Ascorbic acid-mediated reductive cleaning of iron-fouled membranes from submerged membrane bioreactors

Zhang, Zhenghua; Bligh, Mark W.; Waite, T. David

doi:10.1016/j.memsci.2014.11.040

Cited by 15 publications

(3 citation statements)

References 22 publications

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“…As recent studies on the cleaning of metalbased soils by dissolution, Zhang 35 and Debnath 36 reported the dissolution of iron-based soil using ascorbic acid as a reducing agent, AI-Mayouf reported the dissolution of magnetite using ethylenediamine disuccinic acid as a chelating agent 37 , and Reichard studied the dissolution of goethite using organic acids and siderphores 38 .…”

Section: Introductionmentioning

confidence: 99%

Analysis of Cleaning Process for Several Kinds of Soil by Probability Density Functional Method

2017

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Section: Introductionmentioning

confidence: 99%

Analysis of Cleaning Process for Several Kinds of Soil by Probability Density Functional Method

2017

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“…With the change from HCl to ascorbic acid for chemical cleaning the initial TMP could be restored. The reductive dissolution of iron from fouled membranes using ascorbic acid was already described in former studies [44,45].…”

Section: Hydraulical and Chemical Cleaningmentioning

confidence: 87%

Capillary Nanofiltration under Anoxic Conditions as Post-Treatment after Bank Filtration

Jährig

Vredenbregt

Wicke

et al. 2018

Water

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Bank filtration schemes for the production of drinking water are increasingly affected by constituents such as sulphate and organic micropollutants (OMP) in the source water. Within the European project AquaNES, the combination of bank filtration followed by capillary nanofiltration (capNF) is being demonstrated as a potential solution for these challenges at pilot scale. As the bank filtration process reliably reduces total organic carbon and dissolved organic carbon (DOC), biopolymers, algae and particles, membrane fouling is reduced resulting in long term operational stability of capNF systems. Iron and manganese fouling could be reduced with the possibility of anoxic operation of capNF. With the newly developed membrane module HF-TNF a good retention of sulphate (67–71%), selected micropollutants (e.g., EDTA: 84–92%) and hardness (41–55%) was achieved together with further removal of DOC (82–87%). Fouling and scaling could be handled with a good cleaning concept with acid and caustic. With the combination of bank filtration and capNF a possibility for treatment of anoxic well water without further pre-treatment was demonstrated and retention of selected current water pollutants was shown.

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“…Chemical cleaning dissociates the non-covalent or covalent interactions, or directly breaks the foulant molecular structure, as schematically illustrated in Figure 4. The chemical cleaning agents include acids, alkalis, oxidants, reductants, complexants (chelators), surfactants, and enzymes (Madaeni and Moghadam, 2003;Zondervan and Roffel, 2007;Petrus et al, 2008;Porcelli and Judd, 2010;Shi et al, 2014;Zhang Z. H. et al, 2015). The cleaning mechanisms and reacting targets of the typical agents are summarized in Table 1.…”

Section: Membrane Cleaningmentioning

confidence: 99%

Outlining the Roles of Membrane-Foulant and Foulant-Foulant Interactions in Organic Fouling During Microfiltration and Ultrafiltration: A Mini-Review

Xiao

Wang

et al. 2020

Front. Chem.

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Membrane fouling remains a notorious problem in microfiltration (MF) and ultrafiltration (UF), and a systematic understanding of the fouling mechanisms is fundamental for solving this problem. Given a wide assortment of fouling studies in the literature, it is essential that the numerous pieces of information on this topic could be clearly compiled. In this review, we outline the roles of membrane-foulant and foulant-foulant intermolecular interactions in MF/UF organic fouling. The membrane-foulant interactions govern the initial pore blocking and adsorption stage, whereas the foulant-foulant interactions prevail in the subsequent build-up of a surface foulant layer (e.g., a gel layer). We classify the interactions into non-covalent interactions (e.g., hydrophobic and electrostatic interactions), covalent interactions (e.g., metal-organic complexation), and spatial effects (related to pore structure, surface morphology, and foulants size for instance). They have either short-or long-range influences on the transportation and immobilization of the foulant toward the membrane. Specifically, we profile the individual impacts and interplay between the different interactions along the fouling stages. Finally, anti-fouling strategies are discussed for a targeted control of the membrane-foulant and foulant-foulant interactions.

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Ascorbic acid-mediated reductive cleaning of iron-fouled membranes from submerged membrane bioreactors

Cited by 15 publications

References 22 publications

Analysis of Cleaning Process for Several Kinds of Soil by Probability Density Functional Method

Analysis of Cleaning Process for Several Kinds of Soil by Probability Density Functional Method

Capillary Nanofiltration under Anoxic Conditions as Post-Treatment after Bank Filtration

Outlining the Roles of Membrane-Foulant and Foulant-Foulant Interactions in Organic Fouling During Microfiltration and Ultrafiltration: A Mini-Review

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