Remediation of Crude Oil Contaminated Soil, Using Organic Supplement: Effects on Growth and Heavy Metal Uptake in Cassava (Manihot esculenta Crantz)

Field experiments were conducted in 2016 and repeated in 2017 to evaluate the effectiveness of Oil Palm Bunch Ash (OPBA) and Dried Poultry manure (DPM) as organic supplement, applied singly and in combination on growth properties and heavy metal uptake of cassava cultivars grown in crude-oil contaminated soil of the Niger Delta Region, Nigeria. There were four different organic amendments viz: DPM, OPBA, OPBA +DPM and control using TMS 30572, NR8082 and local variety as test crops. Results were elaborated statistically with the use of three-by-four factor variance analysis with ANOVA. Effect of various application of amendment on morphometric parameters of cultivars revealed in 2017 that at 36 weeks after sprouting (WAS), DPM and OPBA +DPM significantly (P≤ 0.05) enhanced plant heights of TMS 3572 and LV but had no influence on number of nodes, stem girth and leaf area. However, the interactions resulted in significant (P≤ 0.05) uptake and concentration of the heavy metals Fe, Cu, and Pb in leaves and Fe in roots ofTMS30572 and NR8082, indicating efficient metal removal by these varieties. Results of amendment also revealed remarkable increment in bacterial and fungal (from 104 to 106 and 103 to 104 ) populations respectively, correlating with reduction in soil total petroleum hydrocarbon (TPH) from 156.45 mg/kg to 146.73 mg/Kg. This is observed to diminish oil toxicity and improve soil status. The response of these cassava varieties to crude oil contamination appears to be optimistic. Consequently crop farmers are adviced against planting cassava and other arable crop at crude oil impacted soil for the risk of uptake of heavy metal in crop tissues. Keywords: Remediation, Heavy metal, Oil-contaminated soil, Organic amendment, Growth properties, Cassava

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Investigation on Heavy Metal Removal from a Crude Oil Contaminated Soil using Rhamnolipid Biosurfactant as a New Eco-Friendly Method

Tenside Surfactants Detergents ◽

10.3139/113.110710 ◽

2020 ◽

Vol 57 (6) ◽

pp. 515-520

Author(s):

Nayyereh Kholghi ◽

Hossein Amani ◽

Shokoufeh Malekmahmoodi ◽

Alireza Amiri

Keyword(s):

Heavy Metal ◽

Crude Oil ◽

Contaminated Soil ◽

Metal Removal ◽

Heavy Metal Removal ◽

Rhamnolipid Biosurfactant

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Kestabilan Inokulan Azotobacter selama Penyimpanan pada Dua Suhu

Jurnal Natur Indonesia ◽

10.31258/jnat.14.1.52-55 ◽

2012 ◽

Vol 14 (1) ◽

pp. 52

Author(s):

Reginawanti Hindersah ◽

Rija Sudirja

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Root Growth ◽

Contaminated Soil ◽

Metal Uptake ◽

Room Temperature ◽

Heavy Metal Uptake ◽

Total N ◽

The Stability ◽

Temperature Storage

Azotobacter might be used as biological agents in bioremediation of heavy metal-contaminated soil since this rhizobacteria produceexopolysachharides (EPS) that mobilize soil heavy metals, and phytohormones that regulate root growth. So that heavy metal uptake bythe roots could be increased. The objective of this research was to verify the stability of EPS and phytohormones in Azotobacter liquidinoculants during four months in different temperature storage. Liquid inoculants has been produced in EPS-induced media and stored in200C and room temperature (24-270C) during four months. The results showed that the better temperature storage was room temperatureinstead of 20 0C since pH, total N, and EPS and phytohormones content was relatively stable during storage.

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Synergistic association of endophytic fungi enhances tolerance, growth, and heavy metal uptake of Alocasia calidora in landfill contaminated soil

Applied Soil Ecology ◽

10.1016/j.apsoil.2021.104307 ◽

2022 ◽

Vol 170 ◽

pp. 104307

Author(s):

Auwalu Hassan ◽

Agamuthu Pariatamby ◽

Innocent C. Ossai ◽

Aziz Ahmed ◽

Mohd Afzanizam Muda ◽

...

Keyword(s):

Heavy Metal ◽

Endophytic Fungi ◽

Contaminated Soil ◽

Metal Uptake ◽

Heavy Metal Uptake

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Effects of AM Inoculation and Organic Amendment, Alone or in Combination, on Growth, P Nutrition, and Heavy-Metal Uptake of Tobacco in Pb-Cd-Contaminated Soil

Journal of Plant Growth Regulation ◽

10.1007/s00344-012-9265-9 ◽

2012 ◽

Vol 31 (4) ◽

pp. 549-559 ◽

Cited By ~ 33

Author(s):

Fa Yuan Wang ◽

Ling Wang ◽

Zhao Yong Shi ◽

You Jun Li ◽

Zhi Mei Song

Keyword(s):

Heavy Metal ◽

Contaminated Soil ◽

Metal Uptake ◽

Organic Amendment ◽

Heavy Metal Uptake ◽

P Nutrition

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Effects of Soil Amendments on Heavy Metal Immobilization and Accumulation by Maize Grown in a Multiple-Metal-Contaminated Soil and Their Potential for Safe Crop Production

Toxics ◽

10.3390/toxics8040102 ◽

2020 ◽

Vol 8 (4) ◽

pp. 102

Author(s):

Fayuan Wang ◽

Shuqi Zhang ◽

Peng Cheng ◽

Shuwu Zhang ◽

Yuhuan Sun

Keyword(s):

Heavy Metal ◽

Plant Growth ◽

Contaminated Soil ◽

Crop Production ◽

Metal Uptake ◽

Soil Amendments ◽

Heavy Metal Uptake ◽

X Ray ◽

Metal Immobilization ◽

Heavy Metal Immobilization

Soil amendments have been proposed for immobilizing metallic contaminants, thus reducing their uptake by plants. For the safe production of crops in contaminated soil, there is a need to select suitable amendments that can mitigate heavy metal uptake and enhance crop yield. The present experiment compared the effects of three amendments, hydroxyapatite (HAP), organic manure (OM), and biochar (BC), on plant growth and heavy metal accumulation by maize in an acidic soil contaminated with Cd, Pb, and Zn, and their potential for safe crop production. Toxicity characteristic leaching procedure (TCLP) tests, energy dispersive X-ray spectroscopy (EDS) analysis, and X-ray diffraction (XRD) analysis were used to evaluate the effectiveness and mechanisms of heavy metal immobilization by the amendments. The results showed that shoot and root biomass was significantly increased by HAP and 1% OM, with an order of 1% HAP > 0.1% HAP > 1% OM, but not changed by 0.1% OM and BC (0.1% and 1%). HAP significantly decreased Cd, Pb, and Zn concentrations in both shoots and roots, and the effects were more pronounced at the higher doses. OM decreased the shoot Cd and Pb concentrations and root Zn concentrations, but only 1% OM decreased the shoot Zn and root Pb concentrations. BC decreased the shoot Cd and Pb concentrations, but decreased the shoot Zn and root Pb concentrations only at 1%. HAP decreased the translocation factors (TFs) of Cd, Pb, and Zn (except at the 0.1% dose). OM and BC decreased the TFs of Cd and Zn, respectively, at the 1% dose but showed no significant effects in other cases. Overall, plant P, K, Fe, and Cu nutrition was improved by HAP and 1% OM, but not by 0.1 OM and BC. Soil pH was significantly increased by HAP, 1% OM, and 1% BC, following an order of 1% HAP > 1% OM > 0.1% HAP > 1% BC. The TCLP levels for Cd, Pb, and Zn were significantly reduced by HAP, which can be partly attributed to its liming effects and the formation of sparingly soluble Cd-, Pb-, and Zn-P-containing minerals in the HAP-amended soils. To some extent, all the amendments positively influenced plant and soil traits, but HAP was the optimal one for stabilizing heavy metals, reducing heavy metal uptake, and promoting plant growth in the contaminated soil, suggesting its potential for safe crop production.

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