Reusability of lactic acid on hydrolysis of nanocrystalline cellulose from pepper waste (piper nigrum L.)

Holilah Holilah*, Lisman Suryanegara, Hasliza Bahruji, Zuratul Ain Abdul Hamid, Muhammad Sapto Wahyudi, Nanang Masruchin, Asranudin Asranudin, RH Fitri Faradilla, Edi Syafri, Alvina Tata Melenia, Stella Jovita, Reva Edra Nugraha, Didik Prasetyoko*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Lactic acid recovery and reusability for hydrolysis of cellulose offers an economical method and produces fewer waste streams. Successful lactic acid recovery up to three recycle times efficiently hydrolyzed NCs with rod-shape morphology. However, after four cycles, the nanocrystalline cellulose yield reduced from 72.3 % to 48.2 %, forming large nanocelluloses with high crystalline index. Large-size nanocellulose with high zeta potential and thermal stability were obtained with increasing cycles due to inefficient acid diffusion into the rigid crystalline network compared to amorphous cellulose. This study offers a green pathway for hydrolysis nanocellulose using a less corrosive and low toxicity lactic acid than inorganic acids.

Original languageEnglish
Article number100922
JournalCase Studies in Chemical and Environmental Engineering
Volume10
DOIs
Publication statusPublished - Dec 2024

Keywords

  • Nanocrystalline cellulose
  • acid recovery
  • hydrolysis
  • lactic acid
  • organic acid

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