Ki Young Cha

Works (4)

Updated: July 5th, 2023 15:46

2021 journal article

Evaluating the impact of back diffusion on groundwater cleanup time

JOURNAL OF CONTAMINANT HYDROLOGY, 243.

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
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 journal article

A Physically Based Approach for Estimating Hydraulic Conductivity fromHPTPressure and Flowrate

GROUNDWATER, 59(2), 266–272.

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

MeSH headings : Electric Conductivity; Groundwater; Water; Water Movements; Water Wells
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 journal article

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

JOURNAL OF CONTAMINANT HYDROLOGY, 128(1-4), 33–46.

By: K. Cha & 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
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 journal article

Kinetics of Permanganate Consumption by Natural Oxidant Demand in Aquifer Solids

ENVIRONMENTAL ENGINEERING SCIENCE, 29(7), 646–653.

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

author keywords: in situ chemical oxidation; ISCO; kinetics; models; natural oxidant demand; NOD; permanganate
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UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

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