4.8 Article

Novel sodium percarbonate-MnO2 effervescent tablets for efficient and moderate membrane cleaning

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Environmental Sciences

Coagulation combined with ultraviolet irradiation activated sodium percarbonate as pretreatment prior to ultrafiltration: Analysis of free radical oxidation mechanism and membrane fouling control

Xinqiang Chang et al.

Summary: The Fe(III)-UV/SPC process, which combines pre-coagulation-sedimentation with ultraviolet activated sodium percarbonate, shows improved removal rates of organic compounds and reduced UF membrane fouling, leading to enhanced safety of rural drinking water. This process allows for a lower dosage of SPC, effectively disrupts the cake layer structure on the UF membrane, reduces contaminant concentration, and alleviates membrane fouling.

CHEMOSPHERE (2022)

Article Engineering, Environmental

In-situ utilization of membrane foulants (FeOx+MnOx) for the efficient membrane cleaning

Boda Li et al.

Summary: Preoxidation-ultrafiltration process is an effective method for removing Fe2+ and Mn(2+), but the presence of Fe2+, Mn2+, and organics in the feed can cause severe membrane fouling. This study proposes a novel FeOx+MnOx+H2O2 membrane cleaning method which achieves high membrane flux recovery and removal of membrane foulants within a short time. The outstanding performance of the system is mainly attributed to the catalytic decomposition of H2O2 to generate highly reactive radicals and abundant oxygen.

WATER RESEARCH (2022)

Article Engineering, Chemical

Dual-objective for the mechanism of membrane fouling in the early stage of filtration and determination of cleaning frequency: A novel combined model

Wei Yao et al.

Summary: In this study, a novel model was established to predict the variation of transmembrane pressure in constant flux mode. The model showed high accuracy and provided guidance for determining cleaning frequency.

JOURNAL OF MEMBRANE SCIENCE (2022)

Article Engineering, Environmental

Enhanced-oxidation of sulfanilamide in groundwater using combination of calcium peroxide and pyrite

Jong-Gook Kim et al.

Summary: A novel oxidation system combining calcium peroxide and pyrite was proposed for the degradation of oxidizable contaminants in groundwater. This system showed higher efficiency in degrading sulfanilamide compared to conventional Fenton reaction, indicating its effectiveness in groundwater remediation.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Engineering, Chemical

Impacts on characteristics and effluent safety of PVDF ultrafiltration membranes aged by different chemical cleaning types

Xinyan Gan et al.

Summary: The study revealed that chemical cleaning can damage the structure of ultrafiltration membranes, leading to aging and decreased performance, while also increasing the release of PVDF microplastics. Additionally, it was suggested that sodium hydroxide may be more beneficial for the stability of ultrafiltration membranes.

JOURNAL OF MEMBRANE SCIENCE (2021)

Article Engineering, Chemical

Inhibition of algae-induced membrane fouling by in-situ formed hydrophilic micropillars on ultrafiltration membrane surface

Haicheng Jiang et al.

Summary: In this study, a novel PVDF ultrafiltration membrane was developed by forming micro pillars of FAS-PS-b-PEGMA on the membrane surface to inhibit algae fouling. The modified membranes showed improved permeability and antifouling properties, with stable permeation flux and lower flux decline ratio compared to control membranes. The micropillars were found to inhibit the accumulation of algae cells on the membrane surface, providing a promising strategy for algae-laden water treatment.

JOURNAL OF MEMBRANE SCIENCE (2021)

Article Environmental Sciences

Fe(II)-activated sodium percarbonate for improving sludge dewaterability: Experimental and theoretical investigation combined with the evaluation of subsequent utilization

Xiao Ling et al.

Summary: Fe(II)-activated sodium percarbonate (SPC) is an emerging technology for enhancing the dewaterability of waste activated sludge. Acidic conditions are beneficial for sludge dewatering, while overdosing Fe(II) or SPC can have adverse effects. The oxidation/flocculation process plays a key role in improving sludge dewaterability.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

Article Engineering, Chemical

Respective role of iron and manganese in direct ultrafiltration: from membrane fouling to flux improvements

Xiaobin Tang et al.

Summary: The innovative gravity-driven membrane (GDM) process effectively removes iron and manganese contamination from surface water, with the potential to significantly contribute to the treatment of iron- and manganese-containing water. The interaction between the bio-cake layer and ultrafiltration membrane plays a crucial role in flux improvement and removal efficiency.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

Article Engineering, Chemical

Tangential streaming potential, transmembrane flux, and chemical cleaning of ultrafiltration membranes

Elizabeth Arkhangelsky et al.

Summary: Transmembrane flux measurements and tangential pH-streaming potential profiling are used to evaluate the degree of organic fouling and efficiency of chemical cleaning of ultrafiltration membranes. When implemented in parallel, these methods assist in tuning efficient cleaning protocols, reducing costs, and suspending membrane ageing.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

Review Environmental Sciences

A review on percarbonate-based advanced oxidation processes for remediation of organic compounds in water

Xin Liu et al.

Summary: This article discusses the potential application of sodium percarbonate in water/soil remediation, highlighting its oxidative capacity and environmentally friendly features. It also explores the mechanisms and advantages of the P-AOPs system under different catalytic conditions.

ENVIRONMENTAL RESEARCH (2021)

Article Environmental Sciences

Aging of PVDF and PES ultrafiltration membranes by sodium hypochlorite: Effect of solution pH

Kai Li et al.

Summary: The study found that NaClO at different pH values will have different aging effects on PVDF and PES membranes, leading to increased permeability, decreased retention ability, and reduced mechanical strength of the membranes. The aging process is mainly due to the oxidation and release of polyvinyl pyrrolidone (PVP) as well as the chain scission of PVDF or PES molecules caused by NaClO.

JOURNAL OF ENVIRONMENTAL SCIENCES (2021)

Article Engineering, Environmental

Efficient degradation of sulfamethazine via activation of percarbonate by chalcopyrite

Yangju Li et al.

Summary: In this study, the novel application of chalcopyrite for sodium percarbonate activation towards sulfamethazine degradation was explored. The mechanism of SPC activation by CuFeS2 was elucidated to involve multiple reactive oxygen species processes, with hydroxyl radical playing a key role in SMT degradation.

WATER RESEARCH (2021)

Article Chemistry, Analytical

Rapid Extraction and Analysis of Volatile Solutes with an Effervescent Tablet

Decibel P. Elpa et al.

ANALYTICAL CHEMISTRY (2020)

Review Environmental Sciences

Rate constants of carbonate radical anion reactions with molecules of environmental interest in aqueous solution: A review

Laszlo Wojnarovits et al.

SCIENCE OF THE TOTAL ENVIRONMENT (2020)

Article Engineering, Environmental

Degradation of ethylbenzene in aqueous solution by sodium percarbonate activated with EDDS-Fe(III) complex

Hang Cui et al.

CHEMICAL ENGINEERING JOURNAL (2017)

Review Engineering, Chemical

Ageing of membranes for water treatment: Linking changes to performance

Shona Robinson et al.

JOURNAL OF MEMBRANE SCIENCE (2016)

Article Environmental Sciences

Monitoring changes in the structure and properties of humic substances following ozonation using UV-Vis, FTIR and 1H NMR techniques

Francisco J. Rodriguez et al.

SCIENCE OF THE TOTAL ENVIRONMENT (2016)

Article Engineering, Environmental

Assessing PAC contribution to the NOM fouling control in PAC/UF systems

Margarida Campinas et al.

WATER RESEARCH (2010)