low selectivity and conversion, and lack energy efficiency. Therefore, suitable process intensification techniques based on equipment, material and process development strategies can play a key role at enabling the deployment of these processes. In this review paper, the cutting-edge intensification technologies being applied in CO 2 capture and conversion are reported and discussed, with the main focus on the chemical conversion methods.

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Section: Biochemical Capturementioning

confidence: 99%

Process intensification technologies for CO2 capture and conversion – a review

2020

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“…Polymer heterogeneity that contributes to film morphology and adhesion after drying in latex coatings is well studied by the waterborne coating industry [74,75]. However, the complex molecular interactions between heterogeneous polymer particle surface chemistry, water, surfactants, viscosity modifiers, osmoprotectant carbohydrate, and the complex surface of living cells during film formation and drying is only beginning to be explored by polymer emulsion chemists in order to alter coating functionality using biotechnology [76]. Furthermore, since carbohydrates such as sorbitol protect biological material, it is anticipated their application on coating mixture in order to increase long-term stabilization and preservation of many types of cells and biological materials in biocoatings.…”

Section: Mussel Adhesive Protein (Map)mentioning

confidence: 99%

“…Choice of latex polymer, polymer particle size and distribution, control and manipulation of drying and hydration conditions, and use of additives are among the means available to achieve this goal [73]. Biocoatings generated from a mixture of cell paste and an emulsion of pH adjusted non-toxic adhesive (deformable) latex binder emulsions, bimodal particle blends or core shell lattices can have engineered adhesion to a wide variety of surfaces [76]. Adhesion (to substrate, layer to layer) can be altered by polymer particle glass transition temperature (T g ), latex particle surface chemistry (charge, charge density, surface grafting of crosslinking agents), and the ratio of particle diameter to cell size and polymer particle to cell concentration in the coating emulsion ( Fig.…”

Section: Biocoating Microstructure and Polymer Chemistrymentioning

confidence: 99%

Biocoatings: A new challenge for environmental biotechnology

Cortez

Nicolau

Flickinger

et al. 2017

Biochemical Engineering Journal

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Adhesive biocatalytic coatings (biocoatings) have a nanoporous microstructure generated by partially coalesced waterborne polymer particles that entrap highly concentrated living cells in a dry state stabilized by carbohydrate osmo-protectants. Biocoatings can be deposited by high speed coating technologies, aerosol delivery or ink-jet printed in multilayered, patterned coatings on flexible nonporous or nonwoven substrates, preserving 10 10-10 12 non-growing viable microorganisms per m 2 in 2-50 m thick layers. Cells are rehydrated to restore their metabolism. The layers reactive half-life following rehydration can be 1000 s of hours. The planar structure of biocoatings enable uniform illumination of a high concentration of photo-reactive microorganisms or algae and contact these microbe with thin liquid films for efficient mass transfer. This review highlights recent advances in biocoating technology for pollutants degradation, photo-reactive coatings, stabilization of hyperthermophiles for biocatalysis, environmental biosensors, and biocomposite fuel cells. Engineering cells for desiccation tolerance, unveiling the metabolism of nongrowing cells, and engineering the interaction between the cell surface and adhesive polymer binders are fundamental challenges to open the door to vast future applications of biocoatings for environmental sensing and remediation.

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“…Previous literature reported methods for the chemical generation of positive charges on the cellulose microfibrils' surface (Stenstad et al 2008) that could create an electrostatic interaction between the bacterial surface and the fibers. Bernal et al (2017). "Paper to make H2 gas," BioResources 12(2), 4013-4030.…”

Section: Vacuum-dewatered Microbial Paper Filmsmentioning

confidence: 99%

“…Only the most superficial layers of the substrate are effectively utilized for immobilization of micron-sized cells, wasting most of the available internal pore space surface area. Flickinger et al (2017) recently reviewed the advantages regarding biocoating productivity and effectiveness. This intrinsic drawback can be overcome by developing methods that incorporate biomass during the early stages of substrate manufacturing rather than as a finishing treatment applied superficially to a pre-made immobilization matrix.…”

Section: Introductionmentioning

confidence: 99%

Microbial Paper: Cellulose Fiber-based Photo-Absorber Producing Hydrogen Gas from Acetate using Dry-Stabilized Rhodopseudomonas palustris

2017

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The microstructure and reactivity of a novel nonwoven cellulose fiber cellular biocomposite (microbial paper) was studied relative to long-term stabilization of potentially any microorganism. Cells were incorporated during the papermaking process as an integral component of a highly porous cellular biocomposite that can be dry stabilized. Hydrogen gas production from acetate via the activity of the nitrogenases in Rhodopseudomonas palustris CGA009, entrapped at a very high concentration, in hand-made microbial paper was sustained for > 1000 h at a rate of 4.0 ± 0.28 mmol H2/m 2 h -1 following rehydration. This rate is 2x and 10x greater than previously reported H2 production rates by Rps. palustris latex coatings that were dried on polyester and non-dried formulations applied to the surface of paper, respectively. By vacuumdewatering and controlled drying steps to the microbial papermaking process and incorporating blends of microfibrillar (MFC), softwood (SW), and hardwood (HW) cellulose fibers, microbial paper films were fabricated that produced H2 gas at 3.94 ± 1.07 mmol H 2 /m 2 h -1 and retain up to 60 mg/m -2 dry cell weight (DCW) of Rps. palustris. The MFC content appears to determine the final cell load and may affect gas/moisture mass transfer properties of the biocomposite.

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Biocoatings: challenges to expanding the functionality of waterborne latex coatings by incorporating concentrated living microorganisms

Cited by 27 publications

References 45 publications

Process intensification technologies for CO2 capture and conversion – a review

Process intensification technologies for CO2 capture and conversion – a review

Biocoatings: A new challenge for environmental biotechnology

Microbial Paper: Cellulose Fiber-based Photo-Absorber Producing Hydrogen Gas from Acetate using Dry-Stabilized Rhodopseudomonas palustris

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