Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"supplemental carbon"”.
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Evaluation of Glycerol and Waste Alcohol as Supplemental Carbon Sources for Denitrification
Supplemental carbon has been successfully added and implemented at biological nutrient removal treatment plants all around the world in order to reach low nitrogen discharge limits. Although, methanol has been the most prevalent external electron donor used due to its low cost and effectiveness, …
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Growth and development of the megagametophyte of the vascular plant Selaginella (Lycopsida) on defined media
… on a variety of types and concentrations of carbon sources (glucose, sucrose, trehalose, and sorbitol), with and without B vitamins, in an attempt to induce apogamy. Without B vitamins growth was enhanced on glucose and trehalose, but not on sucrose. With B vitamins growth was enhanced on all …
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COMMUNITY ANALYSIS OF A UNIQUE FULL-SCALE WASTEWATER TREATMENT PLANT AS REVEALED BY 454-PYROSEQUENCING
… highly variable flow and utilizes glycerin as a supplemental carbon source due to low-strength carbon influent. In addition, the plant experienced an upset in 2012 with respect to excessive tardigrade growth. In response introduced sludge from another wastewater treatment plant (seed event) to …
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Evaluation of an Industrial Byproduct Glycol Mixture as a Carbon Source for Denitrification
… increasingly stringent total nitrogen limits, supplemental carbon must be added to improve the performance of the biological nutrient removal process. An industrial by-product that contained ethylene glycol and propylene glycol was used as a substitute carbon source for methanol in this study. …
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Denitrification of Recirculating Aquaculture System Waters Using an Upflow Biofilter and a Fermented Substrate
… biofilter using a fermentation generated carbon source to treat the high nitrate concentrations typically seen in recirculating aquaculture systems was studied using a synthetic nitrate wastewater supplied at two nitrate loadings, 1.13 and 2.52 kg NO3-N/m3/day. A supplemental carbon source …
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Mixotrophic Production of Omega-3 Fatty Acid-rich Alga Phaeodactylum tricornutum on Biodiesel-derived Crude Glycerol
… for crude glycerol is needed. Utilizing it as a carbon source in the fermentation of algae is one potential method for using this under-utilized byproduct. In this research, crude glycerol is used in the mixotrophic production of the alga, Phaeodactylum tricornutum, which is an eicosapentaenoic …
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Implementation of Acid/Gas Digestion Approach to Maximize Volatile Fatty Acids Production from Municipal Sludge and a Techno-economic Feasibility Study
… digester capacity, biosolids handling costs or supplemental carbon procurement expenses.</p>
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Optimization of intermittent aeration for increased nitrogen removal efficiency and improved settling
… 5-8 mg/L. Conventional BNR plants remove carbon and nitrogen simultaneously, which requires both increased volume (capital costs) and aeration energy demand (operating costs). As an alternative, HRSD is pilot testing an A/B process; a two-sludge system comprised of a carbon removal stage …