Ki Young Cha

Works (4)

Updated: July 5th, 2023 15:46

2021 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)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (Web of Science; OpenAlex)
Source: Web Of Science
Added: September 21, 2020

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)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (Web of Science; OpenAlex)
Source: Web Of Science
Added: October 12, 2021

2012 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)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2012 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
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

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