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Isabella T. Tomasi, Sílvia C. R. Santos, Rui A. R. Boaventura and Cidália M. S. Botelho
Tannins are natural polyphenolic compounds widely found in plants. The production of natural coagulants for water treatment is one of their new applications. Polyphenols extraction is the first step for synthesizing tannin-based coagulants. Eucalyptus gl...
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Amina Hadadi, Ali Imessaoudene, Jean-Claude Bollinger, Aymen Amine Assadi, Abdeltif Amrane and Lotfi Mouni
Due to their cost-effectiveness, low toxicity, and naturally renewable properties, bio-coagulants for water treatment are gaining popularity. In this context, four bio-coagulants were tested for their ability in turbidity reduction in a synthetic bentoni...
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João Paulo Nascimento Armeloni, Danieli Soares de Oliveira, Clainer Bravin Donadel
Pág. e44800
The increasing demand for water resources (primarily for human consumption and industrial and agricultural activity) is driven by socio-economic development, and population growth. Recent research has been focusing on alternative coagulants based on natu...
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Marina Corral Bobadilla, Rubén Lostado Lorza, Rubén Escribano García, Fátima Somovilla Gómez and Eliseo P. Vergara González
The clarification process removes colloidal particles that are suspended in waste water. The efficiency of this process is influenced by a series of inputs or parameters of the coagulation process, of which the most commonly used are initial turbidity, n...
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Alexander Keucken, Gerald Heinicke, Kenneth M. Persson and Stephan J. Köhler
Membrane hybrid processes?coagulation coupled with ultrafiltration (UF)?have become a common method to comply with the legal, chemical, and microbiological requirements for drinking water. The main advantages of integrating coagulation with membrane filt...
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Bruna Souza dos Santos, Eduardo Eyng, Paulo Rodrigo Stival Bittencourt, Laercio Mantovani Frare, Éder Lisandro de Moraes Flores, Michelle Budke Costa
Pág. 483 - 488
Although an important significant sector in world economy, the textile industry is known for its large volumes of wastewater generated in production processes. In the search for cleaner technologies, the application of electrochemical processes, such as ...
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Heber Martins de Paula, Marina Sangoi de Oliveira Ilha, Leonardo Santos Andrade
Pág. 57 - 64
Wastewater from concrete plants has a high pH and a high concentration of suspended solids, necessitating treatment before reuse or discharge into the environment. The objective of this study is to evaluate the efficiency of two chemical coagulants, alum...
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Q. Ding, H. Yamamura, N. Murata, N. Aoki, ... Y. Watanabe
Pág. 127 - 136
In coagulation-membrane filtration water treatment processes, it is still difficult to determine the optimal coagulation condition to minimize irreversible membrane fouling. In microfiltration (MF), meso-particles (i.e., 20 nm?0.5 µm) are thought to play...
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Osorio Moreira Couto Junior, Maria Angélica Simões Dornelas Barros, Nehemias Curvelo Pereira
Pág. 83 - 88
This study investigated the optimization of time of coagulation, flocculation, and sedimentation of the chemical coagulant, aluminum sulfate and natural coagulant, Tannin. It was performed an economic analysis of the process, checked the removal efficien...
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Grasiele Scaramal Madrona, Ivanise Guilherme Branco, Vanessa Jurca Seolin, Benicio de Abreu Alves Filho, Marcia Regina Fagundes-Klen, Rosangela Bergamasco
Pág. 289 - 293
Several natural coagulants have been studied for use in water treatment. The seed of Moringa oleifera Lam, for example, is a natural coagulant whose extract has been mentioned as effective not only for removing color, turbidity, and compounds with absorp...
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