The kinetics of tempeh wastewater treatment using Arthrospira platensis

The microalga Arthrospira platensis (Spirulina) was used for tempeh wastewater treatment. Microalga growth and the kinetics of chemical oxygen demand (COD) degradation under different light intensities (2,100 and 4,300 lux), tempeh wastewater concentrations (0, 0.5, 1, 1.5% v/v), and sodium nitrate...

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Autores principales:	Lieke Riadi, Theresia Desy Askitosari, Ragil Puspita Dutaning Widhi, Melvina Laurensia, Yuana Elly Agustin, Yalun Arifin
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	arthrospira platensis cod degradation kinetic model microalgae tempeh wastewater Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/7b3fdc4aaa3a480a8f2e98f292c2eeba
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spelling	oai:doaj.org-article:7b3fdc4aaa3a480a8f2e98f292c2eeba2021-11-06T11:09:51ZThe kinetics of tempeh wastewater treatment using Arthrospira platensis0273-12231996-973210.2166/wst.2021.183https://doaj.org/article/7b3fdc4aaa3a480a8f2e98f292c2eeba2021-06-01T00:00:00Zhttp://wst.iwaponline.com/content/83/12/2997https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732The microalga Arthrospira platensis (Spirulina) was used for tempeh wastewater treatment. Microalga growth and the kinetics of chemical oxygen demand (COD) degradation under different light intensities (2,100 and 4,300 lux), tempeh wastewater concentrations (0, 0.5, 1, 1.5% v/v), and sodium nitrate concentrations (0, 0.75, 1, 2, 2.5 g/L) were studied. Improved cell growth in wastewater indicated that mixotrophic growth was preferred. The addition of sodium nitrate up to 2 g/L increased COD removal. The highest COD removal was 92.2%, which was obtained from cultivation with 1% v/v tempeh wastewater, 2 g/L sodium nitrate, 2,100 lux, and the specific growth rate of 0.33 ± 0.01 day−1. The COD removal followed a pseudo-first-order kinetic model with the kinetic constant of 0.3748 day−1 and the nitrate uptake rate of 0.122 g/L-day. The results can be used to design a pilot-scale tempeh wastewater treatment facility using A. platensis for tertiary treatment. Based on the kinetic model, a 20 m3 reactor can treat tempeh wastewater to reduce the COD from 400 to 100 ppm in 4 days and produces approximately 32.8 kg of dried microalgae. HIGHLIGHTS The alga Arthrospira platensis can reduce COD value in diluted tempeh wastewater up to 90% COD removal.; The addition of sodium nitrate up to 2 g/L improves the COD reduction.; The COD degradation follows a pseudo-first-order kinetic model.; The results can be used to design a pilot-scale tempeh wastewater treatment facility using A. platensis for tertiary treatment.;Lieke RiadiTheresia Desy AskitosariRagil Puspita Dutaning WidhiMelvina LaurensiaYuana Elly AgustinYalun ArifinIWA Publishingarticlearthrospira platensiscod degradationkinetic modelmicroalgaetempeh wastewaterEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 12, Pp 2997-3006 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	arthrospira platensis cod degradation kinetic model microalgae tempeh wastewater Environmental technology. Sanitary engineering TD1-1066
spellingShingle	arthrospira platensis cod degradation kinetic model microalgae tempeh wastewater Environmental technology. Sanitary engineering TD1-1066 Lieke Riadi Theresia Desy Askitosari Ragil Puspita Dutaning Widhi Melvina Laurensia Yuana Elly Agustin Yalun Arifin The kinetics of tempeh wastewater treatment using Arthrospira platensis
description	The microalga Arthrospira platensis (Spirulina) was used for tempeh wastewater treatment. Microalga growth and the kinetics of chemical oxygen demand (COD) degradation under different light intensities (2,100 and 4,300 lux), tempeh wastewater concentrations (0, 0.5, 1, 1.5% v/v), and sodium nitrate concentrations (0, 0.75, 1, 2, 2.5 g/L) were studied. Improved cell growth in wastewater indicated that mixotrophic growth was preferred. The addition of sodium nitrate up to 2 g/L increased COD removal. The highest COD removal was 92.2%, which was obtained from cultivation with 1% v/v tempeh wastewater, 2 g/L sodium nitrate, 2,100 lux, and the specific growth rate of 0.33 ± 0.01 day−1. The COD removal followed a pseudo-first-order kinetic model with the kinetic constant of 0.3748 day−1 and the nitrate uptake rate of 0.122 g/L-day. The results can be used to design a pilot-scale tempeh wastewater treatment facility using A. platensis for tertiary treatment. Based on the kinetic model, a 20 m3 reactor can treat tempeh wastewater to reduce the COD from 400 to 100 ppm in 4 days and produces approximately 32.8 kg of dried microalgae. HIGHLIGHTS The alga Arthrospira platensis can reduce COD value in diluted tempeh wastewater up to 90% COD removal.; The addition of sodium nitrate up to 2 g/L improves the COD reduction.; The COD degradation follows a pseudo-first-order kinetic model.; The results can be used to design a pilot-scale tempeh wastewater treatment facility using A. platensis for tertiary treatment.;
format	article
author	Lieke Riadi Theresia Desy Askitosari Ragil Puspita Dutaning Widhi Melvina Laurensia Yuana Elly Agustin Yalun Arifin
author_facet	Lieke Riadi Theresia Desy Askitosari Ragil Puspita Dutaning Widhi Melvina Laurensia Yuana Elly Agustin Yalun Arifin
author_sort	Lieke Riadi
title	The kinetics of tempeh wastewater treatment using Arthrospira platensis
title_short	The kinetics of tempeh wastewater treatment using Arthrospira platensis
title_full	The kinetics of tempeh wastewater treatment using Arthrospira platensis
title_fullStr	The kinetics of tempeh wastewater treatment using Arthrospira platensis
title_full_unstemmed	The kinetics of tempeh wastewater treatment using Arthrospira platensis
title_sort	kinetics of tempeh wastewater treatment using arthrospira platensis
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/7b3fdc4aaa3a480a8f2e98f292c2eeba
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The kinetics of tempeh wastewater treatment using Arthrospira platensis

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