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Industrial Crops and Products
Elsevier Science Publishers
Industrial Crops and Products

Elsevier Science Publishers

0926-6690

Industrial Crops and Products/Journal Industrial Crops and ProductsSCIISTPEI
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    A bio-inspired dynamic filter with unidirectional channels based on cross-linked cellulose loading palladium nanoparticles for catalytic reduction of 4-nitrophenol

    Hu, Run-ZeZhang, Xiao-QiYao, Xiao-HuiYang, Jia-Xin...
    15页
    查看更多>>摘要：To remove the pollutants nitrophenol in wastewater, a bio-inspired dynamic filter (CE-Pd-EPI) with in-situ synthesized palladium nanoparticles (PdNPs) was prepared via chemical cross-linking and freeze casting. This bio-inspired filter has a hierarchical dual-porous structure with micron-scale unidirectional channels and nanoscale pores. This hierarchical porous structure facilitates rapid mass transfer of the liquid. Therefore, this filter can completely reduce 4-nitrophenol (4-NP, 2 mM) in 3 min. The rate constant (k) and turnover frequency (TOF) are 2.42 min(- 1) and 13.17 min (1), respectively, which are better than most reports so far. Moreover, this filter can also instantaneously catalyze the reduction of methylene blue (MB) to colorless. After five cycles, the conversion of 4-NP and MB by the filter still reaches 99.9%, demonstrating its excellent catalytic stability and reusability. In addition, in a continuous fluid catalytic system this filter has a low pressure (only 0.84 kPa) due to its bio-inspired unidirectional channel structure, which is extremely important for continuous industrial application. This bio-inspired dynamic filter has a guiding significance for the removal of organic pollutants in wastewater in industrial applications. Therefore, the bio-inspired dynamic filter described in this study has a great potential in the field of water treatment and environmental protection.
      原文链接:
    • NSTL
    • Elsevier

    A new biosource for synthesis of activated carbon and its potential use for removal of methylene blue and eriochrome black T from aqueous solutions

    Bilal, MuhammadAkhtar, KalsoomFagieh, Taghreed M.Danish, Ekram Y....
    12页
    查看更多>>摘要：Flora is a cheap, eco-friendly and recycling source of activated carbon. In this study, activated carbon (AC) was prepared from Datura metel seeds (D. M. seeds). The prepared AC was then used as a bioadsorbent for the removal of cationic and anionic dyes. Initially, the AC was prepared by pyrolysis method and then characterized by using different techniques such as FTIR, BET, SEM, EDX and XRD. From the EDX analysis, it was found that the carbon contents was drastically increased from 65 to 85.5 by atomic%, while XRD analysis concluded the formation of graphitic carbon due to the presence of peak at 25. 2theta position. Different parameters were tested to assess the effectiveness of biomass and the prepared AC toward adsorption of two dyes i.e. methylene blue (MB) and Eriochrome black T (EBT). The results demonstrated that adsorption of MB and EBT were remarkably boosted with rising concentration of the dyes and the agitation speed. In contrast, it significantly decreased with rising the temperature, and the highest adsorption was observed at 10 degrees C. From contact time, it was found that equilibrium position was achieved in 60 min for both MB and EBT. The study of alteration of pH indicated that the optimum pH for adsorption of MB and EBT was 6 and 2, respectively. The current data for both the dyes well follow Langmuir isotherm compared to the Freundlich isotherm. Additionally, the adsorption process dynamics was measured in terms of rate constant and it was found that data well follow pseudo-2nd kinetic model. Generally, the adsorption of EBT was higher than MB on the prepared AC. These findings proposed that AC prepared from D. M. seeds is a promising alternative adsorbent that could be utilized as an efficacious adsorbent for the removal of cationic and anionic dyes.
      原文链接:
    • NSTL
    • Elsevier

    Almond hull biomass: Preliminary characterization and development of two alternative valorization routes by applying innovative and sustainable technologies

    Salgado-Ramos, ManuelMarti-Quijal, Francisco J.Huertas-Alonso, Alberto J.Sanchez-Verdu, M. Prado...
    10页
    查看更多>>摘要：Almonds are considered one of the most valuable fruits worldwide due to its high nutritional value. Moreover, a growing attention has been paid over the last years to other parts of the fruit, such as skins, shells or hulls, which are commonly found as almond by-products and scarcely exploited for valorization. In this study, two approaches were evaluated. Firstly, a green innovative processing technology, pulsed electric fields (PEF), was applied for the first time to assist the extraction of antioxidant compounds from almond hull biomass (AH). In particular, this technology was used with the aim of developing a feasible valorization strategy, being a sustainable alternative for polyphenols extraction compared to traditional methods. Then, the total phenolic content (TPC) and the antioxidant activity (TEAC and ORAC values) were measured, obtaining a higher extraction of TPC and TEAC values when PEF was used compared to conventional soaking. Secondly, the characterization of AH by means of fiber, ultimate and proximate analysis was carried out. Ultimate and proximate analysis provided information about the exploitation towards bioenergy and biofuels, demonstrating the so-called derived AH-EFB being useful for that purpose. Moreover, the high percentage in terms of carbohydrates suggests that AH could be a useful source for high-added-value chemicals, such as levulinic acid, furfural and 5-hidroximethylfurfural, displaying an interesting energetic valorization route for this biomass.
      原文链接:
    • NSTL
    • Elsevier

    Preparation and characterization of nanocomposite films based on different ratios of cellulose nanocrystal and cellulose nanofiber

    Hua, YiwenChen, TianyingTang, Yanjun
    9页
    查看更多>>摘要：Cellulose nanomaterials (CNs) are of increasing interest due to their appealing inherent properties and show great promise in various applications such as reinforcing agent and barrier membrane. In this work, nano composite films composed with cellulose nanofiber (CNF) and cellulose nanocrystal (CNC) were prepared via vacuum filtration method. The effects of CNF/CNC ratios on the rheological behavior of nanocomposite suspension as well as the transparency, barrier performance, mechanical properties and thermal stability of nanocomposite films were investigated, and the microstructure of nanocomposite films was characterized. The results indicated that equal proportion of CNF and CNC appeared to be the optimal state for nanocomposite film preparation, at which the nanocomposite films exhibited compact network structures, desired thermal stability, a tensile strength of 60.5 MPa, water vapor transmittance of 923.9 g/m(2)/24 h (38 C, 100% RH) and transparency of up to 92.7%. This work provides an effective and scalable approach for the preparation of nanocellulose based films with high performance, which may hold great promise in the biodegradable materials for advanced packaging applications.
      原文链接:
    • NSTL
    • Elsevier

    Acer triflorum as a new nervonic acid-containing oilseed resource for the future: Fruit-and-seed weight, oil content and fatty acid composition

    Qiao, QianHu, KerenWu, ChongWang, Jiawei...
    10页
    查看更多>>摘要：To develop and utilize the oil of Acer triflorum and explore natural resources rich in nervonic acid, 20 individual plants were used in trial collections to determine the oil and fatty acid contents of their seeds. The results showed that the average oil content ranged from 28.83%-48.52%, with an average of 36.31%, indicating the plant is potential as a new species with high seed oil content. The oil was mainly composed of two saturated fatty acids (palmitic acid, stearic acid) and six unsaturated fatty acids (oleic acid, linoleic acid, linolenic acid, arachidonic acid, erucic acid, nervonic acid). The average total content of the unsaturated fatty acids was 91.98%, where linoleic acid was 44.95%, erucic acid was 12.47%, and nervonic acid was 4.69%, indicating that A. triflorum seed oil has stable and high unsaturation characteristics and high nutritional value. The coefficients of variation (CV) for13 seed oil traits ranged from 0.47% to 12.40%, among which the CV for the oil content was the highest (12.40%), the CV for the total unsaturated fatty acids content was the lowest (0.47%), the CV for erucic acid was 2.54%, and that of nervonic acid was 6.37%. These results suggest that A. triflorum has potential as a new plant with a high content of valuable fatty oils. Meanwhile, extremely significant differences in the oil content and fatty acids content in the kernels of A. triflorum were observed among individuals, which provided the basis for screening germplasm resources for high oil, high nervonic acid and low erucic acid contents. Correlation analysis showed that the fuller the fruit and seed, the higher the oil content and seed oil quality. Based on the characteristics of the various fruit-and-seed weights and seed oils, one plant exemplifying excellent "high oil and low erucic acid " ('WN181') characteristics and another plant exemplifying excellent "high oil and nervonic acid " ('GGC260') characteristics were selected preliminarily. This study showed that A. triflorum could be developed into a renewable woody oil species, and its seeds could be used as raw materials for extracting nervonic acid.
      原文链接:
    • NSTL
    • Elsevier

    Preparation of size-controlled all-lignin based carbon nanospheres and their electrochemical performance in supercapacitor

    Wang, HangXiong, FuquanYang, JiameiMa, Bole...
    10页
    查看更多>>摘要：Lignin, as the second most abundant biomass material in nature, is regarded as an ideal carbon precursor due to the presence of a larger amount of aromatic ring structural unit. Carbon nanospheres, as one of the vital members of carbon materials, are promising advanced materials for various areas. However, lignin-based carbon spheres suffered a complex fabrication process, high crosslinking between spheres, and non-adjustable micron size. Here, all-lignin based carbon nanospheres (LCNS) with tunable size and microstructure were prepared via self assembly, stabilization treatment, and carbonization. Subsequently, their applications in supercapacitor electrode material were investigated. The results showed that the monodispersed, ordered, and regular carbon nanospheres could be constructed. The size of LCNS could be tuned ranging from 256 to 416 nm via changing the initial concentration of lignin between 0.5 and 2 mg mL(-1). The as-prepared LCNS provided a specific surface area between 652 and 736 m(2) g(-1) through adjusting the size and microstructure. When the LCNS was assembled into the electrochemical capacitor, the LCNS electrode materials exhibited a high specific capacitance of 147 F g(-1). Additionally, the LCNS-based symmetrical capacitor showed an ultralow characteristic relaxation time (0.86 s) and long cycle stability for 10,000 cycles. The capacitance properties could be regulated via reconciling the size of nanospheres and microstructure induced by carbonization temperature. The governable capacitance performance indicates that the as-prepared LCNS should be a promising candidate material for energy storage.
      原文链接:
    • NSTL
    • Elsevier