Evaluation of Hydraulic Retention Time on Treatment of Coffee Processing Wastewater (CPWW) in EGSB Bioreactor
The coffee processing agro-industry generates large quantities of wastewater requiring systematic treatment prior to disposal. For this reason, the aim of this study was to evaluate the hydraulic retention times (HRT) in treatment of coffee processing wastewater (CPWW) using a laboratory scale Expan...
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creator | Cruz-Salomón, Abumalé Ríos-Valdovinos, Edna Pola-Albores, Francisco Lagunas-Rivera, Selene Meza-Gordillo, Rocío Ruíz-Valdiviezo, Víctor |
description | The coffee processing agro-industry generates large quantities of wastewater requiring systematic treatment prior to disposal. For this reason, the aim of this study was to evaluate the hydraulic retention times (HRT) in treatment of coffee processing wastewater (CPWW) using a laboratory scale Expanded Granular Sludge Bed (EGSB) bioreactor at different HRT (3 to 9 days). The EGSB was evaluated in mesophilic condition (26 ± 2 °C) with an average pH of 7.5 ± 0.2 to determine the chemical oxygen demand (COD) removal efficiency. According to the results, the COD removal efficiency increases from 94 to 98% when the HRT increase from 3 to 9 days; the α factor remained stable (0.98) throughout the evolution of the bioreactor. The HRT´s between 7-9 days generated effluents capable to be dischargeable into water bodies with a permitted COD concentration according to World Health Organization (WHO) and Official Mexican Environmental Regulations permissible limits. Results evidenced that the HRT of 9 days was the one that greater COD removal generated, so the EGSB bioreactor can be a sustainable alternative to solve the environmental problems, compared to other conventional methods to CPWW treatment. |
doi_str_mv | 10.3390/su10010083 |
format | Article |
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For this reason, the aim of this study was to evaluate the hydraulic retention times (HRT) in treatment of coffee processing wastewater (CPWW) using a laboratory scale Expanded Granular Sludge Bed (EGSB) bioreactor at different HRT (3 to 9 days). The EGSB was evaluated in mesophilic condition (26 ± 2 °C) with an average pH of 7.5 ± 0.2 to determine the chemical oxygen demand (COD) removal efficiency. According to the results, the COD removal efficiency increases from 94 to 98% when the HRT increase from 3 to 9 days; the α factor remained stable (0.98) throughout the evolution of the bioreactor. The HRT´s between 7-9 days generated effluents capable to be dischargeable into water bodies with a permitted COD concentration according to World Health Organization (WHO) and Official Mexican Environmental Regulations permissible limits. 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For this reason, the aim of this study was to evaluate the hydraulic retention times (HRT) in treatment of coffee processing wastewater (CPWW) using a laboratory scale Expanded Granular Sludge Bed (EGSB) bioreactor at different HRT (3 to 9 days). The EGSB was evaluated in mesophilic condition (26 ± 2 °C) with an average pH of 7.5 ± 0.2 to determine the chemical oxygen demand (COD) removal efficiency. According to the results, the COD removal efficiency increases from 94 to 98% when the HRT increase from 3 to 9 days; the α factor remained stable (0.98) throughout the evolution of the bioreactor. The HRT´s between 7-9 days generated effluents capable to be dischargeable into water bodies with a permitted COD concentration according to World Health Organization (WHO) and Official Mexican Environmental Regulations permissible limits. Results evidenced that the HRT of 9 days was the one that greater COD removal generated, so the EGSB bioreactor can be a sustainable alternative to solve the environmental problems, compared to other conventional methods to CPWW treatment.</description><subject>Bioreactors</subject><subject>Chemical oxygen demand</subject><subject>Coffee</subject><subject>Environmental impact</subject><subject>Environmental regulations</subject><subject>Hydraulic retention time</subject><subject>Retention time</subject><subject>Sludge</subject><subject>Sludge bed</subject><subject>Sustainability</subject><subject>Wastewater disposal</subject><subject>Wastewater treatment</subject><issn>2071-1050</issn><issn>2071-1050</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpNUE1LAzEQDaJgqb34CwJeVFidbDbb5GiX2goFi1Z6XNLtRLZ0NzXJKv33plbQYYY3PN588Ai5ZHDHuYJ73zGAmJKfkF4KQ5YwEHD6rz8nA-83EINzpljeI834U287HWrbUmvodL92utvWFX3BgO0PvagbpAd0qEMTyYOwsMYg0rmzFXpft-90qX3ALx3Q0etivlze0Lql48nriI5qG0erYN0FOTN663Hwi33y9jheFNNk9jx5Kh5mSZUqERKzEjx-CJlKpVgN0UilVSypUawzkeoMK4E6B5Znysgccs3QZJngaa4lSt4nV8e9O2c_OvSh3NjOtfFkmQKkQwlKQlTdHlWVs947NOXO1Y12-5JBeXC0_HOUfwNmjmcJ</recordid><startdate>20180101</startdate><enddate>20180101</enddate><creator>Cruz-Salomón, Abumalé</creator><creator>Ríos-Valdovinos, Edna</creator><creator>Pola-Albores, Francisco</creator><creator>Lagunas-Rivera, Selene</creator><creator>Meza-Gordillo, Rocío</creator><creator>Ruíz-Valdiviezo, Víctor</creator><general>MDPI AG</general><scope>AAYXX</scope><scope>CITATION</scope><scope>4U-</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><orcidid>https://orcid.org/0000-0001-9266-811X</orcidid></search><sort><creationdate>20180101</creationdate><title>Evaluation of Hydraulic Retention Time on Treatment of Coffee Processing Wastewater (CPWW) in EGSB Bioreactor</title><author>Cruz-Salomón, Abumalé ; Ríos-Valdovinos, Edna ; Pola-Albores, Francisco ; Lagunas-Rivera, Selene ; Meza-Gordillo, Rocío ; Ruíz-Valdiviezo, Víctor</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c295t-fb53033049285b7ef89a989a8ae5d452a4ec5ea601649f8606a1ef445326a8e83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Bioreactors</topic><topic>Chemical oxygen demand</topic><topic>Coffee</topic><topic>Environmental impact</topic><topic>Environmental regulations</topic><topic>Hydraulic retention time</topic><topic>Retention time</topic><topic>Sludge</topic><topic>Sludge bed</topic><topic>Sustainability</topic><topic>Wastewater disposal</topic><topic>Wastewater treatment</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cruz-Salomón, Abumalé</creatorcontrib><creatorcontrib>Ríos-Valdovinos, Edna</creatorcontrib><creatorcontrib>Pola-Albores, Francisco</creatorcontrib><creatorcontrib>Lagunas-Rivera, Selene</creatorcontrib><creatorcontrib>Meza-Gordillo, Rocío</creatorcontrib><creatorcontrib>Ruíz-Valdiviezo, Víctor</creatorcontrib><collection>CrossRef</collection><collection>University Readers</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Access via ProQuest (Open Access)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><jtitle>Sustainability</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cruz-Salomón, Abumalé</au><au>Ríos-Valdovinos, Edna</au><au>Pola-Albores, Francisco</au><au>Lagunas-Rivera, Selene</au><au>Meza-Gordillo, Rocío</au><au>Ruíz-Valdiviezo, Víctor</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Evaluation of Hydraulic Retention Time on Treatment of Coffee Processing Wastewater (CPWW) in EGSB Bioreactor</atitle><jtitle>Sustainability</jtitle><date>2018-01-01</date><risdate>2018</risdate><volume>10</volume><issue>2</issue><spage>83</spage><pages>83-</pages><issn>2071-1050</issn><eissn>2071-1050</eissn><abstract>The coffee processing agro-industry generates large quantities of wastewater requiring systematic treatment prior to disposal. For this reason, the aim of this study was to evaluate the hydraulic retention times (HRT) in treatment of coffee processing wastewater (CPWW) using a laboratory scale Expanded Granular Sludge Bed (EGSB) bioreactor at different HRT (3 to 9 days). The EGSB was evaluated in mesophilic condition (26 ± 2 °C) with an average pH of 7.5 ± 0.2 to determine the chemical oxygen demand (COD) removal efficiency. According to the results, the COD removal efficiency increases from 94 to 98% when the HRT increase from 3 to 9 days; the α factor remained stable (0.98) throughout the evolution of the bioreactor. The HRT´s between 7-9 days generated effluents capable to be dischargeable into water bodies with a permitted COD concentration according to World Health Organization (WHO) and Official Mexican Environmental Regulations permissible limits. 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source | MDPI - Multidisciplinary Digital Publishing Institute; EZB-FREE-00999 freely available EZB journals |
subjects | Bioreactors Chemical oxygen demand Coffee Environmental impact Environmental regulations Hydraulic retention time Retention time Sludge Sludge bed Sustainability Wastewater disposal Wastewater treatment |
title | Evaluation of Hydraulic Retention Time on Treatment of Coffee Processing Wastewater (CPWW) in EGSB Bioreactor |
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