A new perspective of membrane fouling control by ultraviolet synergic ferrous iron catalytic persulfate (UV/Fe(II)/PS) as pretreatment prior to ultrafiltration

Chang, Xinqiang; Lin, Tao; Wei, Chen; Tao, Hui; Wu, Yue‐Hong; Zhang, Qingwen; Yao, Shuntian

doi:10.1016/j.scitotenv.2020.139711

Cited by 41 publications

(26 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reactive oxygen species in FeS 2 /PS system were explored by adding MeOH and TBA. The reaction rate constants of MeOH with HOc and SO 4 c − were 1.9 × 10 9 M −1 s −1 and 1.6 × 10 7 M −1 s −1 respectively, 40,41 so MeOH could scavenge both HOc and SO 4 c − when the concentration of methanol was much higher than that of the target compound. Moreover, the reaction rate constants of TBA with HOc and SO 4 c − were 3.8-7.6 × 10 8 M −1 s −1 and 4.0-9.1 × 10 5 M −1 s −1 respectively, 42,43 so TBA could scavenge HOc but not SO 4 c − by the same way.…”

Section: Resultsmentioning

confidence: 98%

Degradation of ciprofloxacin by persulfate activated with pyrite: mechanism, acidification and tailwater reuse

Hui

Liu

et al. 2022

RSC Adv.

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 98%

Degradation of ciprofloxacin by persulfate activated with pyrite: mechanism, acidification and tailwater reuse

Hui

Liu

et al. 2022

RSC Adv.

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

“…A significant challenge of UF membranes that increases separation cost and energy consumption is the membrane fouling, which subsequently reduces the membrane permeability. 64 The first sign of fouling phenomena in a membrane is flux decline. Membrane fouling as a function of surface hydrophilicity and surface roughness can be created by hydrogen bonds and electrostatic and van der Waals forces between the membrane surface and contaminants.…”

Section: Resultsmentioning

confidence: 99%

Polyvinylidene Fluoride/Nanoclays (Cloisite 30B and Palygorskite) Mixed Matrix Membranes with Improved Performance and Antifouling Properties

Dehghankar

Mohammadi

Tavakolmoghadam

et al. 2021

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

In this study, it was attempted to prove the effectiveness of nanoclays as economical and nontoxic nanofillers through comparison with carbon nanotubes (CNTs). Two hydrophilic nanoclays, namely, Cloisite 30B and palygorskite (PGS), were used as nanofillers to improve the morphology and performance of polyvinylidene fluoride (PVDF) ultrafiltration (UF) membranes. A nonsolvent-induced phase separation (NIPS) method was used to prepare mixed matrix membranes (MMMs). The effects of the nanoclays on morphology, performance, and antifouling properties of the prepared MMMs were investigated. It was found that compared to PVDF membranes, the hydrophilicity, antifouling properties, and morphology of the fabricated MMMs are improved significantly. Compared to PVDF membranes, pure water flux (PWF) values of the MMMs containing the optimum contents of Cloisite 30B (0.5 wt %) and palygorskite (1 wt %) improved by 44.7 and 61.7%, respectively. Acid-treated CNTs were used as a reference additive, and the performance and antifouling properties of the prepared PVDF/nanoclay MMMs were compared with the prepared PVDF/acid-treated CNT MMMs. It was found that the PWF values of the MMM containing optimum contents of PGS and Cloisite 30B nanoclays are 86 and 77%, respectively, compared with that of the MMM containing acid-treated CNTs. The PVDF/Cloisite 30B MMM exhibited lower PWF than the PVDF/PGS MMM, which could be attributed to the plate-like structure of Cloisite 30B. Also, the flux recovery ratio (FRR) values of the mixed matrix membranes containing optimum contents of PGS and Cloisite 30B nanoclays were 95.65 and 92.06%, respectively, compared to that of the MMM containing acid-treated CNTs. Also, the BSA rejections of the prepared MMMs containing optimum contents of Cloisite 30B and palygorskite were comparable with that of the MMM containing acid-treated CNTs. Therefore, nanoclays can be suggested as economical and ecofriendly nanofillers for improving the PVDF membrane performance.

show abstract

“…Regarding membrane filtration, the studies include: microfiltration, nanofiltration, ultrafiltration, and reverse osmosis, aiming the efficient retention of organic micropollutants or salts and its main limitation is membrane fouling (Chang et al, 2020), which decreases the permeability significantly and raises the cost of its application; therefore, many studies are oriented to achieve higher resistance to fouling (Wang et al, 2017). Besides, although membrane filtration and advanced oxidation processes are widely used technologies in developed countries, it is not without inconveniences that motivate further research, such as: new materials and membrane fouling, costs in UV and ozone generation (the latter associated with its short half-life), and the generation of highly toxic by-products after the application of advanced oxidation processes (Deng et al, 2019;Hylling et al, 2019).…”

Section: Trends In Research Related To Drinking Water Purificationmentioning

confidence: 99%

Scientometric study of drinking water treatments technologies: Present and future challenges

et al. 2021

View full text Add to dashboard Cite

The knowledge of the tendencies of the drinking water treatments was changing through the previous decades and it is necessary to improve it for the benefit of the human beings. In this sense, the purpose of the study was to develop a scientometric study about the drinking water treatments in the period 2010-2020 for providing the state of art of the studies about the drinking water treatments in diverse knowledge areas and new orientations for future research. For this purpose, a search of the information was performed both in the Web of Science (WoS) and Scopus databases, and all articles and reviews related to the field of water treatment or chemistry were included. The results showed that China, the USA and the Netherlands have the majority of the most cited publications and various related multidisciplinary topics, such as infrastructure, technologies and pollution. Therefore, the study allows concluding that there is a need for research on different technologies that contribute positively to obtaining quality water for consumption and for the use of routine activities, being the combination and integration of the different treatment processes a challenge for future studies.

show abstract

A new perspective of membrane fouling control by ultraviolet synergic ferrous iron catalytic persulfate (UV/Fe(II)/PS) as pretreatment prior to ultrafiltration

Cited by 41 publications

References 59 publications

Degradation of ciprofloxacin by persulfate activated with pyrite: mechanism, acidification and tailwater reuse

Degradation of ciprofloxacin by persulfate activated with pyrite: mechanism, acidification and tailwater reuse

Polyvinylidene Fluoride/Nanoclays (Cloisite 30B and Palygorskite) Mixed Matrix Membranes with Improved Performance and Antifouling Properties

Scientometric study of drinking water treatments technologies: Present and future challenges

Contact Info

Product

Resources

About