Evaluation of Biobed Bio-Mixture from Olive Oil Mill Wastewater Treatment as a Soil Organic Amendment in a Circular Economy Context
This study, based on circular economy principles and sustainable development practices, aims to present the results of soil samples analysis after their mixture with a biobed bio-mixture of straw, soil and compost, used for two consecutive years as organic bio-filter of olive oil mill wastewater. So...
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MDPI AG
2022-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/14/7347 |
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| author | Vasiliki Kinigopoulou Evangelos Hatzigiannakis Athanasios Guitonas Efstathios K. Oikonomou Stefanos Stefanou Dionisios Gasparatos |
| author_facet | Vasiliki Kinigopoulou Evangelos Hatzigiannakis Athanasios Guitonas Efstathios K. Oikonomou Stefanos Stefanou Dionisios Gasparatos |
| author_sort | Vasiliki Kinigopoulou |
| collection | DOAJ |
| description | This study, based on circular economy principles and sustainable development practices, aims to present the results of soil samples analysis after their mixture with a biobed bio-mixture of straw, soil and compost, used for two consecutive years as organic bio-filter of olive oil mill wastewater. So far, exhausted bio-mixtures used in biobeds to minimize pesticide point-source contamination turned out to contain residues of pesticides, and they are considered hazardous wastes; thus, they require special treatment before their disposal. Contrariwise, saturated bio-mixtures from bio-bed systems utilized for olive mill wastewater (OMWW) treatment not only do not require any special treatment before their final disposal but also can be exploited as a soil amendment. To this end, the effects of the used bio-mixture application in three different proportions as a soil amendment on the physical and chemical properties of medium-texture soil were investigated. The application of water simulating a typical irrigation period during a growing season took place. Upon completion of the water application, soil samples were collected from two different depths of the columns and analyzed, and leachates collected from the columns were also analyzed. Soil texture, organic matter, calcium carbonate, electrical conductivity (EC), pH, total nitrogen, nitrates, nitrites, ammonium, available phosphorus, exchangeable potassium, sodium, calcium and magnesium, exchangeable sodium percentage (ESP), cation exchange capacity (CEC), available iron, manganese, copper, zinc and boron were monitored in the soil samples as indexes of potential soil amendment, and EC, pH, nitrates, potassium, sodium, calcium, magnesium, sodium adsorption ratio (SAR), total hardness, iron, manganese, copper, zinc and boron were monitored in the leachates as indexes of potential groundwater contamination.The study demonstrated the effective use of saturated bio-mixture as an organic soil amendment, while the impact of selected amendments on groundwater was the minimum. |
| first_indexed | 2024-03-09T03:42:18Z |
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| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T03:42:18Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-400aa6cc786b4e5ca97717f9769276812023-12-03T14:38:08ZengMDPI AGApplied Sciences2076-34172022-07-011214734710.3390/app12147347Evaluation of Biobed Bio-Mixture from Olive Oil Mill Wastewater Treatment as a Soil Organic Amendment in a Circular Economy ContextVasiliki Kinigopoulou0Evangelos Hatzigiannakis1Athanasios Guitonas2Efstathios K. Oikonomou3Stefanos Stefanou4Dionisios Gasparatos5Soil & Water Resources Institute, Hellenic Agricultural Organization “DEMETER”, Sindos, 574 00 Thessaloniki, GreeceSoil & Water Resources Institute, Hellenic Agricultural Organization “DEMETER”, Sindos, 574 00 Thessaloniki, GreeceFaculty of Rural and Surveying Engineering, Aristotle University of Thessaloniki, 541 24 Thessaloniki, GreeceFaculty of Rural and Surveying Engineering, Aristotle University of Thessaloniki, 541 24 Thessaloniki, GreeceDepartment of Agriculture, School of Geotechnical Sciences, International Hellenic University, Sindos, 574 00 Thessaloniki, GreeceDepartment of Natural Recourses Management and Agricultural Engineering, Agricultural University of Athens, 118 55 Athens, GreeceThis study, based on circular economy principles and sustainable development practices, aims to present the results of soil samples analysis after their mixture with a biobed bio-mixture of straw, soil and compost, used for two consecutive years as organic bio-filter of olive oil mill wastewater. So far, exhausted bio-mixtures used in biobeds to minimize pesticide point-source contamination turned out to contain residues of pesticides, and they are considered hazardous wastes; thus, they require special treatment before their disposal. Contrariwise, saturated bio-mixtures from bio-bed systems utilized for olive mill wastewater (OMWW) treatment not only do not require any special treatment before their final disposal but also can be exploited as a soil amendment. To this end, the effects of the used bio-mixture application in three different proportions as a soil amendment on the physical and chemical properties of medium-texture soil were investigated. The application of water simulating a typical irrigation period during a growing season took place. Upon completion of the water application, soil samples were collected from two different depths of the columns and analyzed, and leachates collected from the columns were also analyzed. Soil texture, organic matter, calcium carbonate, electrical conductivity (EC), pH, total nitrogen, nitrates, nitrites, ammonium, available phosphorus, exchangeable potassium, sodium, calcium and magnesium, exchangeable sodium percentage (ESP), cation exchange capacity (CEC), available iron, manganese, copper, zinc and boron were monitored in the soil samples as indexes of potential soil amendment, and EC, pH, nitrates, potassium, sodium, calcium, magnesium, sodium adsorption ratio (SAR), total hardness, iron, manganese, copper, zinc and boron were monitored in the leachates as indexes of potential groundwater contamination.The study demonstrated the effective use of saturated bio-mixture as an organic soil amendment, while the impact of selected amendments on groundwater was the minimum.https://www.mdpi.com/2076-3417/12/14/7347bio-mixturebiobedsoil amendmentolive mill wastewatercircular economy |
| spellingShingle | Vasiliki Kinigopoulou Evangelos Hatzigiannakis Athanasios Guitonas Efstathios K. Oikonomou Stefanos Stefanou Dionisios Gasparatos Evaluation of Biobed Bio-Mixture from Olive Oil Mill Wastewater Treatment as a Soil Organic Amendment in a Circular Economy Context Applied Sciences bio-mixture biobed soil amendment olive mill wastewater circular economy |
| title | Evaluation of Biobed Bio-Mixture from Olive Oil Mill Wastewater Treatment as a Soil Organic Amendment in a Circular Economy Context |
| title_full | Evaluation of Biobed Bio-Mixture from Olive Oil Mill Wastewater Treatment as a Soil Organic Amendment in a Circular Economy Context |
| title_fullStr | Evaluation of Biobed Bio-Mixture from Olive Oil Mill Wastewater Treatment as a Soil Organic Amendment in a Circular Economy Context |
| title_full_unstemmed | Evaluation of Biobed Bio-Mixture from Olive Oil Mill Wastewater Treatment as a Soil Organic Amendment in a Circular Economy Context |
| title_short | Evaluation of Biobed Bio-Mixture from Olive Oil Mill Wastewater Treatment as a Soil Organic Amendment in a Circular Economy Context |
| title_sort | evaluation of biobed bio mixture from olive oil mill wastewater treatment as a soil organic amendment in a circular economy context |
| topic | bio-mixture biobed soil amendment olive mill wastewater circular economy |
| url | https://www.mdpi.com/2076-3417/12/14/7347 |
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