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TitlePermeable biosorbent barrier for wastewater remediation
Author(s)Silva, Bruna
Tuuguu, E.
Costa, Filomena
Rocha, Verónica
Lago, A.
Tavares, Teresa
Permeable barrier
Issue dateNov-2017
PublisherSpringer Science+Business Media
JournalEnvironmental Processes
CitationSilva, Bruna; Tuuguu, E.; Costa, Filomena; Rocha, Verónica; Lago, A.; Tavares, Teresa, Permeable biosorbent barrier for wastewater remediation. Environmental Processes, 4(Suppl. 1), 195-206, 2017
Abstract(s)Chromium is one of the heavy metals that significantly affect water quality in Mongolia. The present study is focused on the remediation of surface water contaminated with chromium (III) by a permeable barrier in order to prevent sediment pollution. The adsorption capacity of the selected materials (13X zeolite and vermiculite) was investigated at different sorbent dosages, pH and initial Cr(III) concentration. The equilibrium adsorption studies showed that vermiculite has a higher Cr(III) removal efficiency in comparison with 13X zeolite. A fungal isolate obtained from the sediment samples collected near Tuul River (Mongolia) was selected from enriched Luria-Bertani medium, showing a good performance for Cr(III) removal (78.2\% for an initial concentration of 50 mg/L). The fungal isolate was genetically typed by DNA sequencing and was identified as belonging to the Alternaria alternata species. 13X zeolite showed the best performance for Cr removal in the permeable barrier assays compared to vermiculite, achieving a total removal of 96\\% and a global uptake of 2.49 mg/g. After 13 days of operation none of the barriers reached saturation with chromium.
Publisher version
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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