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Title: Phytoremediation of boron from wastewater in vertical flow constructed wetlands
Authors: Correia, Pedro
Ribeiro, Carlos
Chaves, Humberto
Carvalho, Fátima
Almeida, Adelaide
Keywords: Biomass composition
Boron removal
Light expanded clay aggregates
Vetiveria zizanioides
Vertical flow constructed wetland
Issue Date: 10-Aug-2022
Publisher: KnE Materials Science
Citation: Correia, P., Ribeiro, C., Chaves, H., Carvalho, F. & Almeida, A. (2021, dezembro 9-10). Phytoremediation of boron from wastewater in vertical flow constructed wetlands. [Conference proceedings]. 1st International FibEnTech Congress (FibEnTech21) New opportunities for fibrous materials in the ecological transition, KnE Materials Science. Covilhã, Portugal.
Abstract: The aim of this work was to evaluate the possibility of boron removal from synthetic wastewater using a vertical constructed flow (VFCW) planted with Vetiveria zizanioides. Two boron concentrations were used (15 ± 1 and 30 ± 1 mg L−1) and a hydraulic load (H𝐿) of 191 ± 10 L m−2d−1. The wastewater samples were taken and the flow rate in the inlet and outlet of the VFCW were measured. The levels of dissolved oxygen, electrical conductivity, pH and boron were determined in the wastewater. The concentrations of the essential elements and nutrients, namely total Kjeldhal nitrogen, phosphorus, calcium, magnesium, sodium and potassium in above growth biomass composition were measured. The results showed that: boron removal efficiencies depended on the boron concentration, so 60 ± 3% was obtained for the 15 mg L−1 concentration and 26 ± 2% for 30 mg L−1; calcium, magnesium, potassium and sodium concentrations in the vegetal biomass decreased to the boron concentration of 30 mg L−1, and boron may have interfered with Vetiveria zizanioides growth.
Peer reviewed: yes
ISSN: 2519-1438
Publisher version:
Appears in Collections:D-TCA - Comunicações com peer review

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