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- All Subjects: water treatment
- Creators: Ganesh, Tirupalavanam
- Creators: Atkinson, Ariel
Description
The purpose of this experiment was to determine how effective electromagnetic waves could be at reducing calcium hardness in a body of water as well as see how the makeup of the water (free calcium levels, total calcium levels, pH, alkalinity, and surface tension) were affected over the span of testing. A vary of four different nominal calcium hardness levels, ranging from 80 mg/L \u2014 240 mg/L of calcium in terms of calcium hardness were tested over a span of thirty minutes with samples being taking once every ten minutes. Data collection indicates that there is a noticeable decrease in free calcium, total calcium, and pH over a span of thirty minutes using the electromagnetic device, however, no noticeable trend can be made for the alkalinity and surface tension. Errors can be stated to be caused by lack of protocol for calcium hardness creation as well as needed updates for procedures such as alkalinity and surface tension testing. It can be deduced that the process is favorable, but it cannot be concluded as to whether to not this device can become a sustainable alternative to salt-based water softeners.
ContributorsNnorom, Njideka Cynthia (Author) / Fox, Peter (Thesis director) / Atkinson, Ariel (Committee member) / Chemical Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
Access to clean drinking water has been identified by the National Academy of Engineering as one of the Grand Challenges of the 21st century. This thesis investigated clean drinking water access in the greater Phoenix area, specifically with regards to drinking water quality standards and management strategies. This research report provides an introduction to water quality, treatment, and management; a background on the Salt River Project; and an analysis on source water mix and drinking water quality indicators for water delivered to Tempe, Arizona water treatment facilities.
ContributorsMercer, Rebecca Nicole (Author) / Ganesh, Tirupalavanam (Thesis director) / Trowbridge, Amy (Committee member) / Industrial, Systems (Contributor) / School of Sustainability (Contributor) / Barrett, The Honors College (Contributor)
Created2016-12
Description
The goal of this research study was to empirically study a poster-based messaging campaign in comparison to that of a project-based learning approach in assessing the effectiveness of these methods in conveying the scope of biomedical engineering to upper elementary school students. For the purpose of this honors thesis, this research paper specifically reflects and analyzes the first stage of this study, the poster-based messaging campaign. 6th grade students received socially relevant messaging of juniors and seniors at ASU achieving their biomedical aspirations, and received information regarding four crucial themes of biomedical engineering via daily presentations and a website. Their learning was tracked over the course of the weeklong immersion program through a pre/post assessment. This data was then analyzed through the Wilcoxon matched pairs test to determine whether the change in biomedical engineering awareness was statistically significant. It was determined that a poster-based messaging campaign indeed increased awareness of socially relevant themes within biomedical engineering, and provided researchers with tangible ways to revise the study before a second round of implementation. The next stage of the study aims to explain biomedical engineering through engaging activities that stimulate making while emphasizing design-aesthetic appeal and engineering habits of mind such as creativity, teamwork, and communication.
ContributorsSwaminathan, Swetha Anu (Author) / Ganesh, Tirupalavanam (Thesis director) / Shrake, Scott (Committee member) / Harrington Bioengineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05