Advanced removal of phosphate from water by a novel lanthanum manganese oxide: Performance and mechanism.

A novel lanthanum manganese oxide (LaMnO, LMO) was synthesized for advanced phosphate removal to alleviate water eutrophication process. The adsorbent had a specific surface area of 18.51 m/g with pH at point of zero charge of 6.

Fabrication of Bi-BiOCl plasmon photocatalysts for removal of aqueous emerging contaminants under visible light.

Photocatalytic oxidation of emerging contaminants (ECs) in water has recently gained extensive attentions. In this study, bismuth oxychloride-based plasmon photocatalysts (Bi-BiOCl) exhibiting high performance were successfully developed by reducing Bi on the surface of BiOCl. Consequently, the photocatalysts were used to remove ECs from water.

Life cycle assessment of deploying sludge minimization with (sulfidogenic-)oxic-settling-anaerobic configurations in sewage-sludge management systems.

This study conducted life-cycle evaluation (on the greenhouse gas (GHG) emissions, energy consumption and economic performance) and sensitivity analysis in nine scenarios considering the deployment of conventional anoxic/oxic (AO) and/or sludge-minimizing (OSA, SOSA) bioprocess for sewage treatment linking with subsequent sludge handling. The analysis results demonstrated that compared with conventional AO-based scenarios, OSA- and SOSA-based scenarios reduced 23-28% GHG emissions (GHGs) and 18-24% cost, despite no significant electricity consumption reduction. The scenario analysis indicates renewable energy and improving energy consumption efficiency benefit the application of OSA and SOSA.

Preparation and application of BiOBr-BiS heterojunctions for efficient photocatalytic removal of Cr(VI).

Recently, the photocatalytic reduction of Cr(VI) has been extensively studied. Herein, we successfully prepared the BiOBr-BiS heterojunctions with high photocatalytic Cr(VI) reduction performance using an ion exchange method. The optimal BiOBr-BiS heterojunction (prepared with BiOBr, pH of 6.

MnCeO with high efficiency and stability for activating persulfate to degrade AO7 and ofloxacin.

An efficient MnCeO composite was successfully synthesized for activation of persulfate to degrade acid orange 7 (AO7) and ofloxacin. Pollutants degradation efficiencies with different catalytic systems were investigated. Results showed the performance of MnCeO was better than MnO CeO and MnO + CeO.

A High-Efficiency CuO/CeO Catalyst for Diclofenac Degradation in Fenton-Like System.

An efficient Fenton-like catalyst CuO/CeO was synthesized using ultrasonic impregnation and used to remove diclofenac from water. The catalyst was characterized by N adsorption-desorption, SEM-EDS, XRD, HRTEM, Raman, and XPS analyses. Results showed that CuO/CeO possessed large surface area, high porosity, and fine elements dispersion.

Iron Based Catalysts Used in Water Treatment Assisted by Ultrasound: A Mini Review.

The characteristics and performances of catalyst are the key in catalytic ultrasonic treatment of wastewater, and iron based catalysts are known for low cost, high accessibility and safety. This paper reviewed the current research status of iron-based catalysts in water treatment assisted by ultrasound. Zero valent iron, FeO and iron composited with other metals were analyzed, their behaviors in catalytic sonochemistry were summarized, and the potential catalytic mechanisms were discussed in details.

Ultrasonic impregnation of MnO/CeO and its application in catalytic sono-degradation of methyl orange.

MnO/CeO catalyst was prepared by ultrasonic impregnation method. The traditional and stirring impregnation methods were used as control. Results showed that ultrasonic impregnation was the best synthesis method.

Effects and mechanism of diclofenac degradation in aqueous solution by US/Zn.

A system of ultrasound radiation coupled with Zn was applied to degrade diclofenac. The effects of initial pH, dosage of Zn and ultrasound density were investigated. To further explore the mechanism of the microcosmic reaction, the fresh and used Zn powders were characterized by SEM, XRD and XPS.

Synthesis of yolk-shell mesoporous silica nanoparticles via a facile one-pot approach.

A facile one-pot method is proposed for the fabrication of yolk-shell mesoporous silica nanoparticles with high special surface area. The particle size can be well controlled by moderately tuning some experimental parameters.

Degradation of aniline by heterogeneous Fenton's reaction using a Ni-Fe oxalate complex catalyst.

A Ni-Fe oxalate complex catalyst was synthesized and characterized by means of Brunauer-Emmet-Teller (BET) method, scanning electron microscope (SEM) and X-ray photo-electron spectroscopy (XPS). The catalyst showed good catalytic activity for aniline degradation by heterogeneous Fenton's reaction, in which the synergetic index was 9.3.

Preparation of FeCeOx by ultrasonic impregnation method for heterogeneous Fenton degradation of diclofenac.

FeCeOx has been successfully synthesized by ultrasonic impregnation method and applied in diclofenac removal in heterogeneous Fenton process. The effects of ultrasonic density, impregnation time, mole ratio of Fe and Ce and calcination temperature were investigated. Nitrogen adsorption/desorption, SEM, XRD, HRTEM, Raman and XPS analyses were characterized.