Role of the dominant phototrophic bacterium in anaerobic swine waste lagoons, Rhodobacter sp PS9, in odor remediation

Sub, Young

doi:10.31274/rtd-180813-12889

Cited by 2 publications

(3 citation statements)

References 124 publications

(150 reference statements)

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“…The MIDI‐FAME profiles of nine isolates of purple, nonsulfur phototrophs obtained from the TS1PL and TS2PL systems were identified as members of the Rhodobacter genus. The isolation and characterization of these Rhodobacter isolates is described elsewhere (Do, 2001). The isolates were comprised primarily of the 18:1ω7 c /ω9 t /ω12 t (92.1 ± 1.8%; mean ± standard error of the mean; n = 9), 18:0 (2.4 ± 0.25%), and 16:1ω7 t / i 15:0 20H (1.6 ± 0.1) FAMEs.…”

Section: Resultsmentioning

confidence: 99%

Seasonal Variation in Microbial Communities and Organic Malodor Indicator Compound Concentrations in Various Types of Swine Manure Storage Systems

Merrill

Halverson

2002

J of Env Quality

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Anaerobic manure storage systems are one of the major contributors to the odor and environmental pollution associated with swine (Sus scrofa) production systems. The microbial ecology of manure storage systems and the relationships between microbial communities and odor production are largely unknown. In this study, we used community fatty acid methyl ester (FAME) analysis to generate lipid profiles to assess seasonal differences among microbial communities inhabiting various types of outdoor swine manure storage systems. Concurrently, we measured manure concentrations of several malodor indicator compounds as well as pH, temperature, and solids content. Principal components analysis (PCA) showed that there are differences in FAME profiles among the swine manure storage systems examined and most of the variation was in the relative abundance of 18:0, 18:1omega7t, 18:1omega7c/omega9t/omega12t, and 16:1omega7t/i15:0 2OH FAMEs. The PCA of the FAME profiles revealed that the phototrophic systems were more similar to each other and that the nonphototrophic systems were more similar to each other than they were to phototrophic lagoons. There were seasonal changes in the FAME profiles in the phototrophic systems and the concrete nonphototrophic basin (CNPB), and in one phototrophic system, the FAME profiles more closely resembled a CNPB FAME profile during the winter than the other phototrophic lagoons. In the phototrophic lagoon systems, there was a direct correlation between the abundance of the FAMEs identified in the PCA and manure concentrations of phenol, p-cresol, and 4-ethyl phenol. In the CNPB, there was a negative correlation between the total phenolics concentration and the 18:1omega7t FAME. Our results indicate that community FAME profiles could be used as a diagnostic tool for obtaining preliminary evidence that management practices are altering the system's microbial community to one that favors less air pollution potential.

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Section: Resultsmentioning

confidence: 99%

Seasonal Variation in Microbial Communities and Organic Malodor Indicator Compound Concentrations in Various Types of Swine Manure Storage Systems

Merrill

Halverson

2002

J of Env Quality

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“…One microbial event that has been observed by a number of investigators in relation to odors from swine waste storage lagoon systems is the temporal change in the pigmentation of the lagoons from brown to rose to pink (11,44,50,53). In field reports workers have described a relationship between decreased odor intensity and a change in lagoon color to purple.…”

mentioning

confidence: 99%

“…However, regardless of the management practices used, the concentration of odors from lagoons appears to be dependent on the microflora that develops in the system. For example, it is common practice to seed new anaerobic swine waste lagoons with material from working lagoons to accelerate the development of a stable microflora (56).One microbial event that has been observed by a number of investigators in relation to odors from swine waste storage lagoon systems is the temporal change in the pigmentation of the lagoons from brown to rose to pink (11,44,50,53). In field reports workers have described a relationship between decreased odor intensity and a change in lagoon color to purple.…”

mentioning

confidence: 99%

Role of Rhodobacter sp. Strain PS9, a Purple Non-Sulfur Photosynthetic Bacterium Isolated from an Anaerobic Swine Waste Lagoon, in Odor Remediation

Young¹,

Schmidt

Zahn³

et al. 2003

Appl Environ Microbiol

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Temporal pigmentation changes resulting from the development of a purple color in anaerobic swine waste lagoons were investigated during a 4-year period. The major purple photosynthetic bacterium responsible for these color changes and the corresponding reductions in odor was isolated from nine photosynthetic lagoons. By using morphological, physiological, and phylogenetic characterization methods we identified the predominant photosynthetic bacterium as a new strain of Rhodobacter, designated Rhodobacter sp. strain PS9. Improved swine production efficiency over the last few decades has resulted in a trend towards concentrated animal feeding operations (15). This trend has also resulted in increased private and government awareness of the potential effects of high-density production facilities on water and air quality associated with manure storage and treatment systems (3,32,43,45,46,52). Swine production facilities generally store manure in earthen, concrete, or steel-lined storage basin, pit, or lagoon systems for up to 14 months prior to land application (14,16). During storage, the effluent becomes anaerobic, and emission of malodorous compounds often becomes a problem. Several treatment systems have been described to control the release of odorous compounds from livestock wastes (26,56). Aeration, addition of chemical oxidants, and methanogenic digestors all reduce odors generated during storage and treatment (1,37). However, the use of these techniques has not received widespread acceptance because of the initial expense, management time, and equipment maintenance required. Other treatments designed to reduce odors from swine production facilities include addition of chemicals, including sodium nitrate and enzymes such as yucca extracts, and addition of mixed microbial populations to storage systems (56). These treatments are expensive and have produced inconsistent results (38).Because of cost and space limitations, anaerobic lagoons are often used for animal waste management systems. These lagoons serve as storage facilities and support anaerobic degradation of complex organic compounds. However, in the absence of oxygen and most other terminal electron acceptors, the incomplete oxidation of the complex organic compounds in livestock waste produces offensive by-products, such as volatile organic compounds (VOC), hydrogen sulfide, and ammonia (21,32,38,45,46,54). The concentration of odorous compounds from anaerobic lagoons can be minimized in many cases with good management practices (56). However, regardless of the management practices used, the concentration of odors from lagoons appears to be dependent on the microflora that develops in the system. For example, it is common practice to seed new anaerobic swine waste lagoons with material from working lagoons to accelerate the development of a stable microflora (56).One microbial event that has been observed by a number of investigators in relation to odors from swine waste storage lagoon systems is the temporal change in the pigmentation of the lagoo...

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Role of the dominant phototrophic bacterium in anaerobic swine waste lagoons, Rhodobacter sp PS9, in odor remediation

Cited by 2 publications

References 124 publications

Seasonal Variation in Microbial Communities and Organic Malodor Indicator Compound Concentrations in Various Types of Swine Manure Storage Systems

Seasonal Variation in Microbial Communities and Organic Malodor Indicator Compound Concentrations in Various Types of Swine Manure Storage Systems

Role of Rhodobacter sp. Strain PS9, a Purple Non-Sulfur Photosynthetic Bacterium Isolated from an Anaerobic Swine Waste Lagoon, in Odor Remediation

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