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Organic By-Products For Sustainable Soil Remediation - The Effect Of 3 Different Amendments On The Degradation Of Diesel Fuel In A Tropical Ultisol.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Ecotechnology and Sustainable Building Engineering. (Ecotechnology group)ORCID iD: 0000-0001-5796-6672
Mid Sweden University, Faculty of Science, Technology and Media, Department of Ecotechnology and Sustainable Building Engineering. (Ekoteknik och Miljövetenskap)ORCID iD: 0000-0002-3204-4089
2014 (English)In: ECO-TECH 2014 / [ed] Fabio Kaczala, Jelena Lundström, Joacim Rosenlund and William Hogland, Kalmar: Linnaeus University , 2014Conference paper, Abstract (Other academic)
Abstract [en]

In many tropical developing countries, economic incentives are small for soil remediation to take place. Such locations demand special strategies that are energy-efficient, locally adapted and economic. In situ technologies are appealing where energy and material costs are more limiting than the time factor. One potentially sustainable and economic way to enhance the self-organizing capacity of soil ecosystems is by applications of locally available organic by-products to stimulate the polluted ecosystem´s inherent capacity to heal by utilising the embodied energy of the organic pollutant itself, as an energy source for the necessary biochemical transformations. Tropical climate is favourable for biodegradation but many tropical soils are rich in clay which can inhibit the bioavailability of the pollutant and reduce biodegradation kinetics.  A pilot scale experiment was performed in order to assess the capability of three amendments based on by-products; whey, pyroligneous acid and compost tea, to enhance degradation of diesel in ultisol. Biweekly applications of 6 mL whey kg-1 soilsignificantly increased the degradation rate but no positive effect on degradation was found of any of the other amendments.

Place, publisher, year, edition, pages
Kalmar: Linnaeus University , 2014.
Keyword [en]
Bioremediation, Self-design, Whey, Pyroligneous acid, Compost teas, Tropical developing countries
National Category
Environmental Sciences
URN: urn:nbn:se:miun:diva-23582OAI: diva2:768280
9th International conference on establishment and cooperation between companies and institutions in the Nordic countries, the Baltic Sea region and the world, Linnaeus ECO-TECH, Kalmar, Sweden, November 24-26, 2014
Hållbara utvecklingsprocesser (HUP)
Available from: 2014-12-03 Created: 2014-12-03 Last updated: 2015-07-13Bibliographically approved
In thesis
1. Appropriate Technologies for Soil Remediation in Low Prioritized Region: Developing Countries and Sparsely Populated Regions
Open this publication in new window or tab >>Appropriate Technologies for Soil Remediation in Low Prioritized Region: Developing Countries and Sparsely Populated Regions
2015 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Contaminated sites in low prioritized regions demand remediation technologies that are cost- and energy-effective and locally adapted. Parameters such as the time frame during which bioremediation degradation needs to occur may not be as restraining as in urban environments. This licentiate project aims to explore opportunities and constraints for appropriate soil remediation based on organic by-products in tropical developing countries and sparsely populated areas in industrial countries. Ecological Engineering and the Framework for Strategic Sustainable Development were explored as planning tools to steer bioremediation methods towards sustainability. The use of the five concepts of Ecological Engineering within the Framework for Strategic Sustainable Development can steer bioremediation in low prioritized regions towards sustainability. Pilot-scale and laboratory experiments were undertaken to evaluate the feasibility of such bioremediation methods. Experiments carried out at the experiment station in Chontales, Nicaragua showed some promising results, but also revealed problems associated with the clay rich soils, which are typical for tropical regions. Treatment of diesel contaminated ultisol with 6 mL whey kg-1 dw in a pilot-scale experiment considerably increased the degradation rate of diesel constituents, but no effects on the degradation rates were observed after treatment with compost tea or pyroligneous acid.The soil columns study suggests that despite a favorable particle size distribution for microbial transport, the sandy loam retained a greater fraction of the microorganisms present in the ACT in the top 10 cm than the clay loam, presumably because the lower bulk density and higher SOM in the clay loam aided transport and growth of microorganisms.

Place, publisher, year, edition, pages
Östersund: Mid Sweden University, 2015. 109 p.
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 119
Soil pollution, Bioremediation, Ecotechnology, Framework for Strategic Sustainable Development, Ecological Engineering, Industrial Ecology Developing Countries, Sparsely Populated Regions, Nicaragua
National Category
Other Earth and Related Environmental Sciences
urn:nbn:se:miun:diva-25300 (URN)978-91-88025-31-9 (ISBN)
Available from: 2015-07-13 Created: 2015-06-26 Last updated: 2015-11-23Bibliographically approved

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