Treatment of Tea Industry Wastewater Using a Combined Adsorption and Advanced Oxidation Process

Dennis O. Otieno, A. Kumar, Maurice S. Onyango, Aoyi Ochieng

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Tea, produced from the evergreen plant, Camellia Sinensis, is the most widely consumed beverage in the world after water. Although tea processing has now diversified into various speciality end products such as instant, white, oolong, iced, flavoured, and various blends, the most abundantly produced tea product in the world is fermented black tea. Black tea production is essentially a “dry” process, as no water is used at any of the production process steps. However liquid waste is generated due to the use of water for cleaning process equipment and factory premises. The waste exits the factory as coloured liquid effluent that must be treated before being discharged into rivers, lakes and other fresh water bodies. This paper presents findings of a study carried out to evaluate the performance of a combined adsorption and advanced oxidation process in removing colour from tea industry wastewater. The variables explored were the effects of sorbent mass, oxidant dosage, solution pH, agitation rate and temperature, on the decolouration of tea industry effluent. The results indicate that the combined adsorption and advanced oxidation is most effective at pH 3 wherein the effluent colour was reduced from 478 Pt-Co colour units to 8 Pt-Co colour units. The latter meets the NEMA recommended limit for discharge of colored effluents.
Original languageEnglish
Title of host publicationProceedings of the 2014 International Annual Conference on Sustainable Research and Innovation
Pages100-103
Number of pages4
ISBN (Electronic)2079-6226
Publication statusPublished - 2014

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tea
adsorption
wastewater
oxidation
industry
effluent
oxidant
water
liquid
lake
river

Cite this

Otieno, D. O., Kumar, A., Onyango, M. S., & Ochieng, A. (2014). Treatment of Tea Industry Wastewater Using a Combined Adsorption and Advanced Oxidation Process. In Proceedings of the 2014 International Annual Conference on Sustainable Research and Innovation (pp. 100-103)
Otieno, Dennis O. ; Kumar, A. ; Onyango, Maurice S. ; Ochieng, Aoyi. / Treatment of Tea Industry Wastewater Using a Combined Adsorption and Advanced Oxidation Process. Proceedings of the 2014 International Annual Conference on Sustainable Research and Innovation. 2014. pp. 100-103
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title = "Treatment of Tea Industry Wastewater Using a Combined Adsorption and Advanced Oxidation Process",
abstract = "Tea, produced from the evergreen plant, Camellia Sinensis, is the most widely consumed beverage in the world after water. Although tea processing has now diversified into various speciality end products such as instant, white, oolong, iced, flavoured, and various blends, the most abundantly produced tea product in the world is fermented black tea. Black tea production is essentially a “dry” process, as no water is used at any of the production process steps. However liquid waste is generated due to the use of water for cleaning process equipment and factory premises. The waste exits the factory as coloured liquid effluent that must be treated before being discharged into rivers, lakes and other fresh water bodies. This paper presents findings of a study carried out to evaluate the performance of a combined adsorption and advanced oxidation process in removing colour from tea industry wastewater. The variables explored were the effects of sorbent mass, oxidant dosage, solution pH, agitation rate and temperature, on the decolouration of tea industry effluent. The results indicate that the combined adsorption and advanced oxidation is most effective at pH 3 wherein the effluent colour was reduced from 478 Pt-Co colour units to 8 Pt-Co colour units. The latter meets the NEMA recommended limit for discharge of colored effluents.",
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Otieno, DO, Kumar, A, Onyango, MS & Ochieng, A 2014, Treatment of Tea Industry Wastewater Using a Combined Adsorption and Advanced Oxidation Process. in Proceedings of the 2014 International Annual Conference on Sustainable Research and Innovation. pp. 100-103.

Treatment of Tea Industry Wastewater Using a Combined Adsorption and Advanced Oxidation Process. / Otieno, Dennis O.; Kumar, A.; Onyango, Maurice S.; Ochieng, Aoyi.

Proceedings of the 2014 International Annual Conference on Sustainable Research and Innovation. 2014. p. 100-103.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Treatment of Tea Industry Wastewater Using a Combined Adsorption and Advanced Oxidation Process

AU - Otieno, Dennis O.

AU - Kumar, A.

AU - Onyango, Maurice S.

AU - Ochieng, Aoyi

PY - 2014

Y1 - 2014

N2 - Tea, produced from the evergreen plant, Camellia Sinensis, is the most widely consumed beverage in the world after water. Although tea processing has now diversified into various speciality end products such as instant, white, oolong, iced, flavoured, and various blends, the most abundantly produced tea product in the world is fermented black tea. Black tea production is essentially a “dry” process, as no water is used at any of the production process steps. However liquid waste is generated due to the use of water for cleaning process equipment and factory premises. The waste exits the factory as coloured liquid effluent that must be treated before being discharged into rivers, lakes and other fresh water bodies. This paper presents findings of a study carried out to evaluate the performance of a combined adsorption and advanced oxidation process in removing colour from tea industry wastewater. The variables explored were the effects of sorbent mass, oxidant dosage, solution pH, agitation rate and temperature, on the decolouration of tea industry effluent. The results indicate that the combined adsorption and advanced oxidation is most effective at pH 3 wherein the effluent colour was reduced from 478 Pt-Co colour units to 8 Pt-Co colour units. The latter meets the NEMA recommended limit for discharge of colored effluents.

AB - Tea, produced from the evergreen plant, Camellia Sinensis, is the most widely consumed beverage in the world after water. Although tea processing has now diversified into various speciality end products such as instant, white, oolong, iced, flavoured, and various blends, the most abundantly produced tea product in the world is fermented black tea. Black tea production is essentially a “dry” process, as no water is used at any of the production process steps. However liquid waste is generated due to the use of water for cleaning process equipment and factory premises. The waste exits the factory as coloured liquid effluent that must be treated before being discharged into rivers, lakes and other fresh water bodies. This paper presents findings of a study carried out to evaluate the performance of a combined adsorption and advanced oxidation process in removing colour from tea industry wastewater. The variables explored were the effects of sorbent mass, oxidant dosage, solution pH, agitation rate and temperature, on the decolouration of tea industry effluent. The results indicate that the combined adsorption and advanced oxidation is most effective at pH 3 wherein the effluent colour was reduced from 478 Pt-Co colour units to 8 Pt-Co colour units. The latter meets the NEMA recommended limit for discharge of colored effluents.

M3 - Conference contribution

SP - 100

EP - 103

BT - Proceedings of the 2014 International Annual Conference on Sustainable Research and Innovation

ER -

Otieno DO, Kumar A, Onyango MS, Ochieng A. Treatment of Tea Industry Wastewater Using a Combined Adsorption and Advanced Oxidation Process. In Proceedings of the 2014 International Annual Conference on Sustainable Research and Innovation. 2014. p. 100-103