Showing papers in "Water Research in 2017"

TL;DR: The inaccurate use of technical terms, the problem associated with quantities for measuring adsorption performance, the important roles of the adsorbate and adsorbent pKa, and mistakes related to the study of adsor adaptation kinetics, isotherms, and thermodynamics are discussed.

TL;DR: There is still no universal accepted quantification and qualification tools of microplastics in fresh waters, and more work is anticipated to obtain accurate information on microplastic in freshwater, which can then be used for the better assessment of the environmental risk.

TL;DR: It is suggested that WWTPs could be a sink but also a source of MP and thus can be considered to play an important role for environmental MP pollution.

TL;DR: The study shows that with advanced final-stage wastewater treatment technologies WWTPs can substantially reduce the MP pollution discharged from wastewater treatment plants into the aquatic environments.

TL;DR: This review summarized the updated information on foulants composition and characteristics in MBRs, which greatly improves the understanding of fouling mechanisms, and the emerging fouling control strategies are comprehensively reviewed.

TL;DR: It is suggested that although low concentrations of microplastics are detected in wastewater effluent, WWTPs still have the potential to act as a pathway to release microplastic given the large volumes of effluent discharged to the aquatic environment.

TL;DR: The efficient generation of 1O2 using the PS/CNTs system without any light irradiation can be employed for the selective oxidation of aqueous organic compounds under neutral conditions with the mineralization and toxicity evaluated.

TL;DR: The metagenomic analysis showed that the activated sludge and the digested sludge exhibited different microbial communities and changes in the types and occurrence of ARGs and MGEs, and indicated that some environmental bacteria might be potential hosts of multiple ARGs.

TL;DR: Even though some hybrid processes show promising micropollutant removals, further studies are needed to optimize these water treatment processes, in particular in terms of technical and economical competitiveness.

TL;DR: Despite of the high removal performance, even an advanced WWTP may constitute a considerable source of microlitter and microplastics into the aquatic environment given the large volumes of effluent discharged constantly.

TL;DR: Ecotoxicity of transformation products was estimated by ECOSAR program based on the quantitative structure-activity relationship analysis as well as by experiments using Vibrio fischeri, and results indicated that the oxidation of SO4- or CO3- with SMX generated more toxic products than those of OH.

TL;DR: This article integrates and critically evaluates what is known about these newly identified PFASs, and surveys the removal of these compounds during conventional and advanced drinking-water and wastewater treatment, predicts the relevant physicochemical properties by means of four software programs, and identifies major knowledge gaps.

TL;DR: High-throughput sequencing analysis revealed that Thauera genera were dominant in both SBRs and possibly played a key role for partial-denitrification with high NO2--N accumulation and the Denitratisoma capable of complete denitrification (NO3--N→N2) was found in R2 that might lead to lower NTR.

TL;DR: In this paper, the pertinent practical, theoretical and social aspects of rainwater harvesting are reviewed in order to ascertain the state of the art and a major finding is that the degree of RWH systems implementation and the technology selection are strongly influenced by economic constraints and local regulations.

TL;DR: This critical review discusses the state of the art on the fate of antibiotics, ARB and ARGs in agricultural environment where RWW is applied for irrigation, and the implications associated with the uptake of antibiotics by plants and the potential risks to public health are highlighted.

TL;DR: A global modelling approach is presented to analyse the composition and quantity of point-source microplastic fluxes from European rivers to the sea and calculates a reduction in river export of microplastics from point-sources, mainly due to an anticipated improvement in sewage treatment.

TL;DR: The results indicate that designers and operators of AE and GAC treatment processes must take into consideration the selective nature of PFAS removal and associated desorption of short-chain PFCAs during co-removal of multiple PFASs.

TL;DR: Overall the review reveals significant advances in the understanding of the interactions between IOCs and carbonaceous sorbents, with special attention being given to emerging sorption mechanisms including low-barrier, charge-assisted hydrogen bonds and cation-π assisted π-π interactions.

TL;DR: The number of microbeads emitted into the aquatic environment in Mainland China every year far exceeds the previous estimate of plastic debris on the world's sea surface.

TL;DR: This literature survey includes a summary of adsorption of OCs by GNS, a comprehensive discussion of the mechanisms and factors controlling the adsorptive behaviors of graphene oxides and a comparison of their adsorbents behaviors with those of CNT.

TL;DR: This review provides a comprehensive survey of characteristic anaerobic biotransformation reactions for a variety of well-studied, structurally rather simple contaminants (SMOCs) bearing one or a few different functional groups/structural moieties.

TL;DR: The developed La(OH)3/Fe3O4 (4:1) nanocomposite has an excellent magnetic separation efficiency, fast sorption kinetics of 30 min, high sorption capacity of 83.5 mg P/g, and strong selectivity for phosphate in presence of competing ions.

TL;DR: The effects of the treatment conditions and the water matrix components of natural organic matter, alkalinity, ammonia and halides, on the kinetics and reactive species in the degradation of four micropollutants, metronidazole (MDZ), nalidixic acid (NDA), diethyltoluamide (DEET) and caffeine (CAF), by the UV/chlorine process were investigated.

TL;DR: In this paper, magnetite and granular activated carbon (GAC) were respectively supplemented to acidogenesis and methanogenesis of a two-phase anaerobic digestion (AD) system in an attempt to explore their different mechanisms.

TL;DR: This study provides the first information on the occurrence of selected ECs and ARGs in raw leachate from 16-year old closed landfill site in Singapore and found the vast majority of ECs exhibited excellent removal efficiencies in the investigated hybrid CW system.

TL;DR: Variation partitioning analysis indicated that bacterial community played a more important role in the resistome alteration than mobile genetic elements, and may help to understand the correlations among antibiotic resistome, microbiota and environmental conditions in the wastewater-receiving river water.

TL;DR: This study systematically investigates the impact of the surface wetting properties on the membrane wetting and/or fouling behaviors in MD and provides a holistic picture regarding how a hydrophobic membrane fails inMD and how to leverage membranes with special wettability to prevent membrane failure in MD operations.

TL;DR: The electrode potentials required for the induction of Faradaic reactions were analyzed, providing robust thermodynamic explanations for the occurrence of carbon oxidation at the anode and H2O2 generation at the cathode during the ion adsorption process.

TL;DR: The microbial community analysis showed that the relative abundance of phyla Actinobacteria and Proteobacteria increased with the increased pH, which may lead to the maximum hydrolysis at pH 9.9.

TL;DR: Four possible SMX degradation pathways were accordingly proposed in the Fe0/S(IV)/O2 system based on experimental methods and DFT calculation to reveal special reactive sites on SMX for radicals attacking and predicted intermediates.