Treatment of dairy wastewater using anaerobic and solar photocatalytic methods

J. Rajesh Banu; S. Anandan; S. Kaliappan; Ick Tae Yeom

doi:10.1016/j.solener.2008.02.015

Treatment of dairy wastewater using anaerobic and solar photocatalytic methods

J. Rajesh Banu, S. Anandan, S. Kaliappan, Ick Tae Yeom

Graduate School of Water Resources

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

102 Scopus citations

Abstract

The present study was aimed to treat the dairy wastewater by using anaerobic and solar photocatalytic oxidation methods. The anaerobic treatment was carried out in a laboratory scale hybrid upflow anaerobic sludge blanket reactor (HUASB) with a working volume of 5.9 L. It was operated at organic loading rate (OLR) varying from 8 to 20 kg COD/m³ day for a period of 110 days. The maximum loading rate of the anaerobic reactor was found to be 19.2 kg COD/m³ day and the corresponding chemical oxygen demand (COD) removal at this OLR was 84%. The anaerobically treated wastewater at an OLR of 19.2 kg COD/m³ day was subjected to secondary solar photocatalytic oxidation treatment. The optimum pH and catalyst loading for the solar photochemical oxidation was found to be 5 and 300 mg/L, respectively. The secondary solar photocatalytic oxidation using TiO₂ removed 62% of the COD from primary anaerobic treatment. Integration of anaerobic and solar photocatalytic treatment resulted in 95% removal of COD from the dairy wastewater. The findings suggest that anaerobic treatment followed by solar photo catalytic oxidation would be a promising alternative for the treatment of dairy wastewater.

Original language	English
Pages (from-to)	812-819
Number of pages	8
Journal	Solar Energy
Volume	82
Issue number	9
DOIs	https://doi.org/10.1016/j.solener.2008.02.015
State	Published - Sep 2008

Keywords

Anaerobic treatment
Dairy wastewater
HUASB
Solar photocatalytic treatment
TiO

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.solener.2008.02.015

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title = "Treatment of dairy wastewater using anaerobic and solar photocatalytic methods",

abstract = "The present study was aimed to treat the dairy wastewater by using anaerobic and solar photocatalytic oxidation methods. The anaerobic treatment was carried out in a laboratory scale hybrid upflow anaerobic sludge blanket reactor (HUASB) with a working volume of 5.9 L. It was operated at organic loading rate (OLR) varying from 8 to 20 kg COD/m3 day for a period of 110 days. The maximum loading rate of the anaerobic reactor was found to be 19.2 kg COD/m3 day and the corresponding chemical oxygen demand (COD) removal at this OLR was 84\%. The anaerobically treated wastewater at an OLR of 19.2 kg COD/m3 day was subjected to secondary solar photocatalytic oxidation treatment. The optimum pH and catalyst loading for the solar photochemical oxidation was found to be 5 and 300 mg/L, respectively. The secondary solar photocatalytic oxidation using TiO2 removed 62\% of the COD from primary anaerobic treatment. Integration of anaerobic and solar photocatalytic treatment resulted in 95\% removal of COD from the dairy wastewater. The findings suggest that anaerobic treatment followed by solar photo catalytic oxidation would be a promising alternative for the treatment of dairy wastewater.",

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author = "\{Rajesh Banu\}, J. and S. Anandan and S. Kaliappan and Yeom, \{Ick Tae\}",

year = "2008",

month = sep,

doi = "10.1016/j.solener.2008.02.015",

language = "English",

volume = "82",

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T1 - Treatment of dairy wastewater using anaerobic and solar photocatalytic methods

AU - Rajesh Banu, J.

AU - Anandan, S.

AU - Kaliappan, S.

AU - Yeom, Ick Tae

PY - 2008/9

Y1 - 2008/9

N2 - The present study was aimed to treat the dairy wastewater by using anaerobic and solar photocatalytic oxidation methods. The anaerobic treatment was carried out in a laboratory scale hybrid upflow anaerobic sludge blanket reactor (HUASB) with a working volume of 5.9 L. It was operated at organic loading rate (OLR) varying from 8 to 20 kg COD/m3 day for a period of 110 days. The maximum loading rate of the anaerobic reactor was found to be 19.2 kg COD/m3 day and the corresponding chemical oxygen demand (COD) removal at this OLR was 84%. The anaerobically treated wastewater at an OLR of 19.2 kg COD/m3 day was subjected to secondary solar photocatalytic oxidation treatment. The optimum pH and catalyst loading for the solar photochemical oxidation was found to be 5 and 300 mg/L, respectively. The secondary solar photocatalytic oxidation using TiO2 removed 62% of the COD from primary anaerobic treatment. Integration of anaerobic and solar photocatalytic treatment resulted in 95% removal of COD from the dairy wastewater. The findings suggest that anaerobic treatment followed by solar photo catalytic oxidation would be a promising alternative for the treatment of dairy wastewater.

AB - The present study was aimed to treat the dairy wastewater by using anaerobic and solar photocatalytic oxidation methods. The anaerobic treatment was carried out in a laboratory scale hybrid upflow anaerobic sludge blanket reactor (HUASB) with a working volume of 5.9 L. It was operated at organic loading rate (OLR) varying from 8 to 20 kg COD/m3 day for a period of 110 days. The maximum loading rate of the anaerobic reactor was found to be 19.2 kg COD/m3 day and the corresponding chemical oxygen demand (COD) removal at this OLR was 84%. The anaerobically treated wastewater at an OLR of 19.2 kg COD/m3 day was subjected to secondary solar photocatalytic oxidation treatment. The optimum pH and catalyst loading for the solar photochemical oxidation was found to be 5 and 300 mg/L, respectively. The secondary solar photocatalytic oxidation using TiO2 removed 62% of the COD from primary anaerobic treatment. Integration of anaerobic and solar photocatalytic treatment resulted in 95% removal of COD from the dairy wastewater. The findings suggest that anaerobic treatment followed by solar photo catalytic oxidation would be a promising alternative for the treatment of dairy wastewater.

KW - Anaerobic treatment

KW - Dairy wastewater

KW - HUASB

KW - Solar photocatalytic treatment

KW - TiO

UR - https://www.scopus.com/pages/publications/47749114979

U2 - 10.1016/j.solener.2008.02.015

DO - 10.1016/j.solener.2008.02.015

M3 - Article

AN - SCOPUS:47749114979

SN - 0038-092X

VL - 82

SP - 812

EP - 819

JO - Solar Energy

JF - Solar Energy

IS - 9

ER -

Treatment of dairy wastewater using anaerobic and solar photocatalytic methods

Abstract

Keywords

UN SDGs

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