Remediation of Contaminated Soil and Groundwater Using Humic Acid in Permeable Reactive Barrier for Pipeline Leakage

ICPTT 2011 ◽  
2011 ◽  
Author(s):  
Yajun Wang ◽  
Jin-xi Wang ◽  
Chun-e Li
Keyword(s):  
Humic Acid ◽  
Contaminated Soil ◽  
Permeable Reactive Barrier ◽  
Reactive Barrier

Development of Natural Organic Matter as a Permeable Reactive Barrier Medium for Pipeline Leakage

2011 ◽  
Vol 243-249 ◽  
pp. 963-966 ◽  
Author(s):  
Ya Jun Wang ◽  
Jin Xi Wang
Keyword(s):  
Heavy Metal ◽  
Humic Acid ◽  
Contaminated Soil ◽  
Organic Contaminants ◽  
Polyaromatic Hydrocarbons ◽  
The United States ◽  
Permeable Reactive Barrier ◽  
Public Attention ◽  
Reactive Barrier ◽  
Wide Range

This paper presents the development of a new remediation technology of contaminated soil and groundwater using humic acid (HA) in permeable reactive barrier (PRB) for pipeline leakage. The objective of this study was to use humic acid that could be medium within a PRB to filter complex contaminated soil and groundwater containing chromium. Leakage of pollutants (such as hydrocarbon、gasoline、oil、wastewater、heavy metal et al) has a large economic and environmental impact. When a pipeline leak is large or undiscovered for a longer period of time, substantial volumes of gases and liquids can leak into the soil and groundwater, which can develop into dangerous situations involving costly remediation works. Traditional methods for remedying contaminated soil and groundwater from pipeline leakage, such as drilling and geochemical analysis, are destructive, time consuming and expensive. A PRB was determined to be the best option for remedying groundwater that has become contaminated with a wide range of organic contaminants (i.e., benzene, toluene, methylbenzene, xylene and polyaromatic hydrocarbons), heavy metals (i.e., lead and arsenic). PRB is installed in or down gradient from the flow path of a contaminant plume. The contaminants in the plume react with the media inside the barrier to either break the compound down into harmless products or immobilize contaminants by precipitation or sorption. It is made up of humic acid that reduce contaminants. With the development of industry and agriculture, environmental contamination has become more and more serious, especially heavy metal pollution, have been a major environmental issue, drawing much scientific and public attention. Chromium is identified as “priority pollutant” by the United States Environment Protection Agency (US EPA). the measurements show a significant increase of the adsorption of Cr (VI) because of the complexion reaction between HA and Cr (VI) occurred under acidic condition. It could be concluded that HA could be used effectively on remediation of Cr (VI)-contaminated soil and groundwater in a wide range of pH, with or without sunlight.

Lead (II) Removal from Contaminated Soils by Electrokinetic Remediation Coupled with Modified Eggshell Waste

2018 ◽  
Vol 777 ◽  
pp. 256-261 ◽  
Author(s):  
André Ribeiro ◽  
André Mota ◽  
Margarida Soares ◽  
Carlos Castro ◽  
Jorge Araújo ◽  
...  
Keyword(s):  
Contaminated Soil ◽  
Contaminated Soils ◽  
Removal Rate ◽  
Electrokinetic Remediation ◽  
Permeable Reactive Barrier ◽  
Inorganic Contaminants ◽  
Reactive Barrier ◽  
Eggshell Waste ◽  
Inorganic Fraction ◽  
Maximum Removal

Electrokinetic remediation deserves particular attention in soil treatment due to its peculiar advantages, including the capability of treating fine and low permeability materials, and achieving consolidation, dewatering and removal of salts and inorganic contaminants like heavy metals in a single stage. In this study, the remediation of artificially lead (II) contaminated soil by electrokinetic process, coupled with Eggshell Inorganic Fraction Powder (EGGIF) permeable reactive barrier (PRB), was investigated. An electric field of 2 V cm-1was applied and was used an EGGIF/soil ratio of 30 g kg-1 of contaminated soil for the preparation of the permeable reactive barrier (PRB) in each test. It was obtained high removal rates of lead in both experiments, especially near the cathode. In the normalized distance to cathode of 0.2 it was achieved a maximum removal rate of lead (II) of 68, 78 and 83% in initial lead (II) concentration of 500 mg-1, 200 mg-1 and 100 mg-1, respectively. EGGIF (Eggshell Inorganic Fraction) proved that can be used as permeable reactive barrier (PRB) since in all the performed tests were achieved adsorptions yields higher than 90%.

Remediation of Phenanthrene-Contaminated Soil by Electrokinetics Coupled with Iron/Carbon Permeable Reactive Barrier

2019 ◽  
Vol 36 (9) ◽  
pp. 1224-1235 ◽  
Author(s):  
Dajun Ren ◽  
Sheng Li ◽  
Jian Wu ◽  
Linjun Fu ◽  
Xiaoqing Zhang ◽  
...  
Keyword(s):  
Contaminated Soil ◽  
Permeable Reactive Barrier ◽  
Reactive Barrier
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