Themed collection Environmental Science: Water Research & Technology Recent HOT Articles

A VF CW exhibited low-level production of the components responsible for odor sensation and were similar whether or not VF was operational. VOCs are the only component related to some odor sensation and were higher in the morning.

Major groundwater cations can influence the U(IV) rejection of membranes. Water chemistry modeling, membrane characterization, uranium rejection, and membrane selectivity are investigated, with results showing optimal treatment operation at pH 7.

Rapid magnetic flocculation required a reaction time of only 2 minutes to achieve the ideal pollutant removal efficiency.

Organic-cation modified MWCNTs-based nanocomposite derived membrane to reduce environmental pollution.

An optimized and efficient zinc chloride-based activation of rice straw yielded highly mesoporous carbons with an exceptional ability to adsorb the antibiotic amoxicillin. The maximum adsorption capacity was found to be as high as 1308 mg g⁻¹.

The electrochemically assisted autotrophic Feammox achieves a faster rate of ammonium oxidation through iron cycling with an optimal applied voltage of 0.6 V.

We utilized a BDD anode in a two-electrode system to investigate the degradation of a suite of PFASs in aqueous matrices.

As the most famous wine industry area in China, the concentration of dissolved trace elements (DTEs) in surface water of the Chishui River has attracted attention.

This study proposes a hybrid analytical model integrating two cost–benefit analysis approaches and an analytical stochastic approach for the proper design of infiltration trenches.

The transformation pathway of hydroxylamine and the formation mechanism of nitro(so) by-products during the treatment of phenols using the Fe(II)/peroxymonosulfate/hydroxylamine system are elaborated.

Locating and quantifying sources of metals in a mineralised catchment, using tracer injection and synoptic sampling.

Understanding electrochemical oxidation mechanisms through a combined experimental and computational approach.

We studied reactions between a variety of organic forms of the essential element selenium (Se) and the oxidant hypobromous acid (HOBr). The studied Se compounds, especially selenomethionine, had a high reactivity with HOBr.

14-month performance study of an anaerobic bioreactor combined with electrochemical oxidation and integrated into a self-contained public bathroom under daily use in Coimbatore (Tamil Nadu, India).

A separable bio-adsorbent was created through a straightforward cross-linking process, leading to effective capture of phosphate in both static and dynamic aqueous systems.

Environmental chronic risk generated by wet-weather discharges compared to final effluent was stochastically assessed, also from a climate-change perspective, stressing their growing contribution for many (micro-)pollutants.

An innovative technique based on temperature measurements promises to better understand and manage sediments in urban drainage systems.

Episodic stormwater discharges expose aquatic ecosystems to extensive contaminant mixtures. Cumulative acute risks to multiple aquatic trophic levels are estimated based on contaminant mixtures documented in a US stormwater reconnaissance.

Urban surface-deposited sediments (USDs) with different spatial positions and heights are a mixture of various pollutants with complex sources and are widely distributed in urban environments.

Introduce BDH as a new class of environmentally-friendly antimicrobial biomaterial for water disinfection.

Remediation of water contaminated by oils, using advanced materials and membrane based processes.

The effect of Zn²⁺ on the crystal structure, optical properties, and photocatalytic activity for degradation of perfluoroalkyl substances of Bi₂WO₆ was studied.

Legionella pneumophila was quantified during the COVID-19 pandemic in 26 buildings in three countries to identify factors that influenced positivity.

This study investigated the performance of sequential chemical coagulation–electrooxidation (EO) processes in treating leachate membrane bioreactor (MBR) effluent.

The uncertainty of the changes in the quality of raw water, and the long lag in the process of coagulation introduce significant difficulties in eliminating turbidity during the treatment of drinking water.

Cd(II) could be removed completely by the UV/permanganate process, in which the continuously formed nano-sized MnO₂ played the critical roles in its abatement.

The MB-MPBR can achieve effluent COD, N and P discharge standards in one single step.

In this work, UV/NH₂Cl was utilized to remove ciprofloxacin (CIP) from water and the formation of disinfection by-products (DBPs) following disinfection was investigated to determine its applicability and safety.

Enhancing the degradation of ciprofloxacin in water using Oxone activated by urchin-like cubic and hollow-structured cobalt@N-doped carbon.

Nanobubbles are applied in diverse water-treatment technologies.

Waste biomass sawdust was modified into adsorbent by pyrolysis. The properties of modified sawdust and the mechanism of oil removal were discussed. The modified sawdust was first used to remove emulsified oil from thermal desorption wastewater.

We present a preliminary design for a microbial-enhanced permeable reactive barrier technology for the treatment of nitrate contaminated groundwater.

In this work, a novel amino-functionalized biochar (NS-700) was prepared successfully by pretreating biomass with (NH₄)₂S₂O₈, and could be used for the simultaneous and efficient removal of tetracycline (TC) and Cu(II).

Compared to regulated DBPs such as TCM and TCAA, the significant formation of chloral hydrate and nitrogenous DBPs associated with UV/chlorine treatment needs close scrutiny when considering this process being applied in practice.

Amino acid modified graphene nanosheets adsorb emerging contaminants from tap water outperforming unmodified precursors and activated carbon for carbamazepine, bisphenol A and benzophenone 4. Structure–adsorption relationships are unraveled.

Water pollution caused by the frequent use of combined sewer overflows (CSOs) has been attracting increased media and political coverage in England as in other places in the world.

Per- and poly-fluoroalkyl substances (PFAS) in wastewater solids have resulted in bans on land application of biosolids, causing utilities to explore thermal treatment options.

Novel adsorbents produced from β-lactoglobulin, a low-cost milk protein, have shown a high affinity to inorganic As(III) and As(V).

Although nitrifying microorganisms play an important role in TOrC biotransformation, ammonia-rich environments appear to hinder important cometabolic processes, whereas low-dose monochloramine has minimal impact on biofilter performance.

This is the first study reporting the use of pharmaceutical and illicit drugs by profiling wastewater in Lagos, Nigeria.

Sludge based biochar granules were prepared and modified with lanthanum for effective phosphate recovery from wastewater and anaerobic digestion liquid.

During the piezoelectric catalytic process, highly reactive species might be generated and contribute to the effective degradation of the target organic pollutants.

Sulfidated nanoscale zero-valent iron (S-nZVI) was applied in the treatment of pentachlorophenol (PCP)-polluted water to explore the reaction pathways and the effects of water chemistry on PCP adsorption and transformation.

The use of treated activated carbon (AC) is investigated to eliminate cationic dye malachite green (MG) using modelled dye solution.

QSDsan is an open-source platform that integrates the design, simulation, and sustainability characterization of sanitation and resource recovery systems.

An innovative electroactive membrane was designed with polyelectrolyte modification for electro-PMS activation and degradation of refractory organic contaminants in a flow-through filtration model.

Higher initial DO concentrations could enhance the nitrification reaction and purification process of the raw water.

Sulfonamides (SAs) have been proved to damage organisms if the contact time last over the long term.

The sub-cellular mechanisms by which residual free chlorine (FC) inactivates E. coli O157:H7 and S. enterica in the absence of organic matter was investigated.

rGO–Fe₂O₃ NPs incorporated PVAc based mixed matrix membrane for efficient removal of Pb²⁺ from anti-corrosive paint industrial wastewater.

Elucidation of the galvanic mechanism of selenate reduction by nZVI leads to >99.95% removal and record electron efficiency by suppressing H₂ evolution via in situ Se doping.

A mathematical model for autotrophic biocathodic denitrification of groundwater has been developed. The model predictions captured current demand and energy consumption related to reduction of N-forms.

A new monitoring method has been developed for the rapid assessment of low levels of 137-Cs and its effective concentration and quantification in Fukushima seawater, directly using KCuHCF slurry ink with a 137-Cs recovery exceeding 99% within 30 min.

The presence of sulfate in sewage treatment has obvious impacts on biological nitrogen removal.

The influence of WWTP treatment standard on contaminant breakthrough is explored for 293 compounds.

Recent applications of wastewater-based epidemiology (WBE) have demonstrated its ability to track the spread and dynamics of COVID-19 at the community level.

Role of reactive species in the solar/chlorine process for elimination of diuron and risk of NDMA formation.

Increasing hydraulic residence time (HRT) along a chain of interconnected reservoirs enhances the formation potential of carbonaceous disinfection by-products (DBPs) and reduces the formation potential of nitrogenous DBPs, particularly N-nitrosodimethylamine (NDMA).

Strong-acid functionalized cathode is pH stable and sulfonic groups are stable to charge–discharge cycling.

Spatiotemporal development of anaerobic seed sludge in a new ABR after transfer from a long-running ABR treating low-temperature domestic wastewater.

This study analysed the spatial and temporal occurrence of 29 disinfection by-products (DBPs) formed by chlorination and chloramination.

We compared SARS-CoV-2 RNA concentrations in primary settled solids and raw wastewater samples matched in date to investigate the relationship between the two matrices.

This study implicated stoichiometric limitation of influent organic carbon, unique microbial community enrichment, and differential nitrate and nitrite reduction kinetics as determinant factors in glycerol-driven denitratation.

Daytime-only and continuously mixed HRAPs had equivalent disinfection performance, compliant with reuse guidelines. Daytime-only mixing reduces energy demand and capital cost of wastewater treatment, promoting adoption of HRAPs in rural communities.

Electrode kinetics, gaseous CO₂ dissolution, mass transfer, and equilibrium of pH buffer and bicarbonate are considered to illustrate the bioelectrochemical behaviors of an MES.

Based on coordination chemistry, the removal of Hg²⁺ and the recovery of Ag⁺ are achieved simultaneously by selecting the 4,4′-azo-1,2,4-triazole (Atrz) as an organic ligand only through simple mixing, agitation and filtration.

Novel linear free energy relationships were determined between experimentally measured rate constants of solvated electrons and theoretically calculated one electron reduction potential for the elucidation of reductive reaction mechanisms.

Application of plasma oxidation for removal of pharmaceuticals in urine was assessed and compared to a traditional advanced oxidation process.

Waste streams continuously introduce active and inactive microbial populations that can influence assembly of microbial communities in chain elongation systems.

Sustainable HRT of 3–4 h achieved for MABR effluent with carbon and nitrogen meeting the discharge standard of level I class A in China for synthetic municipal wastewater treatment.