Topic
Water environment
About: Water environment is a research topic. Over the lifetime, 13384 publications have been published within this topic receiving 125138 citations.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: The thermodynamic study concluded that Cr(VI) ions removal by MNP-FB was exothermic and appreciative at low temperatures and the adsorption kinetics was interpreted well by Pseudo-first order model.
75 citations
••
TL;DR: In this article, the contamination of soil and water environment by heavy metals in a former mining area and their effect on the soil characteristics were determined, including total contents of heavy metals (Cu, Pb, Zn, Hg), soil reaction (pH), organic carbon (C ox ), activity of urease (URE), acid phosphatase (ACP), and alkaline phosphatases (ALP).
Abstract: Contamination of soil and water environment by heavy metals in a former mining area and their effect on the soil characteristics were determined. Soil samples were collected in the village of Rudnany which is, according to environmental regionalization, classified as an environmentally loaded and unhealthy area. Soil samples were collected in 2011 at eight fields situated at different distance from the pollution source. Total contents of heavy metals (Cu, Pb, Zn, Hg), soil reaction (pH), organic carbon (C ox ), activity of urease (URE), acid phosphatase (ACP), and alkaline phosphatase (ALP) were determined in soil samples. Water samples were collected in Rudniansky creek, which flows through the village. The contents of heavy metals (Cu, Pb, Zn, Hg) were determined in water samples. High contents of heavy metals in soil and water result from long-term mining and smelting activities predominantly focused on copper and mercury production. Numerous heaps of waste material and tailing ponds are the main pollutant sources representing a great threat to the environment, as these pollutants can accumulate in plants and enter the food chain. Extremely high and above-limit values of copper and mercury were determined in the sampled soils. According to the index of geoaccumulation, copper has been shown as a serious contaminant in some soil sampling fields, which were determined as strongly contaminated. In terms of the geoaccumulation index, all sampling fields were evaluated as very strongly contaminated by mercury. We found significant positive correlation between zinc, lead, and copper contents in soils, which is a likely sign of the same source of pollution. A nonsignificant but positive relationship between soil reaction and heavy metals and a negative correlation between soil pH and organic carbon were observed. A high degree of soil pollution was reflected in soil biological properties. Activity of soil enzymes significantly decreased with increasing heavy metals content in soils. Rudniansky creek was polluted only by copper and mercury. The highest and above-limit values of these metals were determined at the point where the stream leaves the village (in a downstream direction).
75 citations
••
TL;DR: The findings of large shared ARGs, abundant Total Coliforms and large wastewater burden in the groundwater provide a clear evidence that anthropogenic activities had a significant impact on groundwater.
75 citations
••
TL;DR: In this paper, the corrosion behavior of N80 carbon steel under dynamic supercritical CO 2 -water environment was studied by weight loss, electrochemical measurements, and surface analysis, and it was demonstrated that there is no essential difference in the electrochemical corrosion mechanism under supercritical and non-supercritical CO2 environments.
74 citations
••
TL;DR: N nanoscale FeS-Fe3O4 nanocomposites were firstly synthesized with chitosan as the stabilizer (CTO-MFeS) and the Hg adsorption capacity and mechanism were studied, providing additional information that may be useful for a theoretical basis for Hg treatment in water environment.
74 citations