Development of anti-scale poly(aspartic acid-citric acid) dual polymer systems for water treatment

The formation of calcium sulphate and calcium carbonate scale poses major problems in heat exchangers and water cooling systems, thereby affecting the performance of these types of equipment. In order to inhibit these scale formations, new types of biodegradable water soluble single polymer and dual...

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Bibliographic Details
Published in:Environmental technology 2014-12, Vol.35 (23), p.2903-2909
Main Authors: Nayunigari, Mithil Kumar, Gupta, Sanjay Kumar, Kokkarachedu, Varaprasad, Kanny, K., Bux, F.
Format: Article
Language:English
Subjects:
Acids
Applied sciences
Aspartic Acid - chemistry
Biodegradability
Calcium carbonate
Calcium Carbonate - chemistry
Calcium sulfate
Calcium Sulfate - chemistry
calcium sulphate
Chemical engineering
Citric acid
Citric Acid - chemistry
Exact sciences and technology
Heat exchangers and evaporators
Inhibition
Inhibitors
Microscopy, Electron, Scanning
Peptides - chemistry
Pollution
Polymers
R&D
Research & development
scale deposition
Scientific papers
Spectroscopy, Fourier Transform Infrared
Temperature
Thermogravimetry
Water cooling
Water Purification - methods
Water treatment
water treatment and dual polymer
X-Ray Diffraction
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Summary:The formation of calcium sulphate and calcium carbonate scale poses major problems in heat exchangers and water cooling systems, thereby affecting the performance of these types of equipment. In order to inhibit these scale formations, new types of biodegradable water soluble single polymer and dual poly(aspartic acid-citric acid) polymers were developed and tested. The effectiveness of single polymer and four different compositions of poly aspartic acid and citric acid dual polymer systems as scale inhibitors were evaluated. Details of the synthesis, thermal stability, scale inhibition and the morphological characterization of single and dual polymers are presented in this scientific paper. It was found that the calcium sulphate scale inhibition rate was in the range 76.06-91.45%, while the calcium carbonate scale inhibition rate observed was in the range 23.37-30.0% at 65-70 °C. The finding suggests that the water soluble dual polymers are very effective in sulphate scale inhibition in comparison of calcium carbonate scale inhibition.
ISSN:0959-3330
1479-487X
DOI:10.1080/09593330.2014.925510