Applied Sciences

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Dr. Yumeng Zhao

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Guest Editor

State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150001, China
Interests: catalytic membrane filtration; advanced oxidation process
Special Issues, Collections and Topics in MDPI journals

Dr. Jiaojie He

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Guest Editor

School of Civil Engineering, Chang'an University, Xi'an 710061, China
Interests: water and wastewater treatment; advanced oxidation process; catalytic membrane filtration; recalcitrant micropollutant removal

Dr. Jing Kang

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Guest Editor

State Key Laboratory of Urban Water Resources and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
Interests: catalytic oxidation; adsorption; disinfection; membrane separation technology

Special Issue Information

Dear Colleagues,

The 15^th National Congress of Water Treatment Chemistry (NCWTC) is one of the most prestigious events on water treatment in China. NCWTC is jointly hosted by the Water Treatment Chemistry Council of the Applied Chemistry Committee of the Chinese Chemical Society, School of Environment of Harbin Institute of Technology, the State Key Laboratory of Urban Water Resources and Water Environment, and the Ecological Environment Research Center of the Chinese Academy of Sciences. NCWTC is a highly important platform in China that promotes professional communications concerning all aspects of water and wastewater treatment.

Papers published in the Special Issue on “the 15^th National Congress of Water Treatment Chemistry” will be focused on the topics of water decontamination, advanced oxidation processes, electrochemical processes, membrane separation, nitrogen/phosphorus resource recovery, intelligent water management, and water quality and monitoring technology.

Dr. Yumeng Zhao
Dr. Jiaojie He
Dr. Jing Kang
Guest Editors

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Keywords

water decontamination and purification
advanced oxidation processes
electrochemical processes
membrane separation
nitrogen/phosphorus resource recovery
intelligent water management
water quality and monitoring technology

Published Papers (2 papers)

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Research

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13 pages, 1485 KiB

Open AccessArticle

Influence of Magnetic Fields with Induction of 7 T on Physical and Chemical Properties of Aqueous NaCl Solutions

by Ruslan M. Sarimov, Alexander V. Simakin, Tatyana A. Matveeva, Sergey V. Gudkov, Gennady A. Lyakhov, Vladimir I. Pustovoy, Alexey V. Troitskii and Ivan A. Shcherbakov

Appl. Sci. 2021, 11(23), 11466; https://doi.org/10.3390/app112311466 - 3 Dec 2021

Cited by 8 | Viewed by 1925

Abstract

The physicochemical properties of NaCl aqueous solutions in a wide range of concentrations were studied. We determined that constant magnetic fields with an induction of up to 7 T had a significant effect on the physicochemical properties of these solutions. First, we detected a decrease in pH that was dependent on the magnetic field strength both in water and in NaCl solutions. This effect was not associated with the presence of sodium cations or chlorine anions in water. Secondly, with an increase in magnetic field induction the redox potential of aqueous solutions also increased. Magnetic fields did not cause any changes in the concentration of dissolved molecular oxygen in deionized water. In this case, in aqueous solutions of NaCl under the action of a magnetic field, a concentration-dependent tendency to a decrease in the concentration of dissolved molecular oxygen is observed. Third, it was shown that under the action of a magnetic field on a NaCl solution, the rate of hydrogen peroxide generation increased with increasing NaCl concentration. Fourth, the essential role of the primary state of aqueous solutions in relation to the gas composition and gas equilibrium under magnetic influence was established. The work also evaluated the contribution of flow-mixing during sample preparation on the physicochemical properties of the solutions. Full article

(This article belongs to the Special Issue Selected Papers from 15th National Congress of Water Treatment Chemistry)

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Review

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11 pages, 269 KiB

Open AccessReview

Review of Chloride Ion Detection Technology in Water

by Dan Wu, Yinglu Hu, Ying Liu and Runyu Zhang

Appl. Sci. 2021, 11(23), 11137; https://doi.org/10.3390/app112311137 - 24 Nov 2021

Cited by 17 | Viewed by 7493

Abstract

The chloride ion (Cl⁻) is a type of anion which is commonly found in the environment and has important physiological functions and industrial uses. However, a high content of Cl⁻ in water will do harm to the ecological environment, human health and industrial production. It is of great significance to strictly monitor the Cl⁻ content in water. Following the recent development of society and industry, large amounts of domestic sewage and industrial sewage are discharged into the environment, which results in the water becoming seriously polluted by Cl⁻. The detection of Cl⁻ has gradually become a research focus. This paper introduces the harm of Cl⁻ pollution in the environment and summarizes various Cl⁻ detection methods, including the volumetric method, spectrophotometry method, electrochemical method, ion chromatography, paper-based microfluidic technology, fluorescent molecular probe, and flow injection. The principle and application of each technology are described; their advantages, disadvantages, and applicability are discussed. To goal of this research is to find a more simple, rapid, environmental protection and strong anti-interference detection technology of Cl⁻. Full article

(This article belongs to the Special Issue Selected Papers from 15th National Congress of Water Treatment Chemistry)

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