toxic metals concentration Articles
-
Leaching of inorganic pollutants from fresh and partially degraded Municipal Solid Waste: a lysimeter study under tropical conditions
Leaching behaviour of inorganic ions from fresh and partially degraded Municipal Solid Waste (MSW) under controlled dumping conditions were studied. The major inorganic ions examined, except chloride, nitrate-N and nitrite-N, showed markedly higher values for leachate from fresh waste. Toxic metal concentrations were relatively low in leachate from partially degraded waste. The low leaching ...
-
Movement of toxic metals from small-scale industrial areas: a case study from Delhi, India
In India, an estimated 70% of the total industrial pollution load is attributed to Small and Medium Enterprises (SMEs). Among SMEs, small-scale industries continue to use obsolete technologies with no stringent rules for pollution control. Consequently, waste generated from them is generally dumped without treatment. These facts are strengthened from the analysis conducted on solid waste and ...
-
Physico-chemical treatment of liquid waste on an industrial plant for electrocoagulation
Wastewater from washing, oil separators, the metal processing and detergent industries, was tested and treated for treatment of different types of liquid waste at industrial level at Domžale-Kamnik Wastewater Treatment Plant (WWTP). The effect of implementing the electrocoagulation (EC) and flotation processes, respectively, is analysed and includes the duration of the EC implementation, ...
-
Pilot-scale demonstration of the hybrid zero-valent iron process for treating flue-gas-desulfurization wastewater: Part II
The hybrid zero-valent-iron (hZVI) process is a novel chemical treatment process that has shown promise for removing heavy metals and nutrients from industrial wastewaters. In this study, a pilot-scale demonstration was conducted to continuously treat 3.8–7.6 L/min (1–2 gpm) of the flue-gas-desulfurization (FGD) wastewater at a coal-fired power plant for 5 months. In this paper, a ...
-
Comparison of metal (Zn and Cu) complexation characteristics of DOM in urban runoff, domestic wastewater and secondary effluent
This study was aimed at comparing the Zn and Cu binding parameters with dissolved organic matter (DOM) in road runoff, wastewater treatment plant (WWTP) effluent and influent. Conditional stability constant (K´) and binding site concentration ([L]) are important to predict free or labile metal concentration and toxicity in the water environment. The values of K´ and [L] of three DOMs ...
-
Comparison of metal (Zn and Cu) complexation characteristics of DOM in urban runoff, domestic wastewater and secondary effluent
This study was aimed at comparing the Zn and Cu binding parameters with dissolved organic matter (DOM) in road runoff, wastewater treatment plant (WWTP) effluent and influent. Conditional stability constant (K′) and binding site concentration ([L]) are important to predict free or labile metal concentration and toxicity in the water environment. The values of K′ and [L] of three DOMs were ...
-
Resistance to heavy metals and bioaccumulation of lead and zinc by Chryseobacterium solincola strain 1YB-R12T isolated from soil
A novel species of the genus Chryseobacterium which was isolated from soil, has been studied for resistance to heavy metals (lead, chromium, nickel, zinc, cadmium, copper and cobalt), antibiotic and its capacities for bioaccumulation of lead and zinc. It exhibited high minimal inhibitory concentration (MIC) values for metal ions tested ranging from 75 mg/l to 500 mg/l and antibiotic ...
-
Heavy metals, PAHs and toxicity in stormwater wet detention ponds
Concentrations of 6 different heavy metals and total polycyclic aromatic hydrocarbons (PAHs) were determined in stormwater runoff and in the pond water of two Danish wet detention ponds. The pond water samples were analyzed for toxic effects, using the algae Selenastrum capricornutum as a test organism. Stormwater and pond water from a catchment with light industry showed high levels of heavy ...
-
Geochemical control processes and potential sediment toxicity in a mine‐impacted lake
Geochemical parameters and major ion concentrations from sediments of a freshwater lake in the town of Åtvidaberg, south‐eastern, Sweden, were used to identify the geochemical processes that control the water chemistry. The lake sediments are anoxic, characterized by reduced sulphur and sulphidic minerals. The hypothesis tested is that in sulphidic‐anaerobic contaminated sediments, the ...
-
Ultrapure Water for Determination of Toxic Elements in Environmental Analyses
Abstract In this paper the importance of reagent water quality for toxic element environmental analyses is discussed, and the suitability of fresh ultrapure water produced using Merck water purification systems for ICP-OES and ICP-MS trace element analyses in environmental laboratories is demonstrated. Key words or phrases Trace elements, metals, toxic elements, ICP-MS, ICP-OES, contamination, ...
-
Unexpected toxicity to aquatic organisms of some aqueous bisphenol A samples treated by advanced oxidation processes
In this study, photocatalytic and catalytic wet-air oxidation (CWAO) processes were used to examine removal efficiency of bisphenol A from aqueous samples over several titanate nanotube-based catalysts. Unexpected toxicity of bisphenol A (BPA) samples treated by means of the CWAO process to some tested species was determined. In addition, the CWAO effluent was recycled five- or 10-fold in order ...
-
Metabolomics confirms that dissolved organic carbon mitigates copper toxicity
Reductions in atmospheric emissions from the metal smelters in Sudbury, Canada, produced major improvements in acid and metal contamination of local lakes and indirectly increased dissolved organic carbon (DOC) concentrations; however, metal toxicity has remained a persistent problem for aquatic biota. Integrating high‐throughput, non‐targeted mass spectrometry metabolomics with conventional ...
-
Phytotoxicity of trace metals in spiked and field‐contaminated soils: Linking soil extractable metals with toxicity
Soil tests have been widely developed to predict trace metal uptake by plants. The prediction of metal toxicity however has rarely been tested. The study was set up to compare eight established soil tests for diagnosing phytotoxicity in contaminated soils. Nine soils contaminated with Zn or Cu by metal mining, smelting or processing were collected. Uncontaminated reference soils with similar ...
-
gaiasafe filter products for drinking water purification - Case Study
Problem In some water works chlorination of drinking water is used to eliminate mikrobes. Chlorinated water may have disagreable taste and smell. Some water works use aluminium salts to clean the water. This leads to low concentrations of aluminium in drinking water. Today it is known that aluminium may be toxic to men. Old piping installations inside or outside private homes often where made of ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you