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Full-Text Articles in Engineering
Detection Of Fecal Bacteria In Watersheds Impacted By Acid Mine Drainage, Claire Addison Mcdonald
Detection Of Fecal Bacteria In Watersheds Impacted By Acid Mine Drainage, Claire Addison Mcdonald
Graduate Theses, Dissertations, and Problem Reports
Escherichia coli, a fecal coliform, is an essential component of water quality monitoring, entering waterways through sewage deposits, agricultural land and livestock, and wildlife. Various fast and user-friendly methods for quantifying E. coli make it the principal indicator bacteria for fecal contamination. The most common methods for E. coli quantification are culture-based and involve cultivating samples onto nutrient agar and counting the visible colonies. However, E. coli can enter a viable but non-culturable (VBNC) state in stressful environments. Bacteria in a VBNC state are still alive but reduce key metabolic activities that typically encourage growth and division, allowing them …
Selective Precipitation And Recovery Of Rare Earth Elements From Acid Mine Drainage, Robyn Lauren Christoferson
Selective Precipitation And Recovery Of Rare Earth Elements From Acid Mine Drainage, Robyn Lauren Christoferson
Graduate Theses, Dissertations, and Problem Reports
The ability to secure rare earth elements (REEs) in the United States is of concern due to the rapid growth in demand and the monopolistic supply chain. The demand for REEs has skyrocketed in recent years due to the development of many green technologies. The United States and many other countries are currently reliant on China for REEs, who currently control greater than 90% of the global supply. Due to the severe impact of previous Chinese export quotas, it is important to lessen the reliance on importation and explore methods of recycling REEs from secondary sources. A secondary REE source …