iron and manganese oxide Articles
-
A Case Study: Overcoming Iron Bacteria Problems in South Africa
One of two articles published in the December issue of Borehole Water Journal, the magazine of the South African Borehole Water Association. Craig Jones from Midlands Pumps in South Africa is the BoreSaver partner of Geoquip Water Solutions Ltd. Craig outlines case studies that demonstrate the effectiveness of BoreSaver in treating iron oxide, manganese oxide, iron related bacterial and ...
-
Fabrication of catalytic ceramic membranes for water filtration
The paper describes the use of the layer-by-layer technique to coat ceramic membranes with iron and manganese oxide nanoparticles. The coatings are thin (Escherichia coli bacteria.Keywords: ceramic membranes, fouling, membrane filtration, ozone, ...
-
Overcoming Iron Bacteria Problems in South Africa
One of two articles published in the December issue of Borehole Water Journal, the magazine of the South African Borehole Water Association. Craig Jones from Midlands Pumps in South Africa is the BoreSaver partner of Geoquip Water Solutions Ltd. Craig reviews the problems of iron bacteria and iron oxide contamination in South Africa and advocates an ongoing maintenance programme that ...
-
Battling Iron Bacteria Contamination in Mining
Published in the May issue of International Mining, this article focuses on the problem of iron bacteria contamination in the water supply for the Tiwest Mine at Cooljarloo, Australia. Mines rely heavily on groundwater sources and the quality and flow of that water have both operational and regulatory implications. The problem of mineral and bacterial contamination in groundwater sources ...
-
Practical evaluation of inorganic contaminant presence in a drinking water distribution system after hydraulic disturbance
The accumulation of loose deposits in a drinking water distribution system (DWDS) is a potential risk for water quality. In this work, hydraulic disturbance was simulated in different areas of a large DWDS. The water quality features before and after the disturbance were compared, and the solid deposits captured from different experimental sites were characterized. The results showed that the ...
-
Retention and distribution of Cu, Pb, Cr, and Zn in a full-scale hybrid constructed wetland receiving municipal sewage
This study was conducted to investigate the retention and distribution of Cu, Pb, Cr, and Zn in a hybrid constructed wetland (CW) that consists of both vertical baffled flow wetlands (VBFWs) and horizontal subsurface flow wetlands (HSSFs) with unique flow regimes and oxygen distribution. The heavy metal concentrations in water, sediments, and plant tissues in the hybrid CW were analysed. The ...
-
Using Fe–Mn binary oxide three-dimensional nanostructure to remove arsenic from aqueous systems
Fe–Mn binary oxide flower-like three-dimensional nanostructure synthesized from a hydrothermal procedure was used to remove arsenic (As) from aqueous solution. The samples were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier-transform infrared spectrometry (FTIR). SEM images revealed that the Fe–Mn binary oxide was dispersed as flower-like spheres ...
-
Interactions between ammonia, iron and manganese removal using pilot-scale biofilters
Pilot-scale biofilters treated with real groundwater were established to systemically investigate the interactions between ammonia, iron and manganese removal. When both of ammonia and manganese in influent were about 1 mg/L, they were quickly removed; but when manganese was above 3 mg/L, ammonia removal was affected significantly. When total iron was above 5 mg/L, the oxidization rate of ...
-
The on-site feasibility study of iron and manganese removal from groundwater by hollow-fiber microfiltration
The aim of this research was to investigate the removal of iron and manganese from groundwater by aeration, chlorine oxidation and microfiltration (MF). Pilot-scale experiments were performed at the Chang-Hua Water Treatment Plant in Taiwan. The raw waters contained soluble iron (0.4 mg/L) and manganese (0.5 mg/L) which were oxidized by chlorine and then filtered by hollow-fiber PTFE-MF. The ...
-
Project profile - City of Moulton, Texas arsenic, iron, manganese treatment system
Background AdEdge Technologies Inc. (AdEdge) was selected by the City of Moulton and Hejl, Lee, and Associates (HLA) to design a full-scale arsenic treatment project using its AD26 and Granular Ferric Oxide (GFO) adsorption technology. In addition to designing the system, AdEdge assisted HLA in obtaining a construction permit from the Texas Commission on Environmental Quality (TCEQ) for the ...
-
Project profile - Blue Rhino Hamptonville, NC
Background In 2007, Blue Rhino, located in Hamptonville, NC, contacted AdEdge Technologies, Inc. (AdEdge) to install an iron and manganese treatment system. The amount of iron (5.6 mg/L Fe) and manganese (0.6 mg/L Mn) were well above the maximum contaminant levels of 0.3 mg/L Fe an 0.05 mg/L Mn respectively. The pH of the Blue Rhino site (6.10) was quite below the maximum contaminant level. Blue ...
-
The study on chemical adsorption of dissolved oxygen on naturally formed co-oxides filter film in aqueous solution: combined characterization of XPS and TPD
The chemical adsorption of dissolved oxygen (DO) by co-oxide filter film-coated sands, formed through the filtration of ground water containing high concentrations of ammonia, manganese and iron, were studied. The results showed that the filter film consisted of silicates, carbonates, manganese and iron oxides and was constructed in a three-layer porous structure. The specific area of ...
-
Project profile - USEPA arsenic demonstration project Springfield, Ohio – Chateau estates arsenic and iron treatment system
Background AdEdge Technologies Inc. (AdEdge) was selected in 2004 by the U.S. EPA and the host site as part of the Round 2 Arsenic Demonstration Program to implement full scale arsenic treatment for the Chateau Estates Mobil Home Community in Springfield, Ohio. The public water system has approximately 230 connections with an average daily flow of 45,000 gallons per day. AdEdge was contracted by ...
-
Heavy metal speciation and mobility assessment of arid soils in the vicinity of Al Ain landfill, United Arab Emirates
Sixty-four surface soil samples taken in the vicinity of Al Ain landfill were analysed for cadmium, chromium, copper, nickel, lead and zinc by inductively coupled plasma spectroscopy. Extraction techniques were used to establish the association of the total concentrations of the six metals in the soil samples with their contents in the exchangeable, carbonate, iron/manganese oxides, and residual ...
-
Trace metal dynamics in floodplain soils of the River Elbe: A review
This paper reviews trace metal dynamics in floodplain soils using the Elbe floodplains in Germany as an example of extraordinary importance because of the pollution level of its sediments and soils. Trace metal dynamics are determined by processes of retention and release, which are influenced by a number of soil properties including pH value, redox potential, organic matter, type and amount of ...
-
Overcoming iron bacteria problems: An Australian perspective
Iron bacteria are becoming an increasing problem in groundwater bores and are estimated to affect about 40% of the world’s water bores with anecdotal evidence indicating that this number is steadily increasing. Iron bacteria derive energy during their metabolism through oxidising soluble ferrous iron, present in the groundwater, to its insoluble ferric form. The resultant biofilm is ...
-
World War II Memorial, DC - Case Study
In 2003, AdEdge Water Technologies began working closely with EarthTech, the assigned engineering firm responsible for specifying and selecting the various water treatment systems serving the new National World War II Monument in Washington, DC. Stormwater and groundwater control and treatment are essential aspects of this project given the location of the site on the Mall adjacent to the ...
-
World War II Memorial, DC Iron & Manganese Reduction - Case Study
In 2003, AdEdge Water Technologies began working closely with EarthTech , the assigned engineering firm responsible for specifying and selecting the various water treatment systems serving the new National World War II Monument in Washington, DC. Stormwater and groundwater control and treatment are essential aspects of this project given the location of the site on the Mall adjacent to the ...
-
Electric arc furnace flue dust: characterisation and toxicity with Photobacterium phosphoreum
During steelmaking in electric arc furnaces (EAFs), 10 to 15 kg of dust, consisting of a mixture of zinc, lead and iron oxides and to a lesser degree chrome, nickel and manganese, is generated per ton of steel product. In many countries, the disposal of EAF dust in landfill sites is regarded as an environmental hazard, since toxic metals may be leached into drinking water supplies. This work ...
-
Project profile - Foxxtown Apartments Sudlersville, Maryland arsenic, iron & manganese removal
Background AdEdge Technologies Inc. (AdEdge) was selected in 2006 by McCrone Engineers and the awarded contractor, Maryland Construction to design, build, and install a full scale AD26GS+ arsenic, iron, and manganese treatment system for their customer Foxxtown Apartments in Sudlersville, Maryland to meet the new EPA arsenic standard. The treatment system was based on the design rated for 50 ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you