Biosorption and biodegradation of phenanthrene and pyrene in sterilized and unsterilized soil slurry systems stimulated by Phanerochaete chrysosporium

Chen, Baoliang; Ding, Jie

doi:10.1016/j.jhazmat.2012.05.090

Cited by 50 publications

(24 citation statements)

References 40 publications

(92 reference statements)

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“…The biosorption isotherms for OS are linear, indicating that the primary mechanism of sorption is partitioning into algae biomass. This observation is consistent with the previous report on fungal biomasses Chen and Ding, 2012) and plant cuticular materials (Chen et al, 2005). The linear biosorption isotherms of Phen by the LP fractions are consistent with the other studies for free lipid fractions isolated from sediments and soils (Zhang et al, 2012;Wen et al, 2007;Wang and Xing, 2007b).…”

Section: Biosorption Isothermssupporting

confidence: 93%

Biosorption of phenanthrene by pure algae and field-collected planktons and their fractions

Zhang

Ran²,

Yang

et al. 2013

Chemosphere

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Section: Biosorption Isothermssupporting

confidence: 93%

Biosorption of phenanthrene by pure algae and field-collected planktons and their fractions

Zhang

Ran²,

Yang

et al. 2013

Chemosphere

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“…1). Compared with previous findings (Chen and Ding 2012;Peng et al 2010;Xu et al 2006), pyrene dissipation in both soils was relatively more rapid in this study. It was likely due to the rapid enrichment of activated indigenous degraders in response to the presence of pyrene, which would result in higher pyrene degradation (>96 %) in 1-month incubation (Hamdi et al 2007).…”

Section: Dissipation Of Pyrenecontrasting

confidence: 95%

Enrichment of functional microbes and genes during pyrene degradation in two different soils

2015

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Purpose Stimulating microbial degradation is a promising strategy for the remediation of soils contaminated with polycyclic aromatic hydrocarbons (PAHs). To better understand the functional microbial populations and processes involved in pyrene biodegradation in situ, the dynamics of pyrene degradation and functional microbial abundance were monitored during pyrene incubation in soils. We hope our findings will provide new insights into in situ pyrene biodegradation in soils and help to identify functional microbes from soils. Materials and methods Pyrene (60 mg kg −1 ) was incubated with two different soils, one is lower PAH-containing agricultural soil (LS), and the other is higher PAH-containing industrial soil (HS). During incubation, triplicate samples were collected on days 0, 3, 7, 14, and 35. Pyrene in soil samples was analyzed using an Agilent gas chromatograph (7890A) equipped with a mass-selective detector (model 5897). DNA in soils was extracted with a FastDNA Spin kit for soil (Bio101, USA). The abundance of functional microbes and genes was monitored by a Taqman or SYBR Green based realtime PCR quantification using an iCycler iQ5 themocycler (Bio-Rad, USA). The diversity of PAH-RHDα GP genes was evaluated by constructing clone libraries and sequencing.Results and discussion In both soils, more than 80 % of the added pyrene was degraded within 35 days. After 35-day incubation, there was a significant enrichment of Gram-positive bacteria harboring PAH-ring hydroxylation dioxygenase ( PA H -R H D α G P ) g e n e s , a n d t h e a b u n d a n c e o f Mycobacterium increased significantly. In PAH-RHD α GP clone libraries from two soils, Mycobacterium was detected, while most sequences were closely related to uncultured Gram-positive bacteria. In addition, two pyrene catabolic pathways might be involved in pyrene degradation, as pyrene dioxygenase genes, nidA and nidA3, were dramatically enriched during incubation. Moreover, the abundance and diversity of potential degraders in two soils showed significantly difference in responding to pyrene stress. This result indicates that soil condition can significantly affect functional microbial populations and biological process for pyrene biodegradation. Conclusions These results revealed that Mycobacterium as well as uncultured Gram-positive PAH-RHD α genotypes may be the important group of pyrene degraders in soils, and two pyrene catabolic pathways, targeted by nidA and nidA3, might potentially contribute to in situ biodegradation of pyrene. This study characterized the response pattern of potential pyrene degraders to pyrene stress in two different soils, which would increase our understanding of the indigenous processes of pyrene biodegradation in soil environment.

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“…demonstrated that the mechanism of fungal growth ranges from compact (dense) pellets to dispersed mycelia at high biomass concentrations. In previous reports, continuous bioreactor operation was started using 10 g L −1 , 50 g L −1 , and 5 g L −1 , of glucose, during the first 4 days of reactor start‐up in order to use glucose as the carbon source for the reduction of selenite rich wastewaters.…”

Section: Discussionmentioning

confidence: 99%

Simultaneous removal of selenite and phenol from wastewater in an upflow fungal pellet bioreactor

Werkneh

Rene

Lens

2017

J of Chemical Tech & Biotech

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BACKGROUND The simultaneous treatment of wastewater containing selenite and phenol in batch and continuous systems, inoculated with pellets of Phanerochaete chrysosporium, was evaluated in this study. RESULTS Synthetic oil refinery wastewater containing 15 mg L−1 selenite and 100–600 mg L−1 phenol was used in batch incubations for 5 days. Orange‐red colored pellets developed during selenite incubations in the presence of up to 400 mg L−1 of phenol, which confirms the formation of elemental selenium with removal efficiencies ranging from 57–78.5% and 75–90.8% for, respectively, phenol and selenite. Continuous experiments in two upflow fungal pelleted bioreactors (30 °C, pH 4.5, hydraulic retention time of 16.7 h) fed the synthetic oil refinery wastewater containing phenol or phenol with selenite were performed for 38 days. The maximum removal efficiency of phenol in the fungal bioreactor was 100% (up to day 26). CONCLUSION Selenite mass balance showed that the overall maximum removal efficiency of selenite in the presence of phenol was 67.3%. The critical phenol and selenite loading rates of the upflow bioreactors were ∼12 and 4.3 mg L−1 h−1, respectively. © 2017 Society of Chemical Industry

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Biosorption and biodegradation of phenanthrene and pyrene in sterilized and unsterilized soil slurry systems stimulated by Phanerochaete chrysosporium

Cited by 50 publications

References 40 publications

Biosorption of phenanthrene by pure algae and field-collected planktons and their fractions

Biosorption of phenanthrene by pure algae and field-collected planktons and their fractions

Enrichment of functional microbes and genes during pyrene degradation in two different soils

Simultaneous removal of selenite and phenol from wastewater in an upflow fungal pellet bioreactor

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