scholarly journals Particle triggered reactions as an important mechanism of alkalinity and inorganic carbon removal in river plumes

2021 ◽  
Author(s):  
E. Wurgaft ◽  
Z.A. Wang ◽  
J. H. Churchill ◽  
T. Dellapenna ◽  
S. Song ◽  
...  
Keyword(s):  
Inorganic Carbon ◽  
River Plumes ◽  
Carbon Removal ◽  
Triggered Reactions

scholarly journals Inorganic carbon removal and isotopic enrichment in Antarctic sea ice gap layers during early austral summer

2009 ◽  
Vol 386 ◽  
pp. 15-27 ◽  
Author(s):  
S Papadimitriou ◽  
DN Thomas ◽  
H Kennedy ◽  
H Kuosa ◽  
GS Dieckmann
Keyword(s):  
Sea Ice ◽  
Inorganic Carbon ◽  
Austral Summer ◽  
Isotopic Enrichment ◽  
Carbon Removal ◽  
Antarctic Sea Ice

Scaling risk assessment in a closed circuit recycled board mill by speciation methods

TAPPI Journal ◽  
2012 ◽  
Vol 11 (5) ◽  
pp. 53-61 ◽  
Author(s):  
PATRICK HUBER ◽  
SYLVIE NIVELON ◽  
PATRICE NORTIER
Keyword(s):  
Calcium Carbonate ◽  
Volatile Fatty Acids ◽  
Inorganic Carbon ◽  
Stability Index ◽  
Closed Circuit ◽  
Critical Problem ◽  
Local Scaling ◽  
Water Analyses ◽  
Closed Water ◽  
Speciation Calculation

Calcium carbonate scaling often is a critical problem for recycled board mills that have closed water circuits. The objective of this study was to determine local scaling risks throughout the production process. To predict scaling potential, we calculated several saturation indexes, based on speciation determined from detailed water analyses. Calculated scaling trends are in accordance with observed dissolution and precipitation of calcium carbonate in the process, when considering local aeration phenomena. The importance of volatile fatty acids (resulting from anaerobic bacterial activity) in calco-carbonic equilibriums is discussed, and taken into account in the speciation calculation. We also demonstrate the need to measure inorganic carbon instead of alkalinity in such conditions. This makes typical scaling indexes, such as the Ryznar Stability Index, irrelevant to predict scaling risk in closed circuit conditions; thus, it is necessary to use general speciation methods, as described in this paper.

The inorganic carbon cycle

2005 ◽  
Vol 33 (1) ◽  
pp. 9-12
Author(s):  
György Várallyay
Keyword(s):  
Carbon Cycle ◽  
Inorganic Carbon ◽  
Inorganic Carbon Cycle
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