The effects of magnesium-to-calcium ratios in artificial seawater, at different ionic products, upon the induction time, and the mineralogy of calcium carbonate: a laboratory study

A. I. Rushdi; R. M. Pytkowicz; E. Suess; C. T. Chen

doi:10.1007/bf01828616

The effects of magnesium-to-calcium ratios in artificial seawater, at different ionic products, upon the induction time, and the mineralogy of calcium carbonate: a laboratory study

Geologische Rundschau ◽

10.1007/bf01828616 ◽

1992 ◽

Vol 81 (2) ◽

pp. 571-578 ◽

Cited By ~ 19

Author(s):

A. I. Rushdi ◽

R. M. Pytkowicz ◽

E. Suess ◽

C. T. Chen

Keyword(s):

Calcium Carbonate ◽

Laboratory Study ◽

Induction Time ◽

Artificial Seawater

Download Full-text

Calcium carbonate scales on process equipment: A measure of the induction time for nucleation

10.5004/dwt.2017.20300 ◽

2017 ◽

Vol 69 ◽

pp. 173-177 ◽

Cited By ~ 3

Author(s):

G. Mazziotti di Celso ◽

M. Prisciandaro ◽

D. Karatza ◽

A. Lancia ◽

D. Musmarra

Keyword(s):

Calcium Carbonate ◽

Induction Time ◽

Process Equipment

Download Full-text

Monte Carlo simulation of the induction time and particle size distribution in the nucleation of calcium carbonate

Powder Technology ◽

10.1016/j.powtec.2013.11.003 ◽

2014 ◽

Vol 253 ◽

pp. 242-246 ◽

Cited By ~ 5

Author(s):

Hongyo Xu ◽

Sichen Zhou ◽

Xibiao Jin ◽

Yongdi Liu

Keyword(s):

Monte Carlo Simulation ◽

Particle Size ◽

Monte Carlo ◽

Calcium Carbonate ◽

Particle Size Distribution ◽

Size Distribution ◽

Induction Time

Download Full-text

The effects of organic additives on induction time and characteristics of precipitated calcium carbonate

Chemical Engineering Research and Design ◽

10.1016/j.cherd.2009.10.002 ◽

2010 ◽

Vol 88 (11) ◽

pp. 1450-1454 ◽

Cited By ~ 20

Author(s):

Raluca Isopescu ◽

Carmencita Mateescu ◽

Mihaela Mihai ◽

Gabriel Dabija

Keyword(s):

Calcium Carbonate ◽

Induction Time ◽

Organic Additives ◽

Precipitated Calcium Carbonate

Download Full-text

Utilisation of Titanium and Titanium Dioxide as Scaffolds for Proliferating Coral Reef

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1016.1497 ◽

2021 ◽

Vol 1016 ◽

pp. 1497-1502

Author(s):

Masato Ueda ◽

Chihiro Sawatari ◽

Tomoyuki Takahashi ◽

Hiroaki Tsuruta ◽

Hidenobu Tokushige ◽

...

Keyword(s):

Titanium Dioxide ◽

Coral Reef ◽

Calcium Carbonate ◽

Coral Reefs ◽

Artificial Seawater ◽

Inorganic Substance ◽

Restoration Techniques ◽

Surface Modified ◽

Dioxide Film ◽

Planula Larva

Estimated 30 percent or more of coral reefs are now in danger of extinction by coastal construction increases and global temperatures rise. Several restoration techniques such as fragmentation, forming, Biorock have been developed in the past few years. In vertebrates such as mammals, osteoblast is known to form the bones composed of hydroxyapatite. Therefore, bone substitutional devices are generally surface modified to improve the adhesion of osteoblasts on the surfaces. Titanium dioxide film is often employed as the surface material for hard tissue substitutes made of titanium and its alloys. In hard corals, on the other hand, the soft tissue covered on the skeletons made of calcium carbonate has osteoblasts as well. The purpose of this work was to investigate the potential of titanium (Ti) and titanium dioxide (TiO2) as scaffolds for proliferating coral reefs by analysing the several interfacial reactions. The rods of pure Ti were anodised in aqueous phosphoric acid at a constant voltage of 80 V. The surfaces were confirmed to be anatase type TiO2. The coral fragments were kept in contact with the rods in a lab-scale aquarium with artificial seawater for several days. The colony of polyps vigorously expanded on the surfaces. Fragments of coral were placed on pure Ti, TiO2 coated pure Ti in Petri dishes and were reared in artificial seawater. Fine spherical precipitates of calcium carbonate with aragonite structure, which is the same inorganic substance as corals, were observed radially and regularly on the surfaces of TiO2. In addition, the adherence of planula larva to the sputtered TiO2 film was observed by using a QCM (Quartz Crystal Microbalance) method. The approach and adhesion of planula larva to the surface could be detected by monitoring the resonance frequency and resistance. The surfaces might have a great potential in coral reef regenerations.

Download Full-text