Coagulation performance and floc characteristics of polytitanium tetrachloride (PTC) compared with titanium tetrachloride (TiCl4) and ferric chloride (FeCl3) in algal turbid water

Handle URI:
http://hdl.handle.net/10754/622281
Title:
Coagulation performance and floc characteristics of polytitanium tetrachloride (PTC) compared with titanium tetrachloride (TiCl4) and ferric chloride (FeCl3) in algal turbid water
Authors:
Chekli, L.; Eripret, C.; Park, S.H.; Tabatabai, S. Assiyeh Alizadeh ( 0000-0002-4997-3861 ) ; Vronska, O.; Tamburic, B.; Kim, J.H.; Shon, H.K.
Abstract:
Seasonal green algae blooms in freshwaters have raised attention on the need to develop novel effective treatment processes for the removal of algae in water. In the present study, the performance of newly developed polytitanium tetrachloride (PTC) coagulant for the removal of freshwater microalga Chlorella vulgaris has been investigated and compared with titanium tetrachloride (TiCl4) coagulant and the conventional ferric chloride (FeCl3) coagulant. The main benefit of using titanium-based coagulants is that the sludge produced after flocculation may be recycled into a valuable product: titanium dioxide photocatalyst. Both titanium-based coagulants achieved good flocculation over a broader pH range and coagulant dose compared to conventional FeCl3 coagulant. All three coagulants achieved comparable performance in terms of turbidity removal (i.e. turbidity removal efficiency >97%); although TiCl4 performed slightly better at the lower tested dose (i.e. <9 mg/L). Zeta potential measurements indicated that charge neutralisation may not be the sole mechanism involved in the coagulation of algae for all three coagulants. Analysis of the dynamic floc size variation during floc breakage showed no regrowth after floc breakage for the three coagulants. The flocs formed by both Ti-based coagulants were larger than those formed by FeCl3 and also grew at a faster rate. This study indicates that Ti-based coagulants are effective and promising coagulants for algae removal in water.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC)
Citation:
Chekli L, Eripret C, Park SH, Tabatabai SAA, Vronska O, et al. (2017) Coagulation performance and floc characteristics of polytitanium tetrachloride (PTC) compared with titanium tetrachloride (TiCl4) and ferric chloride (FeCl3) in algal turbid water. Separation and Purification Technology 175: 99–106. Available: http://dx.doi.org/10.1016/j.seppur.2016.11.019.
Publisher:
Elsevier BV
Journal:
Separation and Purification Technology
Issue Date:
11-Nov-2016
DOI:
10.1016/j.seppur.2016.11.019
Type:
Article
ISSN:
1383-5866
Sponsors:
This work was supported by the SMEs Partnership Project for strengthening tech-competitiveness funded by Korea Small and Medium Business Administration in 2016 (Grant n° S2317919).
Additional Links:
http://www.sciencedirect.com/science/article/pii/S1383586616307304
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorChekli, L.en
dc.contributor.authorEripret, C.en
dc.contributor.authorPark, S.H.en
dc.contributor.authorTabatabai, S. Assiyeh Alizadehen
dc.contributor.authorVronska, O.en
dc.contributor.authorTamburic, B.en
dc.contributor.authorKim, J.H.en
dc.contributor.authorShon, H.K.en
dc.date.accessioned2017-01-02T09:08:23Z-
dc.date.available2017-01-02T09:08:23Z-
dc.date.issued2016-11-11en
dc.identifier.citationChekli L, Eripret C, Park SH, Tabatabai SAA, Vronska O, et al. (2017) Coagulation performance and floc characteristics of polytitanium tetrachloride (PTC) compared with titanium tetrachloride (TiCl4) and ferric chloride (FeCl3) in algal turbid water. Separation and Purification Technology 175: 99–106. Available: http://dx.doi.org/10.1016/j.seppur.2016.11.019.en
dc.identifier.issn1383-5866en
dc.identifier.doi10.1016/j.seppur.2016.11.019en
dc.identifier.urihttp://hdl.handle.net/10754/622281-
dc.description.abstractSeasonal green algae blooms in freshwaters have raised attention on the need to develop novel effective treatment processes for the removal of algae in water. In the present study, the performance of newly developed polytitanium tetrachloride (PTC) coagulant for the removal of freshwater microalga Chlorella vulgaris has been investigated and compared with titanium tetrachloride (TiCl4) coagulant and the conventional ferric chloride (FeCl3) coagulant. The main benefit of using titanium-based coagulants is that the sludge produced after flocculation may be recycled into a valuable product: titanium dioxide photocatalyst. Both titanium-based coagulants achieved good flocculation over a broader pH range and coagulant dose compared to conventional FeCl3 coagulant. All three coagulants achieved comparable performance in terms of turbidity removal (i.e. turbidity removal efficiency >97%); although TiCl4 performed slightly better at the lower tested dose (i.e. <9 mg/L). Zeta potential measurements indicated that charge neutralisation may not be the sole mechanism involved in the coagulation of algae for all three coagulants. Analysis of the dynamic floc size variation during floc breakage showed no regrowth after floc breakage for the three coagulants. The flocs formed by both Ti-based coagulants were larger than those formed by FeCl3 and also grew at a faster rate. This study indicates that Ti-based coagulants are effective and promising coagulants for algae removal in water.en
dc.description.sponsorshipThis work was supported by the SMEs Partnership Project for strengthening tech-competitiveness funded by Korea Small and Medium Business Administration in 2016 (Grant n° S2317919).en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S1383586616307304en
dc.subjectCoagulationen
dc.subjectAlgaeen
dc.subjectPolytitanium tetrachlorideen
dc.subjectTitanium tetrachlorideen
dc.subjectFloc sizeen
dc.subjectFloc strengthen
dc.titleCoagulation performance and floc characteristics of polytitanium tetrachloride (PTC) compared with titanium tetrachloride (TiCl4) and ferric chloride (FeCl3) in algal turbid wateren
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalSeparation and Purification Technologyen
dc.contributor.institutionSchool of Civil and Environmental Engineering, University of Technology, Sydney, Post Box 129, Broadway, NSW 2007, Australiaen
dc.contributor.institutionKorea Institute of Industrial Technology (KIITECH), 89 Yangdaegiro-gil, Ipjang-myeon, Seobuk-gu, Cheonan-si, Chungcheongnam-do 331-822, Republic of Koreaen
dc.contributor.institutionPlant Functional Biology and Climate Change Cluster (C3), Faculty of Science, University of Technology Sydney (UTS), Sydney, NSW 2007, Australiaen
dc.contributor.institutionSchool of Applied Chemical Engineering and the Institute for Catalysis Research, Chonnam National University, Gwangju 500-757, Republic of Koreaen
kaust.authorTabatabai, S. Assiyeh Alizadehen
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