PMID- 32887244 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201023 IS - 2077-0375 (Print) IS - 2077-0375 (Electronic) IS - 2077-0375 (Linking) VI - 10 IP - 9 DP - 2020 Sep 2 TI - Micellar-Enhanced Ultrafiltration Using a Plant-Derived Surfactant for Dye Separation in Wastewater Treatment. LID - 10.3390/membranes10090220 [doi] LID - 220 AB - Micellar-enhanced ultrafiltration (MEUF) is one of several membrane methods used for the removal of trace organic pollutants from aqueous streams. In this process, a surfactant is added to a polluted aqueous solution at a concentration higher than its critical micelle concentration (CMC). Unlike synthetic surfactants, natural surfactants, from plants such as the saponin, while ecologically adaptable as surfactants in MEUF systems, are also biodegradable, renewable, and environmentally safe. This study applied Sapindus rarak extract as the natural surfactant in MEUF for Remazol dye separation. It was found that the presence of Sapindus rarak extract increased separation of Remazol red and blue dyes by up to 97.02% and 99.42%, respectively. However, the addition of surfactant decreased permeate fluxes due to membrane fouling and concentration polarization. In addition, loading micelle (Lm), representing the performance of the surfactant micelle for dye separation, as well as the blocking mechanism, was investigated. Lm was found to be in the range of 0.002-0.068 mM dyes/mM saponin. Ultrafiltration blocking mechanisms, as confirmed by the Hermia model, were: standard blocking, for cases without the addition of surfactant; cake formation, for cases with surfactant below the CMC; and complete blocking, for cases with surfactant above the CMC. FAU - Aryanti, Nita AU - Aryanti N AD - Department of Chemical Engineering, Diponegoro University, Semarang 50275, Indonesia. AD - Membrane Research Centre (MeR-C), Diponegoro University, Semarang 50275, Indonesia. FAU - Nafiunisa, Aininu AU - Nafiunisa A AD - Department of Chemical Engineering, Diponegoro University, Semarang 50275, Indonesia. FAU - Kusworo, Tutuk Djoko AU - Kusworo TD AD - Department of Chemical Engineering, Diponegoro University, Semarang 50275, Indonesia. AD - Membrane Research Centre (MeR-C), Diponegoro University, Semarang 50275, Indonesia. FAU - Wardhani, Dyah Hesti AU - Wardhani DH AD - Department of Chemical Engineering, Diponegoro University, Semarang 50275, Indonesia. LA - eng GR - Contract No. 257-32/UN7.P4.3/PP/2019/Ministry of Research,Technology and Higher Education, Republic of Indonesia/ PT - Journal Article DEP - 20200902 PL - Switzerland TA - Membranes (Basel) JT - Membranes JID - 101577807 PMC - PMC7557959 OTO - NOTNLM OT - blocking mechanism OT - dye solubilization OT - membrane filtration OT - saponin COIS- The authors declare no conflict of interest. In addition, the funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results. EDAT- 2020/09/06 06:00 MHDA- 2020/09/06 06:01 PMCR- 2020/09/01 CRDT- 2020/09/05 01:03 PHST- 2020/07/21 00:00 [received] PHST- 2020/08/20 00:00 [revised] PHST- 2020/08/25 00:00 [accepted] PHST- 2020/09/05 01:03 [entrez] PHST- 2020/09/06 06:00 [pubmed] PHST- 2020/09/06 06:01 [medline] PHST- 2020/09/01 00:00 [pmc-release] AID - membranes10090220 [pii] AID - membranes-10-00220 [pii] AID - 10.3390/membranes10090220 [doi] PST - epublish SO - Membranes (Basel). 2020 Sep 2;10(9):220. doi: 10.3390/membranes10090220.