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Description: This work is focused on optimizing the hot air oven pretreatment conditions (temperature and time) and anaerobic digestion process for the biological bioconversion of pulp and paper mill sludge into biogas in a batch assay. The effectiveness of pretreatment study has done by chemical and compositional analyses. The pretreatment at 80oC for 90 min shows the highest impact on sludge solubilization rate. The soluble chemical oxygen demand and volatile fatty acid were increased by 1.41 and 1.95 times respectively. In addition to that XRD and FT-IR spectroscopic characterization shows the development of aliphatic, unsaturated and carbonyl carbon functionalities in the pretreated samples. FESEM picture also qualities the change in alteration of the structure after the thermal pretreatment. Thus hot air oven pretreatments serve to disrupt the lignocellulosic structure, making the cellulose easily accessible to acidogenic microorganisms. Biochemical methane potential test was carried out to determine the efficacy of hot air oven pretreated and untreated paper mill sludge. The methane production potential was increased from 264 to 303 mL of CH4 g VSremoved-1 in pulp and paper mill sludge after hot air oven pretreatment.

Keywords: Thermal pretreatment, anaerobic digestion, lignocellulose, bioprocessing, biorefinery.
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Date: 2017-08-07
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Conference name: CSBE/SCGAB 2017 Annual Conference, Canad Inns Polo Park, Winnipeg, Manitoba, 6-10 August 2017.
Session name: Session 5B: Biological Wastewater Treatment

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Type: Text.Article
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Publication type: Technical conference
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Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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