Os diferentes tipos de coagulantes naturais para o tratamento de água: uma revisão
2020
Natural coagulants are natural compounds, such as seeds, mucilage and other compounds based or not based on plants, which have the ability to remove contaminants from water, sewage and effluents. Its use has a strong environmental, economic and social appeal, especially because these are compounds easily found in nature, such as moringa, okra and cactus, and therefore cheap, increasing the quality of life of society and mitigating damage/environmental impact. The aim of this review was to present the different types of natural coagulants, their respective uses and characteristics. This research was elaborated through search in the specialized literature, with about 160 researched articles and 38 effectively used, a research that focuses on discussing the benefits of natural coagulants against chemical coagulants, as well as the implications of different types of natural coagulants in the treatment of water, wastewater and sewage. It was found that the issues involving research on natural coagulants are an environmentally friendly, inexpensive way and an objective to be achieved, given the great demand for water and effluent treatment that occur around the world.
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