Nature-based coagulants for drinking water treatment: An ecotoxicological overview
| Autor: | Widad El Bouaidi, Giovanni Libralato, Zakaria Tazart, Ghizlane Enaime, Mountasser Douma, Abdelaziz Ounas, Abdelrani Yaacoubi, Giusy Lofrano, Maurizio Carotenuto, Lorenzo Saviano, Antonietta Siciliano, Vincenzo Romano Spica, Marco Guida, Mohammed Loudiki |
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| Přispěvatelé: | El Bouaidi, Widad, Libralato, Giovanni, Tazart, Zakaria, Enaime, Ghizlane, Douma, Mountasser, Ounas, Abdelaziz, Yaacoubi, Abdelrani, Lofrano, Giusy, Carotenuto, Maurizio, Saviano, Lorenzo, Siciliano, Antonietta, Romano Spica, Vincenzo, Guida, Marco, Loudiki, Mohammed |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
ecotoxicology tests
Animal Plant Extracts Ecological Modeling Drinking Water ecotoxicology test plant-based coagulant Ecotoxicology Pollution screening study coagulation proce Plant Extract Water Purification Daphnia coagulation process Microcystis aeruginosa plant-based coagulants Environmental Chemistry Animals Humans Waste Management and Disposal Water Pollutants Chemical Water Science and Technology Human |
| Popis: | The intensive human activities extensively contaminated water sources making its treatment a problem of paramount importance, especially with the increasing of global population and water scarcity. The application of natural coagulants has become a promising and environmentally friendly alternative to conventional ones. This study was aimed at evaluating the efficiency of four plant extracts namely Agave americana, Carpobrotus acinaciformis, Austrocylindropuntia subulate, and Senicio anteuphorbium as natural coagulants to remove Microcystis aeruginosa cyanobacterium from water. The effects of pH (4, 5, 6, 7, 8 9, and 10) and coagulant dose (5, 10, 15, 20, 25, and 30 mg/L) on the coagulation efficiency were investigated. Results showed that plant-based extracts exhibited high coagulant abilities significantly contributing to the removal of M.aeruginosa cells up to 80% on a case-by-case basis. The ecotoxicity (Daphnia magna, Aliivibrio fischeri, Raphidocelis subcapitata, and Sorghum saccharatum) was absent or presented very slight acute toxicity up to 12.5mg/L being S.anteuphorbium the least toxic. PRACTITIONER POINTS: Nature-based plant extracts showed removal rates up to 80%. Lower pH and A.subulate and S.anteuphorbium were the most efficient coagulants Toxicity effects were plant extracts-based and dose function. A.subulate and S.anteuphorbium were the least toxic extracts. |
| Databáze: | OpenAIRE |
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