This laboratory paper tests aloe leaf powder for zinc and sodium adsorption. It is retained as remediation literature with serious quantitative limitations: negative zinc concentration estimates and a reported 500% sodium removal invalidate the paper’s efficacy claims as treatment evidence.
Key numbers
Reported zinc removal: 9.495% at 1.4% aloe, 10.237% at 4% aloe (p 3 prose; Table 3 rounds to 10.24% but labels the metal sodium). Table 2 reports zinc estimates −9.536363636 ppm for both a treated sample and the control, and 7.072727273 ppm at 1.4% aloe. Sodium Table 5 reports 500%, which cannot represent ordinary removal efficiency. These are preserved as source-error diagnostics, not accepted physical removal results.
Tables 1–5 retain the full pH series, calibration concentrations/responses and sample estimates in structured context records.
Methods (brief)
Aloe leaves shade-dried for two weeks, heated at 50–60°C and ground; phosphoric-acid pretreatment described. Adsorption at 37°C and 120 rpm, 25–40 minutes. Zn measured by AAS, Na by flame photometry. Dose percentages differ across Methods, tables and prose; wastewater sampling origin and replication are not adequately described.
Implications
Documents an attempted biosorption approach and a reproducibility gap. It cannot support validated percentage removal, potable-water safety or aloe-based treatment efficacy. Sodium data are auxiliary diagnostics.
Evidence Fitness: EF-X for claimed quantitative efficacy because calibration outputs and removal arithmetic are internally inconsistent; retain explicit context-only experimental records.
Wiki pages this source may touch
- Remediation evidence — drivers and interventions
- Irrigation water and soil amendments as anthropogenic inputs to cropland
- Zinc
Verification notes
Novel adsorption-solution matrix identifies laboratory remediation solutions. Sodium is not promoted to a heavy-metal page. Negative estimates and >100% removal are not corrected by inventing replacement values. Table 3 zinc/sodium label conflict is explicit; exact pH is not a proxy for adsorption. No food or supplement concentration was measured.
The preserved Library PDF is identified by RPHMI_7; SHA-256 a606d641a79e1eebec745983e15b7cd4eea05c59ae5a64c3c8696427ca99a270. The byline, year and publication were verified in the PDF. DOI provenance and any publication-date differences are described above. Original access location: https://markhorjournal.com/index.php/mjz/article/download/37/35. Source-specific numeric observations, context dispositions, row-fit decisions and remaining gaps are preserved in the structured evidence record. No source value was converted across product, soil, water or experimental matrices during ingest.
Update history
No substantive edit history is available in this build. The full commit record is available in git.