Soil Lead Bioavailability and in situ Remediation of Lead-Contaminated Soils

ChemInform ◽  
2004 ◽  
Vol 35 (27) ◽  
Author(s):  
Ganga M. Hettiarachchi ◽  
Gary M. Pierzynski
Keyword(s):  
Contaminated Soils ◽  
In Situ Remediation ◽  
Soil Lead

Soil lead bioavailability and in situ remediation of lead-contaminated soils: A review

2004 ◽  
Vol 23 (1) ◽  
pp. 78-93 ◽  
Author(s):  
Ganga M. Hettiarachchi ◽  
Gary M. Pierzynski
Keyword(s):  
Contaminated Soils ◽  
In Situ Remediation ◽  
Soil Lead

In situ multiphase fluidization ("upflow washing") for the remediation of hydrocarbon contaminated sands

1998 ◽  
Vol 35 (6) ◽  
pp. 938-960 ◽  
Author(s):  
Robert K Niven ◽  
Nasser Khalili
Keyword(s):  
Theoretical Analysis ◽  
Contaminated Soils ◽  
Fixed Bed ◽  
Fine Sand ◽  
In Situ Remediation ◽  
Pump And Treat ◽  
Wide Range ◽  
Phase Liquid ◽  
Regime Map

A new in situ remediation method is described, "upflow washing," in which contaminants are flushed to the surface within an in situ fluidized zone produced by a jet inserted into a granular formation. The suitability of the method for LNAPL (light non-aqueous phase liquid) remediation is examined by experiments on diesel-contaminated soils within column and tank settings. The experiments indicate significant reductions in diesel levels (96-99.9%) may be achieved by fluidization with water and gas (gas-liquid upflow washing, GLUW) for a wide range of initial diesel concentrations (10 000 to 150 000 mg/kg) and for soil fines contents of 0 to at least 10%. Final diesel levels of <1000 mg/kg in a uniform fine sand and <200 mg/kg in clayey sands can be achieved. The efficiency is much higher than that of fixed bed flushing (simulated pump-and-treat), as the method overcomes the trapping of NAPL ganglia. Fludization with water alone (liquid upflow washing, LUW) is less effective than fixed bed flushing in the uniform sand, but approaches that of GLUW in clayey and silty sands. The results are explained by theoretical analysis of the removability of isolated NAPL droplets and mixed solid - NAPL particles from a fluidized bed due to buoyancy and elutriation, which may be represented using a "removability regime map" for the diesel-water-sand system.Key words: fluidization, in situ, remediation, NAPL, diesel.

scholarly journals Wicking Salts from Brine‐Contaminated Soils: A Potential Method for In Situ Remediation

ael ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 180069 ◽  
Author(s):  
Aaron W. Green ◽  
Thomas M. DeSutter ◽  
Aaron L. M. Daigh ◽  
Miranda A. Meehan
Keyword(s):  
Contaminated Soils ◽  
Potential Method ◽  
In Situ Remediation

Multivariate data analysis for bioremediation of contaminated soil through Interactions between heavy metals, microbes and plants

2013 ◽  
Vol 1 (1) ◽  
pp. 21-28
Author(s):  
Basel Natsheh ◽  
Nawaf Abu-Khalaf ◽  
Tahseen Sayara ◽  
Saed Khayat ◽  
Mazen Salman
Keyword(s):  
Contaminated Soil ◽  
Contaminated Soils ◽  
Sewage Effluent ◽  
In Situ Remediation ◽  
Promising Technique ◽  
Plant Parts ◽  
Complex Interactions ◽  
Fungal Inoculation ◽  
Soil Metal

Plant-assisted bioremediation (phytoremediation) is a promising technique for in-situ remediation of contaminated soils. Enhancement of phytoremediation processes requires a sound understanding of the complex interactions in the rhizosphere. This work presents a Pot experiment was conducted under green house conditions to test the effect of fungal inoculation on remediating heavy metal (HM) contaminated soil treated with sewage effluent for several years. Canola crop was used as accumulator plants. Results demonstrated that the dry matter yield of tested crops were significantly higher in soil irrigated for 50 years with sewage effluent than that in 20 years sewage effluent irrigated soil. Metal uptake and accumulation in different plant parts (shoot and root) was enhanced after inoculation with Aspergillus parasiticus (F1) and Fusarium oxysporum (F2). The reate of HM accumulation as higher in in soil treated irrigated sewage effluent for 50 years than that in 20 years sewage irrigated soil.

Multivariate data analysis for bioremediation of contaminated soil through Interactions between heavy metals, microbes and plants

2013 ◽  
Vol 1 (1) ◽  
pp. 21-28
Author(s):  
Basel Natsheh ◽  
Nawaf Abu-Khalaf ◽  
Tahseen Sayara ◽  
Saed Khayat ◽  
Mazen Salman
Keyword(s):  
Contaminated Soil ◽  
Contaminated Soils ◽  
Sewage Effluent ◽  
In Situ Remediation ◽  
Promising Technique ◽  
Plant Parts ◽  
Complex Interactions ◽  
Fungal Inoculation ◽  
Soil Metal

Plant-assisted bioremediation (phytoremediation) is a promising technique for in-situ remediation of contaminated soils. Enhancement of phytoremediation processes requires a sound understanding of the complex interactions in the rhizosphere. This work presents a Pot experiment was conducted under green house conditions to test the effect of fungal inoculation on remediating heavy metal (HM) contaminated soil treated with sewage effluent for several years. Canola crop was used as accumulator plants. Results demonstrated that the dry matter yield of tested crops were significantly higher in soil irrigated for 50 years with sewage effluent than that in 20 years sewage effluent irrigated soil. Metal uptake and accumulation in different plant parts (shoot and root) was enhanced after inoculation with Aspergillus parasiticus (F1) and Fusarium oxysporum (F2). The reate of HM accumulation as higher in in soil treated irrigated sewage effluent for 50 years than that in 20 years sewage irrigated soil.

Phosphorus Amendment Efficacy for In Situ Remediation of Soil Lead Depends on the Bioaccessible Method

2016 ◽  
Vol 45 (1) ◽  
pp. 37-44 ◽  
Author(s):  
John F. Obrycki ◽  
Nicholas T. Basta ◽  
Kirk Scheckel ◽  
Brooke N. Stevens ◽  
Kristen K. Minca
Keyword(s):  
In Situ Remediation ◽  
Soil Lead ◽  
Remediation Of Soil
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