Showing papers in "Journal of Hazardous Materials in 2013"

TL;DR: This review summarizes the recent literatures on the adsorptive removal of various hazardous compounds mainly from fuel, water, and air by virgin or modified MOF materials.

TL;DR: The chemical/biological remediation processes for Cr(VI) and their efficiency have been summarised in some detail and the interaction of chromium with various microbial/bacterial strains isolated and their reduction capacity towards Cr( VI) are also discussed.

TL;DR: The origin, characteristics, and environmental impacts of oily sludge were introduced and no single specific process can be considered as a panacea since each method is associated with different advantages and limitations.

TL;DR: The results of SLERA revealed that the hot spots for PPCP pollution were those river waters affected by the megacities with high density of population, such as Beijing, Tianjin, Guangzhou and Shanghai.

TL;DR: The results showed that both feedstock properties and production conditions are important for determining the yield and properties of biochar, but their respective influence changes with the property or set of properties of interest.

TL;DR: The current review is dedicated to presenting state of the art knowledge on various bioadsorbents and physico-chemical conditions used to remediate Cu(2+) from waste streams and the data of Cu removal was found best fit both Freundlich and Langmuir models.

TL;DR: This work critically reviews existing knowledge and research on the uptake of nickel and zinc by natural and modified zeolite, bentonite and vermiculite, and focuses on the examination of different parameters affecting the process, system kinetics and equilibrium conditions.

TL;DR: Biochars were produced from pig manure to elucidate the influence of biochars with high ash contents on the fate of pesticides, and adsorption increased greatly on the deashed biochar, indicating that some organic sorption sites in the original biochar were blocked or difficult to access due to their interactions with inorganic moiety.

TL;DR: Differences in oxidative ability of the activated persulfate were related to different radicals generated during activation, and greater removal of high molecular weight PAHs was measured with Persulfate activation.

TL;DR: N- biochar had a highest adsorption capacity of all chemicals, suggesting that N-biochar derived from loblolly pine chip is a promising sorbent for agricultural and environmental applications.

TL;DR: The performances of Co(x)Fe(3-x)O(4) nanocatalysts on the activation of Oxone for removal of RhB were investigated and it was found that the higher cobalt content in the catalyst, the better removal performance was resulted.

TL;DR: Results showed that the QDs presented high MG decolorization efficiency, and doping with Fe(3+) promoted the dye removal, and the maximum removal of dyes was obtained at 80 mg/L of photocatalyst as an optimum value for the dosage of photoc atalyst in pH of 8.0.

TL;DR: Future research needs to explore highly efficient, low cost adsorbents that can be easily regenerated for reuse over several cycles of operations without significant loss of adsorptive capacity and which have good hydraulic conductivity to prevent filter clogging during the fixed-bed treatment process.

TL;DR: A magnetic nanoscaled catalyst cobalt ferrite (CoFe2O4) was successfully prepared and used for the activation of oxone to generate sulfate radicals for the degradation of diclofenac and exhibited the best catalytic performance.

TL;DR: The kinetic studies demonstrated a rapid removal of Cr(VI) ions from the aqueous solutions in the presence of these stabilized nZVI particles on MCM-41, and a considerably increased reduction capacity per unit mass of material in comparison to that of unsupported nZ VI.

TL;DR: Silver/iron oxide composite nanoparticles have been synthesized successfully via a facile one-pot green route by the use of l-arginine, which created an aqueous solution of about pH 10 and acted as a reducing agent for the successive formation of iron oxide and Ag nanoparticles.

TL;DR: The results show that GO-CdS composites exhibit higher efficiency in photodegradation of various water pollutants than pure CdS nanoparticles under visible light irradiation and the mechanisms behind these excellent performances can be attributed to.

TL;DR: Thermodynamic study revealed that the adsorption process is endothermic and spontaneous in nature, and desorption results showed that the advertisersorption capacity can remain up to 80% after 5 times usage.

TL;DR: The novel visible-light-driven graphitic carbon nitride composite photocatalysts exhibited higher activity for the photodegradation of CH₃CHO under visible light irradiation compared to g-C ₃N₄/WO₁ composites, which should usefully expand applications ofg-C₰N⁄ as a visible- light-driven photocatalyst.

TL;DR: Ulastructure analysis revealed NiO-NPs translocation, nuclear condensation, abundance in peroxisomes and degenerated mitochondrial cristae, which signifies its potential to induce cell death presumably by Ni ions, triggering the mitochondrial dependent intrinsic apoptotic pathway.

TL;DR: Results showed that toxic effects of GO on microbial communities were dose dependent, especially in concentrations between 50 and 300mg/L, and the interaction of GO with wastewater produced significant amount of reactive oxygen species (ROS), which could be one of the responsible mechanisms for the toxic effect of GO.

TL;DR: Results demonstrated that UV/H₂O₁ and UV/PS are potential alternatives to control water pollution caused by emerging contaminants such as AP.

TL;DR: Mesoporous Fe2O3/TiO2 could be an active catalyst for pollutant degradation, as TiO2 with framework Fe(3+) and photosensitization with free Fe2 O3 were involved in the activity.

TL;DR: The grafted polyacrylamide chains were found to contribute much to the improved bridging and sweeping flocculation effects, but reduced charge neutralization flocculations for the effect of charge screening.

TL;DR: Results indicate that inoculating the native plant A. firma with B. thuringiensis GDB-1 improves its efficiency for phytoremediation of soil containing mine tailings contaminated with heavy metals.

TL;DR: It was confirmed that the reductive defluorination of PFOA was achieved by hydrated electrons being generated from the photo-conversion of SO3(2-) as a mediator, and it was demonstrated that the generation of hydrated electron was promoted by increasing either SO3 (2-) concentration or solution pH, leading to the acceleration of the P FOA defluOrination.

TL;DR: This review considers among the most abundant the following materials - wood waste including demolition wood, phytoremediation scavengers and chromated copper arsenate (CCA) timber, sludges including de-inking sludge and sewage sludge, chicken litter and spent pot liner.

TL;DR: The most sensitive organism was D. magna and the least sensitive to extracts from the biochars proved to be S. capricornutum and T. thermophila.

TL;DR: An effective recovery of the rare earth metals, Y, Eu, La and Ce, from the metal impurities, Fe, Al and Zn, was achieved from the acidic leach solution of phosphor powders using an ionic liquid containing DODGAA as novel extractant system.

TL;DR: The low-flow produced a pesticide concentration effect, generating higher levels in water and accumulation in sediments, which forecasts a hazard in future scenarios if the current situation of the climate change and water scarcity evolves to more critical conditions highlighting the need of these monitoring studies.