Pyrolytic Behavior of Major Biomass Components in Waste Biomass

Abstract

The pyrolytic behavior of several biomass components including cellulose, hemicellulose, lignin, and tannin, from two sources of waste biomass (i.e., pine bark and pine residues) were examined. Compared to the two aromatic-based components in the biomass, carbohydrates produced much less char but more gas. Surprisingly, tannin produced a significant amount of water-soluble products; further analysis indicated that tannin could produce a large amount of catechols. The first reported NMR chemical shift databases for tannin and hemicellulose pyrolysis oils were created to facilitate the HSQC analysis. Various C–H functional groups (>30 different C–H bonds) in the pyrolysis oils could be analyzed by employing HSQC-NMR. The results indicated that most of the aromatic C–H and aliphatic C–H bonds in the pyrolysis oils produced from pine bark and pine residues resulted from the lignin and tannin components. A preliminary study for a quantitative application of HSQC-NMR on the characterization of pyrolysis oil was also done in this study. Nevertheless, the concepts established in this work open up new methods to fully characterize the whole portion of pyrolysis oils produced from various biomass components, which can provide valuable information on the thermochemical mechanisms.

Composites of Sb2O4 and Biomass‐Derived Mesoporous Disordered Carbon as Versatile Anodes for Sodium‐Ion Batteries

“…The disordered carbon has been synthesized from inedible seeds of Syzygium cumini (Indian blackberry) which reduces the cost of the anode material considerably. The seeds have a high proportion of polyphenols and tannins which can serve as good precursors of carbon via low temperature (<500 °C) thermal treatment . Incidentally, there are no reports on the use of carbon derived from Indian blackberry seeds as anodes for sodium ion batteries in literature.…”

Bio-Based Polymers for Engineered Green Materials

“…In this special issue, wood is treated to enhance its durability with alkali lignin at high temperature [1] and improve its transparency for the preparation of bleached thin translucent veneer [2]. This sustainable harvested biomass is also considered a source of molecules: a broad number of extractives such as taxifolin and larixol [3] were extracted by simple extraction, but organic oils could also be gained by applying thermal pyrolysis [4] for further application.…”

Melanogenesis Inhibitors from the Endophytic Fungus Aspergillus amstelodami

“…The known compounds were identified as echinulin (3), [24,25] tardioxopiperazine B (4), [26] arestrictin A (5), [27] neochinulin D (6), [5,8] variecolorin O (7), [24] claudine A (8), [28] uracil (9), [29] thymine (10), [30] adenine (11), [31] blumenol A (12), [32] stigmasterol-3-O-β-D-glucoside (13), [33] mequinol (14), [34] and ferulic acid (15). [35] Apart from echinulin [25] and neochinulin D, [5] these com- pounds are reported for the first time from A. amstelodami.…”