Remediation of Pb-contaminated soil using biochar-based slow-release P fertilizer and biomonitoring employing bioindicators
Abstract Soil contamination by Pb can result from different anthropogenic sources such as lead-based paints, gasoline, pesticides, coal burning, mining, among others. This work aimed to evaluate the potential of P-loaded biochar (Biochar-based slow-release P fertilizer) to remediate a Pb-contaminate...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-01-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-27043-8 |
| _version_ | 1811171679874842624 |
|---|---|
| author | María Paula Acosta-Luque Julián E. López Nancy Henao Daniela Zapata Juan C. Giraldo Juan F. Saldarriaga |
| author_facet | María Paula Acosta-Luque Julián E. López Nancy Henao Daniela Zapata Juan C. Giraldo Juan F. Saldarriaga |
| author_sort | María Paula Acosta-Luque |
| collection | DOAJ |
| description | Abstract Soil contamination by Pb can result from different anthropogenic sources such as lead-based paints, gasoline, pesticides, coal burning, mining, among others. This work aimed to evaluate the potential of P-loaded biochar (Biochar-based slow-release P fertilizer) to remediate a Pb-contaminated soil. In addition, we aim to propose a biomonitoring alternative after soil remediation. First, rice husk-derived biochar was obtained at different temperatures (450, 500, 550, and 600 °C) (raw biochars). Then, part of the resulting material was activated. Later, the raw biochars and activated biochars were immersed in a saturated KH2PO4 solution to produce P-loaded biochars. The ability of materials to immobilize Pb and increase the bioavailability of P in the soil was evaluated by an incubation test. The materials were incorporated into doses of 0.5, 1.0, and 2.0%. After 45 days, soil samples were taken to biomonitor the remediation process using two bioindicators: a phytotoxicity test and enzyme soil activity. Activated P-loaded biochar produced at 500 °C has been found to present the best conditions for soil Pb remediation. This material significantly reduced the bioavailability of Pb and increased the bioavailability of P. The phytotoxicity test and the soil enzymatic activity were significantly correlated with the decrease in bioavailable Pb but not with the increase in bioavailable P. Biomonitoring using the phytotoxicity test is a promising alternative for the evaluation of soils after remediation processes. |
| first_indexed | 2024-04-10T17:19:05Z |
| format | Article |
| id | doaj.art-1d1f6b3ecf174a5dbcab19fde2c859fc |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-10T17:19:05Z |
| publishDate | 2023-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-1d1f6b3ecf174a5dbcab19fde2c859fc2023-02-05T12:12:20ZengNature PortfolioScientific Reports2045-23222023-01-0113111210.1038/s41598-022-27043-8Remediation of Pb-contaminated soil using biochar-based slow-release P fertilizer and biomonitoring employing bioindicatorsMaría Paula Acosta-Luque0Julián E. López1Nancy Henao2Daniela Zapata3Juan C. Giraldo4Juan F. Saldarriaga5Department of Civil and Environmental Engineering, Universidad de los AndesFacultad de Arquitectura e Ingeniería, Institución Universitaria Colegio Mayor de AntioquiaDepartment of Civil and Environmental Engineering, Universidad de los AndesFaculty of Engineering, Universidad de MedellínFacultad de Arquitectura e Ingeniería, Institución Universitaria Colegio Mayor de AntioquiaDepartment of Civil and Environmental Engineering, Universidad de los AndesAbstract Soil contamination by Pb can result from different anthropogenic sources such as lead-based paints, gasoline, pesticides, coal burning, mining, among others. This work aimed to evaluate the potential of P-loaded biochar (Biochar-based slow-release P fertilizer) to remediate a Pb-contaminated soil. In addition, we aim to propose a biomonitoring alternative after soil remediation. First, rice husk-derived biochar was obtained at different temperatures (450, 500, 550, and 600 °C) (raw biochars). Then, part of the resulting material was activated. Later, the raw biochars and activated biochars were immersed in a saturated KH2PO4 solution to produce P-loaded biochars. The ability of materials to immobilize Pb and increase the bioavailability of P in the soil was evaluated by an incubation test. The materials were incorporated into doses of 0.5, 1.0, and 2.0%. After 45 days, soil samples were taken to biomonitor the remediation process using two bioindicators: a phytotoxicity test and enzyme soil activity. Activated P-loaded biochar produced at 500 °C has been found to present the best conditions for soil Pb remediation. This material significantly reduced the bioavailability of Pb and increased the bioavailability of P. The phytotoxicity test and the soil enzymatic activity were significantly correlated with the decrease in bioavailable Pb but not with the increase in bioavailable P. Biomonitoring using the phytotoxicity test is a promising alternative for the evaluation of soils after remediation processes.https://doi.org/10.1038/s41598-022-27043-8 |
| spellingShingle | María Paula Acosta-Luque Julián E. López Nancy Henao Daniela Zapata Juan C. Giraldo Juan F. Saldarriaga Remediation of Pb-contaminated soil using biochar-based slow-release P fertilizer and biomonitoring employing bioindicators Scientific Reports |
| title | Remediation of Pb-contaminated soil using biochar-based slow-release P fertilizer and biomonitoring employing bioindicators |
| title_full | Remediation of Pb-contaminated soil using biochar-based slow-release P fertilizer and biomonitoring employing bioindicators |
| title_fullStr | Remediation of Pb-contaminated soil using biochar-based slow-release P fertilizer and biomonitoring employing bioindicators |
| title_full_unstemmed | Remediation of Pb-contaminated soil using biochar-based slow-release P fertilizer and biomonitoring employing bioindicators |
| title_short | Remediation of Pb-contaminated soil using biochar-based slow-release P fertilizer and biomonitoring employing bioindicators |
| title_sort | remediation of pb contaminated soil using biochar based slow release p fertilizer and biomonitoring employing bioindicators |
| url | https://doi.org/10.1038/s41598-022-27043-8 |
| work_keys_str_mv | AT mariapaulaacostaluque remediationofpbcontaminatedsoilusingbiocharbasedslowreleasepfertilizerandbiomonitoringemployingbioindicators AT julianelopez remediationofpbcontaminatedsoilusingbiocharbasedslowreleasepfertilizerandbiomonitoringemployingbioindicators AT nancyhenao remediationofpbcontaminatedsoilusingbiocharbasedslowreleasepfertilizerandbiomonitoringemployingbioindicators AT danielazapata remediationofpbcontaminatedsoilusingbiocharbasedslowreleasepfertilizerandbiomonitoringemployingbioindicators AT juancgiraldo remediationofpbcontaminatedsoilusingbiocharbasedslowreleasepfertilizerandbiomonitoringemployingbioindicators AT juanfsaldarriaga remediationofpbcontaminatedsoilusingbiocharbasedslowreleasepfertilizerandbiomonitoringemployingbioindicators |