Applications of biological flocculants (BFs) for coagulation treatment in water purification: Turbidity elimination

F. Ma; L. N. Zheng; Y. Chi

Applications of biological flocculants (BFs) for coagulation treatment in water purification: Turbidity elimination

F. Ma^*
, L. N. Zheng
, Y. Chi

^*Corresponding author for this work

School of Environment

Harbin Institute of Technology

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

28 Scopus citations

Abstract

In this study, coagulation performance by using biological flocculants (BFs; produced from strain Bacillus sp. F6) for turbidity removal was investigated. The results demonstrated that BFs were able to eliminate turbidity from kaolin clay solution over a wide dosage range (γ_DR= 6-20 mg L^-1). The removal efficiency with BFs reached 86% on average, lower than 95 % with Al₂(SO₄)₃ (γ_Al = 6.5 mg L^-1) and 96% with Fe ₂(SO₄)₃ (γ_Fe = 10 mg L ^-1). respectively. For bioflocculants, bridging flocculation other than charge neutralization should be responsible for turbidity removal. The combined applications of BFs with Al₂(SO₄)₃ (ζ_Al/BF = 0.33) and Fe₂(SO₄)₃ (ζ_Fe/BF = 0.05) increased over-all turbidity removal up to 97%. It was also shown that combination of BFs and Fe₂(SO ₄)₃ was effective for removing turbidity from raw water. This study provides a proof-in-concept demonstration of BFs for water purification, which can in part reduce operational costs in coagulation treatment, as well, effectively reduce the concentration of residual metallic elements (e.g. aluminum) in coagulated solution.

Original language	English
Pages (from-to)	321-326
Number of pages	6
Journal	Chemical and Biochemical Engineering Quarterly
Volume	22
Issue number	3
State	Published - Sep 2008

Keywords

Bioflocculants (BFs)
Bridging flocculation
Charge neutralization
Coagulation
Turbidity removal

Cite this

@article{16dd6eea2f8d49f981d8373e92226e27,

title = "Applications of biological flocculants (BFs) for coagulation treatment in water purification: Turbidity elimination",

abstract = "In this study, coagulation performance by using biological flocculants (BFs; produced from strain Bacillus sp. F6) for turbidity removal was investigated. The results demonstrated that BFs were able to eliminate turbidity from kaolin clay solution over a wide dosage range (γDR= 6-20 mg L-1). The removal efficiency with BFs reached 86\% on average, lower than 95 \% with Al2(SO4)3 (γAl = 6.5 mg L-1) and 96\% with Fe 2(SO4)3 (γFe = 10 mg L -1). respectively. For bioflocculants, bridging flocculation other than charge neutralization should be responsible for turbidity removal. The combined applications of BFs with Al2(SO4)3 (ζAl/BF = 0.33) and Fe2(SO4)3 (ζFe/BF = 0.05) increased over-all turbidity removal up to 97\%. It was also shown that combination of BFs and Fe2(SO 4)3 was effective for removing turbidity from raw water. This study provides a proof-in-concept demonstration of BFs for water purification, which can in part reduce operational costs in coagulation treatment, as well, effectively reduce the concentration of residual metallic elements (e.g. aluminum) in coagulated solution.",

keywords = "Bioflocculants (BFs), Bridging flocculation, Charge neutralization, Coagulation, Turbidity removal",

author = "F. Ma and Zheng, \{L. N.\} and Y. Chi",

year = "2008",

month = sep,

language = "英语",

volume = "22",

pages = "321--326",

journal = "Chemical and Biochemical Engineering Quarterly",

issn = "0352-9568",

publisher = "Assoc. of Chemists and Chemical Engineers of Croatia",

number = "3",

}

TY - JOUR

T1 - Applications of biological flocculants (BFs) for coagulation treatment in water purification

T2 - Turbidity elimination

AU - Ma, F.

AU - Zheng, L. N.

AU - Chi, Y.

PY - 2008/9

Y1 - 2008/9

N2 - In this study, coagulation performance by using biological flocculants (BFs; produced from strain Bacillus sp. F6) for turbidity removal was investigated. The results demonstrated that BFs were able to eliminate turbidity from kaolin clay solution over a wide dosage range (γDR= 6-20 mg L-1). The removal efficiency with BFs reached 86% on average, lower than 95 % with Al2(SO4)3 (γAl = 6.5 mg L-1) and 96% with Fe 2(SO4)3 (γFe = 10 mg L -1). respectively. For bioflocculants, bridging flocculation other than charge neutralization should be responsible for turbidity removal. The combined applications of BFs with Al2(SO4)3 (ζAl/BF = 0.33) and Fe2(SO4)3 (ζFe/BF = 0.05) increased over-all turbidity removal up to 97%. It was also shown that combination of BFs and Fe2(SO 4)3 was effective for removing turbidity from raw water. This study provides a proof-in-concept demonstration of BFs for water purification, which can in part reduce operational costs in coagulation treatment, as well, effectively reduce the concentration of residual metallic elements (e.g. aluminum) in coagulated solution.

AB - In this study, coagulation performance by using biological flocculants (BFs; produced from strain Bacillus sp. F6) for turbidity removal was investigated. The results demonstrated that BFs were able to eliminate turbidity from kaolin clay solution over a wide dosage range (γDR= 6-20 mg L-1). The removal efficiency with BFs reached 86% on average, lower than 95 % with Al2(SO4)3 (γAl = 6.5 mg L-1) and 96% with Fe 2(SO4)3 (γFe = 10 mg L -1). respectively. For bioflocculants, bridging flocculation other than charge neutralization should be responsible for turbidity removal. The combined applications of BFs with Al2(SO4)3 (ζAl/BF = 0.33) and Fe2(SO4)3 (ζFe/BF = 0.05) increased over-all turbidity removal up to 97%. It was also shown that combination of BFs and Fe2(SO 4)3 was effective for removing turbidity from raw water. This study provides a proof-in-concept demonstration of BFs for water purification, which can in part reduce operational costs in coagulation treatment, as well, effectively reduce the concentration of residual metallic elements (e.g. aluminum) in coagulated solution.

KW - Bioflocculants (BFs)

KW - Bridging flocculation

KW - Charge neutralization

KW - Coagulation

KW - Turbidity removal

UR - https://www.scopus.com/pages/publications/53349156305

M3 - 文章

AN - SCOPUS:53349156305

SN - 0352-9568

VL - 22

SP - 321

EP - 326

JO - Chemical and Biochemical Engineering Quarterly

JF - Chemical and Biochemical Engineering Quarterly

IS - 3

ER -

Applications of biological flocculants (BFs) for coagulation treatment in water purification: Turbidity elimination

Abstract

Keywords

Other files and links

Fingerprint

Cite this