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Title: Demonstration of landfill gas-enhancement techniques in landfill simulators

Sixteen landfill test cells (lysimeters) were constructed, each to hold approximately 0.80 m/sup 3/ (1 yd/sup 3/) of shredded refuse. The lysimeters were located above ground on a concrete slab in an enclosed, temperature-controlled room. The purpose of the project was to evaluate environmental variables that have been proposed to enhance methane production. The four variables investigated were accelerated moisture addition, leachate recirculation, pH control/buffer addition, and nutrient addition. Domestic municipal refuse was shredded to a particle size of 38 to 64 mm, mixed with dry chemical additives in selected cells, and compacted. The dry chemical additives included ammonium phosphate (added as nutrient) and calcium carbonate (added as buffer). Variable quantities of infiltration water were added tp different cells each month to identify the gas-enhancement value of accelerated moisture addition. Leachate removed each month was recirculated into selected lysimeters to identify the value of this technique in the sense of adding moisture and retaining nutrients. Results indicate that significant amounts of methane were generated in the majority of the test cells. Methane production was greatest in the leachate-recycle cells, and low in most nonrecycle cells, regardless of variables such as buffer addition, nutrient addition, or high infiltration. No significant differencesmore » in methane generation were observed between the recycle cells with either nutrient or buffer additives. After 2 years, methane levels were lower than the expected range of 40 to 60%.« less
Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
6632227
Report Number(s):
ANL/CNSV-TM-103
ON: DE83003631
DOE Contract Number:
W-31-109-ENG-38
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of document are illegible
Research Org:
SCS Engineers, Inc., Covington, KY (USA); Cincinnati Univ., OH (USA)
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; LEACHATES; CHEMICAL COMPOSITION; METHANE; BIOSYNTHESIS; REFUSE DERIVED FUELS; PRODUCTION; ADDITIVES; ANAEROBIC DIGESTION; CADMIUM; CARBON; CHEMICAL OXYGEN DEMAND; CHROMIUM; COPPER; EXPERIMENTAL DATA; LEACHING; LEAD; MOISTURE; NICKEL; NITROGEN; NUTRIENTS; PH VALUE; PHOSPHATES; SANITARY LANDFILLS; SOLID WASTES; ZINC; ALKANES; BIOCONVERSION; DATA; DIGESTION; DISPERSIONS; DISSOLUTION; ELEMENTS; FUELS; HYDROCARBONS; INFORMATION; MANAGEMENT; METALS; MIXTURES; NONMETALS; NUMERICAL DATA; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHORUS COMPOUNDS; PROCESSING; SEPARATION PROCESSES; SOLUTIONS; SYNTHESIS; TRANSITION ELEMENTS; WASTE DISPOSAL; WASTE MANAGEMENT; WASTE PROCESSING; WASTES 090122* -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989)