Scholars' Mine
Missouri S&T
Research Repository
Curtis Laws Wilson Library
400 W. 14th Street
Rolla, MO 65409-0060
scholarsmine@mst.edu
| Title: | Disinfection of swine wastes using Chlorine and Ultraviolet light | |
| Author (s): | Macauley, J. Qiang, Z. Adams, Craig D. Surampalli, Rao Y Mormile, Melanie R. | |
| Department/Lab Affiliations: | Biological Sciences Civil, Architectural & Environmental Engineering Environmental Research Center | |
| Keywords: | Antibiotic resistance Disinfection Swine wastewater Ultraviolet light | |
| Subject Terms: | Chlorine Ozone | |
| Issue Date: | 2006 | |
| Publisher: | Elsevier | |
| Citation: | Macauley, J., Qiang, Z., Adams, C., Surampalli, R., Mormile, M. (2006) “Disinfection of Swine Wastes Using Chlorine and Ultraviolet Light,” Water Research, 40, 2017-2026. | |
| Abstract: | Veterinary antibiotics are widely used at concentrated animal feeding operations (CAFOs) to prevent disease and promote growth of livestock. However, the majority of antibiotics are excreted from animals in urine, feces, and manure. Consequently, the lagoons used to store these wastes can act as reservoirs of antibiotics and antibiotic-resistant bacteria. There is currently no regulation or control of these systems to prevent the spread of these bacteria and their genes for antibiotic resistance into other environments. This study was conducted to determine the disinfection potential of chlorine, ultraviolet light and ozone against swine lagoon bacteria. Results indicate that a chlorine dose of 30 mg/L could achieve a 2.2–3.4 log bacteria reduction in lagoon samples. However, increasing the dose of chlorine did not significantly enhance the disinfection activity due to the presence of chlorine-resistant bacteria. The chlorine resistant bacteria were identified to be closely related to Bacillus subtilis and Bacillus licheniformis. A significant percentage of lagoon bacteria were not susceptible to the four selected antibiotics: chlortetracycline, lincomycin, sulfamethazine and tetracycline (TET). However, the presence of both chlorine and TET could inactivate all bacteria in one lagoon sample. The disinfection potential of UV irradiation and ozone was also examined. Ultraviolet light was an effective bacterial disinfectant, but was unlikely to be economically viable due to its high energy requirements. At an ozone dose of 100 mg/L, the bacteria inactivation efficiency could reach 3.3−3.9 log. | |
| Type: | Article - Journal text | |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. FULL COPYRIGHT INFORMATION: | |
| Publisher URL: | ||
| Link to this page: | ||
| Full Text: |
|
| title | Disinfection of swine wastes using Chlorine and Ultraviolet light | |
| contributor.author | Macauley, J. | |
| contributor.author | Qiang, Z. | |
| contributor.author | Adams, Craig D. | |
| contributor.author | Surampalli, Rao Y | |
| contributor.author | Mormile, Melanie R. | |
| contributor.deptlab | Biological Sciences | |
| contributor.deptlab | Civil, Architectural & Environmental Engineering | |
| contributor.deptlab | Environmental Research Center | |
| subject | Antibiotic resistance | |
| subject | Disinfection | |
| subject | Swine wastewater | |
| subject | Ultraviolet light | |
| subject.LCSH | Chlorine | |
| subject.LCSH | Ozone | |
| date.issued | 2006 | |
| publisher | Elsevier | |
| identifier.citation | Macauley, J., Qiang, Z., Adams, C., Surampalli, R., Mormile, M. (2006) “Disinfection of Swine Wastes Using Chlorine and Ultraviolet Light,” Water Research, 40, 2017-2026. | |
| identifier.pub.URI | ||
| description.abstract | Veterinary antibiotics are widely used at concentrated animal feeding operations (CAFOs) to prevent disease and promote growth of livestock. However, the majority of antibiotics are excreted from animals in urine, feces, and manure. Consequently, the lagoons used to store these wastes can act as reservoirs of antibiotics and antibiotic-resistant bacteria. There is currently no regulation or control of these systems to prevent the spread of these bacteria and their genes for antibiotic resistance into other environments. This study was conducted to determine the disinfection potential of chlorine, ultraviolet light and ozone against swine lagoon bacteria. Results indicate that a chlorine dose of 30 mg/L could achieve a 2.2–3.4 log bacteria reduction in lagoon samples. However, increasing the dose of chlorine did not significantly enhance the disinfection activity due to the presence of chlorine-resistant bacteria. The chlorine resistant bacteria were identified to be closely related to Bacillus subtilis and Bacillus licheniformis. A significant percentage of lagoon bacteria were not susceptible to the four selected antibiotics: chlortetracycline, lincomycin, sulfamethazine and tetracycline (TET). However, the presence of both chlorine and TET could inactivate all bacteria in one lagoon sample. The disinfection potential of UV irradiation and ozone was also examined. Ultraviolet light was an effective bacterial disinfectant, but was unlikely to be economically viable due to its high energy requirements. At an ozone dose of 100 mg/L, the bacteria inactivation efficiency could reach 3.3−3.9 log. | |
| type | Article - Journal | |
| type.DCMIType | text | |
| type.status | Postprint | |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. | |
| rights.URI | ||
| date.accessioned | 2008-04-10T19:10:05Z | |
| date.available | 2007-12-12T23:26:46Z | |
| identifier.persist.URI | ||
| Full Text |
|