Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10216/139637
Autor(es): | Aba, R.P. Mugani, R. Hejjaj, A. de Fraissinette, N.B. Oudra, B. Ouazzani, N. Campos, A. Vasconcelos, V. Carvalho, P.N. Mandi, L. |
Título: | First report on cyanotoxin (Mc-lr) removal from surface water by multi-soil-layering (msl) eco-technology: Preliminary results |
Editor: | MDPI AG |
Data de publicação: | 2021-05-18 |
Resumo: | Cyanobacteria blooms occur frequently in freshwaters around the world. Some can produce and release toxic compounds called cyanotoxins, which represent a danger to both the environment and human health. Microcystin-LR (MC-LR) is the most toxic variant reported all over the world. Conventional water treatment methods are expensive and require specialized personnel and equipment. Recently, a multi-soil-layering (MSL) system, a natural and low-cost technology, has been introduced as an attractive cost-effective, and environmentally friendly technology that is likely to be an alternative to conventional wastewater treatment methods. This study aims to evaluate, for the first time, the efficiency of MSL eco-technology to remove MC-LR on a laboratory scale using local materials. To this end, an MSL pilot plant was designed to treat distilled water contaminated with MC-LR. The pilot was composed of an alternation of permeable layers (pozzolan) and soil mixture layers (local sandy soil, sawdust, charcoal, and metallic iron on a dry weight ratio of 70, 10, 10, and 10%, respectively) arranged in a brick-layer-like pattern. MSL pilot was continuously fed with synthetic water containing distilled water contaminated with increasing concentrations of MC-LR (0.18–10 µg/L) at a hydraulic loading rate (HLR) of 200 L m−2 day−1. The early results showed MC-LR removal of above 99%. Based on these preliminary results, the multi-soil-layering eco-technology could be considered as a promising solution to treat water contaminated by MC-LR in order to produce quality water for irrigation or recreational activities. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. |
Assunto: | Charcoal Cost effectiveness Pilot plants Soils Surface waters Wastewater treatment Conventional water treatment Cyanobacteria blooms Eco technologies Environmentally-friendly technology Hydraulic loading rates Low cost technology Permeable layers Recreational activities Water treatment cyanobacterium new record pollutant removal recreational activity surface water toxin wastewater treatment water pollution water quality Cyanobacteria |
URI: | https://hdl.handle.net/10216/139637 |
Série: | Water (Switzerland) 13(10):1403 |
Informação Relacionada: | Horizon 2020-MSCA- 823860. |
Tipo de Documento: | Artigo em Revista Científica Internacional |
Condições de Acesso: | openAccess |
Aparece nas coleções: | CIIMAR - Artigo em Revista Científica Internacional |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Aba_R.P_2021.pdf | 2.21 MB | Adobe PDF | Ver/Abrir |
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