Prevention of Calcium Carbonate Precipitation From Calcium Chloride Kill Fluid in CO2-Laden Formations

1984 ◽  
Author(s):  
M.S. Kapelke ◽  
E.P. Caballero
Keyword(s):  
Calcium Carbonate ◽  
Calcium Chloride ◽  
Carbonate Precipitation ◽  
Calcium Carbonate Precipitation

Effect of Temperature on Calcium Carbonate Precipitation in Biomimetic Calcium Chloride Solution

2021 ◽  
Vol 107 ◽  
pp. 76-81
Author(s):  
Intan Nurfarzana Mohd Razib Fatheen ◽  
Che Husain Syuhani ◽  
Hamzah Fazlena ◽  
Najwa Mohd Rodhi Miradatul ◽  
Veny Harumi
Keyword(s):  
Calcium Carbonate ◽  
Calcium Chloride ◽  
Chloride Solution ◽  
Calcium Chloride Solution ◽  
Effect Of Temperature ◽  
Precipitation Process ◽  
Carbonate Precipitation ◽  
Calcium Carbonate Precipitation ◽  
Calcium Carbonate Precipitate ◽  
Temperature Range

In the present work, the effect of temperature on calcium carbonate precipitation in the biomimetic calcium chloride solution was investigated. A spontaneous calcium carbonate precipitate was formed in the biomimetic calcium chloride solution as a result of the carbon dioxide hydration process. The reaction was conducted at different temperature range vary from 30°C to 100°C. The mass of the calcium carbonate precipitate and the pH solution was measured in the study. The finding indicated that an increment of the temperature has led to the fast pH reduction of the solutions to 7.0. However, the process has retarded the calcium carbonate precipitation process. The optimum temperature for higher calcium carbonate precipitation has occurred at the temperature range of 47.5°C – 65°C which gave the highest calcium carbonate precipitate at 0.121g. The addition of Tris buffer into the calcium chloride solution in this study did not gave an inhibition effect on the calcium carbonate precipitate. Based on the results, an operating condition at 47.5°C – 65°C was recommended to be used in mineral carbonization of CO2 using the biomimetic calcium chloride solution.

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.

Ureolysis-induced calcium carbonate precipitation (UICP) in the presence of CO2-affected brine: A field demonstration

2021 ◽  
Vol 109 ◽  
pp. 103391
Author(s):  
Catherine M. Kirkland ◽  
Arda Akyel ◽  
Randy Hiebert ◽  
Jay McCloskey ◽  
Jim Kirksey ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Carbonate Precipitation ◽  
Calcium Carbonate Precipitation
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