State-of-the-art on geotechnical engineering perspective on bio-mediated processes

Shashank, B. S.; Sharma, Susmita; Sowmya, S; Latha, R. Asha; Meenu, P. S.; Singh, Devendrá

doi:10.1007/s12665-015-5071-6

Cited by 28 publications

(14 citation statements)

References 117 publications

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“…Over recent years, researchers have investigated various bio-mediated techniques for soil improvement such as biocementation, bioclogging, bioremediation, and phytoremediation (Shashank et al 2016). Biocementation or MICP provide a great opportunity to alter the engineering properties of soil.…”

Section: Soil Strengthening and Sand Consolidationmentioning

confidence: 99%

Microbially induced calcium carbonate precipitation: a widespread phenomenon in the biological world

Seifan

Berenjian

2019

Appl Microbiol Biotechnol

158

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Bio-deposition of minerals is a widespread phenomenon in the biological world and is mediated by bacteria, fungi, protists, and plants. Calcium carbonate is one of those minerals that naturally precipitates as a by-product of microbial metabolic activities. Over recent years, microbially induced calcium carbonate precipitation (MICP) has been proposed as a potent solution to address many environmental and engineering issues. However, for being a viable alternative to conventional techniques as well as being financially and industrially competitive, various challenges need to be overcome. In this review, the detailed metabolic pathways, including ammonification of amino acids, dissimilatory reduction of nitrate, and urea degradation (ureolysis), along with the potent bacteria and the favorable conditions for precipitation of calcium carbonate, are explained. Moreover, this review highlights the potential environmental and engineering applications of MICP, including restoration of stones and concrete, improvement of soil properties, sand consolidation, bioremediation of contaminants, and carbon dioxide sequestration. The key research and development questions necessary for near future large-scale applications of this innovative technology are also discussed.

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Section: Soil Strengthening and Sand Consolidationmentioning

confidence: 99%

Microbially induced calcium carbonate precipitation: a widespread phenomenon in the biological world

Seifan

Berenjian

2019

Appl Microbiol Biotechnol

158

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“…Other themes including the enhancement of soil properties and optimization studies at the laboratory scale were also explored by different research groups. Ultimately, MICP research aims at implementing and upscaling the technique for a range of proposed soil improvement applications in geotechnical, geological and geoenvironmental engineering, including liquefaction control, fugitive dust mitigation, permeability reduction, slope surface stabilization and so on (Shashank et al., ). While substantial progress has been made in the past decade in developing MICP as a promising soil improvement technique, we need a more profound understanding of its fundamentals, multi‐functionality and sustainability to realize the adoption of MICP as a mainstream technology (Figure ).…”

Section: Introductionmentioning

confidence: 99%

Bio‐mediated soil improvement: The way forward

Jiang

Tang

Hata

et al. 2020

Soil Use and Management

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Bio‐mediated soil improvement involves the usage of microbes to improve soil engineering performance through a series of bio‐geochemical processes. In particular, Microbially Induced Calcite Precipitation (MICP), a ubiquitous bio‐geochemical process that occurs in soil and results in permanent inorganic cementation between soil grains, has received the greatest research focus. While substantial progress has been made to develop MICP as a mainstream soil improvement technique, we still need to: (a) improve our understanding of the fundamental microbial, chemical and flow processes involved; (b) achieve multi‐functionality by coupling engineering performance enhancement with ecological, environmental and carbon footprint benefits; and (c) maintain ecological balance and environmental friendliness, avoid long‐term deterioration and lower the energy demand.

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“…To add to this list of woes, which makes this situation more complex, but realistic, the microbial (bacterial, fungal, pathogenic, viral and algal) activities pose a major threat to the geoenvironment. Incidentally, the author, a geotechnical engineer who as a student was averse to biology, was induced to take up this challenge by biosavvy and enthusiastic young researchers [106,[164][165][166][167]190]. Another challenge being faced, in this context, is the multi-phase state of geomaterials, which makes it not-so-easy task to simulate and monitor the influence of contaminants on geomaterials and the mechanisms prevailing in them [26,72,73].…”

Section: Introductionmentioning

confidence: 99%

Novel Techniques to Simulate and Monitor Contaminant–Geomaterial Interactions

Singh

2019

Indian Geotech J

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Generation of huge amount of the toxic and hazardous wastes coming out of various industrial and domestic activities is becoming a major threat to the society. In the long run, mainly because of nonscientific storage, disposal and closure, and due to the presence of undesirable concentration(s) of chemicals and radionuclides, elevated temperatures and microbial activity, these wastes (read contaminants) interact with geomaterials, viz., soils, rock mass, groundwater. This interaction, termed as contaminant-geomaterial interaction, depending upon the severity of the contaminant(s) and interaction time, might alter overall characteristics of the geomaterials. Unfortunately, conventional laboratory and field instrumentation techniques are not well equipped to capture such interaction(s) and the mechanisms that prevail in the geomaterials. Hence, to achieve these objectives, evolving adequate and workable strategies, and modalities, that are nondestructive, noninvasive and economical is desirable. In this context, author's association with several industries resulted in development of innovative, cost-effective, yet efficient techniques that facilitate laboratory and/or in situ simulation and monitoring of such interaction(s). Details of these techniques, the philosophy behind their creation and the way they can be employed for safeguarding geoenvironment, from deterioration, are presented and discussed in this paper. Also, a brief discussion on some of the real-life situations where such techniques can be applied easily, by suitably modifying them, is presented for the benefit of the aspiring researchers and professionals.

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State-of-the-art on geotechnical engineering perspective on bio-mediated processes

Cited by 28 publications

References 117 publications

Microbially induced calcium carbonate precipitation: a widespread phenomenon in the biological world

Microbially induced calcium carbonate precipitation: a widespread phenomenon in the biological world

Bio‐mediated soil improvement: The way forward

Novel Techniques to Simulate and Monitor Contaminant–Geomaterial Interactions

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