Cited by 150Adsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterialsThermochemical Biomass Conversion Processes

Physical modification of biochar to expose the inner pores and their functional groups to enhance lead adsorption

Open access
Fahmi, Alaa Hasan, Samsuri, Abd Wahid, Jol, Hamdan, Singh, Daljit·2018·RSC Advances

Abstract

Biochars have been successfully used to treat wastewater and contaminated soils.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1039/c8ra06867d

Cites

48 of 48 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The smaller pore sizes and lower porosity of the biochar surface shell were likely due to collisions between grains during mixing with sand, causing collapse and compression of the biochar's exterior walls and/or attached fine mineral, volatile matter, and ash after pyrolysis.

    “This was likely due to collisions between grains during the mixing process with sand, causing the collapse and compression of the biochar's exterior walls and/or the attached fine mineral, volatile matter, and ash after pyrolysis (Fahmi et al., 2018) (Fig. 3(c)− (d), Fig. 4, Figure S14).”

    From Critical field evaluations of biochar-amended stormwater biofilters for PFAS and other organic micropollutant removals (2025) · cites this paper as Fahmi et al., 2018

    Split into 2 atoms — 0 confirmed, 2 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

    Experimental — accuracy not yet measured
  • If macropores become partially blocked, the adsorption rate and pollutant Re % significantly decrease.

    “If these macropores become partially blocked, the adsorption rate and pollutant Re % significantly decrease (Fahmi et al., 2018; Mohanty et al., 2018; Pritchard et al., 2023).”

    From Critical field evaluations of biochar-amended stormwater biofilters for PFAS and other organic micropollutant removals (2025) · cites this paper as Fahmi et al., 2018

    The Introduction (page unavailable) says that blocked macropores reduce biochar’s heavy-metal adsorption capacity by limiting access to inner pores. It does not establish that partial blockage significantly decreases the adsorption rate or pollutant removal percentage; the Methods (page unavailable) calculates Pb removal percentage at equilibrium, not a rate of decrease caused by blockage. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 5

  1. Yong Sik Ok C. N. B., Sophie M. and Uchimiya Scott X., Biochar Production, Characterization, and Applications, CRC press, 2015
  2. Dieguez-Alonso A., Fixed-bed biomass pyrolysis: mechanisms and biochar production, Dr.-Ing Dissertation, Tecnische Universitat, Berlin, 2015
  3. IBI, IBI biochar Stand., 2015, pp. 1–61
  4. Mohan D. Singh P. Sarswat A. Steele P. H. Pittman C. U. J. Colloid Interface Sci. 2015 448 238 250 10.1016/j.jcis.2014.12.030 25744855 · DOI
  5. Claoston A. N., Immobilisation of arsenic, copper, manganese and lead in gold mine tailings by oil palm empty fruit bunch and rice husk biochars, Master's thesis, Universiti Putra Malaysia, 2015

Cited by

Sorted by citations

Authors
Fahmi, A. H., Samsuri, A. W., Jol, H., & Singh, D.
Affiliations
  • Universiti Putra Malaysia (MY)
  • Department of Land Management
Corresponding author
Samsuri, Abd Wahid
Venue
RSC Advances
Published
2018
Volume
8
Issue
67
Pages
38270-38280
ISSN
2046-2069 (ISSN-L)
OpenAlex
W2901528246
Cited by
143
References
48
Citations by year
2026: 29 · 2025: 19 · 2024: 29 · 2023: 15 · 2022: 19 · 2021: 20 · 2020: 9 · 2019: 3
FWCI
3.51
Type
journal article
Language
en
Open access
Locations
  • RSC Advances (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Universiti Putra Malaysia Institutional Repository (Universiti Putra Malaysia) (acceptedVersion)
Funders
Research Grants Council, University Grants Committee (UPM/IPS/9575800 Research Grant)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
  • Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
Keywords
biochar, lead adsorption, empty fruit bunch, oil palm, particle size, pore structure, oxygen-containing functional groups, heavy metal biosorption, surface area, cation exchange capacity, zeta potential, wastewater treatment

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review