Biomass Conversion and Biorefinery
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2022
·Vol. 13
·期 14
·12717-12736
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IF 4.05
Gupta Geetika,Baranwal Manoj,Saxena Sanjai,Reddy M. Sudhakara
Banana is one of the most important food crops which is generally planted in tropical countries and has beneficial applications in the food industry. A large amount of by-products such as leaves, inflorescence, pseudostem, and rhizomes serves as a source for different industries. Most of these by-products may serve as an undervalued commodity with a limited commercial value, application and in some cases, it is considered as an agricultural waste. This also paves the way to utilize a huge amount of untapped biomass and resolve some of the environmental issues. Most of the edible bananas are cultivated mainly for their fruits, thus, banana farms could generate several tons of underused by-products and wastes. The present review mainly discusses the utilization of banana by-products such as peels, leaves, pseudostem, pseudostem juice, stalk, and inflorescence in various industries as a thickening agent, alternative source for renewable energy, nutraceuticals, livestock feed, natural fibers, coloring agents, bioactive compounds, and bio-fertilizers. Banana waste serves as a potential source for the production of valuable products and preserves renewable resources and provides additional income to the farming industries.
研究领域:
农业科学
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生物技术
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环境科学
✓ 已验证
DOI
高影响因子
Waste and Biomass Valorization
·
2018
·Vol. 10
·期 6
·1755-1766
·
IF 1.874
Pathak Pranav D.,Mandavgane Sachin A.,Kulkarni Bhaskar D.
Papaya is a popular fruit consumed worldwide and well-known for its food and nutritional values. It is used in food industries for the production of jams, jellies, etc. As a result, these industries generate huge amounts of papaya peel (PP) and seeds as by-products, which are typically considered a waste, and thus discarded. However, our current investigation indicates that PP is a valuable source of bioactive compounds, which can be converted into many value-added products. In this article, we review the physicochemical composition and valorization of PP. PP can be utilized to obtain many value-added products by fermentation (e.g., biofuels, adsorbents, dietary fibers, biomedicine, biomaterials). The biorefinery approach for PP will definitely increase the value of this waste by producing an array of value-added products and achieving zero waste generation.
研究领域:
食品科学
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生物技术
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环境科学
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
·
2022
·Vol. 24
·期 19
·7644-7651
·
IF 11.034
Linfeng Zhang,Changpo Ma,Chenyu Wang,Guangyu Sun,Yongqi Shu,Wenya Zou,Tao Yang,Weiran Yang
Glyceric acid (GA), a glycerol derivative, can be used as a versatile platform molecule to produce value-added chemicals. Succinic acid (SA) is a very important bio-based molecule that acts as a fine chemical and is used in biodegradable polymer synthesis. It has been shown earlier that GA can be effectively converted to the platform chemical 3-iodopropionic acid (3-IPA) with a RhCl3/HI catalyst system. In this work, we first explored the production of SA from 3-IPA by carbonylation. With RhCl3 as the catalyst and acetic acid (AA) and water as the solvent, as high as 78% yield of SA can be achieved. Considering the similarity of the catalysts used in two steps, we then further probed the one-step synthesis of SA directly from GA. Under optimized reaction conditions, 71% yield of SA can be obtained directly from GA by reductive carbonylation with RhCl3 and I2 as the catalyst under H2 and CO atmospheres. This is the first report of the direct conversion of GA to SA, which provides a novel method for glycerol valorization.
研究领域:
化学工程
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催化
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生物化工
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2025
·
IF 10
Weilun Qian,Zhengzheng Liu,Anyang Tang,Junfeng Kong,Lining Yu,Wenyu Feng,Huibin Zhang,Huazhen Cao,Guoqu Zheng
The engineered transformation of low-gold-grade pyrite into hyper-enriched gold concentrates has critical significance in environmental protection and economic sustainability. Nevertheless, the artificial hyper-enrichment of gold has been challenging to achieve due to the stringent conditions required for mineralization. Herein, this work proposed a conversion of pyrite to ferrous sulfide (FeS) for realizing hyper-enrichment gold concentrates and rapid acid leaching, as well as increasing the added value of Fe and S resources simultaneously. The transition state of Fe 1-x S during FeS formation provides diffusion channel for Au atom transfer and gather. Afterwards, FeS phase is able to dissolve fastly in 30 min, inhibiting the formation of S 8 secondary inclusions around gold effectively. Using this method, the gold grade can increase up to 70.70 g/t and the residue yield of the concentrates is reduced to 3.4%. Additionally, high-value Fe- and S- containing products are yielded as green vitriol and sulfur, respectively. Besides, gram-scale concentrates produced by kilogram-scale FeS are evaluated for industrial application, emphasizing process stability and economic sustainability.
研究领域:
矿物工程
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环境科学
·
冶金学
✓ 已验证
产品关联
DOI
高影响因子
Foods
·
2022
·Vol. 11
·期 12
·1710
·
IF 5.561
Jiarong Zhang,Xuequan Sun,Pinhe Liu,Tongze Zhang,Joel A. Jelderks,Harold Corke
Coffee cascara is the first and most significant by-product of the coffee processing industry, whose valorization has become an urgent priority to reduce harmful environmental impacts. This work aimed to provide an improved understanding of phytochemicals and polysaccharides in coffee cascara in order to offer information for the better evaluation of potential applications. Phytochemicals in 20 different coffee cascara samples were ultrasonically extracted and analyzed by HPLC-UV and HPLC-MS/MS. Four novel compounds were isolated for the first time from coffee cascara, including two still unknown tautomers (337 Da), and two dihydroflavonol glycosides (dihydromyricetin glycoside and dihydromyricetin rhamnosylglycoside). Their presence can contribute to the design of new value-added applications of coffee cascara. Chemical characterization of two polysaccharides from two of the coffee cascara pulp samples showed that they were mainly composed of homogalacturonan, with rhamnose and arabinose as minor neutral sugars. In addition, principal component analysis results indicated that coffee cultivar and/or country significantly impacted the phytochemical composition of coffee cascara, although differences may be reduced by the external environment and processing method. It is suggested that processing method should be carefully designed when generating coffee cascara from the same cultivar and country/farm.Keywords:coffee cascara;valorization;phytochemicals characterization;novel compounds;pectic polysaccharides
研究领域:
农业科学
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食品科学
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植物化学
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环境科学
✓ 已验证
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Yuan Jiang,Ruolan Xu,Chen Zeng,Kejie Wang,Lujia Han,Xuesong Zhang
This study explored a scalable decomposition-catalysis route to effectively valorize disposable COVID-19 face mask into tunable value-added products. The metal-doping carbonaceous catalysts (M/Cs) were successfully synthesized through a single-step energy-efficient thermal process. The modest decomposition-catalysis of face mask over Zn/C gave rise to a relatively high yield (73.52%) of liquid oil with 99% of selectivity toward jet fuel range (C 8 – C 16 ) hydrocarbons. Besides, the scalable decomposition-catalysis of face mask over Ni(50)/C at 800 ℃ was observed to thoroughly transform face mask into gas with the cumulative gas yield of 967 NmL/g mask , involving 49.90 vol% of H 2 and 40.90 vol% of CH 4 . Moreover, a dense, entangled growth of carbon nanotubes were formed on the surface of M/Cs. In brief, this study developed a scalable and promising route by using M/Cs for the valorization of COVID-19 face mask into hydrocarbon fuel or coupling harvest of H 2 -enriched fuel gas and carbon nanotubes.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2022
·
IF 8.035
Puxiang Yan,Haiyong Wang,Yuhe Liao,Pengyao Sun,Chenguang Wang
Catalytic valorization of biomass into chemicals and fuels plays a key role in order to achieve net-zero greenhouse gas emissions. Herein, a series of hierarchical ZSM-5 zeolites were synthesized by the post-treatment method to transform furfural alcohol (FAL) to levulinic acid (LA). ZSM-5 obtained from tandem alkaline treatment (0.2 M NaOH) and acid washing (0.1 M HCl), denoted as ZSM-5-OH 0.2 -H, exhibited the highest activity, affording 76.2% LA yield in 9:1 acetone–water mixed solvents at 393 K for 0.5 h. The enhanced adsorption capacity and acid accessibility of FAL on zeolite mediated by the introduction of mesopores, as well as the reduced secondary reactions of the generated LA due to few Al atoms in straight and sinusoidal channels (as confirmed by UV–vis diffuse reflectance), were responsible for the outstanding catalytic performance of ZSM-5-OH 0.2 -H. The structure–activity relationship revealed that regulating the porous structure and Al distribution of ZSM-5 was an effective strategy to enhance its hydrolytic performance of FAL to LA. Moreover, ZSM-5-OH 0.2 -H could be reused for three reaction cycles without significant loss in catalytic activity.
研究领域:
化学工程
·
催化
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生物质转化
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可持续化学
✓ 已验证
DOI
高影响因子
EcoMat
·
2024
·
IF 10.7
Junming Shi,Guoyang Gao,Can Jin,Hongqing Wu,Weizhen Wang,Yulong An,Zhen Zhou,Zhanhua Huang,Wenshuai Chen
Value-added conversion of lignocellulose is a sustainable approach. Photo-refining biomass is in line with current environmental protection strategies. However, photo-reforming biomass suffers from poor catalyst stability and low conversion efficiency. Here, we designed fructose as a lignocellulosic model. The heterogeneous structure of Prussian blue coating was constructed with a special covalent bond structure of Co CN Zn. This structure has a catalytic conversion mechanism that can accelerate electron transfer. Fructose was simultaneously converted to value-added platform compounds (5-HMF and formic acid) and gaseous fuels (CO, CH 4 ) with a conversion rate of up to 92.5%, which is more than 1.7 times than that of catalysts without adding Prussian blue. Hydrogen transfer and carbon transfer on the carbon atoms of fructose facilitates the production and accelerates the spillover of CO from formic acid. This work provides new ideas for the development of Prussian blue catalysts and the conversion of pentose.
研究领域:
化学工程
·
催化科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2017
·
IF 5.715
Leichang Cao,Gang Luo,Daniel C.W. Tsang,Huihui Chen,Shicheng Zhang,Jianmin Chen
As a typical lignocellulosic biomass , abundant amount of green landscaping waste can be used as low-cost feedstock to produce value-added chemicals. This work developed a novel process to obtain industrially important cellulose acetate from green landscaping waste after separation of hemicellulose as a substrate rich in monomeric xylose . Sixteen samples of selected green waste were pretreated with diluted acid at moderate temperatures. Afterwards, the residues were treated with acetic anhydride and a small amount of sulfuric acid as catalyst to make cellulose acetate. The quantity and quality of cellulose acetate were analyzed by Fourier Transform Infrared Spectroscopy (FT-IR), Nuclear Magnetic Resonance ( 1 H NMR), and Gel Chromatography (GPC). The activation mechanisms of the diluted-phosphoric-acid pretreatment on yields and quality of cellulose acetate were also investigated using Thermogravimetric Analyzer (TGA) and Scanning Electron Microscope (SEM). Without the pretreatment, the yields of cellulose acetate from green landscaping waste ranged from 4.0% to 8.6%. After the pretreatment the mean yield of cellulose acetate from all sixteen green waste significantly increased to approximately 35%, illustrating the high efficiency and wide applicability of our proposed method.
研究领域:
生物化学
·
材料科学
✓ 已验证
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Junhong Wang,Dongming Lan,Junping Zhuang,Yonghua Wang
Fruit shell biomass is an agricultural waste that could be valorised into various value-added chemicals. However, the intertwined structure between lignin and holocellulose limits free sugar generation for further fermentation, requiring efficient pretreatment for selective delignification. We pretreated Camellia oleifera shell by ethanolamine-based solvents (binary deep eutectic solvents and single ethanolamine or its derivatives), and compared pretreatment effectiveness of these solvents. Single ethanolamine was the best among ethanolamine-based solvents, indicating the unnecessity of deep eutectic solvent synthesis. Furthermore, structural characterization confirms that ethanolamine could effectively deconstruct Camellia oleifera shell with the highest delignification (76.46%) and sugar yields (83.73% for glucose and 66.87% for xylose) at 130 °C for 3 h. Additionally, correlation analysis suggests that alkalinity and proton dissociation capacity together determined the delignification capacity of ethanolamine. Our findings serve a potential solution to valorise the waste fruit shell lignocellulose resources.
研究领域:
生物技术
·
化学工程
·
农业科学
✓ 已验证
产品关联
DOI
高影响因子
Science Bulletin
·
2023
·
IF 18.9
Ye Wang,Ming Xu,Xi Wang,Ruixiang Ge,Yu-Quan Zhu,An-Zhen Li,Hua Zhou,Fengen Chen,Lirong Zheng,Haohong Duan
Electrocatalytic oxidation of renewable biomass (such as glucose) into high-value-added chemicals provides an effective approach to achieving carbon neutrality. CuO-derived materials are among the most promising electrocatalysts for biomass electrooxidation , but the identification of their active sites under electrochemical conditions remains elusive. Herein, we report a potential-dependent structure evolution over CuO in the glucose oxidation reaction (GOR). Through systematic electrochemical and spectroscopic characterizations, we unveil that CuO undergoes Cu 2+ /Cu + and Cu 3+ /Cu 2+ redox processes at increased potentials with successive generation of Cu(OH) 2 and CuOOH as the active phases. In addition, these two structures have distinct activities in the GOR, with Cu(OH) 2 being favorable for aldehyde oxidation, and CuOOH showed faster kinetics in carbon–carbon cleavage and alcohol/aldehyde oxidation. This work deepens our understanding of the dynamic reconstruction of Cu-based catalysts under electrochemical conditions and may guide rational material design for biomass valorization.
研究领域:
电化学
·
催化
·
材料科学
·
可再生能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Yunshuo Wu,Yuxin Sun,Xuanhao Wu,Haiqiang Wang,Lianzhou Wang,Zhongbiao Wu
Industrial nitrous oxide (N2O) emissions with high concentrations pose a significant challenge to climate change, while the oxidative dehydrogenation of propane (ODHP) with N2O presents a promising strategy for N2O valorization. However, the activity-selectivity trade-off and rapid deactivation by coke deposition remain challenges for future applications. Here, we select Pd/TiO2 as model catalysts and design spatially separated redox centers on the rutile phase catalyst (Pd/R-TiO2), which enable parallel adsorption and independent activation of C3H8 on metallic Pd sites and N2O on oxygen vacancies. Besides, it suppresses product overoxidation by reducing reactive oxygen species concentration near C3 intermediates, enhancing C3H6 selectivity while inhibiting enolic intermediate and coke formation to ensure catalyst stability. Hydrogen spillover from Pd sites to TiO2 surface connects the separated redox reactions, completing the catalytic cycle. This work presents a rational strategy for catalyst design in N2O-ODHP, contributing to the sustainable mitigation of non-CO2 greenhouse gases.
研究领域:
催化化学
·
环境化学
·
化学工程
·
绿色化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）