Designing a permeable reactive barrier to treat TCE contaminated groundwater: Numerical modelling

Grajales-Mesa, S. Johana; Malina, Grzegorz; Kret, Ewa; Szklarczyk, Tadeusz

doi:10.24850/j-tyca-2020-03-03

Cited by 5 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The groundwater velocities previously reported in the literature are slow [13,17,69]. Therefore, a hydraulic retention time (HRT) of 24 h could simulate these groundwater flows, suggesting that the application of permeable reactive barriers using corn cobs could be effective in removing nitrate concentrations in groundwater under humid tropical conditions.…”

Section: • Denitrification Performancementioning

confidence: 97%

Enhanced Biological Nitrate Removal from Groundwater in Humid Tropical Regions Using Corn Cob-Based Permeable Reactive Barriers: A Case Study from Panama

Sánchez Hidalgo,

Ortega,

Deago

2024

Water

View full text Add to dashboard Cite

Nitrate contamination in groundwater is a global concern due to its widespread presence and consequential social, environmental, and economic ramifications. This study investigates the efficacy of biological denitrification in a humid tropical setting, utilizing corn cob in batch and column tests to assess nitrate removal under varying conditions. Batch tests demonstrated the nitrate removal efficiencies of 93.14%, 91.58%, 90.77%, and 98.74% for initial concentrations of 22.18 ± 2.82 mg/L, 27.3 mg/L, 69.1 ± 1.2 mg/L and 115.08 ± 1.88 mg/L, respectively. In the column test, the removal efficiency was 99.86%, 87.13%, and 74%, and the denitrification rate was 32.82, 53.43, and 83.53 mg NO3−-N/L d, for a hydraulic retention time (HRT) of 24 h, 16 h, and 7 h, respectively. Predominantly, nitrate removal occurred via biological denitrification, particularly favoring a 24 h HRT. The corn cob effectively removed high nitrate concentrations of up to 115 mg NO3−-N/L. Scanning electron microscopy and Fourier transform infrared spectroscopy revealed surface characteristic changes of the carbon source pre- and post-denitrification. This research sheds light on the potential of biological denitrification using corn cob in humid tropical environments, offering a promising avenue for addressing nitrate contamination challenges in groundwater systems.

show abstract

Section: • Denitrification Performancementioning

confidence: 97%

Enhanced Biological Nitrate Removal from Groundwater in Humid Tropical Regions Using Corn Cob-Based Permeable Reactive Barriers: A Case Study from Panama

Sánchez Hidalgo,

Ortega,

Deago

2024

Water

View full text Add to dashboard Cite

show abstract

“…Slurry wall building takes longer and costs more money than sheet piling [72]. Clay deposits, Carboniferous rocks, and steel sheet piling are used as an impermeable funnel in the funnel and gate PRB [73,74].…”

Section: Reactive and Impermeable (Filling) Media Selectionmentioning

confidence: 99%

“…Trenching wall can cost up to 70% of the entire building cost since it necessitates the use of specialized equipment. Material prices are low, accounting for just around 5-10% of overall installation expenses; however, delivery to the job site must be factored in [73]. Consequently, the researchers came at the following conclusions for PRB design after simulating many scenarios:…”

Section: Designing and Installation Considerationmentioning

confidence: 99%

See 1 more Smart Citation

Funnel and Gate Permeable Reactive Barrier Configuration for Contaminated Groundwater Remediation – Designing, Installation, and Modeling: A Review

Mokif,

Faisal

2023

Ecol. Eng. Environ. Technol.

View full text Add to dashboard Cite

Groundwater is a valuable resource whose purity is necessary for human survival. It serves as a significant source of water for household, industrial, and agricultural purposes. Traditional groundwater pollution remediation technologies include pump & treat, phase extraction, aeration gas of groundwater, bioremediation, and chemical oxidation. Permeable reactive barrier (PRB) is one of the most key technology being developed as alternatives to the pump and manage method for the remedying contaminated groundwater. An overview on the groundwater significant as important sources for water, sources of groundwater contamination, transport of contaminants, and groundwater remediation technologies have been discussed in this paper. In addition to reactive media, the design and installation of PRBs of funnel-gate configurations and their application as a remediation technique have been covered in this review. Finally reaction mechanisms in groundwater, contaminant transport governing equation, isotherms sorption models, kinetic sorption models, breakthrough curves modeling have been presented in this review. PRB technique provides financial benefits while also encouraging waste material reuse, so contributing to environmental sustainability. Funnel and gate PRB can offer one or more dense treatment areas for maximizing groundwater pollution plume capture. Funnel-gate PRB is characterized by smaller reaction area, ease in replacement and removal during the blocking of the reactive barrier by fine soil particles and reactive sediments.

show abstract

Topology optimization of in-pit codisposal of waste rocks and tailings to reduce advective contaminant transport to the environment

Rousseau

Pabst

2022

Struct Multidisc Optim

View full text Add to dashboard Cite

Designing a permeable reactive barrier to treat TCE contaminated groundwater: Numerical modelling

Cited by 5 publications

References 26 publications

Enhanced Biological Nitrate Removal from Groundwater in Humid Tropical Regions Using Corn Cob-Based Permeable Reactive Barriers: A Case Study from Panama

Enhanced Biological Nitrate Removal from Groundwater in Humid Tropical Regions Using Corn Cob-Based Permeable Reactive Barriers: A Case Study from Panama

Funnel and Gate Permeable Reactive Barrier Configuration for Contaminated Groundwater Remediation – Designing, Installation, and Modeling: A Review

Topology optimization of in-pit codisposal of waste rocks and tailings to reduce advective contaminant transport to the environment

Contact Info

Product

Resources

About