Iron and Manganese in Groundwater: Using Kriging and GIS to Locate High Concentrations in Buncombe County, North Carolina

Ground Water ◽  
2017 ◽  
Vol 56 (1) ◽  
pp. 87-95 ◽  
Author(s):  
Crystal D. Johnson ◽  
Arpita Nandi ◽  
T. Andrew Joyner ◽  
Ingrid Luffman
Keyword(s):  
North Carolina ◽  
High Concentrations ◽  
Buncombe County ◽  
Iron And Manganese

Mineral resources of the Craggy Mountain Wilderness Study Area, Buncombe County, North Carolina

1978 ◽  
Author(s):  
Frank Gardner Lesure ◽  
A.E. Grosz ◽  
B.B. Williams ◽  
Gertrude C. Gazdik
Keyword(s):  
North Carolina ◽  
Mineral Resources ◽  
Buncombe County

Vascular Flora of the Christmount Preserve, Buncombe County, North Carolina

Castanea ◽  
2022 ◽  
Vol 86 (2) ◽  
Author(s):  
Amy E. Boyd ◽  
Lane Doyle ◽  
Susan E. Lusardi ◽  
Gray Allen Goliszek
Keyword(s):  
North Carolina ◽  
Vascular Flora ◽  
Buncombe County

Jim Wayne Miller

2020 ◽  
pp. 326-337
Keyword(s):  
North Carolina ◽  
German Literature ◽  
Professional Life ◽  
Berea College ◽  
Western North Carolina ◽  
Jim Wayne Miller ◽  
Western Kentucky ◽  
Western Kentucky University ◽  
Buncombe County ◽  
Vanderbilt University

Reared in western North Carolina on a farm in Buncombe County near his maternal and paternal grandparents, Jim Wayne Miller completed his undergraduate work at Berea College in 1958 and earned his doctorate in German literature at Vanderbilt University in 1965. Throughout his professional life, he taught German at Western Kentucky University....

scholarly journals The ars Detoxification System Is Advantageous but Not Required for As(V) Respiration by the Genetically Tractable Shewanella Species Strain ANA-3

2003 ◽  
Vol 69 (5) ◽  
pp. 2800-2809 ◽  
Author(s):  
Chad W. Saltikov ◽  
Ana Cifuentes ◽  
Kasthuri Venkateswaran ◽  
Dianne K. Newman
Keyword(s):  
Generation Time ◽  
Efflux Pump ◽  
Shewanella Oneidensis ◽  
Growth Yield ◽  
Gene Encoding ◽  
Metabolic Capability ◽  
Shewanella Species ◽  
Functional Analog ◽  
High Concentrations ◽  
Iron And Manganese

ABSTRACT Arsenate [As(V); HAsO4 2−] respiration by bacteria is poorly understood at the molecular level largely due to a paucity of genetically tractable organisms with this metabolic capability. We report here the isolation of a new As(V)-respiring strain (ANA-3) that is phylogenetically related to members of the genus Shewanella and that also provides a useful model system with which to explore the molecular basis of As(V) respiration. This gram-negative strain stoichiometrically couples the oxidation of lactate to acetate with the reduction of As(V) to arsenite [As(III); HAsO2]. The generation time and lactate molar growth yield (Ylactate) are 2.8 h and 10.0 g of cells mol of lactate−1, respectively, when it is grown anaerobically on lactate and As(V). ANA-3 uses a wide variety of terminal electron acceptors, including oxygen, soluble ferric iron, oxides of iron and manganese, nitrate, fumarate, the humic acid functional analog 2,6-anthraquinone disulfonate, and thiosulfate. ANA-3 also reduces As(V) to As(III) in the presence of oxygen and resists high concentrations of As(III) (up to 10 mM) when grown under either aerobic or anaerobic conditions. ANA-3 possesses an ars operon (arsDABC) that allows it to resist high levels of As(III); this operon also confers resistance to the As-sensitive strains Shewanella oneidensis MR-1 and Escherichia coli AW3110. When the gene encoding the As(III) efflux pump, arsB, is inactivated in ANA-3 by a polar mutation that also eliminates the expression of arsC, which encodes an As(V) reductase, the resulting As(III)-sensitive strain still respires As(V); however, the generation time and the Ylactate value are two- and threefold lower, respectively, than those of the wild type. These results suggest that ArsB and ArsC may be useful for As(V)-respiring bacteria in environments where As concentrations are high, but that neither is required for respiration.

scholarly journals ENVIRONMENTAL – HYDROGEOLOGICAL INVESTIGATIONS ON THE CLAY DEPOSITS IN THE BROAD AREA OF MESOLOGGI – AITOLIKO LAGOONS

2017 ◽  
Vol 43 (4) ◽  
pp. 1878 ◽  
Author(s):  
E. Zagana ◽  
I. Lemesios ◽  
S. Charalambopoulos ◽  
K. Katsanou ◽  
G. Stamatis ◽  
...  
Keyword(s):  
Surface Waters ◽  
High Electrical Conductivity ◽  
Carbonate Aquifer ◽  
Broad Area ◽  
Clay Deposits ◽  
Hydrogeological Study ◽  
High Concentrations ◽  
Surface And Groundwater ◽  
Iron And Manganese

A hydrogeological study took place in the broader area of Mesologgi – Aitoliko lagoons (West Greece) aiming at the investigation of a) the hydrogeological conditions of the area as well as the surface and groundwater influences on the quality of the clay deposits found in the lagoons and b) the properties of the clay in order to be identified as “therapeutic peloids”. Due to their location, the clay deposits could be influenced and possibly polluted from the surface waters. The aquifer of the unconsolidated formations presents low hydraulic conductivity, while the carbonate aquifer is bounded from the foregoing aquifer and therefore the possibility of clay pollution from the groundwater is very limited. pH of the sediments showing neutral and alkaline values, limits the mobility of some pollutants. Seawater affects some of the clay samples, which present high electrical conductivity. Iron and manganese show also high concentrations, while some of trace elements such as Cd, Hg, Hf, Be, Ag present concentrations under the detection limit. Most of the organic material of the clay consists of humus and therefore they could be suitable for fangotherapy.

scholarly journals Tracking the temporal variation of COVID-19 surges through wastewater-based epidemiology during the peak of the pandemic: a six-month long study in Charlotte, North Carolina

2021 ◽  
Author(s):  
Visva Bharati Barua ◽  
Md Ariful Islam Juel ◽  
A. Denene Blackwood ◽  
Thomas Clerkin ◽  
Mark Ciesielski ◽  
...  
Keyword(s):  
North Carolina ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Strong Positive Correlation ◽  
Municipal Wastewater Treatment ◽  
Fecal Shedding ◽  
Global Pandemic ◽  
High Concentrations ◽  
Municipal Wastewater Treatment Plants ◽  
Influent Wastewater

The global spread of SARS-CoV-2 has continued to be a serious concern after WHO declared the virus the causative agent of the coronavirus disease 2019 (COVID-19) a global pandemic. Monitoring of wastewater is a useful tool for assessing community prevalence given that fecal shedding of SARS-CoV-2 occurs in high concentrations by infected individuals, regardless of whether they are asymptomatic or symptomatic. Using tools that are part of the wastewater-based epidemiology (WBE) approach, combined with molecular analyses, wastewater monitoring becomes a key piece of information used to assess trends and quantify the scale and dynamics of COVID-19 infection in a specific community, municipality, or area of service. This study investigates a six-month long SARS-CoV-2 RNA quantification in influent wastewater from four municipal wastewater treatment plants (WWTP) serving the Charlotte region of North Carolina (NC) using both RT-qPCR and RT-ddPCR platforms. Influent wastewater was analyzed for the nucleocapsid (N) genes N1 and N2. Both RT-qPCR and RT-ddPCR performed well for detection and quantification of SARS-CoV-2 using the N1 target, while for the N2 target RT-ddPCR was more sensitive. SARS-CoV-2 concentration ranged from 103 to105 copies/L for all four plants. Both RT-qPCR and RT-ddPCR showed a significant moderate to a strong positive correlation between SARS-CoV-2 concentrations and the 7-day rolling average of clinically reported COVID-19 cases using a lag that ranged from 7 to 12 days. A major finding of this study is that despite small differences, both RT-qPCR and RT-ddPCR performed well for tracking the SARS-CoV-2 virus across WWTP of a range of sizes and metropolitan service functions.

Fenton process for the combined removal of iron and organic micropollutants in groundwater treatment

2002 ◽  
Vol 2 (2) ◽  
pp. 229-236 ◽  
Author(s):  
G.F. Ijpelaar ◽  
M. Groenendijk ◽  
J.C. Kruithof ◽  
J.C. Schippers
Keyword(s):  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Laboratory Scale ◽  
Fenton Process ◽  
Organic Micropollutants ◽  
Groundwater Treatment ◽  
Manganese Removal ◽  
Nitrification Process ◽  
High Concentrations ◽  
Iron And Manganese

Fenton process, known as Advanced Oxidation Process for the degradation of organic pollutants in waste and drinking water, was studied for the combination of iron removal and pesticide control in anaerobic groundwater. The combined effect of aeration and rapid sand filtration, which are commonly applied in groundwater treatment, was studied in a pilot plant. Pesticide degradation was performed on laboratory scale. It was found that addition of 2 mg/L H2O2 prior to aeration improved the removal of iron without hindering the filtration processes of manganese removal and nitrification. Under these conditions, the laboratory-scale tests showed pesticide degradations of up to 80% (influent concentration 1.6-2.5 μg/L). Dosing 8.5 mg/L H2O2 all selected pesticides were converted more than 80%. However, this dose appeared to have an adverse effect on the removal of iron and manganese and the nitrification process. This is attributed to the presence of relatively high concentrations H2O2 in the water entering the rapid sand filter. By filtration AOC, formed during oxidation with the low H2O2 dose, was reduced from about 70 μg/L to about 15-20 μg Acetate-C/L. Bromate formation did not occur. Residual H2O2 varied from 0.1-0.2 mg/L (2 mg/L H2O2 dose) to 0.2-0.4 mg/L (8.5 mg/L H2O2 dose) which is higher than the proposed guideline of 0.019 mg/L.

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