Assessment of plants for phytoremediation of hydrocarbon-contaminated soils in the Sudd Wetland of South Sudan
Hydrocarbon contaminants have become a global concern due to their long-term adverse effects on soil ecosystems and human health. Successful implementation of phytoremediation to clean up hydrocarbon contaminants requires the identification of the most effective remediation plant species. Twelve native plant species of the Sudd Wetland in South Sudan were evaluated for their potential application as phytoremediators. The treatments included six total petroleum hydrocarbon (TPH) concentrations of 0, 25, 50, 75, 100 and 125 g/kg soil. The twelve native plant species tested were: Sorghum arundinaceum Desv., Oryza longistaminata A. Chev. & Roehrich, Hyparrhenia rufa Nees, Abelmoschus ficulneus L., Gossypium barbadense L., Nicotiana tabacum L., Sorghum bicolour L. Moench, Eleusine coracana Gaertn., Capsicum frutescens L., Zea mays L., Tithonia diversifolia Hemsl. and Medicago sativa L. Significant differences in phytoremediation rates were observed amongst the treatments with exception of the 125 g/kg soil concentration of hydrocarbon that was lethal to all the plant species. Over 50% TPH reduction in the 75 g/kg soil concentration was observed in contaminated soil phytoremediation in H. rufa, G. barbadense, O. longistaminata, T. diversifolia and S. arundinaceum, making them potential phytoremediators of hydrocarbon-contaminated soil in the Sudd-Wetland of South-Sudan.
Atangana A., Khasa D., Chang S., Degrande A. (2014): Phytoremediation in Tropical Agroforestry. In: Atangana A., Khasa D., Chang S., Degrande A. (eds.): Tropical Agroforestry. Dordrecht, Springer, 343–351.
Baruah P., Saikia R.R., Baruah P.P., Deka S. (2014): Effect of crude oil contamination on the chlorophyll content and morpho-anatomy of Cyerus brevifolius (Rottb.) Hassk. Environmental Science and Pollution Research International, 21: 12530–12538. https://doi.org/10.1007/s11356-014-3195-y
Chekol T., Vough L.R. (2001): A study of the use of alfalfa (Medicago sativa L.) for the phytoremediation of organic contaminants in soil. Remediation Journal, 11: 89–101. https://doi.org/10.1002/rem.1017
Kaimi E., Mukaidani T., Miyoshi S., Tamaki M. (2006): Ryegrass enhancement of biodegradation in diesel-contaminated soil. Environmental and Experimental Botany, 55: 110–119. https://doi.org/10.1016/j.envexpbot.2004.10.005
Lim M.W., Von Lau E., Poh P.E. (2016): A comprehensive guide of remediation technologies for oil contaminated soil – Present works and future directions. Marine Pollution Bulletin, 109: 14–45. https://doi.org/10.1016/j.marpolbul.2016.04.023
Mager A., Wirkus L., Schoepfer E. (2016): Impact assessment of oil exploitation in South Sudan using multi-temporal Landsat imagery. Photogrammetrie-Fernerkundung-Geoinformation, 4: 211–223. https://doi.org/10.1127/pfg/2016/0300
Marinescu M., Lacatusu A., Gament E., Plopeanu G., Carabulea V., Marinescu M. (2017): A review of biological methods to remediate crude oil polluted the soil. Annals of the University of Craiova-Agriculture, Montanology, Cadastre Series, 46: 340–350.
Masu S., Albulescu M., Balasescu L.-C. (2014): Assessment on phytoremediation of crude oil polluted soils with Achillea millefolium and total petroleum hydrocarbons removal efficiency. Revista de Chimie, 65: 1103–1107.
Merkl N., Schultze-Kraft R., Infante C. (2004): Phytoremediation in the tropics – The effect of crude oil on the growth of tropical plants. Bioremediation Journal, 8: 177–184. https://doi.org/10.1080/10889860490887527
Merkl N., Schultze-Kraft R., Infante C. (2005): Assessment of tropical grasses and legumes for phytoremediation of petroleum-contaminated soils. Water, Air, and Soil Pollution, 165: 195–209. https://doi.org/10.1007/s11270-005-4979-y
Milala M.A., Blessing D., Abdulrahman A.A. (2015): Effects of spent engine oil on soil physicochemical properties of soil and microorganisms (bacteria). Asian Journal of Science and Technology, 6: 1032–1035.
Newman M.C. (2009): Fundamentals of Ecotoxicology. Boca Raton, London, New York, CRC Press.
Njoku K.L., Akinola M.O., Oboh B.O. (2016): Phytoremediation of crude oil contaminated soil using Glycine max (Merril); through phytoaccumulation or rhizosphere effect? Journal of Biological and Environmental Sciences, 10: 115–124.
Odjegba V.J., Sadiq A.O. (2002): Effects of spent engine oil on the growth parameters, chlorophyll and protein levels of Amaranthus hybridus L. Environmentalist, 22: 23–28. https://doi.org/10.1023/A:1014515924037
Okalebo J.R., Gathua K.W., Woomer P.L. (2002): Laboratory Methods of Soil and Plant Analysis. A Working Manual. Nairobi, TSBF-KARI, SSEA, SACRED, 29–68.
Pal S., Banat F., Almansoori A., Haija M.A. (2016): Review of technologies for biotreatment of refinery wastewaters: Progress, challenges and future opportunities. Environmental Technology Reviews, 5: 12–38. https://doi.org/10.1080/21622515.2016.1164252
Pragst F., Stieglitz K., Runge H., Runow K.-D., Quig D., Osborne R., Runge C., Ariki J. (2017): High concentrations of lead and barium in the hair of the rural population caused by water pollution in the Thar Jath oilfields in South Sudan. Forensic Science International, 274: 99–106. https://doi.org/10.1016/j.forsciint.2016.12.022
Ramsar Convention Secretariat (2010): The Ramsar Strategic Plan 2009–2015: Goals, Strategies, and Expectations for the Ramsar Convention’s Implementation for the Period 2009 to 2015. Ramsar Handbooks for the Wise Use of Wetlands. 4th Edition. Vol. 21. Gland Switzerland, Ramsar Convention Secretariat.
Reichenauer T.G., Germida J.J. (2008): Phytoremediation of organic contaminants in soil and groundwater. ChemSusChem, 1: 708–717. https://doi.org/10.1002/cssc.200800125
Ribeiro H., Mucha A.P., Almeida C.M.R., Bordalo A.A. (2014): Potential of phytoremediation for the removal of petroleum hydrocarbons in contaminated salt marsh sediments. Journal of Environmental Management, 137: 10–15. https://doi.org/10.1016/j.jenvman.2014.01.047
Rueskamp H., Ariki J., Stieglitz K., Treskatis C. (2014): Effect of oil exploration and production on the salinity of a marginally permeable aquifer system in the Thar Jath-, Mala- and Unity Oilfields, Southern Sudan. Zentralblatt für Geologie und Paläontologie, Teil I, 1: 95–115. https://doi.org/10.1127/zgpI/2014/0095-0115
Ruley J.A., Amonding A., Tumuhairwe J.B., Basamba T., Oryem-Origa H. (2017): Hydrocarbons in crude-oil production sites of Sudd-region South-Sudan: Implication on soil fertility and plant species risk. International Journal of Current Research, 9: 63070–63075.
Shahsavari E., Aburto-Medina A., Taha M., Ball A.S. (2016): Phytoremediation of PCBs and PAHs by grasses: A critical perspective. In: Ansari A.A., Gill S.S., Gill R., Lanza G.R., Newman L. (eds.): Phytoremediation. Cham, Springer, 978: 41811–41817.
Tutdel I.Y. (2010): Falling between the Cracks? Prospects for Environmental Litigation Arising from Oil Production in Southern Sudan. South Africa. Sudan, Institute of International Affairs.
Umeh A.C., Duan L., Naidu R., Semple K.T. (2017): Residual hydrophobic organic contaminants in soil: Are they a barrier to risk-based approaches for managing contaminated land? Environment International, 98: 18–34. https://doi.org/10.1016/j.envint.2016.09.025
Vogelmann E.S., Reichert J.M., Prevedello J., Awe G.O., Mataix-Solera J. (2013): Can occurrence of soil hydrophobicity promote the increase of aggregates stability? Catena, 110: 24–31. https://doi.org/10.1016/j.catena.2013.06.009
Wang J., Zhang X.F., Ling W.T., Liu R., Liu J., Kang F.X., Gao Y.Z. (2017): Contamination and health risk assessment of PAHs in soils and crops in industrial areas of the Yangtze River Delta region, China. Chemosphere, 168: 976–987. https://doi.org/10.1016/j.chemosphere.2016.10.113
Wang Y., Feng J., Lin Q.X., Lyu X.G., Wang X.Y., Wang G.P. (2013): Effects of crude oil contamination on soil physical and chemical properties in Momoge wetland of China. Chinese Geographical Science, 23: 708–715. https://doi.org/10.1007/s11769-013-0641-6
Zand A.D., Bidhendi G.N., Hoveidi H. (2016): Ability of white clover and alfalfa to grow in petroleum hydrocarbon-contaminated soil in Iran and their phytoremediation potential. Advances in Bioresearch, 7: 407–410.