Harnessing salinity gradient energy in coastal stormwater runoff to reduce pathogen loading
First demonstration of the capture of salinity gradient energy from stormwater runoff to the ocean, used to power UV-LED disinfection.
UV/chlorine vs. UV/H2O2 for water reuse at Orange County Water District, CA: a pilot study
On-site demonstration tests evaluated 1,4-dioxane removal in reverse osmosis permeate (RO permeate) at the Orange County Water District (OCWD) Advanced Water Purification Facility (AWPF).
Source characterization and removal of N-nitrosamine precursors during activated sludge treatment
Municipal wastewater discharges after secondary biological treatment (e.g., the activated sludge (AS) process) are a major potential source of N-nitrosamine precursors which may impact downstream source water quality.
Advanced electrochemical oxidation for the simultaneous removal of manganese and generation of permanganate oxidant
Emerging electrochemical systems, such as advanced electro-oxidation, provide a potentially powerful alternative to conventional oxidation processes which can often be unsuitable for small, remote and decentralised system applications.
Comparison of the impact of ozone, chlorine dioxide, ferrate and permanganate pre-oxidation on organic disinfection byproduct formation during post-chlorination
Pre-oxidation is commonly used to mitigate the formation of byproducts during post-disinfection.
Detecting hydrogen peroxide reliably in water via ion chromatography: a method evaluation update and comparison in the presence of interfering components
Hydrogen peroxide (H2O2) in complex water matrix can be detected reliably by ion chromatography (IC) due to its superior separation ability.
Assessing disinfection byproduct risks for algal impacted surface waters and the effects of peracetic acid pre-oxidation
Peracetic acid pre-oxidation of algal impacted waters can reduce formation of trihalomethanes but promote formation of haloacetonitriles, due to the degradation of dissolved organic matter and coincident release of intracellular organic matter.
Removal trends of sulfonamides and their ARGs during soil aquifer treatment and subsequent chlorination: effect of aerobic and anaerobic biodegradation
Soil aquifer treatment significantly decreased the SA concentration in recharged synthetic water and aerobic biodegradation played a great role.
On the role of a graphene oxide/titania catalyst, visible LED and ozone in removing mixtures of pharmaceutical contaminants from water and wastewater
Pharmaceuticals removal by photocatalytic ozonation: evaluation of radiation fluence, GO content and GO–TiO2 dosage synergies in ultrapure water photocatalytic ozonation. Two reaction kinetic periods proposed for wastewater photocatalytic ozonation.
Mixture effects of drinking water disinfection by-products: implications for risk assessment
Disinfection by-products (DBPs) in drinking water have been associated with increased cancer risk but effects of known DBPs cannot explain the mixture effects of disinfected water samples.
Low-cost desalination of seawater and hypersaline brine using nanophotonics enhanced solar energy membrane distillation
A stand-alone small-scale nanophotonics enhanced solar membrane distillation (NESMD) testbed was designed, developed, and tested for desalinating seawater and high salinity feedwaters.
Emerging investigator series: engineering membrane distillation with nanofabrication: design, performance and mechanisms
Anti-fouling and durability are two important parameters that are closely associated with the development and deployment of membrane distillation (MD).
Insight into ferrihydrite effects on methanogenesis in UASB reactors treating high sulfate wastewater: reactor performance and microbial community
Ferrihydrite supplemented to establish DIET between iron-reducing bacteria and methanogens with Fe oxides in anaerobic digestion.
Landfill leachate contributes per-/poly-fluoroalkyl substances (PFAS) and pharmaceuticals to municipal wastewater
Widespread disposal of landfill leachate to municipal sewer in the US calls for improved understanding of the relative organic-chemical contributions to the WWTP waste stream and associated surface-water discharge to receptors in the environment.
Emerging investigator series: formation of brominated haloacetamides from trihalomethanes during zero-valent iron reduction and subsequent booster chlorination in drinking water distribution
This study investigated the transformation of a THM mixture and the change of toxicity risk in drinking water distribution systems for the first time.
Reactions of pyrrole, imidazole, and pyrazole with ozone: kinetics and mechanisms
Kinetics and transformation products for the reactions of ozone with pyrrole, imidazole, and pyrazole were determined. For the imidazole–ozone reaction, all possible transformation products were identified, completing the mass balance.
Rapid degradation of PFAS in aqueous solutions by reverse vortex flow gliding arc plasma
Gliding arc plasma discharge is an energy-efficient treatment technology for a broad range of poly- and perfluoroalkyl substances in water.
Emerging investigator series: capacitive deionization for selective removal of nitrate and perchlorate: impacts of ion selectivity and operating constraints on treatment costs
A parameterized costing model was used to investigate the impacts of ion selectivity on water treatment price for selective ion removal with capacitive deionization (CDI) systems.
Organic structure and solid characteristics determine reactivity of phenolic compounds with synthetic and reclaimed manganese oxides
Phenolic substituents and manganese oxide characteristics influence oxidation kinetics and mechanism, as well as the utility of QSARs.
Micro-nanobubble aeration promotes senescence of submerged macrophytes with low total antioxidant capacity in urban landscape water
MNBs may promote senescence of macrophytes with low total antioxidant capacity in urban landscape water and thereby affect ecological restoration.
Fungi characteristics of biofilms from sewage and greywater in small diameter gravity sewers
Fungi characteristics of small diameter gravity sewer (SDGS) biofilms were investigated and influences of wastewater type (rural sewage and greywater) on fungi number, communities and pathogen were analyzed.
Energy recovery in capacitive deionization systems with inverted operation characteristics
Capacitive deionization (CDI) operated under inverted mode involves electronic charging and discharge steps with corresponding ion concentration and desalting coupled with simultaneous energy storage.
Porous carbon nanosheets functionalized with Fe3O4 nanoparticles for capacitive removal of heavy metal ions from water
Porous graphitic carbon nanosheets functionalized by ultrafine Fe3O4 NPs and amino-functionalized activated carbon were developed to construct a hybrids capacitive deionization for efficient removal of multiple heavy metal ions in water.
Podoviridae bacteriophage for the biocontrol of Pseudomonas aeruginosa in rainwater
Bacteriophages targeting Pseudomonas spp. were isolated and characterised for the biocontrol pre-treatment of rainwater.
Membrane fouling in an integrated adsorption–UF system: effects of NOM and adsorbent properties
In the integrated adsorption–UF process, fouling resistance of the cake layer was influenced by the properties of both feed water NOM and adsorbents.
Comparison of qPCR and amplicon sequencing based methods for fecal source tracking in a mixed land use estuarine watershed
Fecal indicator bacteria are commonly used to evaluate water quality and make decisions on designating and restricting use.
Complex organic particulate artificial sewage (COPAS) as surrogate wastewater in anaerobic assays
By mimicking the complex organic matter composition in sewage, COPAS is a readily available and practical alternative in anaerobic lab-scale studies.
Flow cytometric fingerprinting to assess the microbial community response to changing water quality and additives
In this paper, flow cytometry is used as a tell-tale for minor water quality changes to optimize the water quality and biostability during and after treatment.
Oily bilge water treatment using DC/AC powered electrocoagulation
DC and AC powered electrocoagulation were compared for oil removal from bilge water.
Monitoring the integrity of reverse osmosis membranes using novel indigenous freshwater viruses and bacteriophages
Naturally present indigenous fresh water viruses are able to accurately monitor virus rejection of intact and damaged RO membranes, with high sensitivity and similar performance as spiked bacteriophage MS2.
Effects of zinc orthophosphate on the antibiotic resistant bacterial community of a source water used for drinking water treatment
The presence of zinc, and not orthophosphate, was the selective pressure for antibiotic resistance.
A novel strategy using peroxymonosulfate to control the formation of iodinated aromatic products in treatment of phenolic compounds by permanganate
Formation of iodinated aromatic products during Mn(VII) oxidation of phenolic compounds in the presence of I− was reduced by the addition of PMS.
Evaluation of the novel substrate RUG™ for the detection of Escherichia coli in water from temperate (Zurich, Switzerland) and tropical (Bushenyi, Uganda) field sites
The assessment of a novel enzyme-based assay showed it to be reliable to detect and quantify E. coli in water.
Long-term performance evaluation of an anoxic sulfur oxidizing moving bed biofilm reactor under nitrate limited conditions
An anoxic sulfur-oxidizing moving bed biofilm reactor (MBBR) treating sulfur and nitrate-contaminated synthetic wastewater was monitored for 306 days under feed nitrogen-to-sulfur (N/S) molar ratios of 0.5, 0.3 and 0.1.
Waterworks-specific composition of drinking water disinfection by-products
Non-target analysis of potentially toxic disinfection by-products at four waterworks in Sweden.
Biodegradation and attenuation of MIB and 2,4-D in drinking water biologically active sand and activated carbon filters
Biologically acclimated sand and granular activated carbon (GAC) filter performance for trace organic contaminant control is compared under variable water quality and operational conditions.
Tertiary treatment of secondary effluent using ultrafiltration for wastewater reuse: correlating membrane fouling with rejection of effluent organic matter and hydrophobic pharmaceuticals
Permeability loss and the low retention efficiency of soluble organics significantly restrict the application of ultrafiltration (UF) for water reclamation.
Capacitive deionization using symmetric carbon electrode pairs
Scenarios (a)–(c) are created to study the effect of the chemical surface charge of carbon electrodes on capacitive deionization using symmetric carbon electrode pairs.
Microplastic biofilm in fresh- and wastewater as a function of microparticle type and size class
Microplastics are pollutants of concern in the freshwater and marine environments. These microparticles carry biofilm communities unique from the surrounding water.
Effects of geochemical conditions, surface modification, and arsenic (As) loadings on As release from As-loaded nano zero-valent iron in simulated groundwater
This manuscript makes a significant research impact regarding the fate of As-loaded nZVI particles under different geochemical conditions of groundwater downstream.
Membrane-separated electrochemical latrine wastewater treatment
Membrane electrolysis is shown to be durable over one month of continuous operation.
Two-step startup improves pollutant removal in membrane-aerated biofilm reactors treating high-strength nitrogenous wastewater
MABRs with a two-step startup facilitate the formation of layered distribution of nitrifiers and denitrifiers and have higher pollutant removal rates.
Influence of the sublayer structure of thin-film composite reverse osmosis membranes on the overall water flux
The support layer of RO membranes can significantly affect the permeability depending on its sublayer structure.
Elimination of transforming activity and gene degradation during UV and UV/H2O2 treatment of plasmid-encoded antibiotic resistance genes
This study determined deactivation of transforming activity of an ARG and the ARG degradation during UV and UV/H2O2 treatment of plasmid pUC19 containing an ampicillin resistance gene.
Impact of upstream chlorination on filter performance and microbial community structure of GAC and anthracite biofilters
Dechlorination in GAC biofilters leads to greater bioactivity and growth of a diverse microbial community.
1,3,5-Trimethoxybenzene (TMB) as a new quencher for preserving redox-labile disinfection byproducts and for quantifying free chlorine and free bromine
1,3,5-Trimethoxybenzene can be used to quench residual chlorine and bromine without altering disinfection byproducts that are reactive toward traditional quenchers.
About this collection
Here is a collection of recent Environmental Science: Water, Research & Technology articles which have been classified as ‘HOT articles’ due to receiving particularly high scores at peer review.