Composite material for thermal insulation based on moss raw material

Бакатович, А. А.; Gaspar, Florindo

doi:10.1016/j.conbuildmat.2019.116699

Cited by 48 publications

(34 citation statements)

References 23 publications

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“…A critical step for phycocyanin extraction is the cell membrane disruption step, which, when incomplete, can affect phycocyanin recovery (Stewart and Farmer, 1984). The thermal insulation properties of the moss (Bakatovich and Gaspar, 2019), for example, could prevent an efficient cyanobacteria cell wall disruption. Moreover, we found significantly lower apparent recoveries for cyanobacteria cells addition compared to phycocyanin standard addition (Table 2) suggesting that cyanobacteria cellular structures can impact phycocyanin extraction.…”

Section: Phycocyanin Extraction Methods Characterization and Validationmentioning

confidence: 99%

Quantification of Moss-Associated Cyanobacteria Using Phycocyanin Pigment Extraction

2021

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In the boreal forest, cyanobacteria can establish associations with feather moss and realize the biological nitrogen fixation (BNF) reaction, consisting in the reduction of atmospheric dinitrogen into bioavailable ammonium. In this ecosystem, moss-associated cyanobacteria are the main contributors to BNF by contributing up to 50% of new N input. Current environmental changes driven by anthropogenic activities will likely affect cyanobacteria activity (i.e., BNF) and populations inhabiting mosses, leading to potential important consequences for the boreal forest. Several methods are available to efficiently measure BNF activity, but quantifying cyanobacteria biomass associated with moss is challenging because of the difficulty to separate bacteria colonies from the host plant. Attempts to separate cyanobacteria by shaking or sonicating in water were shown to be poorly efficient and repeatable. The techniques commonly used, microscopic counting and quantitative PCR (qPCR) are laborious and time-consuming. In aquatic and marine ecosystems, phycocyanin (PC), a photosynthesis pigment produced by cyanobacteria, is commonly used to monitor cyanobacteria biomass. In this study, we tested if PC extraction and quantification can be used to estimate cyanobacteria quantity inhabiting moss. We report that phycocyanin can be easily extracted from moss by freeze/thaw disturbance of cyanobacteria cells and can be quickly and efficiently measured by spectrofluorometry. We also report that phycocyanin extraction is efficient (high recovery), repeatable (relative SD < 13%) and that no significant matrix effects were observed. As for aquatic systems, the main limitation of cyanobacteria quantification using phycocyanin is the difference of cellular phycocyanin content between cyanobacteria strains, suggesting that quantification can be impacted by cyanobacteria community composition. Nonetheless, we conclude that phycocyanin extraction and quantification is an easy, rapid, and efficient tool to estimate moss-associated cyanobacteria number.

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Section: Phycocyanin Extraction Methods Characterization and Validationmentioning

confidence: 99%

Quantification of Moss-Associated Cyanobacteria Using Phycocyanin Pigment Extraction

2021

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“…Other researchers expanded the research by investigating the impact of adding other agro-wastes to the cement/straw composites. For instance, Bakatovich and Gaspar [48] investigated the use of Sphagnum moss as a fiber in thermal insulation panels. In the study, several compositions were developed for thermal insulation boards based on rye straw, reed, and moss, while using liquid glass binder.…”

Section: Insulation Materials For Buildingsmentioning

confidence: 99%

Production of Sustainable Construction Materials Using Agro-Wastes

Maraveas

2020

Materials

152

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The construction sector, in modern times, is faced by a myriad of challenges primarily due to the increase in the urban population and dwindling natural resources that facilitate the production of construction materials. Furthermore, higher awareness on climate change is forcing companies to rethink their strategies in developing more sustainable construction materials. Diverse types of agro-waste ranging from rice husk ash (RHA), sugarcane bagasse ash (SCBA), and bamboo leaves ash (BLA) among others have been identified as potent solutions in the development of sustainable construction materials. In this review paper, six different construction materials, made using agro-waste products, are examined. The materials include brick/masonry elements, green concrete, insulation materials for buildings, reinforcement materials for buildings, particleboards, and bio-based plastics. The main criterion adopted in selecting the materials regards their popularity and wide-scale use in modern construction applications. Additionally, as this research emphasizes identifying alternative approaches to develop sustainable construction materials, the focus is directed toward mainstream materials whose continued use has an adverse impact on the environment. The findings obtained from the review showed that the use of agro-waste to develop sustainable construction materials was effective, as the developed materials adhered to established building standards. Therefore, this indicates that agro-waste materials have the potential to replace conventional construction materials and hence achieve economic, environmental, and social sustainability in the long run.

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“…open ended straw, such as trimmed straw, will equilibrate faster than closed ended straw, such as folded straw, as described by Yin et al [39]. Studies of the straw fibers in straw bale have shown two distinct layers of cell structures in straw samples [20,44,47,48]: an outer layer with denser and smaller capillaries and an inner layer with porous and larger capillaries with thinner cell walls. In studies by Vejeliene et al [20] and Bakatovich et al [47], after applying loads on the straw samples, the outer layers of the cells were fragmented, while the inner layer was deformed.…”

Section: Hygroscopic Sorption Properties Moisture Content and Water Absorptionmentioning

confidence: 97%

A review of material properties and performance of straw bale as building material

Koh

Kraniotis

2020

Construction and Building Materials

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Composite material for thermal insulation based on moss raw material

Cited by 48 publications

References 23 publications

Quantification of Moss-Associated Cyanobacteria Using Phycocyanin Pigment Extraction

Quantification of Moss-Associated Cyanobacteria Using Phycocyanin Pigment Extraction

Production of Sustainable Construction Materials Using Agro-Wastes

A review of material properties and performance of straw bale as building material

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