Chemical and Thermal Characterization of Potato Peel Waste and Its Fermentation Residue as Potential Resources for Biofuel and Bioproducts Production

Abstract

The growing demand for renewable fuels has driven the interest in the utilization of alternative waste materials such as potato peel waste (PPW) which contains fermentable carbohydrate. Fermentation of PPW using a mixed microbial consortium yielded about 60% unreacted PPW fermentation residue (PPW-FR). The PPW and PPW-FR were characterized by a combination of Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectroscopies, gas chromatography-mass spectrometry (GC-MS), and thermogravimetric analysis (TGA) to quantify changes after fermentation. Fermentation of PPW resulted in fermentation of starch and concentrating lignin plus suberin and lipids in PPW-FR. TGA analysis showed that decomposition peaks differed for PPW (423 °C) and PPW-FR (457 °C). Pyrolysis-GC/MS showed an increase in phenolic and long chain fatty acid compounds with a concomitant decrease in carbohydrate derived compounds in the PPW after fermentation. Both the PPW and PPW-FR have shown potential based on properties to be converted into crude biofuel via thermochemical processes.

High efficacy on diclofenac removal by activated carbon produced from potato peel waste

“…These TGA/DTG profiles are similar to the ones obtained by Ö nal et al (2011) and by Liang and McDonald (2012) being possible to observe a DTG intense peak at 300°C, a broader peak at 70°C and also some decomposition centered at 440°C.…”

“…PPW is mainly composed by starch and other polysaccharides such as cellulose, hemicellulose (Arapoglou et al 2010;Ö nal et al 2011;Liang and McDonald 2012), which makes it a good feedstock to bioethanol production (Arapoglou et al 2010;Khawla et al 2014). However, the biological conversion of this waste cannot valorize all the components of PPW.…”

Production and characterization of bio-oil and biochar from the pyrolysis of residual bacterial biomass from a polyhydroxyalkanoate production process

“…The crude protein content was estimated from the measured N content (a multiple of 6.25 was assumed). The lignin content was determined on lipid-free RBB as acid insoluble (Klason) and acid soluble lignin as described by ASTM E1758-01 with the modification proposed by Liang and McDonald [28].…”

“…The third stage was possibly due to lignin degradation (250-500 • C). Lipids residue would occur through the whole temperature range (200-600 • C) [28,34,35]. Proteins from bacteria decompose in a temperature range of 300-400 • C [18].…”

Increasing of Food and Bioenergy Potato Resources by Microbial Influence on Tubers Phytohormonal Status

“…Potato peel features a high potential for producing biofuel [6]. Enzymatic hydrolysis with a combination of three enzymes, released 18.5 g/l reducing sugar and produced 7.6 g/l of ethanol after fermentation by Saccharomyces cerevisae var.…”