Moroccan Journal of Agricultural and Veterinary Sciences

Vol. 11 No. 4 (2023): (December 2023)
Natural Resources and Forestry

Phytoremediation potential of water hyacinth (Eichhornia crassipes) for wastewater purification in Togo

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  • Fousséni ATAKPA-BASSABI,
  • Madjouma KANDA,
  • Bilouktime BADJARE,
  • Abalo ATATO,
  • Komlan BATAWILA,
  • Koffi AKPAGANA
Fousséni ATAKPA-BASSABI Laboratoire de botanique et écologie végétale, Département de Botanique, Faculté des sciences de l'université de Lomé, Togo
Madjouma KANDA Laboratoire de botanique et écologie végétale, Département de Botanique, Faculté des sciences de l'université de Lomé, Togo
Bilouktime BADJARE Laboratoire de botanique et écologie végétale, Département de Botanique, Faculté des sciences de l'université de Lomé, Togo
Abalo ATATO Faculté des Sciences et Techniques, Université de Kara, Togo
Komlan BATAWILA Laboratoire de botanique et écologie végétale, Département de Botanique, Faculté des sciences de l'université de Lomé, Togo
Koffi AKPAGANA Laboratoire de botanique et écologie végétale, Département de Botanique, Faculté des sciences de l'université de Lomé, Togo

Published 2023-12-23

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Abstract

Phytoremediation is the process of using plants through extraction, stabilization, degradation and volatilization to clean up soil, water and air contaminated by toxic substances, pollutants or heavy metals. Phytoremediation plants remain to this day an efficient way to decontaminate water, soil and air. The general objective of this work is to contribute to water purification through phytoremediation plants. We studied the phytoremediation potential of Eichhornia crassipes (Mart.) (Solms-Laub) recognized as the most pollutant-accumulating species in the study area, in an experimental design in discontinuous mode. This preliminary work consisted of a literature review on phytoremediation species and an experimental study of the kinetics of phytoremediation of water hyacinth. The physico-chemical parameters considered are pH, conductivity, orthophosphate, nitrates, Biological Oxygen Demand (BOD), and Chemical Oxygen Demand. The pH, orthophosphate, BOD, and COD values decreased by 3.20%; 68%; 97% and 85%, respectively, on day 24, but the nitrate concentration increased from 0.8 mgNO3-/l to 65.5 mgNO3-/l. This increase in nitrate is due to nitrification of ammonium nitrogen to nitrite.

 Keywords: Phytoremediation plants, sanitation, Eichhornia crassipes, kinetics, wastewater

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