Showing papers in "Journal of Hazardous Materials in 2012"

TL;DR: The present review mainly focuses on NMOs' preparation, their physicochemical properties, adsorption characteristics and mechanism, as well as their application in heavy metal removal.

TL;DR: This review describes the environmental implications of Cr(VI) presence in aqueous solutions, the chemical species that could be present and then the technologies available to efficiently reduce hexavalent chromium.

TL;DR: The fundamental importance of being able to accurately predict the long-term physical, chemical and biological fate of contaminated sites following nZ VI treatment is emphasised and, as part of this, a universal empirical testing framework for nZVI is suggested.

TL;DR: This review illustrates the efforts in the search of alternative photocatalysts that are not based on TiO(2), with some exceptions concerning particularly innovative modifications as nanoassembled TiO-based composites with active carbon, graphite and fullerene.

TL;DR: The data demonstrated that the presence of ARGs was relatively independent of their respective antibiotic inducer, and toxic heavy metals, such as Hg, Cu, and Zn, exerted a strong selection pressure and acted as complementary factors for ARG abundance.

TL;DR: Novel Fe(3)O(4) magnetic nanoparticles modified with 3-aminopropyltriethoxysilane (APS) and copolymers of acrylic acid (AA) and crotonic acid (CA) could efficiently remove the metal ions with high maximum adsorption capacity at pH 5.5 and could be used as a reusable adsorbent with convenient conditions.

TL;DR: A novel magnetic composite bioadsorbent composed of magnetic chitosan and graphene oxide (MCGO) was prepared as the magnetic adsorbent, indicating that the adsorption was spontaneous, favorable and exothermic process in nature.

TL;DR: This paper describes the commonly employed and emerging techniques for mercury remediation, namely: stabilization/solidification (S/S), immobilization, vitrification, thermal desorption, nanotechnology, soil washing, electro-remediation, phytostabilization, phytoextraction and phytovolatilization.

TL;DR: This review attempts to revise all relevant knowledge about solar disinfection from microbiological issues, laboratory research, solar testing, up to and including real application studies, limitations, factors influencing adoption of the technique and health impact.

TL;DR: In light of the decreasing zeta potential and increasing CEC, the incorporation of biochar made the negative soil surface charge more negative and the soil pH increased markedly after the addition ofBiochar, which was advantageous for heavy metal immobilization in the bulk soil.

TL;DR: Superparamagnetic ascorbic acid-coated Fe(3)O(4) nanoparticles with a high specific surface area were successfully synthesized via an environmentally friendly hydrothermal route in the absence of any templates.

TL;DR: Investigation of street dust samples from four major streets in eastern and southern Tehran revealed that traffic and related activities, petrogenic and pyrogenic sources are likely to be the main anthropogenic sources of heavy metals and PAHs in Tehran dust.

TL;DR: The novel microsphere-like BiOI hierarchical material synthesized by a one-step solution method at room temperature exhibits an excellent photocatalytic degradation and mineralization capability to TC under visible light irradiation, which comes from its electronic band structure, high surface area and high surface-to-volume ratio.

TL;DR: This electrochemical sensor was further applied to determine 4-NP in real water samples, and it showed great promise for simple, sensitive, and quantitative detection of 4- NP.

TL;DR: The competitive adsorption of Pb(II), Cu (II) and Zn(II) onto a novel xanthate-modified magnetic chitosan (XMCS) was systematically investigated in single and ternary metal systems.

TL;DR: It can be suggested that MOFs having high porosity and large pore size can be potential adsorbents to remove harmful PPCPs in contaminated water.

TL;DR: Investigation of the effect of chloride ion on the degradation of 2,4,4'-CB (PCB28) and biphenyl (BP) by persulfate, based on the produced SO(4)(·-) showed that chloride ion could influence the selectivity of radical species and their distribution, and increase the concentration of the sum ofradical species.

TL;DR: The occurrence of sixteen pharmaceutically active compounds in influent and effluent wastewater and in primary, secondary and digested sludge in one-year period has been evaluated and the highest ecotoxicological risk is due to ibuprofen.

TL;DR: There has been a controversy over the TiO(2) PCO mechanisms of arsenite for the past 10 years but the adsorption mechanisms of inorganic and organic arsenic onto TiO (2)-based materials are relatively well established.

TL;DR: The result indicated that the as-prepared BiOI/BiOCl composites samples were solid solution and were self-assembled hierarchically with single-crystal nanoplates, providing a cost-effective approach for the synthesis of porous hierarchical materials and enhancement of photocatalyst performance for environmental and energetic applications owing to its low cost and easy scaling up.

TL;DR: The activation energy calculated from Arrhenius equation and the result of SEM and FTIR indicated that the adsorption of malachite green on the CG3 was physical process, providing an attractive adsorbent for removing of the hazardous materials from wastewater.

TL;DR: Pb speciation knowledge is needed to discuss phyto-toxicity data and improved soil phytoremediation techniques, and three kinds of organic ligands selected for this review include: ethylene diamine tetra-acetic acid, low molecular weight organic acids, and humic substances.

TL;DR: The quenching effects of different scavengers proved that reactive OH and h(+) played the major role for the MO degradation and photocatalytic activity enhancement of AgBr/Ag(3)PO(4) is closely related to the efficient separation of electron-hole pairs derived from the matching band potentials between AgBr and Ag(3).

TL;DR: This review article summarises major categories of organic microcontaminants that have been detected in wastewaters and studies their fate during the wastewater treatment process.

TL;DR: It is concluded that significant plant-available Si in soil contributes to decreased Cd concentrations in wheat shoots and could be implemented in a general scheme aiming at controlling Cd concentration in wheat.

TL;DR: The results from this study have implications that MICP based bioremediation by S. ginsengisoli is a viable, environmental friendly technology for remediation of the arsenic contaminated sites.

TL;DR: Three-dimensional BiOI/BiOCl composite microspheres with enhanced visible-light photodegradation activity of bisphenol-A (BPA) synthesized by a simple, one-pot, template-free, solvothermal method exhibited a high mineralization ratio, high stability and easy separation for recycling use, suggesting that it is a promising photocatalyst for the removal of BPA pollutants.

TL;DR: The results suggest that IJS (Z. maruritiana) is a potential low-cost adsorbent for the CR dye removal from synthetic dye wastewater.

TL;DR: Using 3-4% of WCO the aged bitumen group 40/50 was rejuvenated to a condition that closely resembled the physical, rheological properties of the original bitumen, however, there was a difference in the tendency to ageing between the WCO rejuvenated bitumen and the virgin bitumen during mixing, transport and laying on the road.

TL;DR: Results indicate that alleviated Cd toxicity by Se application is related to reduced Cd uptake and ROS accumulation, balanced nutrients, and increased H(+)- and Ca(2+)-ATPase activities in rice.