US20110179703A1 - Biomass to biochar conversion in

The present invention relates to a method for conversion of biomass to biochar in subcritical water at 230-350° C. and 500-3000 psi. Under subcritical water conditions, biomass readily converts into biochar, biocrude, and some gases. In this invention, yield of biochar is significantly improved by recycling of biocrude. The process can produce hydrophobic biochar that has at least 70 wt

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Niki Evelpidou | National & Kapodistrian University of

To protect coastal erosion, an innovative and sustainable strategy was proposed in this study by means of com geotube and the MICP method. For a successful sand solidification, the urease activity, environmental factors, urease distribution, and calcite precipitation trend, among others, have been investigated using the isolated native strains.

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Solved] Content and Development 8 Points Points X/8

Biocementation of loose sand using a MICP process to increase the liquefaction resistance of sand has also been reported by DeJong et al. (2006), Montoya et al. ( ). It was shown (Montoya et al. ) that the resistance of sand to liquefaction, as measured by a decrease in the excess pore water pressure ratio, was significantly increased

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Evaluation of the Ability to Control Biological

Finally, using biological precipitation, the unconfined compressive strength of poorly graded sandy soil^ was increased up to range 100-400 kPa after treatment. This amount of unconfined strength is in satisfied range for most of ground improvement projects such as mitigation of liquefaction risk (Port and Harbour Research Institute, 1997). 5.

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US Patent for Compositions, tools and methods for the

Methods for producing construction material utilizing loose pieces of aggregate (30), enzyme producing cells, an amount of urea and an amount of calcium ions. A first solution is prepared which includes urease which is formed by enzyme producing cells. A second solution is prepared which includes urea and calcium ions. The first and second solutions are added to the loose aggregate (30).

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Frontiers | Microbial and Geochemical Dynamics of an

Microbially induced calcite precipitation (MICP) is an alternative to existing soil stabilization techniques for construction and erosion. As with any biologically induced process in soils or aquifers, it is important to track changes in the microbial communities that occur as a result of the treatment. Our research assessed how native microbial communities developed in response to injections

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PDF Towards the Development of Sustainable Ground Improvement

sands [20], thus potentially low success of the technique. The few research works studying the biocementation potential of organic soils include Canakci et al. [22, 23], who performed a feasibility study of biocementation of an organic soil from Sakarya region, Turkey, using a S. pasteurii strain. The two papers reported up to 16% and 20% CaCO

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Items where Research Area is "A. > School of Science and

Popoola, Solomon ( ) Enhanced vermiremediation of hydrocarbon contaminated land using biosurfactant: an integrated approach. PhD thesis, Middlesex University. [Thesis]

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Poster Authors and Abstracts | CSU

Using this model as a platform, we will next study the leukocytes trafficking during respiratory infection and model the lung specialized endothelium and tissue repair in the presence of Tregs cells. We anticipate that this study will contribute important information about lung injury during pathogenic infection that may lead to faster tissue repairs and recovery from whooping cough.

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calcium carbonate precipitation for soil treatment

The maximum UCS of MICP treated sand column at 10 ˚C was 223 kPa, 2.35 times that at 30 ˚C which was 95 kPa. 3.5 CaCO3 content in MICP sand column experiments The CaCO3 content of each MICP treated sand column samples was determined according to the method of 1.7. Fig 10 shows the CaCO3 content in sand column samples after 6-20 times

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Xianming Shi, PhD, PE, F. ASCE - Chair - Washington State

View Xianming Shi, PhD, PE, F. ASCE'S profile on , the world's largest professional community. Xianming has 17 jobs listed on their profile. See the complete profile on and

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Aamir Mahawish - Teaching Associate - Monash University

A multi-phase biochemical treatment strategy was used to obtain a partial biocementation, in particular at the upper section of the sand column where bulging usually occurs. The results show that the partially bio-cemented sand column substantially reduced vertical strains which were in the order of 71% and 97% compared with un-cemented sand column and kaolin clay, respectively.

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USAFA Cadet Summer Program returns to Tyndall AFB > U.S

With aspirations of becoming an Air Force pilot after graduation, C2C Madi Hirsch took particular interest in the runway treatment research using biocementation — the process of taking a sandy soil, like that typically found in Florida, and treating it with an organism and specific chemicals that allow the bacteria to produce a material that hardens the soil and ultimately acts as a soil

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Scientific Publications

Improvement of using crude extract urease from watermelon seeds for biocementation technology. International Journal of Geomate, 20, 142-147. 308. Evelpidou N., Karkani A., Kampolis I., 2021. Relative sea level changes and morphotectonic implications triggered by the Samos earthquake of 30th October 2020.

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B. 1/0. CEMENT by Bio-cement (Urban Morphogenesis Lab

B. 1/0. CEMENT Research aided by Geo-mophic process and Bio-technological intelligence, seeking to explore the Organization and Construction of an Urban fabric within the Liwa Oasis in the UAE

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Verweise | Geotechnical Engineering Properties of Soils

Safavizadeh Shahin ( ), "Microbial induced calcium carbonate precipitation in coal ash" in Géotechnique, v. 69, n. 8, Thomas Telford Ltd., p. 727-740

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Public Staff Profile | Curtin University, Perth, Australia

Significant indicators for Biomineralisation in sand of varying grain sizes. Journal of Construction and Building Materials 104: 198-207. Kaur G, Dhami NK, Mukherjee A, Reddy MS ( ). Utilisation of carbon dioxide as an alternative to urea in biocementation. Journal of Construction and Building Materials.

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Effects of Bio-cementation on Strength Parameters of Silty

Biocementation, or microbially induced calcite precipitation (MICP), is a technique currently appraised for the improvement of sandy soils.

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Feasibility Study of Native Ureolytic Bacteria for

To protect coastal erosion, an innovative and sustainable strategy was proposed in this study by means of com geotube and the MICP method. For a successful sand solidification, the urease activity, environmental factors, urease distribution, and calcite precipitation trend, among others, have been investigated using the isolated native strains.

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Bioresource Technology Journal Impact IF 2020

Use. The impact factor is used to compare different journals within a certain field. The Web of Science indexes more than 11,500 science and social science journals. Journal impact factors are often used to evaluate the merit of individual articles and individual researchers. This use of impact factors was summarised by Hoeffel:

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Performance of microbial-induced carbonate precipitation

native vegetation cannot supply sufficient residues for wind erosion control. The potential application of MICP reduc-ing wind erosion of a sandy soil was studied using Spor-sarcina pasteurii. A wind tunnel experiment was adopted to study the effectiveness of MICP process in controlling wind erosion. Then, the penetration resistance of the bio-

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