Nanofiltration desalination of reverse osmosis concentrate pretreated by advanced oxidation with ultrafiltration: Response surface optimization and exploration of membrane fouling

Song, Wanchao; Li, Na; Ding, Shaoxuan; Wang, Xiaoyan; Li, Huawei; Zhang, Yonghui; Feng, Xuedong; Lü, Jie; Ding, Jincheng

doi:10.1016/j.jece.2021.106340

Cited by 17 publications

(6 citation statements)

References 40 publications

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“…One approach to deciphering the interactive impacts of multiple parameters, such as ion presence, on AOTs is through Response Surface Methodology (RSM). This technique has been previously utilized to study the inhibitory effects of various operational parameters on AOTs. , In the present study, we employed RSM to investigate the combined influence of several coexisting ions on three distinct electrocatalytic processes (refer to Tables S2–S4). By incorporating three key factorsCl – ( x 1 ), H 2 PO 4 – ( x 2 ), and NO 3 – ( x 3 )into the RSM analysis, we predicted the degradation efficiency of SMX within a 4 min time frame across the EO-Fe(III)-PMS ( y 1 , %), EO-Fe(III)-PDS ( y 2 , %), EO-Fe(III)-H 2 O 2 ( y 3 , %) processes (eq –). y 1 ( % ) = 92.66 − 5.65 x 1 + 28.32 x 2 + 15.77 x 3 + 17.70 x 1 x 2 − 6.29 x 1 x 3 − 37.98 x 2 x 3 + 4.34 x 1 2 − 32.72 x 2 2 + 1.31 x 3 2 y 2 ( % ) = 62.50 − 0.07 x 1 + 9.09 x 2 + 4.75 x ...…”

Section: Results and Discussionmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

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Insights of Electrocatalytic Oxidation Mechanisms Utilizing Different Oxidants for Degradation of Organic Pollutants: Option for Sustainability

Long,

Li,

Huang

et al. 2024

ACS Sustainable Chem. Eng.

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In this study, three electrochemical cocatalytic oxidation (EO) systems using different oxidants peroxysulfate (both PMS and PDS) and hydrogen peroxide (H 2 O 2 ) were compared. These systems were analyzed for their degradation mechanisms and pathways of organic pollutants, specifically sulfamethoxazole (SMX), carbamazepine (CBZ), and bisphenol A (BPA). Based on quenching experiments and electron paramagnetic resonance (EPR) analyses, the EO-Fe(III)-PMS system generated multiple reactive oxygen substances (ROS) including SO 4•− , • OH, and 1 O 2 . The EO-Fe(III)-PDS process primarily utilized • OH and SO 4 •−, with • OH being the dominant oxidation agent. The EO-Fe(III)-H 2 O 2 system chiefly depended on • OH, which exhibited the highest yield among the three systems. Response surface methodology (RSM) analysis suggested that the EO-Fe(III)-PMS process was less influenced by the complex water matrices. The degradation pathways for SMX, CBZ, and BPA were predicted by leveraging mass spectrometry (MS) data. Biotoxicity assessments revealed that the EO-Fe(III)-H 2 O 2 system is the most apt for SMX elimination. Meanwhile, the EO-Fe(III)-PMS system displayed environmentally friendly characteristics during CBZ oxidation compared to the other two systems. Overall results indicate the pros and cons of electrochemical catalytic systems utilizing different oxidants, offering insights into future options of treatment strategies based on their individual merits and sustainability.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

Insights of Electrocatalytic Oxidation Mechanisms Utilizing Different Oxidants for Degradation of Organic Pollutants: Option for Sustainability

Long,

Li,

Huang

et al. 2024

ACS Sustainable Chem. Eng.

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“…A gradient of TMP was set to 0.3, 0.5, 0.7, and 0.9 MPa [ 40 ]. A gradient of temperature was set to 20, 25, and 30 °C [ 41 ]. A gradient of crossflow velocity was set to 4, 7, and 10 cm/s [ 42 ].…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Membrane Fouling Control for Brackish Water Treatment Using a Modified Polyamide Composite Nanofiltration Membrane

et al. 2022

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In northwest China, the limited amount of water resources are classified mostly as brackish water. Nanofiltration is a widely applied desalination technology used for brackish water treatment; however, membrane fouling restricts its application. Herein, we modified the membrane with triethanolamine (TEOA) and optimized the operating conditions (transmembrane pressure, temperature, and crossflow velocity) to control the nanofiltration membrane fouling by brackish water. Based on the physiochemical characteristics and desalination performance of the prepared membranes, the membrane modified with 2% TEOA (MPCM2) was identified as the optimal membrane, and 0.5 MPa, 25 °C, and 7 cm/s were identified as the optimal operating conditions through a series of nanofiltration experiments. Moreover, the membrane cleaning procedure for fouled MPCM2 was further determined, and a two-step cleaning procedure using ethylene diamine tetraacetic acid disodium followed by HCl with a permeance recovery rate of 98.77% was identified as the optimal cleaning procedure. Furthermore, the characterizations of the fouled and cleaned MPCM2 showed that the optimized cleaning procedure could recover the properties of MPCM2 to near virgin. This study is of great significance for the long-term stable operation of nanofiltration processes in brackish water treatment to ensure the supply of healthy water in the water-deficient areas of northwest China.

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“…Due to the different crystallinity levels of FeO x and MnO x , FeO x does not show an obvious cleaning effect [ 99 ]. Song et al reported that using NaOH + EDTA as a cleaning agent can achieve the effective regeneration of membrane flux, and using NaClO + HCl can further improve the recovery rate of membrane flux to 99.2% [ 147 ]. Zhou et al believed that the development of self-cleaning ability in electrochemical membranes was mainly caused by the partial mineralization or oxidation of pollutants.…”

Section: Contribution Of Pretreatment Scheme For Ep Removalmentioning

confidence: 99%

Reduction of Ultrafiltration Membrane Fouling by the Pretreatment Removal of Emerging Pollutants: A Review

Zhang

Yuan

et al. 2023

Membranes

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Ultrafiltration (UF) processes exhibit high removal efficiencies for suspended solids and organic macromolecules, while UF membrane fouling is the biggest obstacle affecting the wide application of UF technology. To solve this problem, various pretreatment measures, including coagulation, adsorption, and advanced oxidation, for application prior to UF processes have been proposed and applied in actual water treatment processes. Previously, researchers mainly focused on the contribution of natural macromolecular pollutants to UF membrane fouling, while the mechanisms of the influence of emerging pollutants (EPs) in UF processes (such as antibiotics, microplastics, antibiotic resistance genes, etc.) on membrane fouling still need to be determined. This review introduces the removal efficiency and separation mechanism for EPs for pretreatments combined with UF membrane separation technology and evaluates the degree of membrane fouling based on the UF membrane’s materials/pores and the structural characteristics of the cake layer. This paper shows that the current membrane separation process should be actively developed with the aim of overcoming specific problems in order to meet the technical requirements for the efficient separation of EPs.

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Nanofiltration desalination of reverse osmosis concentrate pretreated by advanced oxidation with ultrafiltration: Response surface optimization and exploration of membrane fouling

Cited by 17 publications

References 40 publications

Insights of Electrocatalytic Oxidation Mechanisms Utilizing Different Oxidants for Degradation of Organic Pollutants: Option for Sustainability

Insights of Electrocatalytic Oxidation Mechanisms Utilizing Different Oxidants for Degradation of Organic Pollutants: Option for Sustainability

Evaluation of Membrane Fouling Control for Brackish Water Treatment Using a Modified Polyamide Composite Nanofiltration Membrane

Reduction of Ultrafiltration Membrane Fouling by the Pretreatment Removal of Emerging Pollutants: A Review

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