Next Article in Journal
Targeted Substituted-Phenol Production by Strategic Hydrogenolysis of Sugar-Cane Lignin
Article

Pretreatment of Loblolly Pine Tree Needles Using Deep Eutectic Solvents

Department of Chemical Engineering, Louisiana Tech University, P.O. Box 10348, 600 Dan Reneau Drive, Ruston, LA 71272, USA
*
Author to whom correspondence should be addressed.
Academic Editor: S David Jackson
Received: 14 April 2021 / Revised: 14 May 2021 / Accepted: 19 May 2021 / Published: 1 June 2021
Deep eutectic solvents (DES) are new ‘green’ solvents that have a high potential for biomass processing because of their low cost, low toxicity, biodegradability, and easy recycling. When Loblolly pine trees are harvested, their branches with needles are typically left in brush piles and decompose very slowly. Exploring the effect of DES pretreatment on waste pine needles was the goal of the present work. Loblolly pine needles were treated with three types of DES to prepare the biomass for enzymatic hydrolysis to glucose, a subject not readily found in the literature. The resulting products were analyzed by Fourier transform infrared spectroscopy, fiber analysis, and high-performance liquid chromatography. Glucose yields after pretreatment and hydrolysis were found to be six times that for untreated biomass with two of the DES. Fiber analysis indicated removal of lignin, hemicellulose, and ash from the needle biomass. Enhanced glucose yield was due to removal of lignin and disruption of biomass structure during pretreatment, so that the pretreated biomass was rich in cellulosic content. Based on the results shown in this study, among the three types of DES, formic acid:choline chloride and acetic acid:choline chloride pretreatment had better potential for biomass pretreatment compared to lactic acid:choline chloride. View Full-Text
Keywords: pine needles; biomass; mass yield; enzymatic hydrolysis; glucose yield; FTIR pine needles; biomass; mass yield; enzymatic hydrolysis; glucose yield; FTIR
Show Figures

Figure 1

MDPI and ACS Style

Gujjula, P.; Kumar, N.; Lynam, J.G. Pretreatment of Loblolly Pine Tree Needles Using Deep Eutectic Solvents. Biomass 2021, 1, 1-10. https://0-doi-org.brum.beds.ac.uk/10.3390/biomass1010001

AMA Style

Gujjula P, Kumar N, Lynam JG. Pretreatment of Loblolly Pine Tree Needles Using Deep Eutectic Solvents. Biomass. 2021; 1(1):1-10. https://0-doi-org.brum.beds.ac.uk/10.3390/biomass1010001

Chicago/Turabian Style

Gujjula, Prathima, Narendra Kumar, and Joan G. Lynam 2021. "Pretreatment of Loblolly Pine Tree Needles Using Deep Eutectic Solvents" Biomass 1, no. 1: 1-10. https://0-doi-org.brum.beds.ac.uk/10.3390/biomass1010001

Find Other Styles

Article Access Map by Country/Region

1
Back to TopTop