Rapid expansion of the unconventional oil and gas extraction has increased American energy independence, but also led to increased production of large amounts of contaminated water. Wastewater from the oil and gas industry contains a wide range of contaminants. Injecting such contaminated water into disposal wells or discharging it to the environment jeopardizes freshwater resources. Conventional and

The activation of peroxymonosulfate (PMS) has been developed as an efficient method for the degradation of antibiotics by generating reactive oxygen species (ROS), where perovskite oxides have been found as effective catalysts. However, the reaction mechanism, degradation pathways, as well as the effects of co-existing inorganic anions and natural organic matter are largely unknown. Therefore, the

In this research, novel chemically Expanded Graphite (EG) modified by magnesium oxide (MgO) nanoparticles were synthesized and applied to remove phosphate from aqueous solutions. The seawater was also used instead of magnesium Chloride (MgCl2) as a source of magnesium ions which indicated similar promising results. Different analyses investigated the characteristics of the adsorbent. The Field-Emission

Microplastic (MP) pollution steadily evolves into an alarming issue for global food security and the wellness of modern society. The increasing number of reports reveal the micro- and nanosized plastic fragments at almost every place on earth from the ocean bottom to the mountain top. MPs were also found in many living species, including humans. The omnipresence of MPs had put on the agenda the necessity

Many emerging organic pollutants exist as cationic residues at environmentally relevant pH. This indicates a need to develop economically viable and robust methods to remove such residues from environmental waters. In this paper, we report using polymer inclusion membranes (PIMs) containing anacardic acid (AA), sourced from cashew nut shells, as an acidic carrier for the extraction and transport of

Waterborne pathogens including viruses, bacteria and micropollutants secreted from population can spread through the sewerage system. In this study, the efficiency of unique effervescent ferrate-based tablets was evaluated for total RNA and DNA removal, disinfection and degradation of micropollutants in hospital wastewater. For the purpose of testing, proposed tablets (based on citric acid or sodium

Pharmaceutical compounds in wastewater are currently becoming emerging concern as the utilization of drugs in anthropogenic activities. This research analyzed the effectiveness of pilot-scale vertical subsurface flow constructed wetland (VSSFCW) planted with Scirpus grossus using an aeration system for simultaneous removal of ibuprofen, chemical oxygen demand (COD) and nutrients (NH3-N, NO3-N, and

The effect of varying COD/N ratio (1:1, 3:1, 5:1, 8:1, 10:1) of wastewater and intermittent aeration on treatment efficiency of biochar (BC)-packed (with 10% V/V biochar) vertical flow constructed wetland (VFCW), planted with Colocasia esculenta was assessed in this study. Three setups of VFCW were prepared in two sets: aerated (with an airflow rate of 1.0 ± 0.6 L min−1 for 6 h d−1) and non-aeration

Microplastics (MPs) have been recently detected in the Surabaya River, Indonesia, which is used as raw water for water supply. This condition has aroused concern about MP presence in the treated water in Surabaya drinking water treatment plants (DWTPs). This study aimed to investigate the MP abundance and characteristics of the raw and treated water and the removal efficiencies in each treatment unit

Wastewater treatment plants (WWTPs) influent conditions can dramatically affect a treatment unit's state and effluent quality. WWTP sensors may record faulty measurements due to abnormal events or the malfunction of the system, leading to serious problems in the system's operation and the violation of effluent discharge standards. Therefore, automatic fault detection and faulty data reconciliation

The preparation of novel iron oxide-flax seeds-based hybrid nanocomposite, referred to as magnetic flax-seeds, and its application for water treatment has been reported herein. A simple co-precipitation method was followed and the detailed mechanism of the preparation has been discussed. The prepared magnetic flax-seeds powder was characterized by employing several spectroscopic and microscopic techniques

In this study, a composite biologically active filter (BAF) packed with suspended biological carrier (SBC), zeolite, and granular activated carbon (GAC) in order, was set to pretreat the algae-laden synthetic raw water. Over the long-term operation, stable and effective treatment was achieved under the algae concentration as high as 16.64 × 108 cell/L, with average removal efficiencies of NH4+-N, Total

Turbidity is a common pollutant parameter in water and wastewater treatment that can be reduced through flocculation. This research was conducted to characterise and analyse the potential of bioflocculant-producing bacteria isolated from aquaculture effluent. Samples were taken from two different aquaculture farms that represent brackish and freshwater cultures. A total of 21 different colonies were

The explosion in urban population are increasing burdens on water and energy systems, which ultimately release harmful pollutants such as wastewater and toxic gases into the natural ecosystems. In order to eliminate these pollutants, the production of vehicular quality biodiesel along with the phycoremediation of wastewater using two different Chlorella species (Chlorella minutissima and Chlorella

A single-level biological aerated filter (BAF) was used to treat domestic wastewater. The response surface method (RSM) model was applied to optimize the operating parameters such as hydraulic retention time (HRT), reflux ratio (R), and aeration-stop ratio. The characteristics of the wastewater were analyzed. The results showed the average removal efficiencies for COD, TN, and NH4+-N were 87.77, 75

A physically cross-linked polyacrylic acid-grafted hydroxyethyl cellulose and polyvinyl alcohol [PAA-g-(HEC-PVA)]–Fe3+ containing graphitic-like carbon nitride (ZnO-g-C3N4) was constructed to enhance the adsorption capacity of methylene blue dye (MB). The ZnO-g-C3N4 and the grafts were investigated by TEM, ART-IR, XRD and SEM. Swelling properties showed reasonable responses to physical crooslinker

Artificial mixing is considered as one of the most effective methods for controlling cyanobacterial blooms. However, the success rate of this method is still very low, and whether it could be successfully applied to shallow waters remains unclear. In the current study, a self-designed moving aeration device was employed in an extremely eutrophic shallow pond with water depth of 1.5 m. A similar pond

The disposal of untreated or partially treated brewery wastewater can cause pollution problems to the receiving water bodies. The objective of this study was to evaluate the effectiveness of a two-stage horizontal subsurface flow constructed wetland (HSSFCW) system planted with Cyperus alternifolius and Typha latifolia in polishing an up-flow anaerobic sludge blanket (UASB) reactor treating brewery

Climate change, population growth and increasing regulation are causing wastewater treatment plants to become increasingly stressed, especially in countries like the UK, where many of these systems date back to the early part of the 20th century. Understanding resilience dynamics for these ageing wastewater assets represents a fundamental step in classifying multi-dimensional water stressors toward

Over the past decades, several materials utilized as biocarriers for immobilization of microorganisms have been gaining popularity showing different degrees of effectiveness. However, information concerning their effects on sequencing batch biofilm reactors (SBBR) performance is still lacking. There is currently no single widely acceptable material documented for proper biofilm formation, as most materials

AGS technology has been studied for decades, and many successful experimental research approaches and full-scale processes have been proposed. However, a precise, comprehensive understanding of the granulation mechanism remains lacking. In this study, sequencing batch reactors were partially inoculated with (S1) or without AGS (S2) to explore aerobic granulation performance in simulative low-strength

The fluoride removal capability of a new industrial-based chemical coagulant (Formula A) in one- and two-stage coagulation treatments was investigated in present study. Three main controlling factors, the coagulant concentration, reaction time and the initial pH of Formula A were studied on the fluoride removal accordingly, with the aid of other coagulants: Ecogent F-Loc, potassium ferrate (K2FeO4)

In this work, a new methodology has been developed for the elimination of cobalt, nickel and a mixture of both metals from synthetic wastewater in a continuous way. This methodology consists of the electrochemical formation of ferrites of these metals through the oxidation of iron sheets and the reduction of water. Two critical process parameters, current densities and initial pollutant concentration