Potential of plants to produce coagulants for water treatment application: systematic review
DOI:
https://doi.org/10.6008/CBPC2179-6858.2021.002.0027Keywords:
Coagulation, Organic coagulants, Color, Turbidity, Natural resourcesAbstract
Presently, studies report the need to optimize water treatment processes when inorganic coagulants are used, considering they have aluminum and iron in their composition, which are related to several human health issues. Besides, these products have negative economic and ecological aspects, which emphasizes their inefficacy. Some technologies are being developed in order to address this issue, organic coagulants being one of them due to the fact that they are based on renewable resources, assimilated by the environment, efficient in a high pH range, promote reduction of sludge generation in the process, with no relation to public health issues, they are a viable alternative to inorganic coagulants. This research aimed to produce a systematic review of online research databases regarding the potential of vegetable species to produce organic coagulants. From this perspective, it was found that these coagulants are able to remove up to 97,80% of apparent color and up to 100% of turbidity; Moringa oleífera e Acacia mearnsii species presented most eminent results; furthermore, literature on the subject confirms their efficiency in relation to their cost and production sustainability as well as their use either in small communities or in large-scale.
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