Evidence map›Paper›PMID 41269577›Full record

ArticleBioresources and bioprocessing2025

Thermophilic fermentation enhanced by eggshell-derived hydroxyapatite for sustainable hydrogen production.

Shishita Zahan Zisha, Hasfalina Che Man, Rozita Omar, Suraya Abdul Rashid, Tan Jian Ping, Shareena Fairuz, Abdul Manaf, Tabassum Mumtaz, Nur Syakina Jamali

Abstract read
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In one paragraph

Article in Bioresources and bioprocessing, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Shishita Zahan ZishaDepartment of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, 43400, Selangor, Malaysia.ORCID http://orcid.org/0000-0001-7141-2131
Hasfalina Che ManDepartment of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, 43400, Selangor, Malaysia.
Rozita OmarDepartment of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, 43400, Selangor, Malaysia.
Suraya Abdul RashidNanomaterials Processing and Technology Laboratory (NPTL), Institute of Nanoscience and Nanotechnology, Universiti Putra Malaysia, Serdang, 43400, Selangor, Malaysia.
Tan Jian PingSchool of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, Sepang, 43900, Selangor, Malaysia.
Shareena FairuzDepartment of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, 43400, Selangor, Malaysia.
Abdul ManafSchool of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia.
Tabassum MumtazInstitute of Food and Radiation Biology, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh.
Nur Syakina JamaliDepartment of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, 43400, Selangor, Malaysia. syakina@upm.edu.my.ORCID http://orcid.org/0000-0002-1756-6110

Funding

Ministry of Higher Education and Scientific Research FRGS/1/2023/TK08/UPM/02/3Organization for Women in Science for the Developing World Organization for Women in Science for the Developing World
6 · The paper itself

Abstract

This study presents the eco-friendly synthesis of Hydroxyapatite (HAP) using chicken eggshell biowaste as a sustainable calcium source to enhance biohydrogen production. The stoichiometric ratio of Ca/P was determined to be 1.67 by evaluating pH, temperature, and calcination time, revealing that pH 10.5, temperature 950ᵒC, and calcination time of 2 h were optimal. Structural and morphological characterization confirmed the successful formation of crystalline HAP with 78% crystallinity (XRD), accurate Ca/P ratio (EDS), and phosphate group presence (FTIR). The synthesized HAP was applied as a bio-additive in thermophilic dark fermentation using a Thermoanaerobacterium-enriched sludge. The optimal HAP dosage (560 mg/L) yielded the highest hydrogen yield of 1.085 mol H

Indexed as

Biohydrogen productionGreen synthesisHydroxyapatite from eggshellsOptimization using response surface methodologyStoichiometric ratio

Identifiers

PMID41269577
PMCPMC12638588

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.