In situ soil flushing to remediate confined soil contaminated with PFOS- an innovative solution for emerging environmental issue

Chlorophyll-a (Chl-a) estimation in inland waters is an essential environmental issue. This study aimed to identify a band ratio model for Chl-a simulation using Landsat 8 OLI data and in situ Chl-a measuring in Lake Donghu. The band B1and B2, respectively at the wavelength of 443 nm and 483 nm, in the band ratio model [B1/B2] performed best in Chl-a estimation with the R2 of 0.6215. K-means cluster analysis based on water quality indexes (Chl-a, pH, DO, TN, TP, COD, Turbidity) was conducted to further improve the accuracy of inversion model. The MAPE of the optimal [B1/B2] algorithm has decreased by 4.81% and 39.87% respectively for 17 December 2017 (R2=0.7669, N=42) and 26 March 2018 (R2=0.9156, N=45).

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Laboratory evaluation of a biodegradable surfactant for In Situ soil flushing

Journal of Soil Contamination ◽

10.1080/15320389709383583 ◽

1997 ◽

Vol 6 (5) ◽

pp. 509-523 ◽

Cited By ~ 6

Author(s):

Clifford J. Bruell ◽

David K. Ryan ◽

Christopher C. Barker ◽

Joseph V. Lazzaro

Keyword(s):

Laboratory Evaluation ◽

Soil Flushing ◽

Biodegradable Surfactant

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Evaluating Effectiveness of In Situ Soil Flushing with Surfactants

ACS Symposium Series - Surfactant-Enhanced Subsurface Remediation ◽

10.1021/bk-1995-0594.ch012 ◽

1995 ◽

pp. 161-176 ◽

Cited By ~ 4

Author(s):

Katherine A. Bourbonais ◽

Geoffrey C. Compeau ◽

Lee K. MacClellan

Keyword(s):

Soil Flushing

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Mobility of Polyethylene Glycol-Modified Urethane Acrylate (PMUA) Nanoparticles in Soils

E3S Web of Conferences ◽

10.1051/e3sconf/202014101002 ◽

2020 ◽

Vol 141 ◽

pp. 01002

Author(s):

Warapong Tungittiplakorn ◽

Viranart Kongbua ◽

Anyamanee Tulaphan ◽

Kannika Kaewtawee

Keyword(s):

Organic Carbon ◽

Carbon Content ◽

Clay Soil ◽

Urethane Acrylate ◽

Organic Carbon Content ◽

Batch Experiments ◽

Clay Loam Soil ◽

Soil Flushing ◽

Loam Soil

Engineered nanoparticles (ENPs) have been reported for their potential to enhance in situ soil remediation due to their size and stability in water. These properties allow them to pass through soils with minimal loss in soil flushing or pump-and-treat process. The success of nanoparticle-facilitated soil flushing depends on the mobility of nanoparticles in the soil matrix. However, organic carbon content and soil texture can affect the mobility of nanoparticles in soils. This study compared the mobility of polyethylene glycol-modified urethane acrylate (PMUA) nanoparticles in three types of soils with varying organic contents. The results of two consecutive injection experiments showed that the recovery of injected nanoparticles through a soil column were 91 and 97% for sandy soil with carbon content of 0.01%, 81 and 85% for clay loam soil with organic carbon content of 1.20% and 67 and 73% for clay soil with organic carbon content of 3.25%. Furthermore, the batch experiments showed that the distribution coefficient (Kd) of PMUA nanoparticles between water and sandy soil, clay loam soil, and clay soil were 1.86, 2.34 and 3.01 mL/g, respectively. This conforms to the column experiment results and confirms that the increase in organic carbon content in soils increases the adsorption of PMUA nanoparticles, and therefore decreases the mobility of the nanoparticles through soils. Moreover, the distribution coefficient from batch experiments could be used to predict the mobility of PMUA nanoparticles in soils, and the viability of in situ PMUA-facilitated soil flushing method for specific contaminated soils.

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