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Item Information   Holdings       More by this author     Skubal, Nicole L.     Subjects     Waste products -- Transportation     Food industry and trade     Refuse disposal and refuse     Waste minimization     Salvage (Waste, etc.)     MSEV Project.     Browse Catalog     by author:      Skubal, Nicole L.       by title:      Comparing transporta...         MARC Display

Comparing transportation methods for commercial food waste disposal / Nicole L. Skubal. by Skubal, Nicole L. Subjects Waste products -- Transportation   Food industry and trade   Refuse disposal and refuse   Waste minimization   Salvage (Waste, etc.)   MSEV Project. Description:  62 leaves : ill. ; 29 cm. Contents:  Thesis advisor: Dr. Carol Diggelman Committee members: Dr. Frank Mahuta, Kenneth Kaszubowski Food waste definition and sources -- Food waste quantities overview -- USEPA food waste management hierarchy -- Food waste characteristics -- Greenhouse gases -- Greenhouses gases and solid waste management -- Food waste disposers and publicly-owned treatment works -- Food waste disposers and sewage collection systems -- Regulations -- Solid waste disposal (ONF Capitol Street to MMSD South Shore) -- Sewer disposal (ONF State Street to MMSD South Shore) -- Liquid waste disposal (ONF Kinnickinnic Avenue to MMSD South Shore) -- Food waste generation -- Disposal costs -- Greenhouse gas emissions -- Performance -- Cost analysis -- Life-cycle environmental impacts. Currently, the majority of commercial and institutional food waste is hauled by a collection service and disposed of in landfills. Decomposition of food waste under anaerobic conditions produces methane, a greenhouse gas (GHG) twenty-one times more potent than carbon dioxide. GHGs released from decomposing food waste in landfills are lost to the atmosphere before the landfill is capped and the gas recovery system can efficiently capture the gas. An alternative method to disposing food waste in landfills is wastewater collection and treatment followed by anaerobic digestion. Publicly-owned treatment works (POTWs) are capable of capturing the methane from food waste related GHGs on the atmosphere. Three different methods for transporting commercial food waste to a POTW (solid waste, sewer disposal, liquid waste disposal) are analyzed in terms of GHG emissions, costs, and life-cycle environmental impacts using a local organic grocery chain as a case study. All three methods require source separation of food waste prior to transportation to the POTW. Direct haul followed by landfilling generates approximately 1.69 lbs carbon dioxide (CO2)Eq per lbs of wet food waste, with food waste decomposition accounting for ninety-four percent of the total GHG emissions and fossil fuel combustion accounting for the remaining six percent. Both the sewer and liquid waste disposal methods generate 0.02 lbs CO2 Eq per lbs of wet food waste compared to the solid waste method generating 0.07 lbs CO2 Eq per lbs of wet food waste. The net present value (NPV) per ton of food waste for the current direct haul followed by landfilling disposal is $31.24. The NPV per ton of food waste for the direct haul to wastewater treatment is $56.65. The NPV per ton of food waste for the sewer disposal method if ($10.99) and for the liquid disposal method is ($3.33). The solid waste disposal method has low or no capital costs, frequent hauling of both food waste and MSW, odor/pest/health issues, and additional labor costs for ONF food waste storage and POTW operations. The liquid waste disposal method has higher capital costs, less frequent hauling, little to no odor/pest/health issues, and additional labor costs associated with the slurry tank system. The sewer disposal method has smaller capital costs and elimination of hauling, additional storage needs, and odor/pest/health issues. The sewer disposal method can be quickly implemented by a food waste generating facility and has low capital and operating costs. Implementation of this method does not require the local POTW to change or modify their operations to accommodate the additional organic loadings. However, each facility needs to evaluate their current disposal method and costs and decide if an alternative means of food waste disposal is more effective, efficient and environmentally friendly.   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .S597 2009 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

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