Coagulation performance and floc characteristics of aluminum sulfate with cationic polyamidine as coagulant aid for kaolin-humic acid treatment

Bo Guo; Huan Yu; Baoyu Gao; Hongyan Rong; Hongyu Dong; Defang Ma; Ruihua Li; Shuang Zhao

doi:10.1016/j.colsurfa.2015.06.017

Coagulation performance and floc characteristics of aluminum sulfate with cationic polyamidine as coagulant aid for kaolin-humic acid treatment

Bo Guo
, Huan Yu
, Baoyu Gao^*
, Hongyan Rong
, Hongyu Dong
, Defang Ma
, Ruihua Li
, Shuang Zhao

^*Corresponding author for this work

Shandong University

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

37 Scopus citations

Abstract

In this study, novel cationic polyamidine (Pa) was synthesized and used as coagulant aid with aluminum sulfate (AS) for kaolin-humic acid simulated water treatment. The effects of Pa on coagulation performance and floc properties were investigated. Results showed that Pa addition significantly enhanced the removal of turbidity, ultraviolet absorbance at 254nm wavelength (UV₂₅₄) and dissolved organic carbon (DOC). AS-Pa exhibited high coagulation efficiency at border pH range and increased floc size and growth rate significantly. Floc recovery ability was also improved, while floc fractal dimension was lower with Pa addition. This would be attributed to high cationic charge density and long chain of Pa, which could enhance the effect of charge neutralization and adsorption bridging.

Original language	English
Pages (from-to)	476-484
Number of pages	9
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	481
DOIs	https://doi.org/10.1016/j.colsurfa.2015.06.017
State	Published - 1 Sep 2015
Externally published	Yes

Keywords

Aluminum sulfate
Coagulation performance
Floc properties
Polyamidine

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10.1016/j.colsurfa.2015.06.017

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title = "Coagulation performance and floc characteristics of aluminum sulfate with cationic polyamidine as coagulant aid for kaolin-humic acid treatment",

abstract = "In this study, novel cationic polyamidine (Pa) was synthesized and used as coagulant aid with aluminum sulfate (AS) for kaolin-humic acid simulated water treatment. The effects of Pa on coagulation performance and floc properties were investigated. Results showed that Pa addition significantly enhanced the removal of turbidity, ultraviolet absorbance at 254nm wavelength (UV254) and dissolved organic carbon (DOC). AS-Pa exhibited high coagulation efficiency at border pH range and increased floc size and growth rate significantly. Floc recovery ability was also improved, while floc fractal dimension was lower with Pa addition. This would be attributed to high cationic charge density and long chain of Pa, which could enhance the effect of charge neutralization and adsorption bridging.",

keywords = "Aluminum sulfate, Coagulation performance, Floc properties, Polyamidine",

author = "Bo Guo and Huan Yu and Baoyu Gao and Hongyan Rong and Hongyu Dong and Defang Ma and Ruihua Li and Shuang Zhao",

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doi = "10.1016/j.colsurfa.2015.06.017",

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TY - JOUR

T1 - Coagulation performance and floc characteristics of aluminum sulfate with cationic polyamidine as coagulant aid for kaolin-humic acid treatment

AU - Guo, Bo

AU - Yu, Huan

AU - Gao, Baoyu

AU - Rong, Hongyan

AU - Dong, Hongyu

AU - Ma, Defang

AU - Li, Ruihua

AU - Zhao, Shuang

PY - 2015/9/1

Y1 - 2015/9/1

N2 - In this study, novel cationic polyamidine (Pa) was synthesized and used as coagulant aid with aluminum sulfate (AS) for kaolin-humic acid simulated water treatment. The effects of Pa on coagulation performance and floc properties were investigated. Results showed that Pa addition significantly enhanced the removal of turbidity, ultraviolet absorbance at 254nm wavelength (UV254) and dissolved organic carbon (DOC). AS-Pa exhibited high coagulation efficiency at border pH range and increased floc size and growth rate significantly. Floc recovery ability was also improved, while floc fractal dimension was lower with Pa addition. This would be attributed to high cationic charge density and long chain of Pa, which could enhance the effect of charge neutralization and adsorption bridging.

AB - In this study, novel cationic polyamidine (Pa) was synthesized and used as coagulant aid with aluminum sulfate (AS) for kaolin-humic acid simulated water treatment. The effects of Pa on coagulation performance and floc properties were investigated. Results showed that Pa addition significantly enhanced the removal of turbidity, ultraviolet absorbance at 254nm wavelength (UV254) and dissolved organic carbon (DOC). AS-Pa exhibited high coagulation efficiency at border pH range and increased floc size and growth rate significantly. Floc recovery ability was also improved, while floc fractal dimension was lower with Pa addition. This would be attributed to high cationic charge density and long chain of Pa, which could enhance the effect of charge neutralization and adsorption bridging.

KW - Aluminum sulfate

KW - Coagulation performance

KW - Floc properties

KW - Polyamidine

UR - https://www.scopus.com/pages/publications/84934910492

U2 - 10.1016/j.colsurfa.2015.06.017

DO - 10.1016/j.colsurfa.2015.06.017

M3 - 文章

AN - SCOPUS:84934910492

SN - 0927-7757

VL - 481

SP - 476

EP - 484

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

ER -

Coagulation performance and floc characteristics of aluminum sulfate with cationic polyamidine as coagulant aid for kaolin-humic acid treatment

Abstract

Keywords

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