Calcium carbonate (CaCO) minerals secreted by marine organisms are abundant in the ocean. These particles settle and the majority dissolves in deeper waters or at the seafloor. Dissolution of carbonates buffers the ocean, but the vertical and regional distribution and magnitude of dissolution are ...
Dissolution kinetics of calcium carbonate in sea water; I, A kinetic origin for the lysocline The structure of polycrystalline ZnS produced by self-propagating high-temperature synthesis is investigated. The monolithic specimens produced are a mixtu... JW Morse,RA Berner - 《American Journal of Sc...
An overview is given of the thermodynamics and kinetics of CaCO3 formation and dissolution and how surface and nanoparticulate chemistry are important in understanding reactivity. Topics covered are major marine carbonate materials, carbonate mineral precipitation and dissolution kinetics relevant to seawater...
Various parameters of deep-sea sediments from the western Gulf of Mexico which are generally accepted as indicators of calcium carbonate dissolution were subjected to a multivariate statistical analysis in order to determine the amount of variance in each parameter down core attributable to dissolution....
. Calcium carbonate is often the first scale type to deposit. It is characteristic of produced oilfield brines and is very commonly found at the onset of first water production, and typically severe at points of large pressure drop such as at the production zone and at chokes. In solution, ...
In this paper we estimate the in situ CaCOdissolution rates in the Pacific Ocean water column. Calcium carbonate dissolution rates ranging from 0.01-1.1 渭mol kgyrare observed in intermediate and deepwater beginning near the aragonite saturation horizon. In the North Pacific Intermediate Water between...
CO2 absorption is enhanced by increasing the alkalinity of the solution, and since pH significantly modifies the amount of ionic species present in the aqueous solution, hence, certain carbonate concentrations could be achieved by controlling the pH of water for carbon dioxide dissolution. In the ...
Rates of carbonate dissolution in permeable sediments estimated from pore-water profile... In this study we estimate sediment carbonate dissolution rates for sandy sea grass sediments on the Bahamas Bank using an inverse pore-water advection/diff... DJ Burdige,RC Zimmerman,X Hu 被引量: 24发表:...
Topic: Dissolution of calcium carbonate in nitric acid, then combustion (Read 5549 times) Hello, I have these reactions (they should be correct): CaCO3(s) + 2HNO3(aq) --> H2O(l) + Ca2+(aq) + CO2(g) + 2NO3-(aq) Eq. 1
(c) incubation in the reaction solution without the carbonate source for 2 days. The precipitation was performed using the ammonium diffusion method (ADM) and the carbonate source was then removed. The images show that the surfaces of the fresh crystals are extremely rough, which gives rise to...