Impact of Calcium Carbonate Mineral Scales in Industries

2013 ◽  
pp. 309-324 ◽  
Author(s):  
Partha Patra ◽  
P Somasundaran ◽  
Chi Lo
Keyword(s):  
Calcium Carbonate ◽  
Carbonate Mineral

scholarly journals Hybrid Precipitated Calcium Carbonate Containing Wood Flour for Paper Applications – A Comparative Handsheet Study

2019 ◽  
pp. 1-13
Author(s):  
Klaus Dölle ◽  
Kilian F. Baumgartner ◽  
Neil F. Goodman ◽  
Alexander Klitsiotisoris
Keyword(s):  
Calcium Carbonate ◽  
Filler Content ◽  
Wood Flour ◽  
Filler Material ◽  
Carbonate Mineral ◽  
Precipitated Calcium Carbonate ◽  
Hybrid Filler ◽  
Different Types ◽  
Flour Blends ◽  
Ground Calcium Carbonate

The main objective of this paper handsheet study is to investigate if a hybrid filler material containing wood flour and precipitated calcium carbonate can replace and/or supplement commercially available ground calcium carbonate and precipitated calcium carbonate mineral filler material for papermaking. The handsheet study contains 25 different furnish mixtures. Four different types of wood flour were used to manufacture the hybrid filler material, including two wood flour blends with a strengthening agent. All handsheet were manufactured with an 80% harwood and 20% softwood mix. The filler content varied between 10, 15 and 20%. The study showed that the hybrid filler material achieved a retention of up to 92.68% as well as a higher caliper of up to 208 μm compared to commercial ground and precipitated calcium carbonate of 120.4 μm and 145.6 μm respectively. Tensile and tear strength did not show an improvement. Elongation and tensile energy absorption did improve of up to 30% with the strength additive containing hybrid filler material. Opacity was improved of up to 10% with the hybrid filler material. Brightness and color values were lower due to the natural brow color of the wood flower material.

scholarly journals Progress of Bio-Calcium Carbonate Waste Eggshell and Seashell Fillers in Polymer Composites: A Review

2020 ◽  
Vol 4 (2) ◽  
pp. 70 ◽  
Author(s):  
Stephen Owuamanam ◽  
Duncan Cree
Keyword(s):  
Tensile Strength ◽  
Calcium Carbonate ◽  
Environmental Impact ◽  
Impact Toughness ◽  
Flexural Strength ◽  
Polymer Composites ◽  
Polymer Materials ◽  
Future Research ◽  
Carbonate Mineral ◽  
Thermoset Polymer

Disposal of massive amounts of eggshells and seashells from processing industries is a challenge. In recent years, there has been a focus to reuse these waste resources in the production of new thermoplastic and thermoset polymer materials. This paper reviews eggshell and seashell production by country and provides a perspective on the quantity of bio-calcium carbonate that could be produced annually from these wastes. The achievements obtained from the addition of recycled bio-calcium carbonate fillers (uncoated/unmodified) in polymer composites with a focus on tensile strength, flexural strength and impact toughness are discussed. To improve compatibility between calcium carbonate (mineral and bio-based) fillers and polymers, studies on surface modifiers are reviewed. Knowledge gaps and future research and development thoughts are outlined. Developing novel and innovative composites for this waste material could bring additional revenue to egg and seafood processors and at the same time reduce any environmental impact.

Calcium coordination environment in precursor species to calcium carbonate mineral formation

2019 ◽  
Vol 259 ◽  
pp. 344-357 ◽  
Author(s):  
Jonathan Avaro ◽  
Ellen M. Moon ◽  
Jerome Rose ◽  
Andrew L. Rose
Keyword(s):  
Calcium Carbonate ◽  
Carbonate Mineral ◽  
Mineral Formation ◽  
Coordination Environment

scholarly journals A Numerical Model for Enzymatically Induced Calcium Carbonate Precipitation

2020 ◽  
Vol 10 (13) ◽  
pp. 4538 ◽  
Author(s):  
Johannes Hommel ◽  
Arda Akyel ◽  
Zachary Frieling ◽  
Adrienne J. Phillips ◽  
Robin Gerlach ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Numerical Model ◽  
Model Calibration ◽  
Column Experiments ◽  
Carbonate Precipitation ◽  
Carbonate Mineral ◽  
Calcium Carbonate Precipitation ◽  
Mineral Precipitation ◽  
Sporosarcina Pasteurii

Enzymatically induced calcium carbonate precipitation (EICP) is an emerging engineered mineralization method similar to others such as microbially induced calcium carbonate precipitation (MICP). EICP is advantageous compared to MICP as the enzyme is still active at conditions where microbes, e.g., Sporosarcina pasteurii, commonly used for MICP, cannot grow. Especially, EICP expands the applicability of ureolysis-induced calcium carbonate mineral precipitation to higher temperatures, enabling its use in leakage mitigation deeper in the subsurface than previously thought to be possible with MICP. A new conceptual and numerical model for EICP is presented. The model was calibrated and validated using quasi-1D column experiments designed to provide the necessary data for model calibration and can now be used to assess the potential of EICP applications for leakage mitigation and other subsurface modifications.

scholarly journals Supplementary material to "Precipitation of Calcium Carbonate Mineral Induced by Viral Lysis of Cyanobacteria"

2018 ◽  
Author(s):  
Hengchao Xu ◽  
Xiaotong Peng ◽  
Shijie Bai ◽  
Kaiwen Ta ◽  
Shouye Yang ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Carbonate Mineral ◽  
Viral Lysis ◽  
Supplementary Material
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