Experimental investigation on sludge conditioning and dewatering using an agricultural biomass coupled with resource recovery

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dc.contributor.authorChopade, G.
dc.contributor.authorDevatha, C.P.
dc.date.accessioned2026-02-04T12:25:15Z
dc.date.issued2024
dc.description.abstractIn this study, the effect of modified areca husk fibre biochar (MAFB-AlCl<inf>3</inf>) on dairy sludge conditioning and dewatering along with raw and modified coconut shell biochar (MCSB-FeCl<inf>3</inf>) was investigated. Further, MgO impregnated biochars of areca husk fibre and coconut shells was carried out to evaluate the performance on phosphate recovery from the diary sludge. The enhancement in sludge dewatering with MAFB-AlCl<inf>3</inf> were evaluated experimentally and significant reduction of capillary suction time (CST) (51.6 %), moisture content (18%), zeta potential (1.3 mV) and increased settleability (32.7%) were observed. The sludge conditioning parameters namely dosage (% of dry solids (DS)), rapid mixing time (RMT), slow mixing time (SMT) were optimized by response surface methodology for the modified biochars. Optimum CST (31.51 s) was obtained at dosage (50 % of DS), RMT (9.89 min) and SMT (17.23 min). Results of batch study for phosphate recovery by MgO impregnated biochars (MgB) was found to be 96.6 % and 100 % by MgB of areca husk fibre (MgAFB) and coconut shells (MgCSB) respectively. The morphological characteristics and elemental distribution using field emission scanning electron microscopy (FE-SEM) & energy dispersive X-ray spectroscopy (EDS) reveals the structural change in the sludge particles for the modified biochars as well as for sludge. Hence MAFB-AlCl<inf>3</inf>, MgAFB and MgCSB is proved to be suitable and an effective candidate for sludge conditioning and dewatering coupled with phosphate recovery in handling the diary sludge. © 2024 Elsevier Ltd
dc.identifier.citationJournal of Environmental Management, 2024, 352, , pp. -
dc.identifier.issn3014797
dc.identifier.urihttps://doi.org/10.1016/j.jenvman.2024.120098
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/21290
dc.publisherAcademic Press
dc.subjectChlorine compounds
dc.subjectDewatering
dc.subjectEnamels
dc.subjectEnergy dispersive spectroscopy
dc.subjectField emission microscopes
dc.subjectIron compounds
dc.subjectMagnesia
dc.subjectMass transfer
dc.subjectMixing
dc.subjectRecovery
dc.subjectBiochar
dc.subjectCapillary suction time
dc.subjectCoconut shells
dc.subjectDairy sludge
dc.subjectMixing time
dc.subjectOptimisations
dc.subjectPhosphate recovery
dc.subjectResource recovery
dc.subjectSludge conditioning
dc.subjectSludge dewatering
dc.subjectScanning electron microscopy
dc.subjectcharcoal
dc.subjectmagnesium oxide
dc.subjectphosphate
dc.subjectwater
dc.subjectbiochar
dc.subjectbiomass
dc.subjectcrop residue
dc.subjectexperimental study
dc.subjectmoisture content
dc.subjectoptimization
dc.subjectreduction
dc.subjectsludge
dc.subjectAreca
dc.subjectArticle
dc.subjectchemical composition
dc.subjectchemical structure
dc.subjectcoconut
dc.subjectcontrolled study
dc.subjectdairy wastewater
dc.subjectelemental analysis
dc.subjectenergy dispersive X ray spectroscopy
dc.subjectfield emission scanning electron microscopy
dc.subjectmoisture
dc.subjectrecycling
dc.subjectresponse surface method
dc.subjectseed husk
dc.subjectsludge conditioning
dc.subjectsludge dewatering
dc.subjectzeta potential
dc.subjectchemistry
dc.subjectprocedures
dc.subjectsewage
dc.subjectBiomass
dc.subjectCharcoal
dc.subjectMagnesium Oxide
dc.subjectPhosphates
dc.subjectSewage
dc.subjectWaste Disposal, Fluid
dc.subjectWater
dc.titleExperimental investigation on sludge conditioning and dewatering using an agricultural biomass coupled with resource recovery

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