Showing papers in "Journal of Hazardous Materials in 2011"

TL;DR: The results suggest that nZVI could be employed as an efficient adsorbent for the removal of cadmium from contaminated water sources.

TL;DR: Based on this study, MOFs, even if they do not adsorb gases, can be suggested as potential adsorbents to remove harmful materials in the liquid phase from contaminated water via adsorption.

TL;DR: Alumina-coated multi-wall carbon nanotubes were synthesized and characterized and displayed the main advantage of separation convenience when a fixed-bed column was used compared to the batch adsorption treatment.

TL;DR: This review examines the mechanisms for the enhanced bioremediation of metal(loid)s by organic amendments and discusses the practical implications in relation to sequestration and bioavailability of metal-loids in soils.

TL;DR: PCA/FA and cluster analysis suggest that As, Cd, Co,Cr, Cr, Cu, Mn, Ni and Zn are derived from the anthropogenic sources, particularly metallic discharges of the copper mine plant.

TL;DR: The adsorption of chromium (VI) ions from aqueous solution by ethylenediamine-modified cross-linked magnetic chitosan resin (EMCMCR) was studied and the intraparticle diffusion study revealed that film diffusion might be involved in the present case.

TL;DR: This study shows that the as-prepared GNS/Fe(3)O(4) composite could be utilized as an efficient, magnetically separable adsorbent for the environmental cleanup.

TL;DR: It was found out that kinetics of adsorption varies with initial concentration of heavy metal ions, so CNT sheets have good potential application in environmental protection.

TL;DR: A mesoporous carbon developed from waste tire rubber was used as an adsorbent for the removal and recovery of a hazardous azo dye, Acid Blue 113 and Kinetic studies indicated that the adsorption process follow first order kinetics and particle diffusion mechanisms are operative.

TL;DR: The efficient removal of cationic dye, methylene blue (MB), from aqueous solution with the one-pot solvothermal synthesized magnetite-loaded multi-walled carbon nanotubes (M-MWCNTs) was demonstrated, and it was shown that the MB adsorption was pH-dependent.

TL;DR: The data showed that uncontrolled e-waste processing operations caused serious pollution to local soils and vegetables, and the cleaning up of former incineration sites should be a priority in any future remediation program.

TL;DR: The results reveal that high environmental risk of Cd, Ni, Co and Pb, are due to their higher availability in the exchangeable fraction, and the enrichment of heavy metals in bioavailable fraction is mostly contributed from anthropogenic sources.

TL;DR: The principles of generating NTPs are outlined and literature on the abatement of VOCs is reviewed in close detail, with special attention to the influence of critical process parameters on the removal process.

TL;DR: A review of publications on nanomaterials in the biennium 2008-2010 includes the most recent publications in risk assessment/toxicity, characterization and stability, toxicity, fate and transport of NMs in terrestrial ecosystems, and new ENMs.

TL;DR: Thermodynamic study revealed that the adsorption process is endothermic and spontaneous in nature and the regenerated adsorbent can be reused successfully for two successive adsorptive-desorption cycles without appreciable loss of its original capacity.

TL;DR: Positive matrix factorization was first employed to fingerprint the principal components responsible for the stabilization of heavy metals and the release of selected elements and the pH change in biochar amended soils, suggesting the importance of binding by surface ligands of biochar that is likely to be promoted by biochar-induced pH increase.

TL;DR: The results suggest that biochar converted from anaerobically digested sugar beet tailings is a promising alternative adsorbent, which can be used to reclaim phosphate from water or reduce phosphate leaching from fertilized soils.

TL;DR: The experimental results showed that lower pH value and CMP concentration brought faster degradation rate, and the possible mechanistic steps of CMP degradation were proposed.

TL;DR: This review presents the most common types of sulfonamides used in healthcare and veterinary medicine and discusses the problems connected with their presence in the biosphere.

TL;DR: FTIR demonstrated that carboxyl and hydroxyl groups were involved in the biosorption of the metal ions in the grafted copolymerization-modified orange peel.

TL;DR: This is one of the very few studies dealing with chlorinated organic intermediates formed via chlorine radical/active chlorine species (HOCl/Cl(2)) attack on dye compounds, and this finding may have significant technical implications for utilizing Co/PMS regent to detoxify chloride-rich azo dyes wastewater.

TL;DR: The main objective of this study was to list and compare the advantages and disadvantages of different methodologies to modify the surface of activated carbons for their application as adsorbents to remove organic and inorganic pollutants from aqueous phase.

TL;DR: FTIR and XPS reveal that Cu(2+) adsorption onto CMCD-MNPs mainly involves the oxygen atoms in CM-β-CD to form surface-complexes and thermodynamic parameters reveal the feasibility, spontaneity and exothermic nature of the Adsorption process.

TL;DR: The present review is concerned about the literatures published in this regard and discussions are made on the reaction mechanisms and kinetics proposed for heterogeneous CWAO and also on the typical catalyst deactivations in heterogeneousCWAO, i.e. carbonaceous deposits and metal leaching.

TL;DR: The results showed that heavy metal contaminations at S2 and S3 was more severe than at other sampling sites, especially for Zn, Cu, Ni and Pb, and the element concentrations from top to bottom layers decreased predominantly.

TL;DR: Results indicated that the electrostatic attraction of Cr(VI) to positively charged biochar surface, reduction of Cr-VI to Cr(III) ion, and complexation between Cr( III) ion and SBT's function groups were probably responsible for Cr( VI) removal by SBT biochar.

TL;DR: Green waste compost and biochar amendments were assessed for their assistance in regulating the mobility of copper (Cu) and lead (Pb) and the resultant uptake of these metals into vegetation and harvestable amounts of Pb were reduced.

TL;DR: It is remarkable that oak chars can remove similar amounts of Cr(VI) as activated carbon (S(BET): ∼ 1000 m(2)g(-1)).

TL;DR: Thiol-functionalization of MOFs is described by choosing a well known three-dimensional Cu-based MOF, i.e. [Cu(3)(BTC)(2)(H(2)O)(3)](n) (HKUST-1), by a facile coordination-based postsynthetic strategy, and their application for removal of heavy metal ion from water is demonstrated.

TL;DR: There existed a remarkable synergistic effect in the GAC/PS combined system and SO(4)(-•) or HO•, generated on or near the surface of GAC, played a major role in the AO7 degradation.