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 20 of 26 for “"total alkalinity"”.
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Effects of liming on plankton and young-of-the-year bluegill growth in Flat Top Lake, West Virginia
… (west) arm after the treatment which made total alkalinity similar between the arms within 1 month. Phytoplankton gross productivity and chlorophyll a was similar between the arms for the pre- and post-treatment samples as well as for the period after the treatment when total alkalinity was …
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Seasonality of the marine carbonate system in the southern Benguela nutrient stoichiometry, alkalinity production, and CO flux
… the processes driving bulk stoichiometry, alkalinity production on the continental shelf, and the air-sea flux of CO2. Monthly samples were taken along the St. Helena Bay Monitoring Line in the southern Benguela for ten of the months in 2010. Samples were analysed for dissolved inorganic …
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Automated alkalinity sensing system
… automated benchtop measuring system for total alkalinity, one of the important parameters for monitoring marine carbonate chemistry. This system addresses the need for a low-cost alkalinity sensing system that can be deployed in great numbers to provide the large data sets needed for to …
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Monitoring Anthropogenic Carbon in Cape Cod Bay
… and carbon uptake. Parameters such as pH on the total scale (pHₜ), Dissolved Inorganic Carbon (DIC), and Total Alkalinity (TA) contribute to understanding the health of coastal waters such as Cape Cod Bay, yet are resource-intensive to measure and have little historical data in Cape Cod Bay. …
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Concentrations of Selected Metals in Benthic Algae From the Headwaters Region of Crane Creek, Stone County, Missouri
… often not detectable. Water temperature, pH, and total alkalinity were constant throughout the study and probably not a factor in the demonstrated variations.
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Evaluation of alternative pretreatment methods for use in direct filtration water treatment
… quality parameters monitored were turbidity, pH, total alkalinity, total hardness, and total solids. A brief literature review for direct filtration and coagulation-flocculation theory was also conducted. The results of this investigation indicated that reduced retention times in the pretreatment …
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Freshwater Endmembers Impacting Carbonate Chemistry in the Mississippi Sound
… focused on dissolved inorganic carbon (DIC) and total alkalinity (TA) in the Mississippi Sound in order to understand the influence of local rivers that supply alkalinity to the area and buffer against ocean acidification. This area receives large fluxes of freshwater from local rivers, in …
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Hydrogeology of a sanitary landfill, Mandan, North Dakota
… where there are increases in calcium, magnesium, total hardiness, bicarbonate, total alkalinity, total dissolved solids, and chloride and decreases in sulfate and pH. </p><p> Leachate production is low because of lack of moisture, low temperature, and large amounts cf cellulose-based refuse. …
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Start-up and shock loading characteristics of a rotating biological contactor package plant
… for COD, TKN, NH₃-N, Org-N, NO⁻₃-N, SS, DO and total alkalinity. Based on an analysis of the results obtained it was determined that a start-up period of approximately 30 days was required to develop a sufficient growth of biofilm mass to reach"steady state" conditions, i.e., maximum consistent …
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Hydroxypropylation of lignin and lignin-like model compounds
… that the reaction rate depended on the ratio of total alkalinity to total acidity in the system which was found to be related with KOH concentration, lignin content, and lignin structure. Particularly, carboxyl groups of lignin resulted in high acidity and low homopolymerization rate. It was also …
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Analysis of temporal and spatial changes in major dissolved salts in the Vaal River system over a 40 year period
… the salinity of the Vaal River was majorly total alkalinity (TAL) and sulfate (SO4) dominated, with a substantial amount of Calcium (Ca2+). However, the concentration of other salts remained relatively constant during the duration of study. Analysis of 5-year averages of TAL, SO4 and total …
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Multivariate Analysis of Canadian Water Quality Data
… parameters: pH, specific conductance (SC), and total phosphorus (TP). The second matrix (Matrix B) included more variables: calcium (Ca), chloride (Cl), total alkalinity (T_ALK), dissolved oxygen (DO), water temperature (WT), pH, SC and TP; for a subset of 42 sites. Landscape characteristics …
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How does plankton distribution and activity influence the variability of carbon dioxide uptake in the North Atlantic?
… had on SST. Discrete dissolved inorganic carbon, total alkalinity and dissolved oxygen samples were collected during 4 voyages between April 2012 and February 2013. Using these measurements this study successfully developed and implemented a simple and inexpensive technique to estimate net …
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Water Quality Spatial Heterogeneity in Wastewater Stabilization Ponds at Elevated pH
… were removed within the WSP, and that pH, DO, alkalinity, and total NH3 increased within the WSP. It was found that spatial heterogeneity in temperature, pH, and dissolved oxygen exists within the pond, possibly due to the presence of epipelic filamentous algae (Oedogonium) and submerged …
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Population Dynamics of Largemouth Bass and Panfish in South Dakota Ponds
… disk transparency, surface area, maximum depth, total alkalinity, turbidity) were measured to determine the relationship between largemouth bass density and environmental variables in the ponds sampled in 1988 and 1989. Largemouth bass CPUE was positively correlated with aquatic vegetation …
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Air-Sea CO2 Exchange and Carbon Dynamics in Foxe Basin: Findings from a 2023 Oceanographic Survey
… enriched in dissolved inorganic carbon (DIC) and total alkalinity (TA) was observed in Foxe Channel. A carbon budget attributed the 160 µmol kg⁻¹ enrichment in DIC between the surface and deep water to brine rejection (72%), respiration (24%), and gas exchange (4%). TA:DIC ratios showed no …
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Identification of Wastewater Primary Sludge Composition using Augmented Batch Tests and Mathematical Models
… phase volatile fatty acids (VFAs), H2CO3 and total alkalinity, ammonia and orthophosphate concentrations and the reactor pH. 2. The Augmented Biochemical Sulphide Potential (AugBSP) Test: A test aimed to improve the accuracy of the AugBMP test, as methanogenesis was replaced by Biological …
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Characterization of the Carbonate System across the Agulhas and Agulhas Return Currents
… 2013, where surface dissolved inorganic carbon, total alkalinity and CO₂ flux were compared between the Agulhas and Agulhas Return Currents and the region directly south over the Agulhas Plateau. Our findings highlighted that the solubility and biological pumps played minimal to no role in the …
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Capturing dynamics of marine inorganic carbon fluxes from diurnal to decadal timescales
… as marsh lateral fluxes. In this thesis, lateral total alkalinity (TA) and dissolved inorganic carbon (DIC) export fluxes were realistically quantified using high frequency time-series, in situ data. High-resolution fluxes permitted a closer look at how marsh generated TA and DIC are being …
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Capturing dynamics of inorganic carbon fluxes from diurnal to decadal timescales
… as marsh lateral fluxes. In this thesis, lateral total alkalinity (TA) and dissolved inorganic carbon (DIC) export fluxes were realistically quantified using high frequency time-series, in situ data. High-resolution fluxes permitted a closer look at how marsh generated TA and DIC are being …
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