Use of activated rice husk biochar for the removal of metals and microorganisms from treated leachates from landfills

Serrano, María F.; López, Julián E.; Saldarriaga, Juan F.

doi:10.1007/s10163-023-01762-0

Cited by 6 publications

(4 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For this purpose, the material was prepared by drying and grinding the biomasses. The prepared total biomass samples were subjected to a pyrolysis process at 500 °C with a residence time of 10–15 min in accordance with previous works published by the research group and in which a methodology has been developed to obtain biochar. ,, On the other hand, half of the material was activated with KOH in a 1:1 ratio, left in contact for a period of 24 h, and then thermally activated at a temperature of 500 °C with a heating rate of 5 °C/min and a residence time of 2 h. ,− The resulting biochar was impregnated with 4000 mg/L potassium phosphate to mirror saturation, left in contact for 45 min, filtered, and dried at 60 °C for 24 h . Four types of biochar were obtained from the above process: activated coffee husk biochar (BAC), non-activated coffee husk biochar (BSAC), activated sugar cane leaf biochar (BAA), and nonactivated sugar cane leaf biochar (BSAA).…”

Section: Methodsmentioning

confidence: 99%

Phosphorus-Loaded Biochar-Assisted Phytoremediation to Immobilize Cadmium, Chromium, and Lead in Soils

Serrano,

López,

Henao

et al. 2024

ACS Omega

Self Cite

View full text Add to dashboard Cite

Soil contamination with heavy metals (HM) poses significant challenges to food security and public health, requiring the exploration of effective remediation strategies. This study aims to evaluate the remediation process of soils contaminated with Cd, Cr, and Pb using Lolium perenne assisted by four types of biochar: (i) activated coffee husk biochar (BAC), (ii) nonactivated biochar coffee husk (BSAC), (iii) activated sugar cane leaf biochar (BAA), and (iv) nonactivated biochar sugar cane leaf (BSAA). Biochar, loaded with phosphorus (P), was applied to soils contaminated with Cd, Cr, and Pb. L. perenne seedlings, averaging 2 cm in height, were planted. The bioavailability of P and heavy metals (HM) was monitored every 15 days until day 45, when the seedlings reached an average height of 25 cm. At day 45, plant harvesting was conducted and stems and roots were separated to determine metal concentrations in both plant parts and the soil. The study shows that the combined application of biochar and L. perenne positively influences the physicochemical properties of the soil, resulting in an elevation of pH and electrical conductivity (EC). The utilization of biochar contributes to an 11.6% enhancement in the retention of HM in plant organs. The achieved bioavailability of heavy metals in the soil was maintained at levels of less than 1 mg/kg. Notably, Pb exhibited a higher metal retention in plants, whereas Cd concentrations were comparatively lower. These findings indicate an increase in metal immobilization efficiencies when phytoremediation is assisted with P-loaded biochar. This comprehensive assessment highlights the potential of biochar-assisted phytoremediation as a promising approach for mitigating heavy metal contamination in soils.

show abstract

Section: Methodsmentioning

confidence: 99%

Phosphorus-Loaded Biochar-Assisted Phytoremediation to Immobilize Cadmium, Chromium, and Lead in Soils

Serrano,

López,

Henao

et al. 2024

ACS Omega

Self Cite

View full text Add to dashboard Cite

show abstract

“…In this study, biomonitoring using radishes and PVI index were proposed. Previous research has shown that radishes has exhibited significant responses to changes in contamination levels associated with potential toxic elements and other pollutants in complex matrices (Tiwari et al, 2013;Acosta-Luque et al, 2023;López et al, 2023;Serrano et al, 2023;Bhat et al, 2011).…”

Section: Pollution Riskmentioning

confidence: 99%

“…Radish (Raphanus sativus) was used as a plant model. Radish is known for being sensitive to elements like Pb and others (Acosta-Luque et al 2023;Serrano et al 2023), and for showing toxicity in solid materials (López et al, 2023). The radish seeds, obtained from Fercon, had a 90% germination rate and 99% purity.…”

Section: Biomonitoringmentioning

confidence: 99%

See 1 more Smart Citation

Environmental zoning based on the distribution of potentially toxic elements, risk contamination indices, and bioindicators in three areas affected by gold mining in Antioquia, Colombia

López,

Marín,

Saldarriaga

2024

Preprint

Self Cite

View full text Add to dashboard Cite

Gold mining stands out as a primary industrial operation significantly affecting the environment, underscoring the urgency of developing strategies to enhance environmental stewardship in the impacted areas. In areas directly or indirectly affected by emissions of hazardous substances like As, Cd, Pb, and Cr, these strategies are crucial for informed decision-making. Zoning the spatial distribution of these elements and using indices and pollution bioindicators can create a diagnostic and remedial tool to address pollution concerns effectively. The aim of this study is to apply environmental zoning in three gold-mining-affected municipalities in Antioquia, Colombia. The zoning considers various factors, including i) levels of potentially toxic elements, ii) contamination indices, and iii) bioindicators. Geospatial analysis was employed to create maps illustrating the distribution of potential toxic elements, along with the indices and bioindicators utilized. The results show that the concentrations of potentially toxic elements were the lowest, even below the reference values for non-contaminated soils, in the municipality of Yalí. In contrast, most samples from Puerto Berrío and Buriticá revealed amounts of potentially toxic elements higher than the standards for uncontaminated soils. In particular, the highest contamination values for the elements Cd, Pb, and Cr were found in Puerto Berrío. The correlation study shows that concentrations of potentially toxic elements, pollution indices, and bioindicators have a substantial association (P < 0.05) (r > 0.67). The municipalities can be categorized into three zones: a highly polluted area needing remediation, a moderately polluted zone requiring natural restoration monitoring, and a low-contamination region needing conservation efforts. Overall, this zoning proposal can help competent authorities enhance environmental management strategies.

show abstract

Proposal for a framework for environmental zoning of areas near gold mines based on the distribution of potentially toxic elements, pollution indices, and bioindicators: a case study in Antioquia, Colombia

López,

Marín,

Saldarriaga

2024

Environ Monit Assess

View full text Add to dashboard Cite

Gold mining, even under strict environmental regulations, inevitably causes environmental impacts and liabilities. To address this, the study proposes a framework for environmental zoning around gold mines based on the distribution of potentially toxic elements (PTEs), pollution indices, and bioindicators. Soil samples were collected from municipalities affected by gold mining projects, and concentrations of As, Cd, Pb, and Cr were measured. Then, the Pollution Load Index (PLI) was calculated. A plant model was used for the biomonitoring of PTEs, and the Plant Vigor Index (PVI) was determined. Finally, environmental zoning was proposed through geospatial analysis combining PTEs, PLI, and PVI values. The concentrations of PTEs were as follows: As ranged from 1.7 to 892, Cd from 0.1 to 65.2, Pb from 18.5 to 2345, and Cr from 5.4 to 118.4. Spearman’s rank correlation showed significant relations (ρ > 0.76) between bioindicators and PTE concentrations and PLI. The PVI correlated significantly with PTE concentrations (ρ − 0.41 to − 0.67) and PLI (ρ − 0.65). The municipalities were categorized into three zones: highly contaminated, moderately contaminated, and minimally contaminated. Overall, the environmental zoning maps serve as a management tool for environmental monitoring.

show abstract

Use of activated rice husk biochar for the removal of metals and microorganisms from treated leachates from landfills

Cited by 6 publications

References 53 publications

Phosphorus-Loaded Biochar-Assisted Phytoremediation to Immobilize Cadmium, Chromium, and Lead in Soils

Phosphorus-Loaded Biochar-Assisted Phytoremediation to Immobilize Cadmium, Chromium, and Lead in Soils

Environmental zoning based on the distribution of potentially toxic elements, risk contamination indices, and bioindicators in three areas affected by gold mining in Antioquia, Colombia

Proposal for a framework for environmental zoning of areas near gold mines based on the distribution of potentially toxic elements, pollution indices, and bioindicators: a case study in Antioquia, Colombia

Contact Info

Product

Resources

About