The Effect of dehydration and rehydration on methanogenic activity of anaerobic sludge for biodigester seeding.

The Effect of dehydration and rehydration on methanogenic activity of anaerobic sludge for biodigester seeding.

The use of seeding material such as anaerobic sludge which are rich in anaerobic bacteria is very important to successful startup or restart an anaerobic reactor, nevertheless it is not easy transporting wet sludge from one project to another. The focus of this research was to evaluate the effect of dehydration and rehydration on the methanogenic activity on anaerobic sludge used for seeding. This experiment was carried out in batch following the VDI 4630 guideline and it aimed to make easier the transportation and handling of biodigester seed or inoculum. The anaerobic sludge was obtained from an upflow sludge blanket reactor of a coffee wastewater treatment plant and later dried at two temperatures: 35 °C to 40 °C and 55 °C to 60 °C, and at four different TS contents (19 %, 36 %, 53 % and >85 %) using an oven with convective air drying. Using microcrystalline cellulose as substrate, the control, 19 %, 36 %, 53 % and 85 % had a biogas yield of 0.61 m3 /kg VS, 0.51 m3 /kg VS, 0.40 m3 /kg VS and 0.52 m3 /kg VS of biogas respectively at dehydration temperature of 35 °C to 40 °C. However, there was no significant difference between the control and treatment at 19 %TS and between 36 %TS and 85 %TS. There was no significant difference in biogas production among 19 %TS, 36 %TS and 85 %TS that were dehydrated at 55 °C to 60 °C. The control and 19 %TS had a significant biogas production over the other treatments. The biogas yield of the control, 19 %TS, 36 %TS, 53 %TS and 85 %TS dehydrated at 55 °C to 60 °C was 0.53 m3 /kg VS, 0.40 m3 /kg VS, 0.30 m3 /kg VS and 0.42 m3 /kg VS of biogas respectively. The most effective temperature that was used to dehydrate the sludge was between 35 °C to 40 °C with a total solid concentration of about 85 %. This research proved that it is possible to dehydrate an inoculum without affecting its methanogenic activity. This dehydration process will affect the methanogens however will not inhibit them from producing biogas on the long run.

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Bibliographic Details
Main Authors: Andidi, Hashim Muhammad, Habib, Rasheed Ricardo
Other Authors: Víquez Arias, Joaquín
Format: info:eu-repo/semantics/bachelorThesis biblioteca
Language:eng
Published: Universidad EARTH 2018-12
Subjects:BIOGAS, DIGESTORES ANAEROBICOS, LODOS RESIDUALES, https://purl.org/pe-repo/ocde/ford#4.01.01,
Online Access:https://repositorio.earth.ac.cr/handle/UEARTH/373
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id dig-uearth-cr-UEARTH-373
record_format koha
institution UEARTH CR
collection DSpace
country Costa Rica
countrycode CR
component Bibliográfico
access En linea
databasecode dig-uearth-cr
tag biblioteca
region America Central
libraryname Biblioteca W. K. Kellogg de la UEARTH
language eng
topic BIOGAS
DIGESTORES ANAEROBICOS
LODOS RESIDUALES
https://purl.org/pe-repo/ocde/ford#4.01.01
BIOGAS
DIGESTORES ANAEROBICOS
LODOS RESIDUALES
https://purl.org/pe-repo/ocde/ford#4.01.01
spellingShingle BIOGAS
DIGESTORES ANAEROBICOS
LODOS RESIDUALES
https://purl.org/pe-repo/ocde/ford#4.01.01
BIOGAS
DIGESTORES ANAEROBICOS
LODOS RESIDUALES
https://purl.org/pe-repo/ocde/ford#4.01.01
Andidi, Hashim Muhammad
Habib, Rasheed Ricardo
The Effect of dehydration and rehydration on methanogenic activity of anaerobic sludge for biodigester seeding.
description The use of seeding material such as anaerobic sludge which are rich in anaerobic bacteria is very important to successful startup or restart an anaerobic reactor, nevertheless it is not easy transporting wet sludge from one project to another. The focus of this research was to evaluate the effect of dehydration and rehydration on the methanogenic activity on anaerobic sludge used for seeding. This experiment was carried out in batch following the VDI 4630 guideline and it aimed to make easier the transportation and handling of biodigester seed or inoculum. The anaerobic sludge was obtained from an upflow sludge blanket reactor of a coffee wastewater treatment plant and later dried at two temperatures: 35 °C to 40 °C and 55 °C to 60 °C, and at four different TS contents (19 %, 36 %, 53 % and >85 %) using an oven with convective air drying. Using microcrystalline cellulose as substrate, the control, 19 %, 36 %, 53 % and 85 % had a biogas yield of 0.61 m3 /kg VS, 0.51 m3 /kg VS, 0.40 m3 /kg VS and 0.52 m3 /kg VS of biogas respectively at dehydration temperature of 35 °C to 40 °C. However, there was no significant difference between the control and treatment at 19 %TS and between 36 %TS and 85 %TS. There was no significant difference in biogas production among 19 %TS, 36 %TS and 85 %TS that were dehydrated at 55 °C to 60 °C. The control and 19 %TS had a significant biogas production over the other treatments. The biogas yield of the control, 19 %TS, 36 %TS, 53 %TS and 85 %TS dehydrated at 55 °C to 60 °C was 0.53 m3 /kg VS, 0.40 m3 /kg VS, 0.30 m3 /kg VS and 0.42 m3 /kg VS of biogas respectively. The most effective temperature that was used to dehydrate the sludge was between 35 °C to 40 °C with a total solid concentration of about 85 %. This research proved that it is possible to dehydrate an inoculum without affecting its methanogenic activity. This dehydration process will affect the methanogens however will not inhibit them from producing biogas on the long run.
author2 Víquez Arias, Joaquín
author_facet Víquez Arias, Joaquín
Andidi, Hashim Muhammad
Habib, Rasheed Ricardo
format info:eu-repo/semantics/bachelorThesis
topic_facet BIOGAS
DIGESTORES ANAEROBICOS
LODOS RESIDUALES
https://purl.org/pe-repo/ocde/ford#4.01.01
author Andidi, Hashim Muhammad
Habib, Rasheed Ricardo
author_sort Andidi, Hashim Muhammad
title The Effect of dehydration and rehydration on methanogenic activity of anaerobic sludge for biodigester seeding.
title_short The Effect of dehydration and rehydration on methanogenic activity of anaerobic sludge for biodigester seeding.
title_full The Effect of dehydration and rehydration on methanogenic activity of anaerobic sludge for biodigester seeding.
title_fullStr The Effect of dehydration and rehydration on methanogenic activity of anaerobic sludge for biodigester seeding.
title_full_unstemmed The Effect of dehydration and rehydration on methanogenic activity of anaerobic sludge for biodigester seeding.
title_sort effect of dehydration and rehydration on methanogenic activity of anaerobic sludge for biodigester seeding.
publisher Universidad EARTH
publishDate 2018-12
url https://repositorio.earth.ac.cr/handle/UEARTH/373
work_keys_str_mv AT andidihashimmuhammad theeffectofdehydrationandrehydrationonmethanogenicactivityofanaerobicsludgeforbiodigesterseeding
AT habibrasheedricardo theeffectofdehydrationandrehydrationonmethanogenicactivityofanaerobicsludgeforbiodigesterseeding
AT andidihashimmuhammad effectofdehydrationandrehydrationonmethanogenicactivityofanaerobicsludgeforbiodigesterseeding
AT habibrasheedricardo effectofdehydrationandrehydrationonmethanogenicactivityofanaerobicsludgeforbiodigesterseeding
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spelling dig-uearth-cr-UEARTH-3732022-11-14T22:13:45Z The Effect of dehydration and rehydration on methanogenic activity of anaerobic sludge for biodigester seeding. Andidi, Hashim Muhammad Habib, Rasheed Ricardo Víquez Arias, Joaquín BIOGAS DIGESTORES ANAEROBICOS LODOS RESIDUALES https://purl.org/pe-repo/ocde/ford#4.01.01 The use of seeding material such as anaerobic sludge which are rich in anaerobic bacteria is very important to successful startup or restart an anaerobic reactor, nevertheless it is not easy transporting wet sludge from one project to another. The focus of this research was to evaluate the effect of dehydration and rehydration on the methanogenic activity on anaerobic sludge used for seeding. This experiment was carried out in batch following the VDI 4630 guideline and it aimed to make easier the transportation and handling of biodigester seed or inoculum. The anaerobic sludge was obtained from an upflow sludge blanket reactor of a coffee wastewater treatment plant and later dried at two temperatures: 35 °C to 40 °C and 55 °C to 60 °C, and at four different TS contents (19 %, 36 %, 53 % and >85 %) using an oven with convective air drying. Using microcrystalline cellulose as substrate, the control, 19 %, 36 %, 53 % and 85 % had a biogas yield of 0.61 m3 /kg VS, 0.51 m3 /kg VS, 0.40 m3 /kg VS and 0.52 m3 /kg VS of biogas respectively at dehydration temperature of 35 °C to 40 °C. However, there was no significant difference between the control and treatment at 19 %TS and between 36 %TS and 85 %TS. There was no significant difference in biogas production among 19 %TS, 36 %TS and 85 %TS that were dehydrated at 55 °C to 60 °C. The control and 19 %TS had a significant biogas production over the other treatments. The biogas yield of the control, 19 %TS, 36 %TS, 53 %TS and 85 %TS dehydrated at 55 °C to 60 °C was 0.53 m3 /kg VS, 0.40 m3 /kg VS, 0.30 m3 /kg VS and 0.42 m3 /kg VS of biogas respectively. The most effective temperature that was used to dehydrate the sludge was between 35 °C to 40 °C with a total solid concentration of about 85 %. This research proved that it is possible to dehydrate an inoculum without affecting its methanogenic activity. This dehydration process will affect the methanogens however will not inhibit them from producing biogas on the long run. El uso de inóculo en mayoría de los casos provenientes de planta de lodo activado es muy importante para el arranque de biodigestores exitosamente. El enfoco de esta investigación fue evaluar el efecto de la deshidratación y la rehidratación, sobre la actividad metanogénicas de un lodo anaeróbico utilizado para la inoculación. Este experimento se llevó a cabo en batch siguiendo la directriz VDI 4630 y tiene como objetivo concentrar estas bacterias metanogénicas por deshidratación, para facilitar el trasporte del lodo y la inoculación de biodigestores. El lodo se obtuvo de un reactor anaeróbico de flujo ascendiente con manta de lodo de una planta de tratamiento de aguas residuales de café y luego se secó a dos temperaturas; 35 °C a 40 °C y 55 °C a 60 °C, para alcanzar cuatro diferentes concentraciones de sólidos totales (19 %, 36 %, 53 % y >85 %), utilizando un horno con secado por convección. Usando celulosa microcristalina como sustrato, el testigo, 19 %, 36 %, 53 % y 85 % tuvieron un rendimiento de biogás de of 0.61 m3 /kg VS, 0.51 m3 /kg VS, 0.40 m3 /kg VS y 0.52 m3 /kg VS respectivamente, deshidratados a una temperatura de 35 °C a 40 °C. Sin embargo, no hubo diferencias significativas entre el control y el tratamiento al 19 % de ST, como también entre el 36 % de ST y el 85 % de ST. No se detectó diferencias significativas en la producción de biogás entre el 19 %ST, el 36 %ST y el 85 %ST que se deshidrataron a 55 °C a 60 °C. El testigo y el 19 %ST tuvieron una producción de biogás significativamente alta, comparado a los demás tratamientos. El rendimiento de biogás deshidratado a 55 °C a 60 °C del testigo, el 19 %TS, el 36 %ST, el 53 %ST y el 85 %ST fue de 0.53 m3 /kg VS, 0.40 m3 /kg VS, 0.30 m3 /kg VS y 0.42 m3 /kg VS correspondientemente. La temperatura más efectiva que se estableció para deshidratar el lodo fue entre 35 °C y 40 °C, con una concentración total de sólidos de aproximadamente el 85 %. Esta investigación demostró la posibilidad de deshidratar los inóculos sin afectar la actividad metanogénica. El proceso de la deshidratación afectaría las bacterias metanogénicas, pero no les detiene de la producción de biogás. Trabajo de investigación 2022-11-06T03:10:14Z 2022-11-06T03:10:14Z 2018-12 info:eu-repo/semantics/bachelorThesis https://repositorio.earth.ac.cr/handle/UEARTH/373 eng info:eu-repo/semantics/restrictedAccess application/pdf application/pdf Universidad EARTH Universidad EARTH Repositorio Digital UEARTH

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