Potential for colloid removal from petrochemical secondary effluent by coagulation–flocculation coupled with persulfate process

Li, Min; Zhao, Meng; Liu, Lujie; Zhou, Yuexi; Yu, Yin; Wu, Changyong

doi:10.1039/d1ew00659b

Cited by 3 publications

(2 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When PS is used alone, the removal rates of 3–50 kDa and DOC lower than 3 kDa are 62.7% and 40.3%, respectively. CF pretreatment enhances the removal of medium- and high-molecular-weight lysine and tryptophan, and PS can remove humic organics and extracellular polymers more thoroughly [ 43 ]. Zhou et al reported a new strategy of using Ag/TiO 2 /GO as AOP catalysts and PVDF for synergistic removal, efficiently inactivating low-concentration ARGs in target wastewater through interfacial adsorption and oxidation degradation [ 133 ].…”

Section: Contribution Of Pretreatment Scheme For Ep Removalmentioning

confidence: 99%

“…Multi-unit filtration is considered to be one of the strategies that is able to effectively improve the membrane separation effect [ 39 , 40 , 41 , 42 ]. The corresponding screening effect of different size ranges on molecular weight can also be used to calculate the molecular weight distribution of organic substances [ 43 , 44 ]. The removal effect of ARGs mainly depends on the pore size of the membrane [ 45 ], and compared with spiral and round DNA molecules, linear molecules with similar molecular weight often have more appropriate escape ability [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Zhang

Yuan

et al. 2023

Membranes

View full text Add to dashboard Cite

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.

show abstract

Section: Contribution Of Pretreatment Scheme For Ep Removalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Zhang

Yuan

et al. 2023

Membranes

View full text Add to dashboard Cite

show abstract

A Comprehensive Review on the Excitation-Emission Matrix Fluorescence Spectroscopic Characterization of Petroleum-Containing Substances: Principles, Methods, and Applications

Geng

Yan

Yin

et al. 2023

Critical Reviews in Analytical Chemistry

View full text Add to dashboard Cite

Sulfate Decelerated Ferrous Ion-Activated Persulfate Oxidation of Azo Dye Reactive Brilliant Red: Influence Factors, Mechanisms, and Control Methods

et al. 2022

View full text Add to dashboard Cite

This study investigated the inhibition effects of sulfate on ferrous ion-activated persulfate oxidation of azo dye reactive brilliant red X-3B. The experimental results showed that the degradation efficiency of reactive brilliant red X-3B decreased from 100% to 63% in 60 min when the initial concentration of sulfate increased from 0 to 3 g/L. The ferrous/persulfate molar ratio had remarkable influence on persulfate oxidation capability in presence of sulfate. SO42− could coordinate with Fe2+ and Fe3+ in generating FeSO4 ion pairs as well as FeSO4+ or Fe(SO4)2− complexes, which were difficult to activate persulfate and reduced the regeneration of Fe2+. Radicals quenching and electron paramagnetic resonance experiments showed that ·OH and SO4·− were responsible for the oxidation of reactive brilliant red X-3B; however, the addition of sulfate significantly inhibited the generation of SO4·−, and then the generation of ·OH. Moreover, the corresponding Nernst equation indicated that high concentration of sulfate reduced the oxidation potential of SO4·−/SO42−. Experimental results proved that the adverse effects of sulfate on the persulfate oxidation could be counteracted either by batch addition of ferrous or by adding Ba2+ to remove SO42− in the system.

show abstract

Potential for colloid removal from petrochemical secondary effluent by coagulation–flocculation coupled with persulfate process

Abstract: The selective removal characterization of colloids in petrochemical secondary effluent treated by coagulation-flocculation (CF) coupled with persulfate (PS) process was investigated. Results showed that the optimal dosages for CF-PS were...

Cited by 3 publications

References 54 publications

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

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

A Comprehensive Review on the Excitation-Emission Matrix Fluorescence Spectroscopic Characterization of Petroleum-Containing Substances: Principles, Methods, and Applications

Sulfate Decelerated Ferrous Ion-Activated Persulfate Oxidation of Azo Dye Reactive Brilliant Red: Influence Factors, Mechanisms, and Control Methods

Contact Info

Product

Resources

About