+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

The effect of municipal solid waste compost (MSW) on the replacement of sodium in sodic soil models



The effect of municipal solid waste compost (MSW) on the replacement of sodium in sodic soil models



Soil Science 169(8): 567-572



Compost extracts or intact compost suspensions, with or without CaCO3, were equilibrated with Na+-saturated cation exchange resin used as a model of sodic soil. A release of cations from the solid phases (compost or CaCO3) and subsequent exchange with Na+ was evaluated through the apparent deviation from electro-neutrality in the solution. (Electro neutrality is defined here as the deviation from an increase of Na compared with the decrease of the sum of other cations (Ca + Mg + K + NH4+) in the solution). This approach enables experimental evaluation of the contribution of solids, compost, or other organic amendments to the reclamation of sodic soils. The compost used contained 3.7 eq/kg of Ca, Mg, and K. About 50[percent] of the total amount of these potentially Na+-displacing ions in the compost were released during a 3-day incubation period and effectively replaced Na+. Compost suspension, unlike filtered compost extract, increased the release of Ca+2 from CaCO3 significantly. The release of cations from the compost seems to be faster than release from the CaCO3. Thus, the CaCO3 effect was detected in our experimental system primarily with low compost levels. However, the effect of the enhanced solubility of CaCO3 is most likely the dominant one under realistic levels of compost application. It is postulated that the compost particles may either release soluble or colloidal chelating agents or contain chelating or other cation-binding sites on the surfaces. It is also possible that the compost colloidal particles lead to raised dissolution of CaCO3, bind the Ca, and transfer the dissolved Ca ions onto the cation exchanger where they replace Na+. Application of MSW compost to sodic soils may raise the solubility of CaCO3 typically found in such soils and thus contribute to the reclamation of such soils. Reprinted by permission of the publisher.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 004350272

Download citation: RISBibTeXText

DOI: 10.1097/01.ss.0000138417.37793.7b


Related references

Comparison of source separated municipal solid waste compost and solid manure with and without fertilizer B effect on soil properties. Canadian Journal of Soil Science 79(4): 648, 1999

Comparison of bacteria from municipal solid waste compost and a Co-compost of municipal solid waste and sewage sludge. Abstracts of the General Meeting of the American Society for Microbiology 93: 371, 1993

Effect of enriched municipal solid waste compost application on soil available macronutrients in the rice field. Archives of Agronomy and Soil Science 53(5): 497-506, 2007

Effect of the addition of municipal solid waste compost on microbial biomass and enzyme activities in soil. Biology & Fertility of Soils 10(3): 221-226, 1990

Direct and residual effect of municipal solid waste compost on the lead content of soil and plants. 2008

Effect of amending soil with municipal solid waste compost on yield of bell pepper and eggplant. Hortscience 28(5): 103, 1993

Natural zeolite stabilizes sodium and boron in municipal solid waste compost. Geological Society of America 40.6, 2008

Effect of a waste stream component on the agronomic properties of municipal solid waste compost. Compost Science & Utilization 2(2): 75-87, 1994

Soil enzymatic response to addition of municipal solid-waste compost. Biology and fertility of soils0(4): 226-236, 1995

Remediation of chromium-polluted soil using municipal solid waste compost. Ying Yong Sheng Tai Xue Bao 13(2): 167-170, 2002

The effect of municipal solid waste compost application on soil water and water stress in irrigated corn. Compost Science and Utilization 8(3): 236-246, 2000

Influence of municipal solid waste compost on soil respiration, microbial biomass and dehydrogenase activity in a degraded soil. Man and soil at the Third Millennium Proceedings International Congress of the European Society for Soil Conservation, Valencia, Spain, 28 March 1 April, 2000 Volume 1: 1089-1096, 2002

Fertilisation of an urban park soil with municipal solid waste compost. Effects on soil properties and plant growth. Fresenius Environmental Bulletin 15(3): 200-206, 2006

Nitrogen availability and leaching from soil amended with municipal solid waste compost. Journal of environmental quality 28(4): 1074-1082, 1999

Impact of municipal solid waste compost on soil properties and cotton growth. Paper American Society of Agricultural Engineers ( 971004): 16 pp., 1997