Removal of TiO2 nanoparticles from water by coagulation

Nan Xu; Wenquan Sun; Yongjun Sun; Mengdan Tang; Genchao Ma

doi:10.11835/j.issn.1674-4764.2017.04.014

Removal of TiO₂ nanoparticles from water by coagulation

Nan Xu, Wenquan Sun, Yongjun Sun, Mengdan Tang, Genchao Ma

College of Urban Construction

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

Abstract

In order to investigate the feasibility of removing the nanoparticles(NPs) from water by coagulation, the effects of inorganic coagulants (PAC, PFS, PAFC) and organic flocculants (CPAM, APAM, NPAM) on the removal efficiency of TiO₂ NPs were evaluated. The effects of dosage, pH, sedimentation time, hydraulic conditions and compound flocculants were also investigated. The highest removal rates of PAC, PFS and PAFC were 92.51%, 84.43% and 95.66% while the removal rates of CPAM, APAM and NPAM were only 61.72%, 29.06% and 55.37% respectively. The optimum coagulation dosage were 40 mg/L PAC and 3 mg/L CPAM, while the pH was 9, G value was 143.5/s and the sedimentation time was 15min, and the corresponding removal efficiency of TiO₂ NPs was 99.6%.

Original language	English
Pages (from-to)	89-94
Number of pages	6
Journal	Tumu Jianzhu yu Huanjing Gongcheng/Journal of Civil, Architectural and Environmental Engineering
Volume	39
Issue number	4
DOIs	https://doi.org/10.11835/j.issn.1674-4764.2017.04.014
State	Published - 1 Aug 2017

Keywords

Coagulant
Coagulation
Flocculants
Nanoparticles
Sedimentation time

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10.11835/j.issn.1674-4764.2017.04.014

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title = "Removal of TiO2 nanoparticles from water by coagulation",

abstract = "In order to investigate the feasibility of removing the nanoparticles(NPs) from water by coagulation, the effects of inorganic coagulants (PAC, PFS, PAFC) and organic flocculants (CPAM, APAM, NPAM) on the removal efficiency of TiO2 NPs were evaluated. The effects of dosage, pH, sedimentation time, hydraulic conditions and compound flocculants were also investigated. The highest removal rates of PAC, PFS and PAFC were 92.51%, 84.43% and 95.66% while the removal rates of CPAM, APAM and NPAM were only 61.72%, 29.06% and 55.37% respectively. The optimum coagulation dosage were 40 mg/L PAC and 3 mg/L CPAM, while the pH was 9, G value was 143.5/s and the sedimentation time was 15min, and the corresponding removal efficiency of TiO2 NPs was 99.6%.",

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author = "Nan Xu and Wenquan Sun and Yongjun Sun and Mengdan Tang and Genchao Ma",

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AU - Xu, Nan

AU - Sun, Wenquan

AU - Sun, Yongjun

AU - Tang, Mengdan

AU - Ma, Genchao

PY - 2017/8/1

Y1 - 2017/8/1

N2 - In order to investigate the feasibility of removing the nanoparticles(NPs) from water by coagulation, the effects of inorganic coagulants (PAC, PFS, PAFC) and organic flocculants (CPAM, APAM, NPAM) on the removal efficiency of TiO2 NPs were evaluated. The effects of dosage, pH, sedimentation time, hydraulic conditions and compound flocculants were also investigated. The highest removal rates of PAC, PFS and PAFC were 92.51%, 84.43% and 95.66% while the removal rates of CPAM, APAM and NPAM were only 61.72%, 29.06% and 55.37% respectively. The optimum coagulation dosage were 40 mg/L PAC and 3 mg/L CPAM, while the pH was 9, G value was 143.5/s and the sedimentation time was 15min, and the corresponding removal efficiency of TiO2 NPs was 99.6%.

AB - In order to investigate the feasibility of removing the nanoparticles(NPs) from water by coagulation, the effects of inorganic coagulants (PAC, PFS, PAFC) and organic flocculants (CPAM, APAM, NPAM) on the removal efficiency of TiO2 NPs were evaluated. The effects of dosage, pH, sedimentation time, hydraulic conditions and compound flocculants were also investigated. The highest removal rates of PAC, PFS and PAFC were 92.51%, 84.43% and 95.66% while the removal rates of CPAM, APAM and NPAM were only 61.72%, 29.06% and 55.37% respectively. The optimum coagulation dosage were 40 mg/L PAC and 3 mg/L CPAM, while the pH was 9, G value was 143.5/s and the sedimentation time was 15min, and the corresponding removal efficiency of TiO2 NPs was 99.6%.

KW - Coagulant

KW - Coagulation

KW - Flocculants

KW - Nanoparticles

KW - Sedimentation time

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IS - 4

ER -

Removal of TiO₂ nanoparticles from water by coagulation

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Keywords

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