Mahmoud Sharara 博士《粪肥 2.0：高效、可持续、有韧性农场的战略》.pdf

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1、Manure 2.0:Strategies for efficient,sustainable,and resilient farmsMahmoud Sharara,PhDExtension Specialist and Associate ProfessorBiological and Agricultural Engineering DepartmentNC State UniversityMay 6th,2025 Goldsboro,NCOverview Why Manure 2.0?Where we were Improvements Whats next?Why Manure 2.0

2、?Climate variabilityLagoon sludgeCompetition for landValuable recoveryTypeVolumeCost*Gallon/pig-space-yearUSD/pig-space yearFeed-Finisher1,030$7-$9Sow-Wean3,200$21-$28Where we are today*Assuming no emergency hauling surchargeSupernatant managementTypeVolumeCost*Gallon/pig-space-yearUSD/pig-space yea

3、rFeed-Finisher 40$1.4-$1.8Sow-Wean116$4.1$5.2*Contingent on land availabilityWhere we are todaySludge managementTypeCost*USD/pig-space yearFeed-Finisher$8-$11Sow-Wean$25-$33*Assuming no emergency hauling and available acres for sludge applicationWhere we are todayManure applicationWhere we are today

4、Sludge buildup impacts Pig-relatedAir qualityFlushing disruption Lagoon-relatedEmergency liquid hauling(3.5X cost)Sprayfield-relatedPlugging and disruptionP,Zn,Cu increaseWhere we are todayHigh-Zn sludge impactsZinc toxicity after sludge applicationSource.Dr.Luke Gatiboni(NCSU)Improvements?Improveme

5、ntsSludge-based fertilizerThrough DryingGH Drying System NCSU Campus(Lake Wheeler Road Farm)ImprovementsSludge-based fertilizerSludge Drying Cluster Phinite(Sampson Co)Through DryingImprovementsSludge-based fertilizerThrough DryingGH Drying System Smithfield Pilot SystemGH Drying System Smithfield D

6、rying ComplexImprovementsSludge-based fertilizerThrough DryingSummary of simulation predictions for a)vapor loss,and b)moisture content profileDrying rate driven by:1.Solar radiation2.Sludge moisture3.Air T&RH 4.Tillage/mixing frequency5.Ventilation rateImprovementsSludge-based fertilizerThrough Dry