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Articles 1 - 5 of 5
Full-Text Articles in Entire DC Network
Microbial Labilization And Diversification Of Pyrogenic Dissolved Organic Matter, Aleksandar I. Goranov, Andrew S. Wozniak, Kyle W. Bostick, Andrew R. Zimmerman, Siddhartha Mitra, Patrick G. Hatcher
Microbial Labilization And Diversification Of Pyrogenic Dissolved Organic Matter, Aleksandar I. Goranov, Andrew S. Wozniak, Kyle W. Bostick, Andrew R. Zimmerman, Siddhartha Mitra, Patrick G. Hatcher
Chemistry & Biochemistry Faculty Publications
With the increased occurrence of wildfires around the world, interest in the chemistry of pyrogenic organic matter (pyOM) and its fate in the environment has increased. Upon leaching from soils by rain events, significant amounts of dissolved pyOM (pyDOM) enter the aquatic environment and interact with microbial communities that are essential for cycling organic matter within the different biogeochemical cycles. To evaluate the biodegradability of pyDOM, aqueous extracts of laboratory-produced biochars were incubated with soil microbes, and the molecular changes to the composition of pyDOM were probed using ultrahigh-resolution mass spectrometry (Fourier transform–ion cyclotron resonance–mass spectrometry). Given that solar irradiation …
Labilization And Diversification Of Pyrogenic Dissolved Organic Matter By Microbes, Aleksandar I. Goranov, Andrew S. Wozniak, Kyle W. Bostick, Andrew R. Zimmerman, Siddhartha Mitra, Patrick G. Hatcher
Labilization And Diversification Of Pyrogenic Dissolved Organic Matter By Microbes, Aleksandar I. Goranov, Andrew S. Wozniak, Kyle W. Bostick, Andrew R. Zimmerman, Siddhartha Mitra, Patrick G. Hatcher
Chemistry & Biochemistry Faculty Publications
With the increased occurrence of forest fires around the world, interest in the chemistry of pyrogenic organic matter (pyOM) and its fate in the environment has increased. Upon leaching from soils by rain events, significant amounts of dissolved pyOM (pyDOM) enter the aquatic environment and interact with microbial communities that are essential for cycling organic matter within the different biogeochemical cycles. To evaluate the bio-reactivity of pyDOM, aqueous extracts of laboratory-produced chars were incubated with soil microbes and the molecular changes to the composition of pyDOM were probed using ultrahigh resolution mass spectrometry (Fourier transform – ion cyclotron resonance – …
Investigation Of Azo-Bond Cleavage In Methyl Orange And Direct Yellow 12 Using Soybean Peroxidase, Amanpreet Kaur
Investigation Of Azo-Bond Cleavage In Methyl Orange And Direct Yellow 12 Using Soybean Peroxidase, Amanpreet Kaur
Electronic Theses and Dissertations
Removal of dyes released in water by textile industries presents a major challenge for the researchers. Soybean peroxidase (SBP) has been widely explored for removal of a variety of toxic aromatics consisting of phenolic or anilino functional groups. Also, it has been known to possess the ability of azo-bond cleavage. This thesis was aimed to investigate azo-bond cleavage by SBP in the presence of hydrogen peroxide, if possible, in the absence of these functional groups. Direct Yellow 12 and azobenzene were chosen as a model compounds for this study. Experiments were conducted at a range of pHs, SBP and hydrogen …
Mobile Organic Compounds In Biochar. Relationships With Carbonization Degree And Bio-Oil Composition, Daniele Fabbri, Michele Ghidotti
Mobile Organic Compounds In Biochar. Relationships With Carbonization Degree And Bio-Oil Composition, Daniele Fabbri, Michele Ghidotti
Biochar: Production, Characterization and Applications
During biochar production, pyrolysis vapors released from biomass can interact with the porous aromatic biochar structure. Given the complex chemical composition of pyrolysis vapors, a wide range of organic compounds with different polarities and molecular mass can be retained in biochar with the potential to be released into the environment. The presence of these species will ultimately influence biochar quality and safety for soil applications. While our knowledge on the production, occurrence and fate of priority contaminants, such as polycyclic aromatic hydrocarbons, is increasing and led to the definition of threshold values, the relevance of non-regulated organic compounds has been …
Possible Sources And Impacts Of Biochar Water Extractable Organic Compounds On Aquatic Microorganisms, Cameron Russell Smith
Possible Sources And Impacts Of Biochar Water Extractable Organic Compounds On Aquatic Microorganisms, Cameron Russell Smith
Chemistry & Biochemistry Theses & Dissertations
Smokeless biomass pyrolysis with application of biochar as a soil amendment could be a significant approach for carbon sequestration to possibly control climate change for energy and environmental sustainability. If biochar were to be utilized as a soil amendment and a carbon sequestration agent at Gt C scales, the release of potentially toxic compounds into soils and associated hydrological systems, through soil rainwater runoff and leaching, might have negative consequences, in both agro-ecosystems and aquatic environmental systems. Therefore, the main focus of this dissertation was to study the sources and chemical composition of biochar water extractable (soluble) organic compounds and …