New application of brown sea algae as an alternative to phosphorous-containing antiscalant
Autor: | Mervat A. Abdel-Kawi, D.E. Abd-El-Khalek, J M Anwar, E. Khamis |
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Rok vydání: | 2020 |
Předmět: |
Green chemistry
Sustainable development biology 0208 environmental biotechnology Environmental engineering Water Phosphorus 02 engineering and technology General Medicine 010501 environmental sciences biology.organism_classification Phaeophyta 01 natural sciences 020801 environmental engineering Calcium Carbonate Water Purification Algae Environmental Chemistry Environmental science Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology |
Zdroj: | Environmental technology. 43(4) |
ISSN: | 1479-487X |
Popis: | Over the past decade, green chemistry research has focused on the importance of protecting the environment, especially to align with UN sustainable development goals by avoiding the use of chemicals that are harmful to the environment and society. In this study, an aqueous extract derived from brown sea algae was prepared and its performance as antiscalant was compared to commercial antiscalant (Hydroxy ethylidene, 1-Diphosphonic Acid, HEDP) and evaluated using electrochemical measurements, conductivity and standard NACE test in addition to microscopic examination. It was found that there is a significant inhibition efficiency of brown algae towards the tested scales as HEDP. The obtained extract had the ability to prevent precipitation of calcium sulphate, calcium carbonate, barium sulphate and strontium carbonate with percent inhibition of 100%, 80%, 84% and 75%, respectively. The inhibitory effect of the extract can be attributed to the presence of carboxylate and hydroxyl groups that are adsorbed on the surface sites and disturb the normal crystal growth of the scale. The results of the study will lead to the discovery of further new applications of ecologically, cost-effective, renewable source and benign antiscalant that can be considered as an alternative to non-green technologies particularly those used in the food and pharmaceutical industries as well as in desalination plants. |
Databáze: | OpenAIRE |
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