African Journal of
Environmental Science and Technology

  • Abbreviation: Afr. J. Environ. Sci. Technol.
  • Language: English
  • ISSN: 1996-0786
  • DOI: 10.5897/AJEST
  • Start Year: 2007
  • Published Articles: 1064

Full Length Research Paper

Uroclhoa mosambincensis: A potential native phytoremediator for soils contaminated with arsenic

Sónia Isabel Ventura Guilundo
  • Sónia Isabel Ventura Guilundo
  • Biology Science Department, Eduardo Mondlane University (DCB-UEM), Maputo, Mozambique.
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Marta Alberto Aduge
  • Marta Alberto Aduge
  • Biology Science Department, Eduardo Mondlane University (DCB-UEM), Maputo, Mozambique.
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Edmilson Enes Manuel Simango
  • Edmilson Enes Manuel Simango
  • Biology Science Department, Eduardo Mondlane University (DCB-UEM), Maputo, Mozambique.
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Domingos Maguengue
  • Domingos Maguengue
  • Biology Science Department, Eduardo Mondlane University (DCB-UEM), Maputo, Mozambique.
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Esnaider Rodríguez Suárez
  • Esnaider Rodríguez Suárez
  • Chemical Department, Eduardo Mondlane University (DQ-UEM), Maputo, Mozambique.
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Célia Marília Martins
  • Célia Marília Martins
  • Biology Science Department, Eduardo Mondlane University (DCB-UEM), Maputo, Mozambique.
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Orlando António Quilambo
  • Orlando António Quilambo
  • Biology Science Department, Eduardo Mondlane University (DCB-UEM), Maputo, Mozambique.
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  •  Received: 06 November 2020
  •  Accepted: 07 October 2021
  •  Published: 31 December 2021

Abstract

Industrial development has caused the contamination of the environment, leading to biodiversity loss and human health concerns. The use of native plants and/or their associated microbiota is a sustainable solution for reducing or transforming contaminants into less harmful forms. This study was conducted to evaluate the remedial potential of Uroclhoa mosambincensis in soils contaminated with arsenic. In a greenhouse experiment, seedlings of U. mosambincensis were divided into four treatments of increasing arsenic concentration. It was found out that in U. mosambicensis, although most physiological parameters were affected, in 200 mg.kg-1 arsenic trioxide concentration (As2O3) an increase in 23.3% of leaf biomass was observed. Chlorophyll A was not significantly affected by the presence of arsenic. It was also verified that the increase in arsenic concentration stimulated the removal of arsenic from soil to plant tissues at a percentage of 10.8, 27.7 and 30.2 higher in each treatment. This indicates the arsenic accumulator character of U. mosambicensis and its potential use for remediation of soils contaminated with arsenic.

 

Key words: Accumulation, arsenic trioxide, metalloid, phytoremediation.