Used Paper Fibers for Sustainably Enhancing the MICP Stabilization of Sand

Chen, Meiqi; Gowthaman, Sivakumar; Nakashima, Kazunori; Komatsu, Shin; Kawasaki, Satoru

doi:10.1007/978-3-030-80152-6_5

Cited by 5 publications

(4 citation statements)

References 21 publications

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“…What can be seen in this figure is that the Lederbergia species in this study is comparable in bonding efficiency to that of S. pasteurii, which is a remarkable outcome that confirms the applicability of these two strains. What was found in our previous sand column solidification tests under the same experimental conditions (bacterial urease activity 3.5 U/mL) is that the bacterial performance began to decrease significantly after 5 days, leading to a relatively low calcium carbonate content and weak cementation effect (Chen et al, 2021). Although the bacteria showed similar urease activity under urease test condition, their performances in sand column solidification tests differ.…”

Section: Discussionsupporting

confidence: 46%

“…The CaCO 3 content, as one of the most important factors that evaluate the MICP efficiency, was measured as the gas pressure produced when samples react with acids using a device developed by Fukue et al (1999). Details were described in the previous study (Chen et al, 2021). Oven-dried samples were then observed under Miniscope TM 3000 (Hitachi, Tokyo, Japan) and the X-ray diffraction pattern was analyzed using MultiFlex (Rigaku Co., Ltd., Tokyo, Japan) to demonstrate the polymorphs of induced CaCO 3 .…”

Section: Sand Solidification Test and Evaluationsmentioning

confidence: 99%

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Baseline investigation on soil solidification through biocementation using airborne bacteria

Chen

Gowthaman

Nakashima

et al. 2023

Front. Bioeng. Biotechnol.

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Microbial induced carbonate precipitation (MICP) through the ureolysis metabolic pathway is one of the most studied topics in biocementation due to its high efficiency. Although excellent outcomes have proved the potential of this technique, microorganisms face some obstacles when considering complicated situations in the real field, such as bacterial adaptability and survivability issues. This study made the first attempt to seek solutions to this issue from the air, exploring ureolytic airborne bacteria with resilient features to find a solution to survivability issues. Samples were collected using an air sampler in Sapporo, Hokkaido, a cold region where sampling sites were mostly covered with dense vegetation. After two rounds of screening, 12 out of 57 urease-positive isolates were identified through 16S rRNA gene analysis. Four potentially selected strains were then evaluated in terms of growth pattern and activity changes within a range of temperatures (15°C–35°C). The results from sand solidification tests using two Lederbergia strains with the best performance among the isolates showed an improvement in unconfined compressive strength up to 4–8 MPa after treatment, indicating a high MICP efficiency. Overall, this baseline study demonstrated that the air could be an ideal isolation source for ureolytic bacteria and laid a new pathway for MICP applications. More investigations on the performance of airborne bacteria under changeable environments may be required to further examine their survivability and adaptability.

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Section: Discussionsupporting

confidence: 46%

Section: Sand Solidification Test and Evaluationsmentioning

confidence: 99%

Baseline investigation on soil solidification through biocementation using airborne bacteria

Chen

Gowthaman

Nakashima

et al. 2023

Front. Bioeng. Biotechnol.

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“…The high fiber content in the peat of Bereng Bengkel Village, Palangkaraya is caused by the anaerobic or low oxygen condition of the peat environment (Chen et al, 2021). This condition inhibits the activity of decomposer microorganisms to break down organic materials such as leaves, twigs, and roots completely (Takada et al, 2016).…”

Section: Finding and Discussionmentioning

confidence: 99%

Bacteria Pseudomonas taiwanensis as a decomposing agent of peat fiber

Gulo,

Amalia,

Mase

et al. 2023

J. Edubiotik

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Efforts are needed to accelerate the decomposition of peat fiber to reduce the fiber content through bioaugmentation using Pseudomonas taiwanensis bacteria so that it can reduce the high-water content of peat fiber. The research aimed to determine the effect of adding Pseudomonas taiwanensis bacteria on the decomposition of peat fiber. This research is a laboratory experimental research. The research sampling location was in Bereng Bengkel Village, Palangkaraya. The parameters observed included fiber content, fiber size distribution, and peat fiber decomposition speed following the Peat Testing Manual. The research instrument was an observation sheet for fiber content, size distribution, and peat fiber decomposition speed. Research data was analyzed using descriptive statistical analysis. The results showed that adding 15% Pseudomonas taiwanensis bacteria with a curing period of 28 days in fibrous peat resulted in the highest reduction in fiber content, from the initial condition of 61.14% to 12.33%. This variation also shows a decrease in coarse and medium fiber content and a significant increase in fine fiber content. The decomposition rate for this variation shows good consistency. The conclusion was that adding 15% Pseudomonas taiwanensis bacteria with a curing period of 28 days showed optimal results in accelerating the decomposition of peat fiber through the bioaugmentation method.

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“…Yet, designers and researchers have further expanded the material possibilities by employing MICP beyond the creation of bulk bio-concrete materials, such as substrates sourced from waste stream (Streich, n.d.), polymer lattice (Xin et al, 2021) or the stiffening of textile geometries (Beyer et al, 2019;Mosse et al, 2024). To our knowledge, paper has only been used so far in biocalcification processes as an additive facilitating the calcification of quartz sands (Chen et al, 2021).…”

Section: Biocalcification In Engineering and Designmentioning

confidence: 99%

Paper waste grown as a biocalcified foam: perspectives from a bacterial and design viewpoint

Mosse,

Rennie,

Poudoulec

et al. 2024

Res. dir. Biotechnol. des.

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Biocalcification is a naturally occurring mineralisation phenomenon resulting from the urease produced by microorganisms inhabiting soil environments. This process, often referred to as microbially induced calcite precipitation (MICP), is primarily exploited in an engineering context for soil stabilization and the repair of concrete structures. MICP represents an emerging area of research in architecture and design. In this paper, we discuss the appropriation of MICP on Papier Plume, a foam made of paper waste used in the context of ImpressioVivo: a design-led research project exploring the conception and fabrication of 3D-printed and bacterially-induced bio-sourced materials for a circular design framework. In the light of a previous study based on two strategies of calcification: (1) direct inoculation (2) spraying, we - a team of two designers and a microbiologist- discuss the relevance of an immersion strategy applied to the dry paper foam substrate. By doing so, we reflect on the relevance of MICP as a material design process underpinned by sustainable and circularity concerns, from a design perspective, but also into an attempt to embrace the perspective of the bacteria supporting these experiments; namely Sporosarcina pasteurii.

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Used Paper Fibers for Sustainably Enhancing the MICP Stabilization of Sand

Cited by 5 publications

References 21 publications

Baseline investigation on soil solidification through biocementation using airborne bacteria

Baseline investigation on soil solidification through biocementation using airborne bacteria

Bacteria Pseudomonas taiwanensis as a decomposing agent of peat fiber

Paper waste grown as a biocalcified foam: perspectives from a bacterial and design viewpoint

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