Effectiveness of the mixture of nopal and cassava starch as clarifying substances in water purification: A case study in Colombia.
Cassava starch
Chemical engineering
Drinking water treatment
Environmental engineering
Environmental health
Environmental science
Flocculating aid
Magdalena
Natural coagulant
Nopal mucilage
Water treatment
Journal
Heliyon
ISSN: 2405-8440
Titre abrégé: Heliyon
Pays: England
ID NLM: 101672560
Informations de publication
Date de publication:
Jun 2020
Jun 2020
Historique:
received:
24
01
2020
revised:
16
02
2020
accepted:
22
06
2020
entrez:
9
7
2020
pubmed:
9
7
2020
medline:
9
7
2020
Statut:
epublish
Résumé
Aluminum sulfate is one of the most used chemical coagulants in the world, but research has shown that high concentrations of aluminum in the body are associated with neuropathological conditions. Because of this, different alternatives have been evaluated such as natural coagulants, which are considered safe for human health and contain fewer contaminants than chemicals due to their biodegradation properties. The main objective of this study was to evaluate the efficiency of mixing nopal mucilage and cassava starch for turbidity removal in water purification. In this paper, test jars and the treatment equipment (TA-scale FQ-005/PE manufactured by Generatoris SA de CV of Mexico) was applied in order to measure turbidity and pH parameters before and after the process of coagulation-flocculation, which was applied to water from the Magdalena River in Colombia. Samples from two sampling periods were assessed. One was evaluated during the rainy season and the other was evaluated without precipitation (drought) with initial turbidities of 316 NTU and 80 NTU, respectively. It was found that aluminum sulfate as a coagulant reference obtained better turbidity removal results (up to 99%) as compared to nopal (up to 60.4%), and nopal-starch combination of cassava (up to 67%), indicating that this mixture increases the effectiveness of natural coagulants used individually. Our results indicate that this should be considered as an alternative in the water purification process.
Identifiants
pubmed: 32637691
doi: 10.1016/j.heliyon.2020.e04296
pii: S2405-8440(20)31140-3
pii: e04296
pmc: PMC7327736
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e04296Informations de copyright
© 2020 The Author(s).
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