USE OF ALKYL POLYGLYCOSIDES IN THE REMEDIATION OF HEAVY METALS FROM HYDROCARBON CONTAMINATED SOILS..

Because of the accumulation of these chemicals in the environment, heavy metal poisoning of soil is a global issue, threatening human health, plants, and animals. Surfactant increased remediation of heavy metals such as Fe, Zn, Pb, Ni, Cr, and Cu in hydrocarbon contaminated soil samples from Eneka, Ozuoba, and Rukpokwu was examined in this study. The heavy metal contents in the soil samples were determined using Atomic Absorption Spectroscopy after they were polluted with medium and light crude oil. Before cleanup, results from medium crude contaminated soil samples revealed: For soil samples from Eneka, Cu was 5.82 mg/kg, Fe was 11897.00 mgkg-1, Zn was 129.00 mgkg-1, Pb was 6.80 mgkg-1, Ni was 11.60 mgkg-1, and Cr was 20.70 mgkg-1. After remediation, the metal concentrations were reduced to 3.80 mgkg-1, 13.00 mgkg-1, 29.40 mgkg-1, 0.012 mgkg-1, 0.008 mgkg-1, and 0.005 mgkg-1. Cu: 3.04 mgkg-1, Fe: 7197.00 mgkg-1, Zn: 51.80 mgkg-1, Pb: 3.10 mgkg-1, Ni: 11.90 mgkg-1, Cr: 37.90 mgkg-1 were the results of soil samples from Ozuoba before cleanup. After remediation, the metal concentrations were reduced to 1.27 mgkg-1, 17.00 mgkg-1, 19.40 mgkg-1, 0.012 mgkg-1, 0.008 mgkg-1, and 0.005 mgkg-1, respectively. Cu: 3.56 mgkg-1, Fe: 4188.00 mgkg-1, Zn: 111.00 mgkg-1, Pb: 1.04 mgkg-1, Ni: 9.50 mgkg-1, Cr: 34.50 mgkg-1 were the results of soil samples from Rukpokwu before cleanup. After remediation, heavy metal concentrations were reduced to 1.57 mgkg-1, 2034.00 mgkg-1, 16.00 mgkg-1, 0.012 mgkg-1, 0.008 mgkg-1, and 0.005 mgkg-1, respectively. Before cleanup, soil samples contaminated with light crude yielded the following results: For Eneka, Cu is 5.04 mgkg-1, Fe is 10495.00 mgkg-1, Zn is 97.50 mgkg-1, Pb is 4.70 mgkg-1, Ni is 8.44 mgkg-1, and Cr is 19.00 mgkg-1. After remediation, metal concentrations were reduced to 2.86 mgkg-1, 2080.00 mgkg-1, 27.20 mgkg-1, 0.012 mgkg-1, 0.008 mgkg-1, and 0.005 mgkg-1. The following are the results of soil samples taken in Ozuoba: Before remediation, Cu was 1.13 mgkg-1, Fe was 5504.00 mgkg-1, Zn was 43.00 mgkg-1, Pb was 2.70 mgkg-1, Ni was 12.10 mgkg-1, and Cr was 17.20 mgkg-1. Following remediation, the concentrations were lowered to 0.21 mgkg-1, 1909.00 mgkg-1, 12.20 mgkg-1, 0.012 mgkg-1, 0.008 mgkg-1, and 0.005 mgkg-1. Before cleanup, soil samples from Rukpokwu yielded the following results: Cu: 2.43 mgkg-1, Fe: 4572.00 mgkg-1, Zn: 65.30 mgkg-1, Pb: 0.86 mgkg-1, Ni: 13.70 mgkg-1, Cr: 20.70 mgkg-1, Cu: 2.43 mgkg-1, Fe: 4572.00 mgkg-1, Zn: 65.30 mgkg-1, Pb: 0.86 mgkg-1, Ni: 13.70 mgkg-1, Cr: 20.70 mgkg-1 Following remediation, the concentrations were lowered to 0.26 mgkg-1, 1841.00 mgkg-1, 15.30 mgkg-1, 0.012 mgkg-1, 0.008 mgkg-1, and 0.005 mgkg-1. The amounts of Pb, Ni, and Cr were reduced to below the detection limit of the equipment, according to the findings of this study. Fe and Zn had a high degree of success, with a reduction of 60 percent to 83 percent in all soil. Cu removal from the Eneka sample was lowest in medium crude polluted soil, at 33.51 percent, and highest in light crude contaminated soil, at 43.25 percent. The addition of an alkyl polyglucoside surfactant improved solubilization and surfactant-metal complexation, allowing these heavy metals to be removed from hydrocarbon-contaminated soils..

Please see the link :- https://www.ikprress.org/index.php/JOGEE/article/view/7150