Methane Production and Struvite Recovery from Disintegrated Biosludge at Different Microwave Powers

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dc.authoridABDULZAHRA, ALI/0000-0003-4099-9042
dc.contributor.authorAlhraishawi, Ali
dc.contributor.authorAslan, Sukru
dc.contributor.authorOzturk, Mustafa
dc.date.accessioned2025-05-04T16:47:22Z
dc.date.available2025-05-04T16:47:22Z
dc.date.issued2025
dc.departmentSivas Cumhuriyet Üniversitesi
dc.description.abstractThis study examined the impact of microwave (MW) irradiation on the disintegration of waste biological sludge (WBS) and CH4 production during anaerobic digestion (AD), alongside the recovery of NH4-N and PO4-P via struvite precipitation in AD tailings. MW treatment was conducted under controlled conditions (120 degrees C and 2 degrees C/min) at the power levels of 900 W and 1,800 W. The soluble chemical oxygen demand (sCOD) increased by factors of 465 and 432 at 900 W and 1,800 W, respectively, while sugar and protein concentrations rose by factors of 840-110 and 1.93-2.15 compared to the untreated WBS. However, MW irradiation was less effective for releasing NH4-N and PO4-P. The disintegration of WBS improved CH4 production in the biochemical methane potential (BMP) test by 26% and 35% at 900 W and 1,800 W, respectively, relative to the control. Despite these enhancements, the process was deemed uneconomical due to the high energy demand of MW irradiation compared to the energy gained from the increased CH4 yield. Additionally, the sludge dewatering properties, measured as sludge filter resistance (SFR), deteriorated significantly, increasing from 2.87 x 10(14) for the untreated WBS to 6.50 x 10(14) and 6.70 x 10(14) at 900 W and 1,800 W, respectively. Kinetic modeling of the BMP tests revealed that the Transference Function provided the best fit to the experimental data. In the struvite precipitation, the optimal recovery of NH4-N and PO4-P (96%) was achieved at a molar ratio of 1.25/1/1 for Mg/N/P. [GRAPHICS] .
dc.description.sponsorshipThe Research Fund of Cumhuriyet University (CUBAP) [M-2022-838]
dc.description.sponsorshipThis study was supported by The Research Fund of Cumhuriyet University (CUBAP) under Grant No. M-2022-838, Sivas, Turkiye.
dc.identifier.doi10.1007/s12649-025-02932-x
dc.identifier.issn1877-2641
dc.identifier.issn1877-265X
dc.identifier.scopus2-s2.0-85217983597
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1007/s12649-025-02932-x
dc.identifier.urihttps://hdl.handle.net/20.500.12418/35580
dc.identifier.wosWOS:001414812800001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofWaste and Biomass Valorization
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250504
dc.subjectAnaerobic digestion
dc.subjectBiosludge disintegration
dc.subjectEnergy consumption
dc.subjectMW irradiation
dc.titleMethane Production and Struvite Recovery from Disintegrated Biosludge at Different Microwave Powers
dc.typeArticle

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