Table · dataset · 2026
Preparation of Carboxymethyl Cellulose-Based Hydrogels for Atmospheric Moisture Adsorption
Listed in ZivaHub and Deakin Research Online and DMU Figshare — shown once because both records carry DOI 10.1021/acsapm.6c03547.s001
Hygroscopic hydrogels have emerged as promising adsorbents for atmospheric water harvesting owing to their tunable network structures and strong affinity for water.
Description
In this study, carboxymethyl cellulose (CMC) hydrogel beads were fabricated using a dual-crosslinking strategy in which covalent bonding with epichlorohydrin (ECH) and ionic interactions with Ca<sup>2+</sup> ions in a CaCl<sub>2</sub> coagulation bath occurred simultaneously.
This approach enabled the in situ incorporation of hygroscopic calcium species, eliminating the need for an additional salt-loading step. The effects of CMC (1–6 wt %), ECH (1–10 wt %), and NaOH (1–6 wt %) concentrations on precursor viscosity, hydrogel yield, bead morphology, calcium distribution, and atmospheric moisture adsorption were systematically evaluated. Precursor viscosity increased with CMC concentration (53–26,114 cP) but decreased with NaOH concentration (11,263–2,344 cP).
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Atmospheric moisture adsorption increased with relative humidity (RH), reaching 3.0–4.9 g/g at 90% RH. The formulation containing 3 wt % CMC, 5 wt % ECH, and 1 wt % NaOH achieved the highest hydrogel yield and moisture adsorption capacity. Using a custom gravity-driven multi-nozzle bead-dropper, this formulation produced dry hydrogels at a rate of 0.983 kg/h, approximately 1,000 times that of the conventional syringe-pump system, while a lower-viscosity reference formulation further increased throughput to 1.350 kg/h.
Collectively, these findings highlight the feasibility of scalable production of biomass-derived hygroscopic hydrogel beads for atmospheric moisture harvesting.
Links
Where it is published
- DOI doi.org/10.1021/acsapm.6c03547.s001 ↗
DOI / persistent id · from zivahub uct ac za
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from zivahub uct ac za
Topics
- From keywords
- Astronomy & Astrophysics · Astronomy & Astrophysics · Astronomy & Astrophysics · Chemistry · Chemistry · Chemistry · Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Ecology · Ecology · Ecology · Life Sciences · Life Sciences · Life Sciences · Ocean & Atmospheric Science · Ocean & Atmospheric Science · Ocean & Atmospheric Science
Provenance · 3 source records, 23 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ZivaHub | oai:figshare.com:article/34046904 | 13 d ago | JSON v1 |
| Deakin Research Online | oai:figshare.com:article/34046904 | 13 d ago | JSON v1 |
| DMU Figshare | oai:figshare.com:article/34046904 | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
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| concepts[field].anzsrc:group:3103 | mapping · figshare dmu ac uk | vocabulary-mapper@1.0.0 | keywords['Ecology'] |
| concepts[field].anzsrc:group:3103 | mapping · dro deakin edu au | vocabulary-mapper@1.0.0 | keywords['Ecology'] |
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| concepts[field].local:field:earth-environmental | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
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| concepts[field].local:field:earth-environmental | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
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| concepts[field].local:field:ocean-atmospheric | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
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| title | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/title |