2026-06-27http://hdl.handle.net/123456789/160803Limited Accessbusiness managementmodelseconomic aspectscost benefit analysisinvestmentresource managementenergy managementenergy generationfeacessewage sludgewastewater treatmentbiogasmethaneprivate sectorsanitationdeveloping countriesBusiness models and economic approaches for recovering energy from wastewater and fecal sludgeBook Chapter