Showing papers in "Chemosphere in 2005"

TL;DR: The most important aspects referring to irreversible adsorption of phenols and impact of different substituents of phenolic compounds on their uptake by activated carbons is considered.

TL;DR: The findings presented here indicate that the location and the age of the park are important factors in determining the extent of heavy metal, particularly Cu and Pb, pollution.

TL;DR: Nitrate toxicity to aquatic animals increases with increasing nitrate concentrations and exposure times, and may decrease with increasing body size, water salinity, and environmental adaptation; however, early developmental stages of some marine invertebrates may be so susceptible to nitrate as sensitive freshwater invertebrate.

TL;DR: Thermodynamics showed that the adsorption of CR on BFA was most favourable in comparison to activated carbons, and the R-P isotherm best-fits the CR adsorbent data on all adsorbents.

TL;DR: It is drawn that electrocoagulation has a future as a decentralised water treatment technology and a conceptual framework is presented for future research directed towards a more mechanistic understanding of the process.

TL;DR: A variety of analytical methods are reviewed and progress is being made to better understand this mixture of chemically similar compounds, which is a complex group of carboxylic acids.

TL;DR: It is concluded that hormones (especially 17 alpha-ethynylestradiol) and possibly also nonylphenol(ethoxylate)s are primarily responsible for these effects of feminizing effects in male fish.

TL;DR: The aim of the present study was to investigate quantitatively the potential binding sites present at the surface of Spirulina sp.

TL;DR: The results showed that EDDS was more effective than EDTA at increasing the concentration of Cu in corn and beans, and that EDTA was better at solubilizing Pb and Cd than EDDS.

TL;DR: It was concluded that pharmaceutical antibiotics can exert a temporary selective pressure on soil microorganisms even at environmentally relevant concentrations.

TL;DR: This paper aims to assess whether ethylene diamine disuccinate (EDDS), a biodegradable chelator, can be used for enhanced phytoextraction purposes and evaluated performance of EDTA and EDDS by application to Helianthus annuus.

TL;DR: The results indicate that persulfate oxidation mechanisms are effective in degrading many VOCs including chlorinated ethenes (CEs), BTEXs and trichloroethanes that are frequently detected in the subsurface at contaminated sites.

TL;DR: Findings indicated that the amino and carboxyl groups take part in the Cr(VI) removal from the aqueous phase.

TL;DR: It is suggested that Pb toxicity causes oxidative stress in plants and the antioxidative enzymes SOD, CAT, POD, GR, GST could play a pivotal role against oxidative injury.

TL;DR: This investigation of Fenton and Fenton-like reactions at low iron concentration to oxidize three commercial azo dyes reveals that both of these methods can remove the color of these dyes completely and only produce little sludge in wastewater that meet local effluent standards and do not need to further treat.

TL;DR: The results suggest that Si-enhanced tolerance to Cd can be attributed not only toCd immobilization caused by silicate-induced pH rise in the soils but also to Si-mediated detoxification of Cd in the plants.

TL;DR: Individual and mixtures of pharmaceuticals affect normal development and reproduction of Daphnia magna, aquatic toxicity of pharmaceutical mixtures can be unpredictable and complex compared to individual pharmaceutical effects, and timing and duration of pharmaceutical exposure influence aquatic toxicity.

TL;DR: It is shown that these dyes contributed to the mutagenic activity found in the Cristais River environmental samples analyzed and are indirectly affecting the quality of the related drinking water.

TL;DR: The heavy metal speciation and the influence of changing the physico-chemical properties of the medium in the course of composting on the concentrations, bioavailability or chemical forms of Cu, Zn, Pb and Ni in sewage sludge were determined.

TL;DR: The results in this study indicated that pretreated biomass of S. maxima was a promising candidate for removing lead from wastewater.

TL;DR: The synthesis of these two classes of fluorinated compounds includes a review of their industrial synthesis and the synthesis of relevant degradation products.

TL;DR: Under these conditions, the degradation rate is enhanced in alkaline medium and polymerization of intermediates is favored in concentrated solutions, while reversed-phase chromatography revealed a similar complex paracetamol decay in acid and alkaline media.

TL;DR: It is shown in this study that with selected lambda(ex), lambda(em) and (delta)(lambda) values, regular emission, excitation and synchronous spectra can, together, provide a good picture of the OM sources and aging for extracted HS.

TL;DR: The field filtration results demonstrated that the granular TiO2 adsorbent was very effective for the removal of arsenic in groundwater.

TL;DR: It is found that fly ash shows different adsorption capacity depending on type of dyes, and the Freundlich and Redlich-Peterson models provide the better correlations with the experimental data.

TL;DR: Estimates for the 1990s show a much more rapid decline than other global studies, reflecting the view that technological progress in reducing sulfur based pollution has been rapid and is beginning to diffuse worldwide.

TL;DR: Major differences in the mobility of the six pharmaceuticals were observed and correlated with the adsorption/desorption properties of the compounds, including Ofloxacin, which was particularly strongly adsorbed while clofibric acid was found to be weakly Adsorbed.

TL;DR: Analysis of PCB concentrations from the 1980s to 1990s shows an increasing trend, possibly due to the improper disposal of and leakage from PCB containers, chemical transfers, and the general rise of industrial pollution.

TL;DR: It is revealed that carboxylic and phosphoric groups may play a major role in binding to metals at pH 7, and underlines the importance of metal exposure in order for bacteria to secrete or modify EPS.

TL;DR: It is shown that nitrogen-doped TiO2 after calcination had the highest photocatalytic activity among all three catalysts tested, with 95% of AO7 decolorized in 1 h under UV illumination.