Phytoremediation Potentials of Selected Plants in Industrially Contaminated Soils

Abstract

Abstract-Waste discharges into River Challawa in Kano, Nigeria is posing serious environmental hazards. The present study was therefore designed to examine the potentials of Jatropha (Jatrophacurcas), Neem (Azadirachtaindica) and Baobab (Adansoniadigitata) for phytoremediation of some heavy metalsin the industrially contaminated soils of Challawain Kano, Nigeria. The plants were grown under hydroponic greenhouse conditions for thirteen weeks andlevels of metals in plants, soil and effluent water were determined using Atomic Absorption Spectrophotometer. The mean concentrations of the metals ranged from 4.33±0.02mg/kg Pb to 453.15 ±42.32mg/kg Feand 2.6 ± 0.01 mg/kg to 114.6 ± 23.24 mg/kg for plants grown in the contaminated and control soils respectively. The bioaccumulation factors (BAC>1) indicates metal contamination of the soils and thus can be used for their phytoextraction. The results suggests that the investigated plants are potentially useful for remediating heavy metals from Challawacont animated soils.

Field accumulation and translocation of potentially toxic elements (PTEs) from industrial soil by the biodiesel plant, Jatropha curcas

“…However, the results showed that roots were found to accumulate considerable amounts of Zn than leaf and stem tissues compared to their levels in similar tissues of the control as depicted by fig 2. This results agrees with the findings of Abdullahi et al, 2016,Waziri et al, 2016, Wu et al, 2011and Ahmadpour et al, 2010, for the same plant. Zinc is an essential trace element required for plant growth and it is very important in many metabolic processes in plants (Ji et al, 2021).…”

“…Among the heavy metals, Cd is relatively mobile in the soil and can be toxic to both plants and animals (Rizwan et al, 2017). Results obtained showed that accumulation of Cd in J. curcas is found to be higher in leaf than both the stem and root tissues compared to their levels in similar tissues of the control as depicted by fig 4.This results agrees with the findings of Chang et al, (2014), Abdullahi et al, (2016) and Waziri et al, (2016) for the same plant. Uptake of Cd in plants is controlled by its concentration and bioavailability in soil which are influenced by soil properties .Cd is one of the most phytotoxic elements and does not have a known biological function in plants (Dobrikova et al, 2021).…”

Phytoremediation of Contaminated Soils from Challawa Industrial Estate, Kano-Nigeria

“…These values indicated higher availability and distribution of metals in soils contaminated with heavy metals in the three plant species which can be labeled as translocators of Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn based on TF>1. Heavy metal tolerance with high TF value have been suggested for phytoaccumulator of contaminated soils [42,43] and therefore these plant species can be used as phytoremediators for multi-metal contaminated soils.…”

Assessment of phytoremediation potential of Telfaira occidentalis in the removal of Cu, Cd, and Pb in contaminated soil along River Salanta

“…These values indicated higher availability and distribution of metals in soils contaminated with heavy metals in the three plant species which can be labeled as translocators of Cd, Cu, andPb based on TF>1. Heavy metal tolerance with high TF value have been suggested for phytoaccumulator of contaminated soils [21,22] and therefore these plant species can be used as phytoremediators for multi-metal contaminated soils. Also the results revealed high bioaccumulation factors (BAF) of all the metals examined in the tissues.…”