scholarly journals Effect of Elevated Carbon Dioxide on Two Scleractinian Corals:Porites cylindrica(Dana, 1846) andGalaxea fascicularis(Linnaeus, 1767)

2009 ◽  
Vol 2009 ◽  
pp. 1-7 ◽  
Author(s):  
Yii-Siang Hii ◽  
Abol Munafi Ambok Bolong ◽  
Teng-Teng Yang ◽  
Hock-Chark Liew
Keyword(s):  
Carbon Dioxide ◽  
Calcium Carbonate ◽  
Species Diversity ◽  
Coral Reefs ◽  
Mitotic Index ◽  
Cell Density ◽  
Photosynthetic Pigments ◽  
Carbonate Precipitation ◽  
Calcium Carbonate Precipitation ◽  
Precipitation Increase

This study reveals the effect of elevatedpCO2onPorites cylindricaandGalaxea fascicularis. The corals responded differently under elevatedpCO2. Zooxanthellae cell density, cell mitotic index, and photosynthesis rate ofP. cylindricadecreased drastically under the elevatedpCO2. At the end of the experiment,P. cylindricasuffered from a declining calcium carbonate precipitation rate.G. fascicularisincreased its respiration rate and expelled 71% of its symbiotic zooxanthellae algae under elevatedpCO2. Photosynthetic pigments in the remaining zooxanthellae algae increased from 1.85 to 11.5 times to sustain its photosynthetic outputs. At the end of the experiment,G. fascicularismanaged to increase the rate of its calcium carbonate precipitation. IncreasepCO2in the atmosphere may affect species diversity of coral reefs.

scholarly journals Utilization of Gaseous Carbon Dioxide and Industrial Ca-Rich Waste for Calcium Carbonate Precipitation: A Review

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6239
Author(s):  
Natalia Czaplicka ◽  
Donata Konopacka-Łyskawa
Keyword(s):  
Carbon Dioxide ◽  
Calcium Carbonate ◽  
Precipitation Process ◽  
Steelmaking Slag ◽  
Carbonate Precipitation ◽  
Calcium Carbonate Precipitation ◽  
Waste Streams ◽  
Gaseous Carbon Dioxide ◽  
Implementation Problems ◽  
Available Information

Technologies for the management of various types of waste and the production of useful products from them are currently widely studied. Both carbon dioxide and calcium-rich waste from various production processes are problematic wastes that can be used to produce calcium carbonate. Therefore, the purpose of this paper is to provide an overview about the state of the development of processes that use these two wastes to obtain a valuable CaCO3 powder. The paper reviews the current research on the use of post-distillation liquid from the Solvay process, steelmaking slag, concrete, cement, and gypsum waste as well as some others industrial Ca-rich waste streams in the calcium carbonate precipitation process via carbonation route. This work is an attempt to collect the available information on the possibility of influencing the characteristics of the obtained calcium carbonate. It also indicates the possible limitations and implementation problems of the proposed technologies.

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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