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 16 of 16 for “"Phosphorus Recovery"”.
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Mapping the phosphorus recovery benefits from centralized infrastructure in the food-energy-water nexus
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Understanding the limits of struvite based phosphorus recovery through mechanistic modelling and data-driven performance evaluations
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-12-01
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Evaluation of the Feasibility of Struvite Precipitation from Domestic Wastewater as an Alternative Phosphorus Fertilizer Resource
… ore is the single global source material for phosphorus fertilizer production. Once these reserves are gone, agricultural production will be negatively impacted. There are currently no alternative phosphorus resources. However, phosphorus concentrations present in human excrement traveling …
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Community structure and function of mixed microalgal communities for nutrient recovery and the selection of lipid and carbohydrate accumulators for enhanced feedstock production in wastewater treatment
… to offer low-cost, low-input nitrogen and phosphorus recovery with effluent nutrient concentrations below the current limit-of-technology while simultaneously producing carbon-rich biomass. Despite this potential, current systems are operated empirically and suffer from unpredictable …
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The suitability of the microalgal metabolism for the recovery of nutrients from wastewater: the implications of solids residence time and diel cycles
The development of technologies for resource recovery from wastewater is an important part of modernizing our water infrastructure to become an integral part of a clean economy. Wastewater is a continuous source of renewable chemical and thermal energy as well as nutrient resources like nitrogen …
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Optimization of Phosphorus Removal and Mineral Characterization in Aerated Anaerobic Digestate with Divalent Cation Addition
… and other minerals often form at WRRFs when phosphorus-rich activated sludge from EBPR processes undergo anaerobic digestion. Without proper control, these minerals can cause scale deposits that clog pipes and damage dewatering equipment. However, managing when and where these minerals form …
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Microwave-based Pretreatment, Pathogen Fate and Microbial Population in a Dairy Manure Treatment System
… treating dairy manure for recovering biogas and phosphorus. Anaerobic digestion of dairy manure is commonly limited by slow fiber degradation, while one of the limitations to struvite precipitation is the availability of orthophosphate. The aim of this work was to study the use of microwave-based …
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Optimization of Struvite Recovery Utilizing Magnesium Oxide
… hydroxide (NaOH) used for sidestream struvite recovery from anaerobically digested supernatant (centrate) through the Pearl® process. MgO is produced from magnesite (MgCO3) calcination, and different calcination conditions can alter the quality and characteristics of the MgO product. It was …
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Understanding the impacts of supersaturation and seed crystal loading on struvite precipitation kinetics and collection efficiency
… treatment plants, installations of full-scale phosphorus removal with struvite precipitation processes is increasing. Utilities are increasingly understanding the necessity for higher levels of nutrient removal due to the regulatory pressures and the up and coming stringent discharge limits. To …
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Hydrothermal Liquefaction of Municipal Sludge: Feedstock Composition, Inorganic Interactions, and Co-Liquefaction as a Dewatering Alternative
… lime addition and an enhanced biological phosphorus removal (EBPR) facility, supplemented by controlled alkaline additive experiments and a co-liquefaction study. Reactions were carried out at 350 °C for 20–60 min at 10–20 wt.% solids in 75 mL Parr reactors, with products characterized by …
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Characterizing the mechanism and rate of calcium phosphate precipitation in aerobic granular sludge
… for technologies that are able to increase phosphorus removal while also recovering a valuable and marketable fertilizer product is growing. Aerobic granular sludge (AGS) is a promising technology that has demonstrated the ability to increase phosphorus removal while enhancing recovery …
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Kinetics based characterization of struvite dissolution
As phosphorus removal and recovery has become the new standard of wastewater treatment new technologies have quickly been implemented to meet the task. The Ostara Pearl is a crystallizer technology well known in the field of struvite precipitation for plants equipped with enhanced biological …
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Phosphorus speciation, agronomic performance and soil nutrient testing for waste recovered fertiliser use in Northern Irish soil
Phosphorus (P) runoff from agricultural land is causing P enrichment of surface waters, and is one of the main reasons why surficial water bodies in the United Kingdom (UK) are failing to meet Environmental Quality Standards (EQS) for fresh waters under the European Union (EU) Water Framework …
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Enhanced Biological Phosphorus Removal for Liquid Dairy Manure
Enhanced biological phosphorus removal (EBPR) has been widely used in municipal wastewater treatment, but no previous studies have examined the application of EBPR to treat dairy manure. This study was conducted to evaluate the (i) performance of pilot-scale EBPR systems treating liquid dairy …
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Ανάκτηση ανόργανων φωσφορικών από υδατικά διαλύματα
Η δέσμευση του P με την μορφή του στρουβίτη θεωρείται από τις εναλλακτικές μεθόδους ανάκτησης του P από τα υγρά απόβλητα. Ο στρουβίτης χρησιμοποιείται ως αργά αποδεσμευόμενο λίπασμα, ως υλικό για την σταθεροποίηση αμμωδών εδαφών και συμβάλλει στην αειφόρο ανάπτυξη. Η καταβύθιση του στρουβίτη σε …