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    30 September 2008, Volume 42 Issue 5 Previous Issue    Next Issue
    The Preliminary Study of Non-drying Oil Polymerization
    WANG Hai-qing;LONG Xiao-yan;WANG Zheng-hui
    2008, 42 (5):  1-4. 
    Abstract ( 591 )   PDF (986KB) ( 835 )   Save
    The polymerization results of non-drying oil including soybean oil and lard with ethyl acrylate and ethylene glycol dimethacrylate as accelerators, as well as benzoyl peroxide and dimethyl aniline as initiators, were prelimilarily reported in this paper. When the mass ratio of soybean oil to lard was 6 to 4, the mass percentages for biomass mixed oil, ethyl acrylate, ethy-lene glycol dimethacrylate were 40%, 55%, 5%, respectively, and the initiator accounted for 1% in total material, a polymer with hard rubber status was obtained at room temperature in 5min. The FT-IR spectra provided the evidence that non-drying oil took part in polymerization. The TG data showed that the polymer with 40% oil had excellent thermal stability below 240℃.
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    Study on Membrane Technology in Recycle of Industrial Phenolic Wastewater Treatment
    LIU De-biao;KUANG Cai-yuan;TAN Jun-li;CHEN Yu-ping;TANG Jian-qiang;JIANG Jian-chun
    2008, 42 (5):  33-36. 
    Abstract ( 568 )   PDF (894KB) ( 735 )   Save
    The UF and RO membranes are used for the treatment of industrial phenolic water. After treatment the qualities of both circulating water and reclaimed water are quite good and could meet the demand for the water used for boiler.
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    Research and Application of Thermoplastic Nanocomposites
    WANG Dan;SONG Zhan-qian;SHANG Shi-bin
    2008, 42 (5):  51-55. 
    Abstract ( 668 )   PDF (885KB) ( 868 )   Save
    Properties and application of thermoplastic nanocomposites were briefly summarized. Thermoplastic nanocomposites reinforced by inorganic nanometer particles, inorganic whiskers, and cellulose nanocrystals were introduced respectively. Some problems of this research field were described, and the novel nanocomposites with high performance were exploiting.
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    Research Progress on Anti-tumor Compounds from Ginkgo biloba Extracts
    FANG Jing;TAN Wei-hong
    2008, 42 (5):  56-60. 
    Abstract ( 569 )   PDF (904KB) ( 1049 )   Save
    Ginkgo biloba Linn. extracts and their preparations were primarily used in clinical treatment of cardiovascular and cerebrovascular disease and pathological changes of central nerve system. In recent investigations, many compounds of G. biloba extracts have exhibited potent anti-tumor activities both in vitro and in vivo tumor model studies. In this review, the recent progress on the anti-tumor research of G. biloba derived polyprenols, polysaccharides and ginkgolic acids was introduced.
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    Study on Central Digital Monitoring and Control System (CDMCS) of Pilot-plant Equipments for Terpene Chemicals
    ZHENG Wen-hui;ZHAO Zhen-dong;BI Liang-wu;WANG Jing;LI Dong-mei;GU Yan
    2008, 42 (5):  15-20. 
    Abstract ( 568 )   PDF (1268KB) ( 826 )   Save
    A central digital monitoring and control system (CDMCS) for the terpene chemicals pilot-plant equipments and their process flows is researched and developed, which includes a friendly man-machine operation interface, a combinatory real-time control system, integrated means for measurement and control of processing parameters, and functions which show and putout intelligent report forms and record curves. Based on analysing and studying the present conditions, situations and features of existing terpene chemicals pilot-plant process and equipments, the DCS techniques application and implementation solutions to the process and equipments are introduced for central monitoring control system integration as well as digitalization in this paper. The upgraded terpene chemicals pilot-plant which is integrated from equipments, process and CDMCS has been actually used in charge, and successfully run for 90 days. The results show that the system possesses high accuracy of monitoring and controlling, excellent reliability, satiability and convenience of operations, and provides highly qualitative processing test data as expected and designed.
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    Preparation and Characterization of Palladium/ Bamboo-charcoal (Pd/BC) Catalyst
    ZENG Tao;YANG Yan-chun
    2008, 42 (5):  25-29. 
    Abstract ( 609 )   PDF (1769KB) ( 696 )   Save
    The Pd/BC catalyst was prepared through improving the loading process and modifying the bamboo charcoal. The optimal condition is the volume ratio of H2O2 to HClO4 is 1:1 in modifying process, the volume ratio of H2O2 to NaClO is 5:1 in oxidation loading process. The activity of Pd/BC catalyst is better than that of commercial product which has palladium content of 5%.
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    Study on Selective Degradation of Corn Straw Cells by 8 Fungi
    ZENG Wei;CHEN Hong-zhang
    2008, 42 (5):  9-14. 
    Abstract ( 359 )   PDF (1263KB) ( 699 )   Save
    It is difficult to be utilized at high-value for corn straw,because of its heterogeneity in constitution. This paper aims to find a fungus which can selectively degrade parenchyma cell of corn straw, and the residual fiber can be used in pulping and papermaking. In this paper, seven pathogenic fungi separated from sugarcane with pineapple disease, and Trichoderma viride were used to degrade fiber and parenchyma cell carded and sifted from steam-exploded corn straw respectively. It was shown that the degradabilities of these 8 fungi to parenchyma cell were more than those to fiber. The reason of above difference was concerned with the fungi enzyme activity and structure of material by determination of enzyme activity and study of scanning electron micrograph. Among these 8 fungi, fungus C-2 had the best selective degradation to parenchyma cell, and the difference of weight loss rate of parenchyma cell with fiber was 17.88%.
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    Study on Activated Carbons from the Coniferous Wood in the South China and the Broad-leaved Wood in the North China by ZnCl2 Activation
    GONG Jian-ping;LIN Mu-sen;ZHANG Yan-ping
    2008, 42 (5):  30-32. 
    Abstract ( 411 )   PDF (808KB) ( 807 )   Save
    Activated carbons were prepared from the coniferous wood in the South China (China fir and mason pine) and the broad-leaved wood in the North China (paulownia and polar), respectively, using zinc chloride as activating agent. The Baume degree of zinc chloride is 45, 48, 53 for impregnation. The end activation temperature is 650℃.The activated time is 2 h. The adsorption capacity of the resultant activated carbons was analyzed by measuring methylene blue decolorization, caramel adsorption, iodine adsorption value, xylose decolorization, lactic acid decolorization, cystine decolorization and DOP decolorization. Yield and ash content were also analyzed . The activated carbons prepared from the South China woods have the rich macropores, the strong absorbtion ability to large coloring matter molecules,high yield and low ash content.The activated carbons prepared from the North China woods have the rich mircopores, the strong absorbtion ability to small coloring matter molecules,low yield and high ash content. Since the activated carbons made from coniferous wood in South China and the broad-leaved wood in North China have great differences in decoloring ability, their preparing process should be different.
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    Research Progress of Bio-oil Application Technology in Diesel Engine
    TAN Jian;SUN Shu-sheng;ZHU Xi-feng
    2008, 42 (5):  43-45. 
    Abstract ( 604 )   PDF (809KB) ( 854 )   Save
    Properties of bio-oil and main research progress of bio-oil used as disel engine fuel are reviewed, including direct application, additive-modification, dual-fuel system, emulsification and refining. The main technology problems and the possible resolvents are also summarized.
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    Preparation of β-Glucosidase by Aspergillus niger in Submerged Fermentation
    LIU Min;OUYANG-Jia;YONG Qiang;YU Shi-yuan
    2008, 42 (5):  5-8. 
    Abstract ( 589 )   PDF (1006KB) ( 870 )   Save
    The effects of culture condition on β-glucosidase preparation by Aspergillus niger in submerged fermentation and the apparent enzymatic properties of β-glucosidase were investigated. Wheat bran was the optimal inducer of β-glucosidase among tested carbon sources. The optimal culture condition of β-glucosidase preparation by A. niger in submerged fermentation was 40mL medium in 250mL shake flask, the inoculation was 8%, the initial pH value was 5.5, the culture temperature and rotation speed of Incubator Shaker were 30℃ and 170r/min, respectively, and the highest β-glucosidase activity of 19.12IU/mL was obtained for 10 days cultivation. The optimal temperature and pH value of β-glucosidase reaction was 65℃ and 4.8, respectively. The β-glucosidase was stable under 40℃ and in the environment pH value of 3.0-5.0.
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    Experimental Research on the Direct Liquefaction of Paulownia in Water to Make Bio-oil
    SUN Pei-qin;DENG Yun-biao;SUN Shao-hui;CHEN Jun-wu
    2008, 42 (5):  21-24. 
    Abstract ( 415 )   PDF (940KB) ( 676 )   Save
    The bio-oil was prepared by direct liguefaction of paulownia with water as solvent and Na2CO3 catalyst in a 1L high pressure reactor. The experimental result showed that the optimal condition for liquefaction was 50g of raw material,480mL of water,5% of catalyst,330r/min of stirring rate, 5-10min of reaction time, and 300-315℃of liquefaction temperature. The total yield of bio-oil could be over 60% and the char yield could be below 2%.
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    Research Advances in Anaerobic Bioreactor for Wastewater Treatment
    PAN Ai-xiang;SHI Ying-qiao;DING Lai-bao;FANG Gui-gan
    2008, 42 (5):  37-42. 
    Abstract ( 571 )   PDF (1091KB) ( 1659 )   Save
    Development process and research advances on anaerobic bioreactor were reviewed in details. Characteristics and application of anaerobic bioreactor were summarized. Its future trends were pointed as well.
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    Developments of Spray Drying in Processing and Utilization of Biomass Materials
    ZHANG Cai-hong;HUANG Li-xin
    2008, 42 (5):  46-50. 
    Abstract ( 654 )   PDF (865KB) ( 975 )   Save
    Spray drying technology was found to be widely used in many industries. This paper summarized the developments of spray drying of biomass materails in terms of processing, mechanism, quality of product and economically utilization of energy etc. The review showed that there were some problems which needed to be improved in term of process and equipment. For examples, the product quality was degraded due to high inlet temperature, wall deposits existed in drying chamber or process pipes, energy efficency was low and active contents in the biomass were damaged, etc. Therefore the further investigation in spray drying technology was necessary.
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