Abstract
Background: Biochar has emerged as a sustainable and cost-effective amendment for remediating heavy metal-contaminated soils. This study investigated the effectiveness of sawdust-derived biochar in reducing lead (Pb) contamination, improving soil pH and organic matter, and its impact on seed germination in Pb-contaminated soil. Methods: A laboratory-scale experiment using a post-test control design was conducted with soils treated with 1%, 4%, and 7% biochar concentrations. Measured parameters included Pb concentrations, pH levels, organic matter content, and germination rates of mung bean seed. Results: Biochar application reduced Pb concentration by up to 98.19% and increased soil pH from 6.2 to 7.45. Organic matter content reached 62.92% at 7% biochar. However, seed germination rates declined at higher concentrations, with the highest germination rate (81.67%) observed at 1% biochar. Differences among treatments were statistically significant (P<0.05). Conclusion: Sawdust-derived biochar effectively reduces Pb contamination and improves soil pH and organic content, offering a sustainable remediation solution. However, higher application rates may negatively affect seed germination, indicating the need for optimized dosage in future applications.
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Claims 5
Claim · model-written summary
Seed germination declined at higher biochar concentrations.
- Taxon
- mung bean
.jpg?width=60)
Vigna radiatae1 - Treatment
- higher concentrationse0
- Outcome
- seed germination ratese0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“seed germination rates declined at higher concentrations”
e1“germination rates of mung bean seed”
Claim · model-written summary
The highest germination rate was 81.67% at 1% biochar.
- Taxon
- mung beanVigna radiatae1
- Treatment
- 1% biochare0
- Outcome
- germination ratee0
- Direction
- higheste0
- Value
- 81.67%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest germination rate (81.67%) observed at 1% biochar”
e1“germination rates of mung bean seed”
Claim · model-written summary
Biochar reduced soil Pb concentration by up to 98.19%.
Not reportedTaxonComparator
Verbatim
e0“Biochar application reduced Pb concentration by up to 98.19%”
e1“germination rates of mung bean seed”
Claim · model-written summary
Biochar increased soil pH from 6.2 to 7.45.
Not reportedTaxonComparator
Verbatim
e0“increased soil pH from 6.2 to 7.45”
e2“Biochar application reduced Pb concentration by up to 98.19%”
e1“germination rates of mung bean seed”
Claim · model-written summary
Organic matter reached 62.92% with 7% biochar.
Not reportedTaxon
Verbatim
e0“Organic matter content reached 62.92% at 7% biochar”
e1“germination rates of mung bean seed”
The same questions in other papers
biochar · soil: chemistry · Vigna radiata (mung bean)Results agree
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biochar · nutrient: content · Vigna radiata (mung bean)Results agree
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- positive
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.