In situ bioremediation of monoaromatic pollutants in groundwater: A review

Farhadian, Mehrdad; Vachelard, Cédric; Duchez, David; Larroche, Christian

doi:10.1016/j.biortech.2007.10.025

Cited by 349 publications

(150 citation statements)

References 160 publications

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“…In view of BTEX Fig. 3A, ORC reagent exhibits a higher degradative efficiency if compared to HRC (see B and C data series), as expected that mono-aromatic pollutants are more sensitive to oxidation processes than to reduction ones (Farhadian et al, 2008). Considering the blanks Fig.…”

Section: Discussionsupporting

confidence: 60%

“…Degradation processes based on the direct metabolism of pollutants generally concern hydrocarbons with less than 20-25 Carbon atoms in their molecule, Benzene, Toluene, Ethylbenzene and Xylene (BTEX) (Farhadian et al, 2008) and Polynuclear Aromatic Hydrocarbons (PAH). Cometabolic degradative processes usually involve Chlorinated Aliphatic Hydrocarbons (CAHs), Polychlorobiphenils (PCB) and pesticides.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Hydrogen/Oxygen Release Compounds for the Remediation of VOCs

Fiore¹

2011

American Journal of Environmental Sciences

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Problem statement: Volatile Organic Compounds (VOCs) were widespread in groundwater of industrialized areas and in situ remediation intervents characterized by a high environmental compatibility were of main interest. The scope of this study was the evaluation of the potential of two innovative reagents (HRC and ORC from Regenesis) for the remediation of Volatile Organic Compounds (VOCs). The reagents respectively perform reduction and oxidation mechanisms, both effective in the degradation of VOCs. Approach: Hydrogen Release Compound (HRC) and Oxygen Release Compound (ORC) were tested about the degradation of Benzene, Toluene, Ethylbenzene and Xylene (BTEX) and some Chlorinated Aliphatic compounds (CAHs). Five series of batch tests were performed with an artificial polluted aqueous phase and some soil coming from a polluted site in which natural attenuation of VOCs occurs. Results: ORC exhibited a good efficiency in degradation of BTEX and zero order model was found as a reliable approximation of experimental data (with the exceptions of benzene and toluene, for which a first order kinetic model was trustworthy), while HRC showed a good efficiency in the degradation of CAHs and a first order model consistently estimated almost all experimental data. The experimental data were modeled by means of different mathematical equations, considering zero and first order kinetics and the results were discussed and compared. Conclusions: On the grounds of the performed tests, Oxygen Release Compound (ORC) is effective in BTEX degradation and Hydrogen Release Compound (HRC) in CAHs removal.

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Section: Discussionsupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Evaluation of Hydrogen/Oxygen Release Compounds for the Remediation of VOCs

Fiore¹

2011

American Journal of Environmental Sciences

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“…Numerous positive traits have been attributed to Pseudomonas strains, ranging from denitrification (Zhang et al, 2011) (e.g. in wastewater treatments) to the degradation of toxic components (Farhadian et al, 2008;Khan et al, 2009) and the promotion of plant growth (Chin-A-Woeng et al, 2003;Daayf et al, 2003;De Curtis et al, 2010;Ghyselinck et al, 2013;Haas & Défago, 2005;Kim & Jeun, 2006;Scherwinski et al, 2008;Yan et al, 2002). However, the genus Pseudomonas also has a negative reputation, as it includes opportunistic human pathogens (Gershman et al, 2008) and plant pathogens (Mansfield et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

An rpoD gene sequence based evaluation of cultured Pseudomonas diversity on different growth media

et al. 2013

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The last decade has shown an increased interest in the utilization of bacteria for applications ranging from bioremediation to wastewater purification and promotion of plant growth. In order to extend the current number of micro-organism mediated applications, a continued quest for new agents is required. This study focused on the genus Pseudomonas, which is known to harbour strains with a very diverse set of interesting properties. The aim was to identify growth media that allow retrieval of a high Pseudomonas diversity, as such increasing the chance of isolating isolates with beneficial properties. Three cultivation media: trypticase soy agar (TSA), potato dextrose agar (PDA) and Pseudomonas isolation agar (PIA) were evaluated for their abilities to grow Pseudomonas strains. TSA and PDA were found to generate the largest Pseudomonas diversity. However, communities obtained with both media overlapped. Communities obtained with PIA, on the other hand, were unique. This indicated that the largest diversity is obtained by sampling from either PDA or TSA and from PIA in parallel. To evaluate biodiversity of the isolated Pseudomonas members on the media, an appropriate biomarker had to be identified. Hence, an introductory investigation of the taxonomic resolution of the 16S rRNA, rpoD, gyrB and rpoB genes was performed. The rpoD gene sequences not only had a high phylogenetic content and the highest taxonomic resolution amongst the genes investigated, it also had a gene phylogeny that related well with that of the 16S rRNA gene.

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“…Dentre os diversos processos que influenciam no destino de contaminantes, a biodegradação predomina no ambiente subsuperficial (KAO et al, 2010;BATTLE-AGUILAR et al, 2009;FRASER et al, 2008;FERIS et al, 2008). A elevada demanda bioquímica de oxigênio exercida pela presença de contaminantes orgânicos torna as condições do meio predominantemente anaeróbias (MACKAY et al, 2006;FERIS et al, 2008;CORSEUIL et al, 2011a;CORSEUIL et al, 2011b), fazendo com que processos anaeróbios assumam um papel de considerável importância para a biorremediação de diversos contaminantes (RAMOS et al, 2013;KLEINSTEUBER;SCHLEINITZ;VOGT, 2012;FARHADIAN et al, 2008;HOLLIGER et al, 1997), apesar de possuírem um potencial inferior de transferência de energia em relação aos processos aeró-bios (CHAPELLE, 2001). …”

Section: Introductionunclassified

Influência do biodiesel de soja na biodegradação anaeróbia do benzeno e tolueno

Schambeck

Ramos

Chiaranda

et al. 2015

Eng. Sanit. Ambient.

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A influência do biodiesel de soja na biodegradação dos hidrocarbonetos monoaromáticos benzeno e tolueno foi estudada sob condições anaeróbias em dois microcosmos montados com água subterrânea sintética, inóculo metanogênico, benzeno, tolueno e biodiesel. Na presença de biodiesel não foi observada biodegradação do benzeno e do tolueno. Com a biodegradação do biodiesel ocorreu a formação de acetato e metano, uso do sulfato e um aumento de 45 vezes no número de bactérias sulfato-redutoras.Esses resultados mostraram que, na mistura com benzeno e tolueno, o biodiesel foi biodegradado tanto sob condições de sulfato-redução quanto metanogênicas e que sua presença estimulou o crescimento da biomassa. Palavras

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In situ bioremediation of monoaromatic pollutants in groundwater: A review

Cited by 349 publications

References 160 publications

Evaluation of Hydrogen/Oxygen Release Compounds for the Remediation of VOCs

Evaluation of Hydrogen/Oxygen Release Compounds for the Remediation of VOCs

An rpoD gene sequence based evaluation of cultured Pseudomonas diversity on different growth media

Influência do biodiesel de soja na biodegradação anaeróbia do benzeno e tolueno

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