Cargando…

Performance and properties of coking nanofiltration concentrate treatment and membrane fouling mitigation by an Fe(ii)/persulfate-coagulation-ultrafiltration process

Coking nanofiltration (NF) concentrates, as typical wastewater with high salinity and refractory organics, have become one of the greatest challenges for “near-zero emission” processes. In our study, an advanced oxidation technology based on ferrous iron/persulfate (Fe(ii)/PS) and polyferric sulfate...

Descripción completa

Detalles Bibliográficos
Autores principales: Yang, Ming, Chen, Jiabin, Peng, Boyu, Yu, Zhenjiang, Chu, Huaqiang, Zhou, Xuefei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064204/
https://www.ncbi.nlm.nih.gov/pubmed/35514804
http://dx.doi.org/10.1039/c8ra10094b
_version_ 1784699319595565056
author Yang, Ming
Chen, Jiabin
Peng, Boyu
Yu, Zhenjiang
Chu, Huaqiang
Zhou, Xuefei
author_facet Yang, Ming
Chen, Jiabin
Peng, Boyu
Yu, Zhenjiang
Chu, Huaqiang
Zhou, Xuefei
author_sort Yang, Ming
collection PubMed
description Coking nanofiltration (NF) concentrates, as typical wastewater with high salinity and refractory organics, have become one of the greatest challenges for “near-zero emission” processes. In our study, an advanced oxidation technology based on ferrous iron/persulfate (Fe(ii)/PS) and polyferric sulfate (PFS) coagulation coupled with ultrafiltration (UF) was used to treat NF concentrates and mitigate membrane fouling. Based on batch experiments, the optimal parameters of Fe(ii)/PS were obtained, during which we discovered that the slow reaction stage of total organic carbon (TOC) removal followed first-order degradation kinetics. Under the optimal reaction conditions, Fe(ii)/PS could efficiently mineralize 69% of organics in coking NF concentrates. In order to eliminate the iron floc generated in the Fe(ii)/PS step, a small amount of PFS (0.05 mM) was added to coagulate the iron floc, which could further improve the effluent quality so that the turbidity, iron content and TOC were significantly reduced by 79.18%, 98% and 21.79% respectively. Gas chromatography coupled with time-of-flight mass spectrometry (GC × GC-TOFMS) and fluorescence excitation-emission matrix spectrometry (EEM) were performed to characterize the removal of phenols, PAHs, quinolines and humic acids in NF concentrates which were responsible for UF membrane fouling. Moreover, scanning electronic microscopy (SEM) and atomic force microscopy (AFM) were conducted to study the surface of the UF membrane after treatment of NF concentrates. The result exhibited that the organic pollutants deposited on the UF membrane surface were reduced by Fe(ii)/PS-PFS pretreatment, and UF membrane flux was thus enhanced. Our results show the potential of the approach of applying Fe(ii)/PS-PFS-UF in NF concentrate treatment.
format Online
Article
Text
id pubmed-9064204
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher The Royal Society of Chemistry
record_format MEDLINE/PubMed
spelling pubmed-90642042022-05-04 Performance and properties of coking nanofiltration concentrate treatment and membrane fouling mitigation by an Fe(ii)/persulfate-coagulation-ultrafiltration process Yang, Ming Chen, Jiabin Peng, Boyu Yu, Zhenjiang Chu, Huaqiang Zhou, Xuefei RSC Adv Chemistry Coking nanofiltration (NF) concentrates, as typical wastewater with high salinity and refractory organics, have become one of the greatest challenges for “near-zero emission” processes. In our study, an advanced oxidation technology based on ferrous iron/persulfate (Fe(ii)/PS) and polyferric sulfate (PFS) coagulation coupled with ultrafiltration (UF) was used to treat NF concentrates and mitigate membrane fouling. Based on batch experiments, the optimal parameters of Fe(ii)/PS were obtained, during which we discovered that the slow reaction stage of total organic carbon (TOC) removal followed first-order degradation kinetics. Under the optimal reaction conditions, Fe(ii)/PS could efficiently mineralize 69% of organics in coking NF concentrates. In order to eliminate the iron floc generated in the Fe(ii)/PS step, a small amount of PFS (0.05 mM) was added to coagulate the iron floc, which could further improve the effluent quality so that the turbidity, iron content and TOC were significantly reduced by 79.18%, 98% and 21.79% respectively. Gas chromatography coupled with time-of-flight mass spectrometry (GC × GC-TOFMS) and fluorescence excitation-emission matrix spectrometry (EEM) were performed to characterize the removal of phenols, PAHs, quinolines and humic acids in NF concentrates which were responsible for UF membrane fouling. Moreover, scanning electronic microscopy (SEM) and atomic force microscopy (AFM) were conducted to study the surface of the UF membrane after treatment of NF concentrates. The result exhibited that the organic pollutants deposited on the UF membrane surface were reduced by Fe(ii)/PS-PFS pretreatment, and UF membrane flux was thus enhanced. Our results show the potential of the approach of applying Fe(ii)/PS-PFS-UF in NF concentrate treatment. The Royal Society of Chemistry 2019-05-15 /pmc/articles/PMC9064204/ /pubmed/35514804 http://dx.doi.org/10.1039/c8ra10094b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Yang, Ming
Chen, Jiabin
Peng, Boyu
Yu, Zhenjiang
Chu, Huaqiang
Zhou, Xuefei
Performance and properties of coking nanofiltration concentrate treatment and membrane fouling mitigation by an Fe(ii)/persulfate-coagulation-ultrafiltration process
title Performance and properties of coking nanofiltration concentrate treatment and membrane fouling mitigation by an Fe(ii)/persulfate-coagulation-ultrafiltration process
title_full Performance and properties of coking nanofiltration concentrate treatment and membrane fouling mitigation by an Fe(ii)/persulfate-coagulation-ultrafiltration process
title_fullStr Performance and properties of coking nanofiltration concentrate treatment and membrane fouling mitigation by an Fe(ii)/persulfate-coagulation-ultrafiltration process
title_full_unstemmed Performance and properties of coking nanofiltration concentrate treatment and membrane fouling mitigation by an Fe(ii)/persulfate-coagulation-ultrafiltration process
title_short Performance and properties of coking nanofiltration concentrate treatment and membrane fouling mitigation by an Fe(ii)/persulfate-coagulation-ultrafiltration process
title_sort performance and properties of coking nanofiltration concentrate treatment and membrane fouling mitigation by an fe(ii)/persulfate-coagulation-ultrafiltration process
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064204/
https://www.ncbi.nlm.nih.gov/pubmed/35514804
http://dx.doi.org/10.1039/c8ra10094b
work_keys_str_mv AT yangming performanceandpropertiesofcokingnanofiltrationconcentratetreatmentandmembranefoulingmitigationbyanfeiipersulfatecoagulationultrafiltrationprocess
AT chenjiabin performanceandpropertiesofcokingnanofiltrationconcentratetreatmentandmembranefoulingmitigationbyanfeiipersulfatecoagulationultrafiltrationprocess
AT pengboyu performanceandpropertiesofcokingnanofiltrationconcentratetreatmentandmembranefoulingmitigationbyanfeiipersulfatecoagulationultrafiltrationprocess
AT yuzhenjiang performanceandpropertiesofcokingnanofiltrationconcentratetreatmentandmembranefoulingmitigationbyanfeiipersulfatecoagulationultrafiltrationprocess
AT chuhuaqiang performanceandpropertiesofcokingnanofiltrationconcentratetreatmentandmembranefoulingmitigationbyanfeiipersulfatecoagulationultrafiltrationprocess
AT zhouxuefei performanceandpropertiesofcokingnanofiltrationconcentratetreatmentandmembranefoulingmitigationbyanfeiipersulfatecoagulationultrafiltrationprocess