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Degradation of disperse blue 2BLN by oleaginous C. sorokiniana XJK

机译：Dereagilous C. Sorokiniana XJK分散蓝2bln的降解

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摘要

In this study, an oil-producing freshwater microalgae Chlorella sorokiniana XJK was identified and used for the degradation of disperse blue 2BLN. According to the decolorization rate, the optimal conditions were found to be as follows: initial dye conc. = 60 mg L-1, initial biomass density = 8 x 10(6) cell per mL, initial pH = 4, light intensity 470 mu mol (m(2)s)(-1) and CO2/air (v/v) ratio = 1%. The decolorization rate reached up to 83% in 6 days cultivation with Chlorella sorokiniana XJK, which also obtained 570 mg L-1 of biomass and 43% of lipid content under the optimum conditions. Moreover, the enzyme activities (laccase and manganese peroxidase) in XJK were determined to be 3.89 U mL(-1) and 4.86 U mL(-1), respectively, which played a significant role in dye decolorization. The degradation products of the dye were analyzed by UV-vis, FTIR and GC-MS methods. This revealed that the major chromophore group was broken down and disperse blue 2BLN was converted into several low-molecular compounds including dibutyl phthalate, ethylbenzene and ethyl acetate during the microalgae-based treatment. This indicated that XJK shows a potential for dye degradation and providing materials for biofuel.
机译：在这项研究中，鉴定了一种产生的淡水微藻小球藻氏菌Xjk，并用于分散蓝2bln的降解。根据脱色率，发现最佳条件如下：初始染料浓度。 = 60mg L-1，初始生物质密度= 8×10（6）克，初始pH = 4，光强470μmol（m（2）s）（ - 1）和CO2 /空气（v / v比例= 1％。脱色率达到6天培养的83％，XJK培养高达83％，其在最佳条件下也获得了570mg L-1的生物质和43％的脂质含量。此外，XJK中的酶活性（漆酶和锰过氧化物酶）分别为3.89uml（-1）和4.86uml（-1），这在染料脱色中发挥了重要作用。通过UV-Vis，FTIR和GC-MS方法分析染料的降解产物。这揭示了主要的发色团组分裂，分散蓝2bln被转化为几种低分子化合物，包括邻苯二甲酸二丁酯，乙基苯和乙酸乙酯在微藻的处理过程中。这表明XJK显示了染料劣化和为生物燃料提供材料的潜力。

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  • 来源
    《RSC Advances》 |2016年第108期|共10页
  • 作者

    Xie Li; Zhou Lin; Liu Tingting; Xu Xiaolin;

  • 作者单位

    Shihezi Univ Sch Chem &

    Chem Engn Key Lab Green Proc Chem Engn Xinjiang Bingtuan Shihezi 832003 Peoples R China;

    Shihezi Univ Sch Chem &

    Chem Engn Key Lab Green Proc Chem Engn Xinjiang Bingtuan Shihezi 832003 Peoples R China;

    Shihezi Univ Sch Chem &

    Chem Engn Key Lab Green Proc Chem Engn Xinjiang Bingtuan Shihezi 832003 Peoples R China;

    Shihezi Univ Sch Chem &

    Chem Engn Key Lab Green Proc Chem Engn Xinjiang Bingtuan Shihezi 832003 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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