Phytotoxicity of Contaminated Sand Containing Crude Oil Sludge on Ludwigia octovalvis

Abstract

This present research work was conducted to determine the phytotoxic effects on tropical native plants, Ludwigia octovalvis, in order to assess its application for phytoremediation of crude oil sludge in contaminated sand. For this purpose of study, L. octavalvis plants were planted in containers containing different proportion of spiked real crude oil sludge in sand (10%, 50%, and 100% (v/v)). Degradation of crude oil sludge by L. octovalvis was measured in terms of total petroleum hydrocarbons (TPH) and was compared with TPH degradation inside control crates without plants. The findings indicated that the average TPH removal after a prolonged 42-day exposure period was high. The degrees of TPH degradation were 67.0, 42.4 and 46.2% in sand spiked with real crude oil sludge at 10, 50 and 100% respectively, whereas the degradation was only 34.7, 29.1 and 20.5% for the unplanted containers at the same respective proportions of crude oil sludge in sand. These findings give evidence that L. octovalvis has the capability to degrade hydrocarbons in crude oil sludge.

Physiological and microbiological hormesis in sedge Eleocharis palustris induced by crude oil in phytoremediation of flooded clay soil

“…Various authors have reported that PR is a non-destructive technology in wetland that requires a long time to decontaminate soil, depending on the concentration of crude oil (Marcek et al 2000;Lee et al 2015;Shehzadi et al 2015;Policarpo et al 2020). Different wetland plants have shown to be able to remove TPH from soil: Scirpus grossus removed 66.6% of TPH in soil contaminated with 0.25% diesel-water; Typha domingensis, Phragmites australis, Leptochloa fusca, and Brachiaria mutica removed 99.13% of hydrocarbons in wetland soil contaminated with 319 mg/L of petroleum at month 18 (Almansoory et al 2017;Alanbary et al 2019). These authors argue that the use of PR in contaminated wetlands stabilizes the petroleum through the in uence of the abundant root systems, retaining and enveloping hydrocarbons, which in turn favors the establishment of microorganisms with CO metabolic capacity that can use carbon of biogenic and crude oil (Atlas and Bartha 2002;Cai et al 2010;Rivera-Cruz et al 2016).…”

“…The biological balance of oil-contaminated soil changes according to the living organisms that inhabit it. Soil contamination with hydrocarbons can even have a positive effect on the biology of the organisms that inhabit historically contaminated environments (González-Moscoso et al 2017;Orocio-Carrillo et al 2019;Alanbary et al 2019;Rodríguez-Uribe et al 2021).…”

“…Phytoremediation under anaerobic conditions is slower than under aerobic conditions but it has the potential to reduce the harmful impact of petroleum pollution by mineralizing hydrocarbons (Lawniczak et al, 2020). The following native wetland plants have shown the ability to remove TPH from ooded soils contaminated with oil, gasoline, or diesel: L. octovalvis (Alanbary et al 2019), Spartina alterni ora (Fleeger et al 2015), and S. grossus .…”

Phytotoxicity of Salvinia molesta in Diesel Exposure

“…Water samples of 100 mL each from growth medium were taken regularly in clean bottle from each aquarium on tasting time for all phytotreatment to analyse diesel as total petroleum hydrocarbon (TPH). Liquid-liquid extraction method, and gas chromatography were used to determine TPH concentration in the water [16] according to procedure by the Environmental Protection Agency, EPA Method 8041 [17]. Dichloromethane (Merch, Germany) was utilized as a solvent.…”

Crude oil induces plant growth and antioxidant production in Leersia hexandra Sw. A hydrophytic grass that rhizodegrades oil in Tabasco, Mexico.

“…At high concentrations, H 2 O 2 induces programmed cell death (Dat et al 2000), also called apoptosis. Cell death can occur as a result of the role played by H 2 O 2 in physicochemical reactions that convert high-molecular-weight acids into lipid peroxide and degrade cell wall proteins and nucleic acids (Alanbary et al 2019;Odukoya et al 2019;Sachdev et al 2021). Plant resistance to abiotic stress manifests in its foliage and root morphology, as well as in cell metabolism, including synthesis of H 2 O 2 and antioxidant molecules (Soares et al 2012;Siqueira-Soores et al 2013).…”