Natural organic matter removal by coagulation during drinking water treatment: A review

The use of nanoparticles in polymeric and ceramic membrane structures: review of manufacturing procedures and performance improvement for water treatment.

The rapidly increasing population, depleting water resources, and climate change resulting in prolonged droughts and floods have rendered drinking water a competitive resource in many parts of the world. The development of cost-effective and stable materials and methods for providing the fresh water in adequate amounts is the need of the water industry. Traditional water/wastewater treatment technologies remain ineffective for providing adequate safe water due to increasing demand of water coupled with stringent health guidelines and emerging contaminants. Nanotechnology-based multifunctional and highly efficient processes are providing affordable solutions to water/wastewater treatments that do not rely on large infrastructures or centralized systems. The aim of the present study is to review the possible applications of the nanoparticles/fibers for the removal of pollutants from water/wastewater. The paper will briefly overview the availability and practice of different nanomaterials (particles or fibers) for removal of viruses, inorganic solutes, heavy metals, metal ions, complex organic compounds, natural organic matter, nitrate, and other pollutants present in surface water, ground water, and/or industrial water. Finally, recommendations are made based on the current practices of nanotechnology applications in water industry for a stand-alone water purification unit for removing all types of contaminants from wastewater.

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A Review of Removal of Pollutants from Water/Wastewater Using Different Types of Nanomaterials

Photocatalytic water treatment using nanocrystalline titanium dioxide (NTO) is a well-known advanced oxidation process (AOP) for environmental remediation. With the in situ generation of electron-hole pairs upon irradiation with light, NTO can mineralize a wide range of organic compounds into harmless end products such as carbon dioxide, water, and inorganic ions. Photocatalytic degradation kinetics of pollutants by NTO is a topic of debate and the mostly reporting Langmuir-Hinshelwood kinetics must accompanied with proper experimental evidences. Different NTO morphologies or surface treatments on NTO can increase the photocatalytic efficiency in degradation reactions. Wisely designed photocatalytic reactors can decrease energy consumption or can avoid post-separation stages in photocatalytic water treatment processes. Doping NTO with metals or non-metals can reduce the band gap of the doped catalyst, enabling light absorption in the visible region. Coupling NTO photocatalysis with other water-treatment technologies can be more beneficial, especially in large-scale treatments. This review describes recent developments in the field of photocatalytic water treatment using NTO.

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Photocatalytic Water Treatment by Titanium Dioxide: Recent Updates

Coupling of membrane filtration and advanced oxidation processes for removal of pharmaceutical residues: A critical review

A silicon-doped TiO2 nanotube arrays electrode with enhanced photoelectrocatalytic activity

Integration of separation and photocatalysis using an inorganic membrane modified with Si-doped TiO2 for water purification

A simple, environmentally friendly and continuous flow method was developed for the determination of COD based on a flow injection analysis (FIA) system, in which a BDD electrode was employed as the detecting element. The structure and the electrochemical behavior of BDD were investigated by a scanning electron microscope, Raman spectroscopy, and cyclic voltammetry, respectively. The results demonstrated that the high-quality BDD film prepared here was suitable to be used as an electrode, with which the COD measurement could be conducted. The effect of several important experimental parameters, such as applied potentials, pH, flow rates, and supporting electrolyte concentrations, on the analytical performance was investigated. Under optimized testing conditions, the proposed method was successfully applied in the COD analysis of synthetic samples. The linear range and the detection limit were 2−175 and 1 mg L−1, respectively. In addition, the COD values determined by the proposed method compared well with...

Flow Injection Analysis of Chemical Oxygen Demand (COD) by Using a Boron-Doped Diamond (BDD) Electrode

Preparation and characterization of BiVO4 film electrode and investigation of its photoelectrocatalytic (PEC) ability under visible light

Temperature-dependence of soil/air partition coefficients for selected polycyclic aromatic hydrocarbons and organochlorine pesticides over a temperature range of −30 to +30 °C

Huimin Zhao

Papers

A silicon-doped TiO2 nanotube arrays electrode with enhanced photoelectrocatalytic activity

Integration of separation and photocatalysis using an inorganic membrane modified with Si-doped TiO2 for water purification

Flow Injection Analysis of Chemical Oxygen Demand (COD) by Using a Boron-Doped Diamond (BDD) Electrode

Preparation and characterization of BiVO4 film electrode and investigation of its photoelectrocatalytic (PEC) ability under visible light

Temperature-dependence of soil/air partition coefficients for selected polycyclic aromatic hydrocarbons and organochlorine pesticides over a temperature range of −30 to +30 °C