Catalytic valorisation of various paper wastes into levulinic acid, hydroxymethylfurfural, and furfural: Influence of feedstock properties and ferric chloride

Dutta, Shanta; Zhang, Qiaozhi; Cao, Yang; Wu, Chunfei; Μουστάκας, Κωνσταντίνος; Zhang, Shicheng; Wong, Ka Hing; Tsang, Daniel C.W.

doi:10.1016/j.biortech.2022.127376

Cited by 17 publications

(2 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the research of Raymundo et al, Ca(OH) 2 , CaO and Ca(COOH) 2 were further confirmed to promote deoxygenation of bio-oils, and the promotion effect is in the order: Ca(OH) 2 , CaO, and Ca(COOH) 2 [23]. In general, CaO is an important component of bio-waste ash [10,24,25]. CaCO 3 and Ca(OH) 2 would be formed by the reaction between CaO and a small molecule (CO 2 and H 2 O) [26].…”

Section: Introductionmentioning

confidence: 93%

Effects of Ca-Compounds on the Gases Formation Behavior during Molten Salts Thermal Treatment of Bio-Waste

Zou²,

Zhou³

et al. 2022

Catalysts

View full text Add to dashboard Cite

Bio-waste utilization is essential, and pyrolysis is a prominent way for its effective utilization. However, the gradual accumulation of ash compounds in the intermediate products probably affects the thermal conversion characteristics of bio-waste. In the present study, beech wood and disposable chopsticks were selected as bio-waste samples. The effects of typical ash components (Ca-compounds) on volatile formation behavior were investigated during the molten salts thermal treatment of bio-waste. Results demonstrated that about 80% mass of initial bio-waste was gasified into the volatiles at 300 °C. The introduction of Ca-compounds in the molten salts slightly decreased the total yield of gaseous products. More specifically, Ca2+ could improve the generation of CO2 and suppress the generation of other gases (CO, H2, and CH4), and this is accompanied by a reduction in the low heating value (LHV) of the gases. The possible reason is that Ca2+ might act on the -OH bonds, phenyl C-C bond, methoxy bond and carboxylic acid -COOH bonds of the bio-waste to promote CO2 release. In contrast, the introduction of CO32− and OH- tended to relieve the inhibition effect of Ca2+ on the generation of H-containing gases. Meanwhile, the introduction of Ca2+ can promote the conversion of bio-waste into liquid products as well as increase the saturation level of liquid products. Moreover, as a vital form of carbon storage, CO2 was found to be abundant in the pyrolysis gases from molten salts thermal treatment of bio-waste, and the concentration of CO2 was much higher than that of direct-combustion or co-combustion with coal. It’s a promising way for bio-waste energy conversion as well as synchronized CO2 capture by using molten salts thermal treatment, while the introduction of small amounts of Ca-compounds was found to have no significant effect on the change of CO2 concentration.

show abstract

Section: Introductionmentioning

confidence: 93%

Effects of Ca-Compounds on the Gases Formation Behavior during Molten Salts Thermal Treatment of Bio-Waste

Zou²,

Zhou³

et al. 2022

Catalysts

View full text Add to dashboard Cite

show abstract

“…With appropriate physical, chemical, or biological treatments, the cellulose can be depolymerized into fermentable sugars and transformed into highervalue green products using biotechnological fermentation techniques. The technological aspects that require evaluation include composition analysis, pretreatment, and catalytic conditions for wood cellulose in paper containers, production of hydrolyzed cellulose fibers, enzymatic hydrolysis, and the application of biotechnological fermentation techniques (Dutta et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Polyhydroxyalkanoate production from food packaging waste paper

Tu,

Hsiung,

Liang

et al. 2023

BioRes

View full text Add to dashboard Cite

This study evaluated the production of marine biodegradable plastics, specifically polyhydroxyalkanoates (PHAs), using waste paper from food containers as a novel material source. The results showed that adding dilute sulfuric acid as a pretreatment may have a negative impact on enzyme hydrolysis efficiency. Without pretreatment, the highest glucose concentration was observed in the 50-min heating group. In the experimental group with 1% dilute sulfuric acid as a pretreatment, the highest average glucose concentration was observed in the 25-min treatment group. In flask scale experiments, the C/N ratio was controlled at 10, 20, and 30. The results showed that when the C/N ratio was 10, the PHA/CDM ratios were 16.3 and 23.6 at 48 and 72 h, respectively. After 96 h of cultivation using hydrolysis liquid from the waste paper container as the sole carbon source in a 5-L scale experiment, the PHA/CDM ratio was 28.7 and the PHA concentration was 0.95 g/L. The potential bacterial strain in this study was confirmed to be a Bacillus genus bacterium after strain identification. The signal peaks indicated that the PHA obtained from the Bacillus sp. production process was PHB.

show abstract