Evaluation of Pretreatment Effect for Spent Mushroom Substrate on Methane Production

In this study, various pretreatments were applied to spent mushroom substrate (SMS) for the methane gas production by anaerobic digestion. Hydrothermal treatment, acid treatment using H2SO4, and alkali treatment using NaOH or KOH were applied and evaluated as pretreatment of SMS before anaerobic dig...

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Veröffentlicht in:Journal of Water and Environment Technology 2019, Vol.17(3), pp.174-179
Hauptverfasser: Ikeda, Shoji, Watari, Takahiro, Yamauchi, Masahito, Hatamoto, Masashi, Hara, Hirofumi, Maki, Shinya, Yamada, Masayoshi, Yamaguchi, Takashi
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container_end_page 179
container_issue 3
container_start_page 174
container_title Journal of Water and Environment Technology
container_volume 17
creator Ikeda, Shoji
Watari, Takahiro
Yamauchi, Masahito
Hatamoto, Masashi
Hara, Hirofumi
Maki, Shinya
Yamada, Masayoshi
Yamaguchi, Takashi
description In this study, various pretreatments were applied to spent mushroom substrate (SMS) for the methane gas production by anaerobic digestion. Hydrothermal treatment, acid treatment using H2SO4, and alkali treatment using NaOH or KOH were applied and evaluated as pretreatment of SMS before anaerobic digestion. The methane gas produced was 119.1 mL/g-dry weight (D.W.) with untreated SMS, 55.5 mL/g-D.W. with hydrothermal treated SMS, 22.5 mL /g-D.W. with acid treated SMS, and 219.1 mL/g-D.W. with alkali treated SMS. These results demonstrated that the alkali treatment showed the largest amount of methane gas production between these pretreatments of SMS. Alkali treatment combined with heating did not show significantly affect the amount of methane gas production. Also, there was no significant difference in the amount of methane gas production between NaOH treatment and KOH treatment. These results indicated that optimum pretreatment for the methane gas production of SMS is alkaline treatment. It was also suggested that the no necessary for heat pretreatment of SMS and alkaline treatment such as KOH is most effective method of SMS pretreatment for the methane gas production by anaerobic digestion.
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Hydrothermal treatment, acid treatment using H2SO4, and alkali treatment using NaOH or KOH were applied and evaluated as pretreatment of SMS before anaerobic digestion. The methane gas produced was 119.1 mL/g-dry weight (D.W.) with untreated SMS, 55.5 mL/g-D.W. with hydrothermal treated SMS, 22.5 mL /g-D.W. with acid treated SMS, and 219.1 mL/g-D.W. with alkali treated SMS. These results demonstrated that the alkali treatment showed the largest amount of methane gas production between these pretreatments of SMS. Alkali treatment combined with heating did not show significantly affect the amount of methane gas production. Also, there was no significant difference in the amount of methane gas production between NaOH treatment and KOH treatment. These results indicated that optimum pretreatment for the methane gas production of SMS is alkaline treatment. 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subjects Anaerobic digestion
Anaerobic treatment
Digestion
Dry weight
energy recovery
Gas production
Heating
Hydrothermal treatment
lignocellulosic biomass
Methane
methane fermentation
Mushrooms
Potassium hydroxides
Pretreatment
pretreatment technology
Refuse as fuel
Sodium hydroxide
Substrates
Sulfuric acid
Sulphuric acid
title Evaluation of Pretreatment Effect for Spent Mushroom Substrate on Methane Production
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