Showing papers in "Journal of Hazardous Materials in 2014"

TL;DR: A thorough review of alternative non-iron Fenton catalysts and their reactivity towards hydrogen peroxide activation is presented, describing in detail the complex mechanisms and emphasizes on practical limitations influencing their environmental applications.

TL;DR: The remediation of heavy metal(loid) contaminated soils through manipulating their bioavailability using a range of soil amendments will be presented.

TL;DR: An overview of the recent advances of ZVI and progress obtained during the groundwater remediation and wastewater treatment utilizing ZVI (including nanoscale zero-valent iron (nZVI)) for the removal of contaminants.

TL;DR: This review paper would be helpful for the preparation of effective adsorbents for PFC removal and understanding interfacial process of PFCs during their transport and fate in aquatic environments.

TL;DR: While rice plant tissues' Cd content was significantly reduced, depending on biochar application rate, reduction in plant Pb concentration was found only in root tissue, and analysis of the fresh and contaminatedBiochar particles indicated that Cd and Pb had probably been bonded with the mineral phases of Al, Fe and P on and around and inside the contaminated biochar particle.

TL;DR: It was found that the metals sorption was accomplished mainly via chelation or ion exchange, and the results of thermodynamic studies illustrate that the adsorption process was endothermic and spontaneous in nature.

TL;DR: It appeared that Fe(2+)Fe(3+) on the catalyst surface was responsible for the radical generation, and Fe3O4 MNPs activated PMS is a promising technology for water pollution caused by contaminants such as pharmaceuticals.

TL;DR: The as-prepared MnFe2O4 and MnFe 2O4-rGO hybrid exhibited stable performance to remove the organic pollutants in wastewater with easy recycling and good stability by successive degradation experiments.

TL;DR: Nitrate nitrogen, total nitrogen, and total polycyclic aromatic hydrocarbons concentrations in sediments showed a co-release behavior with heavy metals, which posed a potential impact on the benthos community.

TL;DR: The results obtained in this study can be applied to optimize the adsorption capacities of micropollutants using activated carbon in water treatment process.

TL;DR: The results showed that Bi2O3/g-C3N4 exhibited a much higher photocatalytic activity than pure g-C 3N4 under visible light illumination.

TL;DR: The reduced graphene oxide-supported nanoscale zero-valent iron (nZVI/rGO) composites were synthesized by chemical deposition method and were characterized by SEM, high resolution TEM, Raman and potentiometric acid-base titrations, showing that the nZVI nanoparticles can be uniformly dispersed on the surface of rGO.

TL;DR: Nanoscale zero valent iron (NZVI) has high adsorption capacity of As(III) and As(V), but it is limited in practical use due to its small particle size and aggregation effect, so reduce graphite oxide (RGO) has been used as a support because of its high surface area.

TL;DR: First evidence is provided for the entrapment of Ag-NPs by the cuticle and penetration in the leaf tissue through stomata, for the diffusion of Ag in leaf tissues, and oxidation of Ag -NPs and complexation of Ag(+) by thiol-containing molecules.

TL;DR: The obtained results revealed that adsorbent had higher selectivity toward Cs even in the presence of a high concentration of Na and K and this is probably due to the Cs-π interaction of the benzene ring.

TL;DR: Results show that the Fe(2+)/S2O8(2-) process is very effective for the elimination of CBZ and characterized by a two-stage kinetics (a rapid initial decay followed by a retardation stage).

TL;DR: Gaps in toxicity and other chemical properties suggest deficiencies in the current state of knowledge, highlighting the need for further assessment to understand potential issues associated with HF chemicals in the environment.

TL;DR: The objective of this article is to encourage and direct future research towards an improved understanding on the relationship between emissions, concentrations, exposure and health impact and on the effectiveness of potential remediation measures in the urban environment.

TL;DR: It was concluded that the encapsulation of paraquat in nanoparticles can provide a useful means of reducing adverse impacts on human health and the environment, and that the formulation therefore has potential for use in agriculture.

TL;DR: The enhanced photocatalytic activity of Ag@AgBr/g-C3N4 compared with g-C 3N4 and Ag@agBr is obtained and explained in terms of the efficient visible-light utilization efficiency as well as the construction of Z-scheme, which keeps photogenerated electrons and holes with high reduction and oxidation capability, evidenced by photoelectrochemical tests and free radical and hole scavenging experiments.

TL;DR: Important factors for biotechnological application of SRB such as the inocula, the pH of the process, the substrates and the reactor design are discussed and microbial communities of sulfidogenic reactors treating AMD which comprise fermentative-, acetogenic- and SRB as well as methanogenic archaea are reviewed.

TL;DR: Adsorption behaviors and surface structure of antimony (III/V) on iron oxides were investigated using batch adsorption techniques, surface complexation modeling (SCM), X-ray photon spectroscopy (XPS), and extendedX-ray absorption fine structure spectroscope (EXAFS).

TL;DR: The binding features of the MB loaded GO gradually change from MB molecule parallel stacking on graphite plane through hydrophobic π-π interaction to vertical standing via electrostatic interaction with increasing OD, resulting in a significant improvement of MB uptakes.

TL;DR: The state of the art and methods for the estimation of heavy metal concentrations by the use of visible and near-infrared reflectance spectroscopy are reviewed and the challenges facing the application of hyperspectral images in mapping soil contamination over large areas are discussed.

TL;DR: It has been revealed that holes were the main factor for the improved photoactivity under UV-light, while the OH radicals gained the predominance for degrading organic molecules under visible-light.

TL;DR: This review summarizes the biodegradation and phytoremediation technologies proposed so far to detoxify PCB-contaminated sites and elaborates on the environmental variables affecting contaminant degradation rates, summarizing the amendments recommended to enhance PCB degradation.

TL;DR: This review provides an up-to-date compilation of 57 environmental and human toxicology studies published during 2000-2014 dealing with the adverse effects of pharmaceutical mixtures.

TL;DR: Significantly higher concentrations of PPCPs were observed in effluent samples collected in March 2013 compared to other seasons, suggesting higher concentrations from the WWTP could be discharged into the surrounding seawater during this period.

TL;DR: It is suggested that UV/H2O2 and UV/S2O8(2-) advanced oxidation processes (AOPs) are capable of degrading β-lactam antibiotics decreasing consequently the antibiotic activity of treated waters.

TL;DR: PAS-GO had a priority tendency to adsorb Pb, Cu and Fe from a mixed solution of metal ions, especially from a practical industrial effluent, especially in removing Pb(II) ions from water.