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Full-Text Articles in Engineering
Indoor Premise Plumbing: The Relationship Between Water Stagnation, Chlorine Decay, And Total Organic Carbon Levels, Emerson M. Ringger, Andrew J. Whelton, Tolulope Odimayomi, Maryam Salehi
Indoor Premise Plumbing: The Relationship Between Water Stagnation, Chlorine Decay, And Total Organic Carbon Levels, Emerson M. Ringger, Andrew J. Whelton, Tolulope Odimayomi, Maryam Salehi
The Summer Undergraduate Research Fellowship (SURF) Symposium
Drinking water safety is critical to the health of populations worldwide, and modern plumbing infrastructure can influence drinking water chemical characteristics. Inside residential and commercial buildings however, water use and contact with different plumbing components can vary. For example, water can endure lengthy stagnation periods and residual disinfectant agents like chlorine can decay, leaving the water vulnerable to microbial growth. Plastic cross-linked polyethylene (PEX) pipes have become popular and have shown to influence water quality. While several studies have been carried out on chemical leaching from PEX piping, none were found that examined the role of pipe diameter in relation …
Short-Term Organic Carbon Release And Chlorine Disinfectant Decay For Cross-Linked Polyethylene (Pex) Plumbing Pipes, Miriam Tariq, Christian J. Ley, Maryam Salehi, Andrew J. Whelton
Short-Term Organic Carbon Release And Chlorine Disinfectant Decay For Cross-Linked Polyethylene (Pex) Plumbing Pipes, Miriam Tariq, Christian J. Ley, Maryam Salehi, Andrew J. Whelton
The Summer Undergraduate Research Fellowship (SURF) Symposium
The use of cross-linked polyethylene (PEX) plumbing pipes has grown in popularity for residential applications. However, PEX pipes can leach organic materials into water that can enable biofilm growth, cause off-tastes and -odors, and may react with disinfectants to form disinfection by-products (DBP). Varied manufacturing processes that are applied to create PEX pipes add to the complexity of understanding organic materials released. In this study, organic carbon release from three PEX pipe brands was monitored for up to five days using a series of stagnation periods. Seven stagnation periods of 1, 2, 4, 8, 24, 72, and 120 hours were …
Constructing Slow Sand Filters: Engineering Students’ Experiences In San José De Playón, Bolívar, Colombia, Sol Park, Sanyukta Gokhale, Kaylyn Colinco
Constructing Slow Sand Filters: Engineering Students’ Experiences In San José De Playón, Bolívar, Colombia, Sol Park, Sanyukta Gokhale, Kaylyn Colinco
Purdue Journal of Service-Learning and International Engagement
Sol Park, Sanyukta Gokhale, and Kaylyn Colinco were members of a Global Design Team (GDT) involved in providing innovative solutions to drinking water treatment in rural areas of developing countries. The immediate goal of the GDT in May 2016 was to deliver large slow sand filters (SSFs) to a rural school in Colombia. The experience placed the students in a small town 80 km (~50 miles) south of Cartagena, Colombia, called San José de Playón. The town pumps water from the Arroyo Reservoir, which is then consumed by the citizens and students at the local school (the only one in …
Transport Contaminant In Flowing Water For Improving Water Quality, Ghassani Feta Adani, Antoine Aubeneau, Carlo Andrej Alviar, Xuqing Xiong, Shizhang Wang
Transport Contaminant In Flowing Water For Improving Water Quality, Ghassani Feta Adani, Antoine Aubeneau, Carlo Andrej Alviar, Xuqing Xiong, Shizhang Wang
The Summer Undergraduate Research Fellowship (SURF) Symposium
Clean freshwater is fundamental to sustain human activities and the aquatic life. However, cities, industries, and agriculture wastes deteriorate water quality. For example, released fertilizer induces excess algal growth. This leads to major ecological problems such as eutrophication of freshwater ecosystems which has not only a great environmental cost impact, but can also affect the health and sustenance living of the people. This project investigates the transport of nitrate, a major plant fertilizer, in flowing freshwater. Streams and rivers can transform nitrate, thus mitigating its impact. Most of the biogeochemical reactions involved in nitrate removal take place where microorganisms usually …
Influence Of Stormwater Control Measures On Watershed Hydrology And Biogeochemical Cycling, Colin D. Bell
Influence Of Stormwater Control Measures On Watershed Hydrology And Biogeochemical Cycling, Colin D. Bell
Open Access Dissertations
Urban development replaces vegetation with impervious surfaces and natural drainage channels with pipe networks that quicken flow paths and alter hydrologic regimes. Additionally, the import of food, application of fertilizer to lawns and gardens, and heightened atmospheric deposition increases nutrient availability in urban landscapes. These excess nutrients are ultimately routed to streams through the pipe networks before it can be processed by the vegetation and microorganisms of the landscape. This combination of physical and chemical disturbances impacts stream ecosystems and degrades their ability to perform valuable services such as removal of nutrients, degradation of pollutants, and provision of recreational and …