Energy feasibility and life cycle assessment of sludge pretreatment methods for advanced anaerobic digestion

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dc.contributor.authorBalasundaram, Gowtham
dc.contributor.authorVidyarthi, Praveen Kumar
dc.contributor.authorGahlot, Pallavi
dc.contributor.authorArora, Pratham
dc.contributor.authorKumar, Vinod
dc.contributor.authorKumar, Manish
dc.contributor.authorKazmi, A. A.
dc.contributor.authorTyagi, Vinay Kumar
dc.date.accessioned2022-06-16T13:20:46Z
dc.date.available2022-06-16T13:20:46Z
dc.date.issued2022-05-26
dc.description.abstractEnergy sustainability is one of the critical parameters to be studied for the successful application of pretreatment processes. This study critically analyzes the energy efficiency of different energy-demanding sludge pretreatment techniques. Conventional thermal pretreatment of sludge (∼5% total solids, TS) produced 244 mL CH4/gTS, which could result in a positive energy balance of 2.6 kJ/kg TS. However, microwave pretreatment could generate only 178 mL CH4/gTS with a negative energy balance of −15.62 kJ/kg TS. In CAMBI process, the heat requirements can be compensated using exhaust gases and hot water from combined heat and power, and electricity requirements are managed by the use of cogeneration. The study concluded that <100 ℃ pretreatment effectively enhances the efficiency of anaerobic digestion and shows positive energy balance over microwave and ultrasonication. Moreover, microwave pretreatment has the highest global warming potential than thermal and ultrasonic pretreatments.en_UK
dc.identifier.citationBalasundaram G, Vidyarthi PK, Gahlot P, et al., (2022) Energy feasibility and life cycle assessment of sludge pretreatment methods for advanced anaerobic digestion, Bioresource Technology, Volume 357, August 2022, Article number 127345en_UK
dc.identifier.eissn1873-2976
dc.identifier.issn0960-8524
dc.identifier.urihttps://doi.org/10.1016/j.biortech.2022.127345
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/18035
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectThermal pretreatmenten_UK
dc.subjectMicrowaveen_UK
dc.subjectUltrasonicationen_UK
dc.subjectMethaneen_UK
dc.subjectEnergy analysisen_UK
dc.titleEnergy feasibility and life cycle assessment of sludge pretreatment methods for advanced anaerobic digestionen_UK
dc.typeArticleen_UK

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