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Bioremediation of Petroleum Contaminated Water and Soils in Tunisia

机译：突尼斯石油污染的水和土壤的生物修复

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摘要

The petrochemical industry generates series of liquid and solid wastes containing large amounts of priority pollutants during the petroleum-refining process. These residues must be treated through depuration processes. The bioremediation process, presenting countless advantages in relation to other processes employed, is an evolving method for the removal and the transformation of many environmental pollutants including those produced by the petroleum industry. In a first step, a continuously stirred tank bioreactor (CSTR) was used to optimize feasible and reliable bioprocess system for successful bioremediation of industrial effluent and to develop an efficient microbial consortium for the degradation of petroleum hydrocarbons. After an experimental period of 175 days, the process was shown to be highly efficient in decontaminating the wastewater. The performance of the bio augmented reactor was demonstrated by the reduction of COD rates up to 95%. Six microbial isolates from the CSTR were characterized and species identification was confirmed by sequencing the 16 S rRNA genes. Besides, the treated wastewater could be considered as non toxic according to the micro-toxicity test. In a second step, bioremediation of a refinery soil containing hydrocarbons climate was investigated. The objective of this study was to assess the ability of bioremediation technique in the presence of the acclimatized consortium to reduce the total petroleum hydrocarbon (TPH) content in the contaminated soil. Results clearly demonstrated that an enhanced bioremediation was carried when the acclimatized bacterial consortium was added to the hydrocarbons contaminated soil. The proposed bioremediation technology has proved significantly higher hydrocarbons removal efficiencies. TPH analysis showed that 50% of the hydrocarbons were eliminated during the first 15 days of bio remediation. TPH removal reached 96% at the end of the treatment. Further, GC/MS profile has proved that the acclimatized bacterial consortium could effectively remove the medium- and long-chain alkanes in the contaminated soil such as the alkanes were undetectable after a 30-day of incubation period. In a third step, a Halomonas sp. strain C2SS100 had been isolated and characterized from Sercina petroleum reservoir. The strain had shown potential hydrocarbon degradation under halophilic condition (100 g l~(-1) NaCl). During growth on n-Hexadecane (C_(16)), C2SS100 produced biosurfactant that could solubilise phenanthrene, a three-ring aromatic hydrocarbon. The halophilic character of this bacterium could add further advantages for its use in marine and saline environments-oil bioremediation.
机译：石油化工在炼油过程中会产生一系列含有大量优先污染物的液体和固体废物。这些残留物必须通过净化过程进行处理。生物修复工艺相对于所采用的其他工艺具有无数优势，是一种不断发展的方法，用于去除和转化许多环境污染物，包括石油工业产生的污染物。第一步，使用连续搅拌釜式生物反应器（CSTR）优化可行和可靠的生物工艺系统，以成功地对工业废水进行生物修复，并开发出高效的微生物财团来降解石油烃。经过175天的实验期后，该工艺在净化废水中被证明是高效的。生物增强反应器的性能通过降低COD率达95％来证明。表征了来自CSTR的六种微生物分离物，并通过对16 S rRNA基因进行测序确认了物种鉴定。此外，根据微毒性测试，处理后的废水可以被认为是无毒的。第二步，研究了含碳氢化合物气候的精炼土壤的生物修复。这项研究的目的是评估在有适应环境的财团存在的情况下生物修复技术减少受污染土壤中总石油烃（TPH）含量的能力。结果清楚地表明，将适应气候变化的细菌聚生体添加到被碳氢化合物污染的土壤中，可以增强生物修复作用。所提出的生物修复技术已证明具有更高的碳氢化合物去除效率。 TPH分析表明，在生物修复的前15天中消除了50％的碳氢化合物。在治疗结束时，TPH去除率达到96％。此外，GC / MS资料已证明，经过驯化的细菌聚生体可以有效去除受污染土壤中的中链和长链烷烃，例如在孵育30天后无法检测到烷烃。第三步是Halomonas sp.。已从Sercina石油储层中分离并鉴定了菌株C2SS100。该菌株在盐溶液（100 g l〜（-1）NaCl）条件下表现出潜在的烃降解作用。在正十六烷（C_（16））上生长期间，C2SS100产生了可以溶解菲（一种三环芳香烃）的生物表面活性剂。该细菌的嗜盐特性为其在海洋和盐碱环境中的应用（油生物修复）可增加更多优势。

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  • 来源
    《Clean soil and safe water.》|2011年|p.153-165|共13页
  • 会议地点 Belgrade(RS)
  • 作者

    Boutheina Gargouri; Sami Mnif; Fathi Aloui; Fatma Karray; Najla Mhiri; Mohamed Chamkha; Sami Sayadi;

  • 作者单位

    Laboratoire des Bioprocedes Environnementaux, Pole d'Excellence Regional AUF-LBPE,Centre de Biotechnologie de Sfax, Universite de Sfax, BP 1117, 3018 Sfax, Tunisia;

    Laboratoire des Bioprocedes Environnementaux, Pole d'Excellence Regional AUF-LBPE,Centre de Biotechnologie de Sfax, Universite de Sfax, BP 1117, 3018 Sfax, Tunisia;

    Laboratoire des Bioprocedes Environnementaux, Pole d'Excellence Regional AUF-LBPE,Centre de Biotechnologie de Sfax, Universite de Sfax, BP 1117, 3018 Sfax, Tunisia;

    Laboratoire des Bioprocedes Environnementaux, Pole d'Excellence Regional AUF-LBPE,Centre de Biotechnologie de Sfax, Universite de Sfax, BP 1117, 3018 Sfax, Tunisia;

    Laboratoire des Bioprocedes Environnementaux, Pole d'Excellence Regional AUF-LBPE,Centre de Biotechnologie de Sfax, Universite de Sfax, BP 1117, 3018 Sfax, Tunisia;

    Laboratoire des Bioprocedes Environnementaux, Pole d'Excellence Regional AUF-LBPE,Centre de Biotechnologie de Sfax, Universite de Sfax, BP 1117, 3018 Sfax, Tunisia;

    Laboratoire des Bioprocedes Environnementaux, Pole d'Excellence Regional AUF-LBPE,Centre de Biotechnologie de Sfax, Universite de Sfax, BP 1117, 3018 Sfax, Tunisia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境保护管理;环境保护管理;
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