Role of organic matter on electroosmotic properties and ionic modification of organic soils
Organic soils represent accumulations of disintegrated plant remains that have been preserved under condition of incomplete aeration and high water content. Using electrokinetic (EK) techniques to improve organic soils entails evaluating factors that define geoenvironmental behavior of organic soils...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English English |
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2009
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| Online Access: | http://psasir.upm.edu.my/id/eprint/4696/1/Role%20of%20organic%20matter%20on%20electroosmotic%20properties%20and%20ionic%20modification%20of%20organic%20soils.pdf |
| _version_ | 1796966818630336512 |
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| author | Asadi, Afshin Kim Huat, Bujang Musa, Mohamed Hanafi Mohammed, Thamer Ahmed Shariatmadari, Nader |
| author_facet | Asadi, Afshin Kim Huat, Bujang Musa, Mohamed Hanafi Mohammed, Thamer Ahmed Shariatmadari, Nader |
| author_sort | Asadi, Afshin |
| collection | UPM |
| description | Organic soils represent accumulations of disintegrated plant remains that have been preserved under condition of incomplete aeration and high water content. Using electrokinetic (EK) techniques to improve organic soils entails evaluating factors that define geoenvironmental behavior of organic soils. Electroosmotic properties were investigated to conceptualize EK phenomena. The results of the study showed that the zeta potential, specific surface area, water contents, and liquid limit (LL) increased as the organic content increased. The natural zeta potential of the organic soils varied from −11.2 to −20.8 mV according to the organic content, degree of humification, and soil pH. The negative charge in organic soils is highly pH dependent and surface charge is dropped to zero at pH 2.3 to 3.5. The greater degree of humification resulted in the higher zeta potential and lower pH at the iso-electric point. This paper also gives some insights on ionic modification, which is an innovative method that could be employed to change the water holding capacity of organic soils and its consistency. The Fe+3 ions had 20 to 30% pronounced effect on decreasing LL according to the organic content. Increasing the cation valence reduces the affinity of water to the organic soil surface and decreases LL as a major part of Atterberg’s consistency system. By the sound of peat and its environment, there is a great likelihood that EK techniques could be used to resolve peat’s difficulties from the geoenvironmental viewpoint. |
| first_indexed | 2024-03-06T07:04:48Z |
| format | Article |
| id | upm.eprints-4696 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-03-06T07:04:48Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | upm.eprints-46962015-11-26T08:20:58Z http://psasir.upm.edu.my/id/eprint/4696/ Role of organic matter on electroosmotic properties and ionic modification of organic soils Asadi, Afshin Kim Huat, Bujang Musa, Mohamed Hanafi Mohammed, Thamer Ahmed Shariatmadari, Nader Organic soils represent accumulations of disintegrated plant remains that have been preserved under condition of incomplete aeration and high water content. Using electrokinetic (EK) techniques to improve organic soils entails evaluating factors that define geoenvironmental behavior of organic soils. Electroosmotic properties were investigated to conceptualize EK phenomena. The results of the study showed that the zeta potential, specific surface area, water contents, and liquid limit (LL) increased as the organic content increased. The natural zeta potential of the organic soils varied from −11.2 to −20.8 mV according to the organic content, degree of humification, and soil pH. The negative charge in organic soils is highly pH dependent and surface charge is dropped to zero at pH 2.3 to 3.5. The greater degree of humification resulted in the higher zeta potential and lower pH at the iso-electric point. This paper also gives some insights on ionic modification, which is an innovative method that could be employed to change the water holding capacity of organic soils and its consistency. The Fe+3 ions had 20 to 30% pronounced effect on decreasing LL according to the organic content. Increasing the cation valence reduces the affinity of water to the organic soil surface and decreases LL as a major part of Atterberg’s consistency system. By the sound of peat and its environment, there is a great likelihood that EK techniques could be used to resolve peat’s difficulties from the geoenvironmental viewpoint. 2009 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/4696/1/Role%20of%20organic%20matter%20on%20electroosmotic%20properties%20and%20ionic%20modification%20of%20organic%20soils.pdf Asadi, Afshin and Kim Huat, Bujang and Musa, Mohamed Hanafi and Mohammed, Thamer Ahmed and Shariatmadari, Nader (2009) Role of organic matter on electroosmotic properties and ionic modification of organic soils. Geosciences Journal, 13 (2). pp. 175-181. ISSN 1226-4806 http://www.springerlink.com/content/82468952220j2216/ 10.1007/s12303-009-0017-1 English |
| spellingShingle | Asadi, Afshin Kim Huat, Bujang Musa, Mohamed Hanafi Mohammed, Thamer Ahmed Shariatmadari, Nader Role of organic matter on electroosmotic properties and ionic modification of organic soils |
| title | Role of organic matter on electroosmotic properties and ionic modification of organic soils |
| title_full | Role of organic matter on electroosmotic properties and ionic modification of organic soils |
| title_fullStr | Role of organic matter on electroosmotic properties and ionic modification of organic soils |
| title_full_unstemmed | Role of organic matter on electroosmotic properties and ionic modification of organic soils |
| title_short | Role of organic matter on electroosmotic properties and ionic modification of organic soils |
| title_sort | role of organic matter on electroosmotic properties and ionic modification of organic soils |
| url | http://psasir.upm.edu.my/id/eprint/4696/1/Role%20of%20organic%20matter%20on%20electroosmotic%20properties%20and%20ionic%20modification%20of%20organic%20soils.pdf |
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