Showing papers in "Water Research in 2016"

TL;DR: This paper presents a critical review of recent achievements in the modification of ZnO photocatalyst for organic contaminants degradation and recommends improvements in the heterogeneous photocatalysis under UV/visible/solar illumination.

TL;DR: The results suggest that tertiary effluent is not a significant source of microplastics and that these plastic pollutants are effectively removed during the skimming and settling treatment processes.

TL;DR: It is evident from the literature survey presented herein that modified cellulose-based adsorbents exhibit good potential for the removal of various aquatic pollutants, however, still there is a need to find out the practical utility of these adsorbent on a commercial scale, leading to the improvement of pollution control.

TL;DR: The most commonly used conventional and advanced treatment processes to remove micropollutants are described, as well as the lack of reports concerning some substances of the watch list, the study of un-spiked aquatic matrices and the assessment of transformation by-products.

TL;DR: A comprehensive review of recent studies on UV-LEDs with various wavelengths for the inactivation of different microorganisms shows many inconsistent and incomparable data were found from published studies, which underscores the importance of establishing a standard protocol for studying UV- LED in activation of microorganisms.

TL;DR: The influence of structural elements of the chitosan-based flocculants on their flocculation properties are emphasized in this review by examining different flocculations mechanisms and their applications in the treatment of various wastewaters containing different pollutants.

TL;DR: This work provides an update on the latest development of stabilized nZVI for various environmental cleanup uses, and overviews the evolution and environmental applications of stabilization, as well as revealing some critical knowledge gaps and research needs.

TL;DR: It has been concluded that the following research gaps need to be filled: lack of studies on the on-line application of fluorescence spectroscopy in wastewater treatment works and lack of data processing tools suitable for rapid correction and extraction of data contained in fluorescence excitation-emission matrices (EEMs) for real-time studies.

TL;DR: The potential of PN/A systems to compete with conventional treatments for biological nutrients removal both in terms of removal rates and overall effluent quality was proven.

TL;DR: It is highlighted that hybridising these membrane processes with existing nutrient precipitation process will lead to better management of and more diverse pathways for near complete nutrient recovery in wastewater treatment facilities.

TL;DR: It was demonstrated that all of the factors could exert significant effects on the ZVI performance toward contaminants removal, negatively or positively, and future research may attempt to establish some feasible strategies to minimize the deteriorating effects and utilize the positive effects so as to improve the performance of ZVI.

TL;DR: An overview of the desalination trends around the world is provided and the sustainability components of Desalination processes in comparison with other water supply alternatives are discussed to increase current understanding on the sensitive and futuristic issues of water supply and resource management options for drought facing regions.

TL;DR: The results suggest a potentially crucial role of HMRGs in the spread, mediated by mobile elements, of some ARGs, i.e. sulII and heavy metal resistance genes (HMRGs) and of a mobile element (the class I integron) in three WWTPs.

TL;DR: The kinetics and pathways of the degradation of a recalcitrant pharmaceutical and personal care product (PPCP)-ibuprofen (IBP)-by the UV/chlorine AOP were investigated, demonstrating the practicality of theUV/chlorines AOP for the control of some refractory PPCPs.

TL;DR: UV/chlorine oxidation showed a significant synergistic effect on CBZ degradation through generation of radical species (OH and Cl), and this process could be well depicted by pseudo first order kinetic.

TL;DR: The qualitative and quantitative analyses revealed that the number of paint microparticles significantly increased below the size range of 50 μm due to their brittleness, and inductively coupled plasma mass spectrometry measurements showed that both colored particles found in nature as well as virgin particles contain a high variety of metals.

TL;DR: Comprehensively considering the cost, renewability, and the application to real water samples, the carbonaceous nanocomposites have potential in removal of SMT and possibly other persistent organic pollutants from wastewater.

TL;DR: Results confirmed that biochar accelerated the initiation of methanization during anaerobic digestion under double inhibition risk from both ammonium and acids, and fine biochar significantly promoted the production of volatile fatty acids (VFAs).

TL;DR: A comprehensive review on recent advances in synthesis of FeS particles (including nanoscale FeS); and reactivity ofFeS towards a variety of common environmental contaminants in groundwater and soil over extended periods of time is provided.

TL;DR: It appears that understanding of thermodynamic and rheological properties of sludge is key to optimizing the process, however these parameters are largely overlooked by the literature.

TL;DR: This study presented evidence that the most straightforward biological origin of an ARG-species co-occurring event is a hosting relationship, and demonstrated a creative and effective network-based metagenomic approach for exploring ARG hosts and HBP indicators and assessing ARGs acquisition by HBPs in human-impacted environments where ARGs and HBPs may co-thrive.

TL;DR: The results indicate that certain improvements in biological micropollutant removal can be achieved by combining different aerobic and anaerobic treatments, but that these improvements are restricted to a limited number of compounds.

TL;DR: Beta-lactam, glycopeptide, and fluoroquinolone classes were largely eliminated by biological wastewater treatment processes, whereas trimethoprim and lincosamides appeared to be persistent.

TL;DR: These nanoparticle-matrix materials are of great interest for metals and metalloids removal thanks to the functional groups of the polymeric matrixes that provide specific bindings to target pollutants.

TL;DR: The importance of RCS, in particular, ClO, in the degradation of micropollutants in the UV/chlorine process was demonstrated and it was verified that ClO mainly attacked the trimethoxybenzyl moiety of TMP.

TL;DR: New insights are given into the design and preparation of iron NPs encapsulated in B, N-codoped carbon nanotubes as an effective strategy to enhance the overall catalytic activity of Fe@C-BN.

TL;DR: It was found that the degradation efficiency of atrazine was enhanced by UV/chlorine compared to UV or chlorine alone, and was favorable at a lower pH, but was inhibited in the presence of natural organic matters.

TL;DR: The theoretical analysis suggests that nanosilver dissolution could occur under anoxic conditions and that Nanosilver may be sulfidized to form silver sulfide (Ag2S) under strict anaerobic conditions, but more investigation with carefully-designed experiments is required to confirm the analysis.

TL;DR: This review aims to summarize the current knowledge related to the stability of commonly investigated drugs and suggest a more effective approach to future experiments, and proposes a set of parameters that should be reported for in-sewer stability experiments.

TL;DR: Pyrite- EF showed a better performance for the oxidation/mineralization of the drug SMT in comparison to the classic EF process: 95% and 87% TOC removal by Pyrite-EF with B DD and Pt anodes, respectively, versus 90% and 83% by classical EF with BDD and PtAnode, respectively.