Effects of moisture content and soil additions on physical properties and transport phenomena for compost windrow design

A. C. Srebro, K. A. Malinska, E. D. White, Joseph Manuel Sr Perez, Thomas Lehman Richard

Research output: Contribution to conferencePaper

Abstract

Composting has been used for over a decade for bioremediation of explosives, pesticides, and various petrochemical and organic compounds. When these contaminants are present in soil, the soil itself can be added directly to the compost piles. Because the addition of soil changes the physical properties of the compost matrix in a way that affects the proper functioning of biological activity within the pile, appropriate mixture ratios are critical. This study uses a fundamental engineering approach to characterize and predict the physical properties and transport phenomena of several soil:compost blends at various moisture and compaction levels for successful windrow design. The physical properties examined in this study were permeability, air-filled porosity, and mechanical strength. A baseline compost matrix composed primarily of food waste, manure, leaves and wood chips was used as a control. Soil was added to this compost in ratios of 20:80 and 50:50, based on dry weights. The physical properties mentioned above were measured for these soil:compost mixes at approximately 25%, 45% and 65% moisture contents (wet basis). Permeability and air-filled porosity were measured at various levels of compaction, ranging from 0 to 21.7 kN m-2. Results show that moisture content has a larger effect on permeability, air-filled porosity, and mechanical strength than soil content. When moisture content increases, permeability, air-filled porosity, and mechanical strength decrease. Soil additions affect these properties to a lesser extent. In general, it was found that the amount of soil that can be added to a compost mixture decreases with increasing moisture content.

Original languageEnglish (US)
StatePublished - Dec 1 2007
EventInternational Symposium on Air Quality and Waste Management for Agriculture - Broomfield, CO, United States
Duration: Sep 16 2007Sep 19 2007

Other

OtherInternational Symposium on Air Quality and Waste Management for Agriculture
CountryUnited States
CityBroomfield, CO
Period9/16/079/19/07

Fingerprint

compost
composts
physical properties
moisture content
Moisture
Physical properties
physical property
water content
Soils
air permeability
porosity
Air permeability
soil
permeability
Porosity
air
Strength of materials
compaction
pile
Piles

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Pollution
  • Waste Management and Disposal

Cite this

Srebro, A. C., Malinska, K. A., White, E. D., Perez, J. M. S., & Richard, T. L. (2007). Effects of moisture content and soil additions on physical properties and transport phenomena for compost windrow design. Paper presented at International Symposium on Air Quality and Waste Management for Agriculture, Broomfield, CO, United States.
Srebro, A. C. ; Malinska, K. A. ; White, E. D. ; Perez, Joseph Manuel Sr ; Richard, Thomas Lehman. / Effects of moisture content and soil additions on physical properties and transport phenomena for compost windrow design. Paper presented at International Symposium on Air Quality and Waste Management for Agriculture, Broomfield, CO, United States.
@conference{9e3e797f737949649b72426d780876af,
title = "Effects of moisture content and soil additions on physical properties and transport phenomena for compost windrow design",
abstract = "Composting has been used for over a decade for bioremediation of explosives, pesticides, and various petrochemical and organic compounds. When these contaminants are present in soil, the soil itself can be added directly to the compost piles. Because the addition of soil changes the physical properties of the compost matrix in a way that affects the proper functioning of biological activity within the pile, appropriate mixture ratios are critical. This study uses a fundamental engineering approach to characterize and predict the physical properties and transport phenomena of several soil:compost blends at various moisture and compaction levels for successful windrow design. The physical properties examined in this study were permeability, air-filled porosity, and mechanical strength. A baseline compost matrix composed primarily of food waste, manure, leaves and wood chips was used as a control. Soil was added to this compost in ratios of 20:80 and 50:50, based on dry weights. The physical properties mentioned above were measured for these soil:compost mixes at approximately 25{\%}, 45{\%} and 65{\%} moisture contents (wet basis). Permeability and air-filled porosity were measured at various levels of compaction, ranging from 0 to 21.7 kN m-2. Results show that moisture content has a larger effect on permeability, air-filled porosity, and mechanical strength than soil content. When moisture content increases, permeability, air-filled porosity, and mechanical strength decrease. Soil additions affect these properties to a lesser extent. In general, it was found that the amount of soil that can be added to a compost mixture decreases with increasing moisture content.",
author = "Srebro, {A. C.} and Malinska, {K. A.} and White, {E. D.} and Perez, {Joseph Manuel Sr} and Richard, {Thomas Lehman}",
year = "2007",
month = "12",
day = "1",
language = "English (US)",
note = "International Symposium on Air Quality and Waste Management for Agriculture ; Conference date: 16-09-2007 Through 19-09-2007",

}

Srebro, AC, Malinska, KA, White, ED, Perez, JMS & Richard, TL 2007, 'Effects of moisture content and soil additions on physical properties and transport phenomena for compost windrow design', Paper presented at International Symposium on Air Quality and Waste Management for Agriculture, Broomfield, CO, United States, 9/16/07 - 9/19/07.

Effects of moisture content and soil additions on physical properties and transport phenomena for compost windrow design. / Srebro, A. C.; Malinska, K. A.; White, E. D.; Perez, Joseph Manuel Sr; Richard, Thomas Lehman.

2007. Paper presented at International Symposium on Air Quality and Waste Management for Agriculture, Broomfield, CO, United States.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Effects of moisture content and soil additions on physical properties and transport phenomena for compost windrow design

AU - Srebro, A. C.

AU - Malinska, K. A.

AU - White, E. D.

AU - Perez, Joseph Manuel Sr

AU - Richard, Thomas Lehman

PY - 2007/12/1

Y1 - 2007/12/1

N2 - Composting has been used for over a decade for bioremediation of explosives, pesticides, and various petrochemical and organic compounds. When these contaminants are present in soil, the soil itself can be added directly to the compost piles. Because the addition of soil changes the physical properties of the compost matrix in a way that affects the proper functioning of biological activity within the pile, appropriate mixture ratios are critical. This study uses a fundamental engineering approach to characterize and predict the physical properties and transport phenomena of several soil:compost blends at various moisture and compaction levels for successful windrow design. The physical properties examined in this study were permeability, air-filled porosity, and mechanical strength. A baseline compost matrix composed primarily of food waste, manure, leaves and wood chips was used as a control. Soil was added to this compost in ratios of 20:80 and 50:50, based on dry weights. The physical properties mentioned above were measured for these soil:compost mixes at approximately 25%, 45% and 65% moisture contents (wet basis). Permeability and air-filled porosity were measured at various levels of compaction, ranging from 0 to 21.7 kN m-2. Results show that moisture content has a larger effect on permeability, air-filled porosity, and mechanical strength than soil content. When moisture content increases, permeability, air-filled porosity, and mechanical strength decrease. Soil additions affect these properties to a lesser extent. In general, it was found that the amount of soil that can be added to a compost mixture decreases with increasing moisture content.

AB - Composting has been used for over a decade for bioremediation of explosives, pesticides, and various petrochemical and organic compounds. When these contaminants are present in soil, the soil itself can be added directly to the compost piles. Because the addition of soil changes the physical properties of the compost matrix in a way that affects the proper functioning of biological activity within the pile, appropriate mixture ratios are critical. This study uses a fundamental engineering approach to characterize and predict the physical properties and transport phenomena of several soil:compost blends at various moisture and compaction levels for successful windrow design. The physical properties examined in this study were permeability, air-filled porosity, and mechanical strength. A baseline compost matrix composed primarily of food waste, manure, leaves and wood chips was used as a control. Soil was added to this compost in ratios of 20:80 and 50:50, based on dry weights. The physical properties mentioned above were measured for these soil:compost mixes at approximately 25%, 45% and 65% moisture contents (wet basis). Permeability and air-filled porosity were measured at various levels of compaction, ranging from 0 to 21.7 kN m-2. Results show that moisture content has a larger effect on permeability, air-filled porosity, and mechanical strength than soil content. When moisture content increases, permeability, air-filled porosity, and mechanical strength decrease. Soil additions affect these properties to a lesser extent. In general, it was found that the amount of soil that can be added to a compost mixture decreases with increasing moisture content.

UR - http://www.scopus.com/inward/record.url?scp=56349152716&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=56349152716&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:56349152716

ER -

Srebro AC, Malinska KA, White ED, Perez JMS, Richard TL. Effects of moisture content and soil additions on physical properties and transport phenomena for compost windrow design. 2007. Paper presented at International Symposium on Air Quality and Waste Management for Agriculture, Broomfield, CO, United States.