Ki Young Cha

Works (4)

Updated: July 5th, 2023 15:46

2021 article

Evaluating the impact of back diffusion on groundwater cleanup time

Borden, R. C., & Cha, K. Y. (2021, September 21). Journal of Contaminant Hydrology.

By: R. Borden n & K. Cha*

author keywords: Back diffusion; Cleanup time; Sensitivity; Parameters; Damkohler
MeSH headings : Diffusion; Groundwater; Models, Theoretical; Water Pollutants, Chemical / analysis; Water Wells
topics (OpenAlex): Groundwater flow and contamination studies; Hydraulic Fracturing and Reservoir Analysis; Geophysical and Geoelectrical Methods
TL;DR: This work identifies the aquifer and contaminant characteristics that have the greatest influence on the time (TOoM) after complete source removal for contaminant concentrations to decline by 1, 2 and 3 Orders ofMagnitude (T1, T2 and T3). (via Semantic Scholar)
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UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (Web of Science; OpenAlex)
Source: Web Of Science
Added: October 12, 2021

2020 article

A Physically Based Approach for Estimating Hydraulic Conductivity from HPT Pressure and Flowrate

Borden, R. C., Cha, K. Y., & Liu, G. (2020, August 28). Ground Water.

By: R. Borden n, K. Cha* & G. Liu*

MeSH headings : Electric Conductivity; Groundwater; Water; Water Movements; Water Wells
topics (OpenAlex): Groundwater flow and contamination studies; Hydraulic Fracturing and Reservoir Analysis; Geophysical and Geoelectrical Methods
TL;DR: Prior numerical modeling results are used to develop a relationship between probe advance rate V, probe diameter D, water injection rate Q, corrected pressure Pc, and hydraulic conductivity K and this equation provides a physically based approach for generating hydraulic Conductivity profiles with HPT tooling. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (Web of Science; OpenAlex)
Source: Web Of Science
Added: September 21, 2020

2011 article

Impact of injection system design on ISCO performance with permanganate — mathematical modeling results

Cha, K. Y., & Borden, R. C. (2011, October 24). Journal of Contaminant Hydrology.

By: K. Cha n & R. Borden*

author keywords: In situ chemical oxidation; ISCO; Permanganate; Models; Heterogeneity; Treatment efficiency
MeSH headings : Computer Simulation; Environmental Restoration and Remediation / methods; Groundwater / chemistry; Hydrocarbons, Chlorinated / chemistry; Models, Theoretical; Oxidation-Reduction; Potassium Permanganate / chemistry; Water Pollutants, Chemical / chemistry
topics (OpenAlex): Groundwater flow and contamination studies; Environmental remediation with nanomaterials; Landfill Environmental Impact Studies
TL;DR: Simulation results indicate that the mass of permanganate and volume of water injected has the greatest impact on aquifer contact efficiency and contaminant treatment efficiency. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2011 article

Kinetics of Permanganate Consumption by Natural Oxidant Demand in Aquifer Solids

Cha, K. Y., Crimi, M., Urynowicz, M. A., & Borden, R. C. (2011, November 21). Environmental Engineering Science.

By: K. Cha n, M. Crimi *, M. Urynowicz* & R. Borden n

author keywords: in situ chemical oxidation; ISCO; kinetics; models; natural oxidant demand; NOD; permanganate
topics (OpenAlex): Environmental remediation with nanomaterials; Advanced oxidation water treatment; Arsenic contamination and mitigation
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UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

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