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Removal of Antibiotic Residues and C...

Woodward, Katherine A.

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Removal of Antibiotic Residues and Control of Antibiotics Movement from Cattle Industry Wastewater in Nebraska.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Removal of Antibiotic Residues and Control of Antibiotics Movement from Cattle Industry Wastewater in Nebraska./
作者:	Woodward, Katherine A.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
面頁冊數:	188 p.
附註:	Source: Dissertations Abstracts International, Volume: 81-12, Section: B.
Contained By:	Dissertations Abstracts International81-12B.
標題:	Environmental health. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27957352
ISBN:	9798645497330

Removal of Antibiotic Residues and Control of Antibiotics Movement from Cattle Industry Wastewater in Nebraska.
Woodward, Katherine A.

Removal of Antibiotic Residues and Control of Antibiotics Movement from Cattle Industry Wastewater in Nebraska. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 188 p.

Source: Dissertations Abstracts International, Volume: 81-12, Section: B.

Thesis (Ph.D.)--Tufts University, 2020.

This item must not be sold to any third party vendors.

Bacterial resistance to antibiotics existed before the development and widespread use of antibiotics. However, antibiotic resistance has only recently been recognized as a global health crisis. As such, efforts to improve antibiotic stewardship in human and animal health have become a priority. Antibiotics used in livestock production to treat and prevent infections may impact human health by promoting development and excretion of resistant bacteria or genes in animal manure. The use of medically important antibiotics is of particular concern. Little literature is available using environmental samples to determine the fate of antibiotics under field conditions through livestock manure and process wastewater, or the methods for removing these compounds prior to utilization of stored manure and wastewater. Dissertation Chapters described here are focused on this issue. Antibiotics partition to either the liquid or solid fraction once entering the wastewater, but understanding the mass in each compartment is necessary before useful treatment designs can be developed (Chapter 3). Options for pre-treating stored wastewater focusing on particle destabilization techniques that promote separation of the solid and liquid phases were evaluated for antibiotic removal potential (Chapter 4). Determining the effectiveness of electromagnetic induction (EMI) as a tool to measure spatial distribution, improving effectiveness of management practices to mitigate antibiotic transport was evaluated (Chapter 5). Based on research conducted, antibiotics appear to remain in the liquid fraction at a higher concentration than anticipated, and antibiotic interaction with suspended solids varied by antibiotic. Therefore, it may not be sufficient to remove suspended particles to protect surface and groundwater (Chapter 3). By treating the wastewater with alum or ferric chloride, at least 50% of ceftiofur and chlortetracycline could be removed, with up to 87% removal. However, tylosin removal required pre-treatment with diatomaceous earth (Chapter 4). Soil conductivity and antibiotic concentration are negatively correlated and a model for measuring spatial distribution of monensin and tylosin was developed. (Chapter 5). Through this research, the behavior of antibiotics used at a beef feedlot are better understood, paving the way for development of better management practices and the design of treatment processes to control transport of antibiotics from the feedlot to the environment.

ISBN: 9798645497330Subjects--Topical Terms:

543032
Environmental health.
Subjects--Index Terms:

Antibiotics

Removal of Antibiotic Residues and Control of Antibiotics Movement from Cattle Industry Wastewater in Nebraska.
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520 $a Bacterial resistance to antibiotics existed before the development and widespread use of antibiotics. However, antibiotic resistance has only recently been recognized as a global health crisis. As such, efforts to improve antibiotic stewardship in human and animal health have become a priority. Antibiotics used in livestock production to treat and prevent infections may impact human health by promoting development and excretion of resistant bacteria or genes in animal manure. The use of medically important antibiotics is of particular concern. Little literature is available using environmental samples to determine the fate of antibiotics under field conditions through livestock manure and process wastewater, or the methods for removing these compounds prior to utilization of stored manure and wastewater. Dissertation Chapters described here are focused on this issue. Antibiotics partition to either the liquid or solid fraction once entering the wastewater, but understanding the mass in each compartment is necessary before useful treatment designs can be developed (Chapter 3). Options for pre-treating stored wastewater focusing on particle destabilization techniques that promote separation of the solid and liquid phases were evaluated for antibiotic removal potential (Chapter 4). Determining the effectiveness of electromagnetic induction (EMI) as a tool to measure spatial distribution, improving effectiveness of management practices to mitigate antibiotic transport was evaluated (Chapter 5). Based on research conducted, antibiotics appear to remain in the liquid fraction at a higher concentration than anticipated, and antibiotic interaction with suspended solids varied by antibiotic. Therefore, it may not be sufficient to remove suspended particles to protect surface and groundwater (Chapter 3). By treating the wastewater with alum or ferric chloride, at least 50% of ceftiofur and chlortetracycline could be removed, with up to 87% removal. However, tylosin removal required pre-treatment with diatomaceous earth (Chapter 4). Soil conductivity and antibiotic concentration are negatively correlated and a model for measuring spatial distribution of monensin and tylosin was developed. (Chapter 5). Through this research, the behavior of antibiotics used at a beef feedlot are better understood, paving the way for development of better management practices and the design of treatment processes to control transport of antibiotics from the feedlot to the environment.
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