Roslee 2016 - Oil-palm empty-fruit-bunch biochar and arsenic availability
Roslee tested whether oil-palm empty-fruit-bunch biochar changed arsenic availability in artificially contaminated soil during a four-week aerobic incubation. This is mitigation and soil-pathway context, not palm-oil occurrence evidence.
Key numbers
The abstract states that soil from UiTM Jasin sharefarm was artificially contaminated with arsenic and amended with oil-palm empty-fruit-bunch biochar at application rates of 2.5, 5.0, and 10 t ha-1. Samples were collected weekly for four weeks.
The same abstract states that adding EFB biochar did not significantly influence the concentration of As, even at the highest application rate. It also states that biochar applications reduced As contamination by 25.2%. The extracted text does not preserve the underlying concentration table cleanly, so no additional As concentration values are reported here.
The project table of contents identifies separate results sections for arsenic concentration with EFB biochar, nutrient content before biochar application, pH from week 1 through week 4, and electrical conductivity with different biochar application rates from week 1 through week 4. Those section tables were not extractable as clean text in the local PDF extraction.
Methods (brief)
Oil-palm empty-fruit-bunch biochar was collected from UPM Serdang. Soil was collected from UiTM Jasin sharefarm, artificially contaminated with arsenic, and amended with different EFB biochar application rates under aerobic incubation. The abstract says nutrient content and As concentration were examined through dry ashing.
Implications
Certification: Do not use this source as palm-oil, oil-palm fruit, or finished-food occurrence evidence. It is controlled soil-remediation context.
Courses: Useful low-tier teaching example for agricultural-residue biochar and arsenic availability, but the source page should not overstate the result because the extractable text preserves only the application rates and the 25.2% reduction statement.
App: Context only. The result may support a remediation/pathway note for oil-palm waste biochar, not product scoring.
Wiki pages this source may touch
Verification notes
Recovered from skip:not-food-occurrence under the 2026-06-10 inclusion-by-default rule. The old skip treated the thesis as out of scope because it was not palm-oil product occurrence. On reading, it is in-scope a2 mitigation and a3 soil-pathway context because it tests arsenic availability in contaminated soil using oil-palm empty-fruit-bunch biochar.
Numbers were checked against the extracted PDF abstract and table of contents. The text extraction did not preserve the underlying results tables for As concentration, pH, or electrical conductivity, so this page reports only the extractable application rates, four-week sampling window, and 25.2% reduction statement. Products and ingredients are intentionally empty.
Page history
The five most recent substantive edits to this page. The full version history lives in git; when DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.
| Commit | Date | Description |
|---|---|---|
| f6001b0 | 2026-06-10 | recover-ingest 2026-06-10: roslee2016-oil-palm-biochar-arsenic (lane a2/a3, was skip:not-food-occurrence) |