Journal of Nanomedicine & Nanotechnology

Synthesis of Cellulose Nanocrystals (CNCs) from brewerâ??s spent grain using acid hydrolysis: Characterization and optimization

34^th World Nano Conference

October 16-17, 2023 | Webinar

Belachew Zegale Tizazu

Addis Ababa Science and Technology University, Ethiopia

Scientific Tracks Abstracts: J Nanomed Nanotechnol

Abstract:

This study is aimed at utilizing Brewery’s Spent Grain (BSG) byproduct for the synthesis of Cellulose Nanocrystals (CNCs) using acid hydrolysis and optimizing the hydrolysis parameters (hydrolysis time, temperature, liquid-solid ratio, and acid concentration). Alkali and bleaching treatment were done to remove hemicellulose and lignin from BSG. Optimization process was performed using central composite design (CCD) to obtain optimum value of Cellulose Nanocrystal (CNC) yield. The maximum Cellulose Nanocrystal (CNC) yield of 43.24% was obtained at optimum hydrolysis conditions of 50°C, 51 wt% acid concentration, 41 min, and liquid-solid ratio of 19 ml/g. The raw brewery spent grain; alkali- treated fiber, bleached fiber, and obtained CNC were characterized using Scanning Electron Microscopy (SEM), XRD, particle analyzer, FTIR, and Differential Scanning Calorimeter (DSC). The characterization results indicated that the obtained Cellulose Nanocrystal (CNC) has rod-like whisker shape with crystallinity of 76.3% and an average particle size of 309.4 nm. Keywords: Cellulose Nanocrystals (CNCs), Synthesis, Optimization, Characterization.

Biography :

Belachew Zegale Tizazu is a Vice Dean, School of Postgraduate Studies, Addis Ababa Science and Technology University. His skills and expertise in Biochemical Engineering, Bioprocess Engineering, Enzyme Technology etc.