Journal of Environmental Science and Health, Part A: Toxic/Hazardous Substances & Environmental Engineering
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Ranking initial environmental and human health risk resulting from environmentally relevant nanomaterials.
As nanomaterials find increased application in commercial and industrial products and processes so too the potential for release of these novel materials into the environment increases. The characteristics of these materials also may result in novel toxicological actions related to their nanoscale,...
Analysis of the toxicity-weighted release amount ranking of PRTR chemicals in Japan.
In this study, toxicity data were first collected for 184 chemicals from reliable information sources. After a validity check and analysis of these data, reference concentrations (RfC) were determined. The toxicity-weighted release amount (TWR) was then calculated for each chemical by dividing the r...
Lead distribution and its potential risk to the environment: lesson learned from environmental monitoring of abandon mine.
There are many abandon and existing mines (tin, lead and zinc) in the mountainous areas of Thailand. Toxic elements including heavy metals such as lead (Pb), cadmium (Cd) and arsenic (As) have been released and transported from the mining sites to the adjacent landscape. In Thong Pha Phum District,...
Chemical degradation of PCB in the contaminated soils slurry: direct Fenton oxidation and desorption combined with the photo-Fenton process.
This paper reports the results of the direct treatment of PCBs sorbed to solid particles (glass beads and sand) employing the Fenton process. The results obtained with contaminated sandy soils show 98% removal of the original PCB structure and 82% dechlorination, all within a reactio...
Journal of Environmental Science and Health, Part A. Toxic/hazardous substances and environmental engineering. Foreword.
Application of the self-organizing mapping in exploration of the environmental impact of a tsunami disaster.
A self-organizing map (SOM) algorithm was applied to evaluate the geochemical and environmental impact of 26th December 2004 tsunami, based on interelemental and intersite relations of sediment chemistry. The study was carried out based on data sets, including contents of salts (K, Na, Ca, Mg, Cl an...
Degradation of carbofuran-contaminated water by the Fenton process.
In this study, the Fenton process was applied for the degradation of carbofuran from aqueous system. Batch experiments were conducted at two different carbofuran concentrations i.e., 10 and 50 mg/L, and at pH 3. Batch experiments at each carbofuran concentration were designed by central composite de...
Photodegradation of phenanthrene by N-doped TiO2 photocatalyst.
The photodegradation of phenanthrene has been catalyzed by nanostructures of TiO2 doped with nitrogen, N-doped TiO2. The N-doped TiO2 was prepared from the sol-gel reaction of Titanium(IV) bis(ethyl acetoacetato)diisopropoxide with 25% ammonia solution. The N-doped TiO2 was calcined at various tempe...
Utilization of electromigration in civil and environmental engineering--processes, transport rates and matrix changes.
Electromigration (movement of ions in an applied electric field) is utilized for supply or extraction of ions from various porous materials within both civil and environmental engineering. In civil engineering, most research has been conducted on the removal of chlorides from concret...
Influence of nitrate feeding on carbon dioxide fixation by microalgae.
In this study, the effects of nitrate feeding on microalgal growth and associated CO2 fixation were evaluated, as a strategy to enhance carbon fixation by increasing the duration of the exponential phase of cell growth in the batch operation of a photobioreactor. Two species of green algae, Chlorell...