scholarly journals Elemental Concentration of heavy metals in Oyster mushrooms grown on mine polluted soils in Pretoria, South Africa

2021 ◽  
pp. 101763
Author(s):  
S.C. Sithole ◽  
O.O. Agboola ◽  
L.L. Mugivhisa ◽  
S.O. Amoo ◽  
J.O. Olowoyo
Keyword(s):  
Heavy Metals ◽  
South Africa ◽  
Elemental Concentration ◽  
Polluted Soils ◽  
Oyster Mushrooms

Profiles and potential health risks of heavy metals in polluted soils in NE-Iran

Toxin Reviews ◽  
2021 ◽  
pp. 1-13
Author(s):  
Masumeh Taheri ◽  
Mohamad Hosein Mahmudy Gharaie ◽  
Jalil Mehrzad ◽  
Michael Stone ◽  
Reza Afshari
Keyword(s):  
Heavy Metals ◽  
Health Risks ◽  
Polluted Soils ◽  
Potential Health ◽  
Ne Iran

scholarly journals Remediation of Pb and Cd Polluted Soils with Fulvic Acid

Forests ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1608
Author(s):  
Aslihan Esringü ◽  
Metin Turan ◽  
Asli Cangönül
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Fulvic Acid ◽  
Ornamental Plants ◽  
Polluted Soil ◽  
Green Technology ◽  
Zinnia Elegans ◽  
Fresh Weight ◽  
Polluted Soils ◽  
The World

Heavy metal pollution is among the important environmental problems in the world. Many techniques have already been used to remove the heavy metals such as lead (Pb) and cadmium (Cd). Among them, the phytoremediation method is an environmentally friendly and green technology. This study was carried out to determine the efficiency of fulvic acid (FA) application in removing Pb and Cd from polluted soil using Tagetes eracta L. and Zinnia elegans Jacq. ornamental plants. The results indicated that, FA application, number of flower per plants, and plant fresh weight of Tagetes eracta plants and Zinnia elegans plants increased 187.5%, 104.5% and 155.5%, 57.7%, respectively with application of 7000 mg L−1 FA at 100 mg kg−1 Pb pollution condition, whereas 42.85%, 16.5%, and 44.4–36.1% with application of 7000 mg L−1 FA at 30 mg kg±1 Cd pollution condition, respectively. With the FA application in the Zinnia elegans plant, the root part has accumulated 51.53% more Pb than the shoot part. For Cd, the shoot part accumulated 35.33% more Cd than the root. The effect of FA application on superoxide dismutase (SOD), peroxidase (POD) and, catalase (CAT) of the Tagetes eracta were decreased as 32.7%, 33.1%, and 35.1% for Pb, 21.2%, 25.1%, and 26,1%, for Cd, and 15.1%, 22.7%, and 37.7% for Pb, and 7.55%, 18.0%, and 18.8% for Cd were in Zinnia elegans respectively. In conclusion, Tagetes eracta and Zinnia elegans can not be recommended for remediation of Pb and Cd polluted area, but FA can be recommended for Pb and Cd stabilization in polluted soil.

Immobilization of heavy metals in polluted soils by the addition of zeolitic material synthesized from coal fly ash

Chemosphere ◽  
2006 ◽  
Vol 62 (2) ◽  
pp. 171-180 ◽  
Author(s):  
Xavier Querol ◽  
Andrés Alastuey ◽  
Natàlia Moreno ◽  
Esther Alvarez-Ayuso ◽  
Antonio Garcı́a-Sánchez ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Coal Fly Ash ◽  
Polluted Soils ◽  
Zeolitic Material

Heavy Metals Content of Some Medicinal Plants from Kwazulu-Natal, South Africa

2012 ◽  
Vol 11 (9) ◽  
pp. 855-859 ◽  
Author(s):  
F. Mtunzi ◽  
E. Muleya ◽  
J. Modise ◽  
A. Sipamla ◽  
E. Dikio
Keyword(s):  
Heavy Metals ◽  
South Africa ◽  
Medicinal Plants ◽  
Kwazulu Natal

scholarly journals Heavy Metals in Wastewater and Sewage Sludge from Selected Municipal Treatment Plants in Eastern Cape Province, South Africa

Water ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2746 ◽  
Author(s):  
Mojeed A. Agoro ◽  
Abiodun O. Adeniji ◽  
Martins A. Adefisoye ◽  
Omobola O. Okoh
Keyword(s):  
Heavy Metals ◽  
South Africa ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Aquatic Organisms ◽  
Absorption Spectrometry ◽  
Eastern Cape Province ◽  
Eastern Cape ◽  
Removal Capacity ◽  
Treatment Facilities

This study assessed the distribution of five heavy metals (Cd, Pb, Cu, Zn, and Fe) across the various stages of treatment in three selected sewage treatment facilities and their receiving waterbodies in the Eastern Cape Province, South Africa. Aqueous and solid (sludge) samples were collected monthly from September 2015 to February 2016. Quantitation was achieved by atomic absorption spectrometry after necessary sample preparations. Concentrations of heavy metal cations in the sludge generally varied from <DL (below detection limit) to 1.17 mg kg−1, <DL to 0.14 mg kg−1, 27.588 to 69.789 mg kg−1, and <DL to 0.099 mg kg−1 for Cu, Cd, Fe and Pb; while Zn was below detection all through. Similarly, the levels of Cu, Cd, and Fe in the influents, effluents, upstream and downstream across the three plants ranged from <DL–6.588 mg L−1, <DL–0.636 mg L−1, <DL–0.878 mg L−1 and <DL–0.711 mg L−1, respectively; Zn and Pb were less than DL in all the matrices and study locations. All the contaminants were below hazardous levels in all the sludge and aqueous samples except Cd which was higher in effluents and surface waters across the board. Wastewater Treatment Plant (WWTP)-A exhibited better removal capacity for Fe (86.6%), compared to WWTP-B (34.7%) and WWTP-C (56.9%). However, the removal of Cu and Zn was very poor in all the treatment facilities studied. Carcinogenic and non-carcinogenic risks evaluated were sufficiently low. This suggests that the levels of contamination, even with respect to Cd, was minimal. Nevertheless, efforts should be made to keep the concentrations of these contaminants at levels safe for humans and aquatic organisms. Furthermore, the use of the effluents from these facilities for irrigation should be discouraged to prevent unnecessary build-up of metals in the soil and plants grown with such, as well as subsequent bioaccumulation and biomagnification in the food chain.

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