Study on the Effect of Different Reinforcement Processes on Microbial Induced Carbonate Precipitation

2021 ◽  
Vol 10 (01) ◽  
pp. 74-80
Author(s):  
亚清 牟
Keyword(s):  
Carbonate Precipitation

Efficiency of Carbonate Precipitation and Removal of Copper and Nickel Ions from their Monocomponent and Two-component Aqueous Solutions

2019 ◽  
Author(s):  
Halid Junuzović ◽  
Sabina Begić ◽  
Amra Selimović ◽  
Abdel Đozić ◽  
Ramzija Cvrk ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Carbonate Precipitation ◽  
Nickel Ions ◽  
Two Component

Improvement of Concrete Durability by Bacterial Carbonate Precipitation

2015 ◽  
Vol 1 (2) ◽  
pp. 90 ◽  
Author(s):  
Hariharan Harikrishnan ◽  
Shine Kadaikunnan ◽  
Innasimuthu Ganesh Moorthy ◽  
Alexander Ronaldo Anuf ◽  
Karuppiah Ponmurugan ◽  
...  
Keyword(s):  
Carbonate Precipitation ◽  
Concrete Durability

SOURCES OF CARBONATE PRECIPITATION IN MONO LAKE SEDIMENTS: δ18O AND CARBONATE CLUMPED ISOTOPES AS LAKE LEVEL PROXIES

2017 ◽  
Author(s):  
Miquela Ingalls ◽  
◽  
Sophie Westacott ◽  
Makayla Betts ◽  
Jana Meixnerova ◽  
...  
Keyword(s):  
Lake Sediments ◽  
Lake Level ◽  
Mono Lake ◽  
Carbonate Precipitation ◽  
Clumped Isotopes

scholarly journals Density-dependent microbial calcium carbonate precipitation by drinking water bacteria via amino acid metabolism and biosorption

2021 ◽  
pp. 117444
Author(s):  
Xiaoxia Liu ◽  
Gernot Zarfel ◽  
Renata van der Weijden ◽  
Willibald Loiskandl ◽  
Brigitte Bitschnau ◽  
...  
Keyword(s):  
Drinking Water ◽  
Amino Acid ◽  
Calcium Carbonate ◽  
Amino Acid Metabolism ◽  
Acid Metabolism ◽  
Carbonate Precipitation ◽  
Calcium Carbonate Precipitation ◽  
Density Dependent

scholarly journals The role of bacterial urease activity on the uniformity of carbonate precipitation profiles of bio-treated coarse sand specimens

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Charalampos Konstantinou ◽  
Yuze Wang ◽  
Giovanna Biscontin ◽  
Kenichi Soga
Keyword(s):  
Calcium Carbonate ◽  
Calcium Chloride ◽  
Urease Activity ◽  
Coarse Sand ◽  
Carbonate Precipitation ◽  
Population Densities ◽  
Carbonate Cements ◽  
Microbially Induced Carbonate Precipitation

AbstractProtocols for microbially induced carbonate precipitation (MICP) have been extensively studied in the literature to optimise the process with regard to the amount of injected chemicals, the ratio of urea to calcium chloride, the method of injection and injection intervals, and the population of the bacteria, usually using fine- to medium-grained poorly graded sands. This study assesses the effect of varying urease activities, which have not been studied systematically, and population densities of the bacteria on the uniformity of cementation in very coarse sands (considered poor candidates for treatment). A procedure for producing bacteria with the desired urease activities was developed and qPCR tests were conducted to measure the counts of the RNA of the Ure-C genes. Sand biocementaton experiments followed, showing that slower rates of MICP reactions promote more effective and uniform cementation. Lowering urease activity, in particular, results in progressively more uniformly cemented samples and it is proven to be effective enough when its value is less than 10 mmol/L/h. The work presented highlights the importance of urease activity in controlling the quality and quantity of calcium carbonate cements.

Enhanced rainfall erosion durability of enzymatically induced carbonate precipitation for dust control

2021 ◽  
pp. 148369
Author(s):  
Xiaohao Sun ◽  
Linchang Miao ◽  
Hengxing Wang ◽  
Junhao Yuan ◽  
Guangcai Fan
Keyword(s):  
Dust Control ◽  
Carbonate Precipitation ◽  
Rainfall Erosion
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