Cationic microcrystalline cellulose – Montmorillonite composite aerogel for preconcentration of inorganic anions from dairy wastewater

Noha Amaly, Prachi Pandey, Ahmed Y. El-Moghazy, Gang Sun, Pramod K. Pandey

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Development of efficient adsorbents to inorganic anions as a solid phase extraction (SPE) material is highly desirable for chromatographic analysis and pollution control. In this work we developed a new hybrid cationic microcrystalline cellulose aerogel composite. Cationic cetylpyridinium imbedded montmorillonite (CPC-MT) was uniformly entrapped in microcrystalline cellulose (MCC) to enhance anionic adsorption efficiency and mechanical stability. The developed CPC-MT@MCC aerogel was used as an SPE adsorbent for anions from dairy wastewater by coupling with ion-column chromatography. Further quaternized CPC-MT@MCC aerogel (CPC-MT@QMCC) showed unique low density (10.6 mg cm−3), large specific surface area (320 m2 g−1), porosity 70%, 800 mg g−1 nitrate adsorption capacity within 60 min and ease of elution in alkaline solutions. The CPC-MT@QMCC aerogel showed efficient regeneration and reuse performances for up to 10 cycles. More importantly, a dynamic binding efficiency of 710 mg g−1 highlights its excellent performance for practical applications. 96% of nitrate anion from environmental manure wastewater samples were adsorbed with 98.7% recovery. A good linear relationship was obtained in the range of 0.01–10 mg L−1 and the limits of detection was 0.5 mg L−1 using CPC-MT@QMCC aerogel as a preconcentration column. The successful synthesis of such intriguing and economic CPC-MT@QMCC aerogel may provide a promising matrix for high-performance and high efficiency chromatographic media.

Original languageEnglish (US)
Article number123281
JournalTalanta
Volume242
DOIs
StatePublished - May 15 2022
Externally publishedYes

Keywords

  • Cationic aerogel
  • Dairy wastewater
  • Montmorillonite
  • Nitrate
  • Preconcentration

ASJC Scopus subject areas

  • Analytical Chemistry

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