Synergistic Effects of Compost and Biochar on Soil Health and Heavy Metal Stabilization in Contaminated Mine Soils
Phytoremediation strategies present promising approaches for mitigating metal contamination in soils. This study examines the effectiveness of compost and biochar amendments, applied separately or in combination, in altering the properties of sandy mining waste soils (Sw) and affecting levels of met...
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MDPI AG
2025-05-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/15/6/1295 |
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| author | Yassine Chafik Marta Sena-Velez Hugo Henaut Mustapha Missbah El Idrissi Sabine Carpin Sylvain Bourgerie Domenico Morabito |
| author_facet | Yassine Chafik Marta Sena-Velez Hugo Henaut Mustapha Missbah El Idrissi Sabine Carpin Sylvain Bourgerie Domenico Morabito |
| author_sort | Yassine Chafik |
| collection | DOAJ |
| description | Phytoremediation strategies present promising approaches for mitigating metal contamination in soils. This study examines the effectiveness of compost and biochar amendments, applied separately or in combination, in altering the properties of sandy mining waste soils (Sw) and affecting levels of metallic trace elements (MTEs). The research evaluates changes in soil physicochemical parameters, metal concentrations in soil pore water (SPW), and metal accumulation in <i>Phaseolus vulgaris</i>. Compost and biochar addition significantly affected SPW pH, which remained alkaline, while increasing SPW electrical conductivity (EC). A treatment combining 20% compost and 2% biochar (SwC20B2) enhanced soil enzymatic activities, with the highest values observed for FDA and ALP activities. Metal availability in the SPW appeared higher on D(0) compared to D(12), with notable reductions in Pb and Zn concentrations observed in the SwC20B2 treatment. Despite this decline, metal accumulation in plant shoots did not significantly differ from that in plants grown in unamended Sw, although all plants exhibited substantial growth. The minor decrease in SPW pH, likely due to compost, may have enhanced metal mobility at D(0). Notably, SPW Pb and Zn concentrations increased with higher compost rates, with SwC20B2 registering the highest Pb and Zn. Although these amendments did not directly alleviate metal mobility, they show potential for use in phytostabilization strategies by using suitable plant species. |
| format | Article |
| id | doaj-art-8bb549562f5f48909ff6343debfc0e72 |
| institution | Kabale University |
| issn | 2073-4395 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
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| series | Agronomy |
| spelling | doaj-art-8bb549562f5f48909ff6343debfc0e722025-08-20T03:26:16ZengMDPI AGAgronomy2073-43952025-05-01156129510.3390/agronomy15061295Synergistic Effects of Compost and Biochar on Soil Health and Heavy Metal Stabilization in Contaminated Mine SoilsYassine Chafik0Marta Sena-Velez1Hugo Henaut2Mustapha Missbah El Idrissi3Sabine Carpin4Sylvain Bourgerie5Domenico Morabito6Laboratory of Physiology, Ecology and Environment (P2E), UR 1207/USC INRAE 1328, Faculty of Science &Technology, University of Orleans, Rue de Chartres, 45067 Orleans Cedex 2, FranceLaboratory of Physiology, Ecology and Environment (P2E), UR 1207/USC INRAE 1328, Faculty of Science &Technology, University of Orleans, Rue de Chartres, 45067 Orleans Cedex 2, FranceLaboratory of Physiology, Ecology and Environment (P2E), UR 1207/USC INRAE 1328, Faculty of Science &Technology, University of Orleans, Rue de Chartres, 45067 Orleans Cedex 2, FranceCentre de Biotechnologies Végétales et Microbiennes, Biodiversité et Environnement, Faculty of Sciences, Mohammed V University, 4, Ibn Battouta Avenue, Agdal, Rabat 10080, MoroccoLaboratory of Physiology, Ecology and Environment (P2E), UR 1207/USC INRAE 1328, Faculty of Science &Technology, University of Orleans, Rue de Chartres, 45067 Orleans Cedex 2, FranceLaboratory of Physiology, Ecology and Environment (P2E), UR 1207/USC INRAE 1328, Faculty of Science &Technology, University of Orleans, Rue de Chartres, 45067 Orleans Cedex 2, FranceLaboratory of Physiology, Ecology and Environment (P2E), UR 1207/USC INRAE 1328, Faculty of Science &Technology, University of Orleans, Rue de Chartres, 45067 Orleans Cedex 2, FrancePhytoremediation strategies present promising approaches for mitigating metal contamination in soils. This study examines the effectiveness of compost and biochar amendments, applied separately or in combination, in altering the properties of sandy mining waste soils (Sw) and affecting levels of metallic trace elements (MTEs). The research evaluates changes in soil physicochemical parameters, metal concentrations in soil pore water (SPW), and metal accumulation in <i>Phaseolus vulgaris</i>. Compost and biochar addition significantly affected SPW pH, which remained alkaline, while increasing SPW electrical conductivity (EC). A treatment combining 20% compost and 2% biochar (SwC20B2) enhanced soil enzymatic activities, with the highest values observed for FDA and ALP activities. Metal availability in the SPW appeared higher on D(0) compared to D(12), with notable reductions in Pb and Zn concentrations observed in the SwC20B2 treatment. Despite this decline, metal accumulation in plant shoots did not significantly differ from that in plants grown in unamended Sw, although all plants exhibited substantial growth. The minor decrease in SPW pH, likely due to compost, may have enhanced metal mobility at D(0). Notably, SPW Pb and Zn concentrations increased with higher compost rates, with SwC20B2 registering the highest Pb and Zn. Although these amendments did not directly alleviate metal mobility, they show potential for use in phytostabilization strategies by using suitable plant species.https://www.mdpi.com/2073-4395/15/6/1295biocharcompostsoil pore watermetal availabilitybioassay |
| spellingShingle | Yassine Chafik Marta Sena-Velez Hugo Henaut Mustapha Missbah El Idrissi Sabine Carpin Sylvain Bourgerie Domenico Morabito Synergistic Effects of Compost and Biochar on Soil Health and Heavy Metal Stabilization in Contaminated Mine Soils Agronomy biochar compost soil pore water metal availability bioassay |
| title | Synergistic Effects of Compost and Biochar on Soil Health and Heavy Metal Stabilization in Contaminated Mine Soils |
| title_full | Synergistic Effects of Compost and Biochar on Soil Health and Heavy Metal Stabilization in Contaminated Mine Soils |
| title_fullStr | Synergistic Effects of Compost and Biochar on Soil Health and Heavy Metal Stabilization in Contaminated Mine Soils |
| title_full_unstemmed | Synergistic Effects of Compost and Biochar on Soil Health and Heavy Metal Stabilization in Contaminated Mine Soils |
| title_short | Synergistic Effects of Compost and Biochar on Soil Health and Heavy Metal Stabilization in Contaminated Mine Soils |
| title_sort | synergistic effects of compost and biochar on soil health and heavy metal stabilization in contaminated mine soils |
| topic | biochar compost soil pore water metal availability bioassay |
| url | https://www.mdpi.com/2073-4395/15/6/1295 |
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