Fungal Bioremediation of Emerging Micropollutants in Municipal Wastewaters

Spina, Federica; Varese, Giovanna Cristina

doi:10.1007/978-3-319-42852-9_6

Cited by 4 publications

(3 citation statements)

References 133 publications

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“…Use of the harvested enzyme instead of a whole-cell preparation allows decoupling of fungal growth and pollutant degradation steps and this can be a suitable strategy to avoid bacterial contamination issues. The capacity of both crude and purified/commercially available extracellular LME for PPCP removal has been reported previously [27,41,42,80,81,82,83,84,85,86]. However, whole-cell fungi may achieve relatively better removal of a broader spectrum of pollutants than extracellular LME due to the availability of extracellular, intercellular and/or mycelium bound enzymes in addition to sorption of pollutants onto fungal biomass.…”

Section: Removal By Extracellular Lmementioning

confidence: 96%

Degradation of Pharmaceuticals and Personal Care Products by White-Rot Fungi—a Critical Review

et al. 2017

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White-rot fungi (WRF) mediated treatment can offer an environmentally friendly platform for the removal of pharmaceuticals and personal care products (PPCPs) from wastewater. These PPCPs may have adverse impacts on aquatic organisms and even human and thus their removal during wastewater treatment is of significant interest to the water industry. Whole-cell WRF or their extracellular lignin modifying enzymes (LMEs) have been reported to efficiently degrade PPCPs that are persistent to conventional activated sludge process. WRF mediated treatment of PPCPs depends on a number of factors including physicochemical properties of PPCPs (e.g., hydrophobicity and chemical structure) and wastewater matrix (e.g., pH, temperature, and dissolved constituents), type of WRF species and their specific extracellular enzymes. This review critically analyzes the performance of whole-cell WRF and their LMEs for the removal of PPCPs; particularly, it offers insights into PPCP removal mechanisms (e.g., biosorption vs. biodegradation) and degradation pathways as well as the formation of intermediate byproducts.

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Section: Removal By Extracellular Lmementioning

confidence: 96%

Degradation of Pharmaceuticals and Personal Care Products by White-Rot Fungi—a Critical Review

et al. 2017

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“…However, the extent of TrOC removal in whole-cell fungal treatment systems may vary depending on the type of WRF species or even the strain (Yang et al, 2013b). An alternative to wholecell WRF treatment is the use of crude or purified enzymes, thus separating fungal growth and pollutant degradation steps (Spina and Varese, 2016). Among the WRF enzymes, laccases have predominantly been used compared to lignin peroxidases because laccases do not require a cofactor for the oxidation of recalcitrant pollutants and have demonstrated better stability than peroxidases Riva, 2006;Wang et al, 2012).…”

Section: Properties and Performance Of Wrf And Their Ligninolytic Enzmentioning

confidence: 99%

Impact of wastewater derived dissolved interfering compounds on growth, enzymatic activity and trace organic contaminant removal of white rot fungi – A critical review

Asif

Hai

Hou

et al. 2017

Journal of Environmental Management

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White-rot fungi (WRF) and their ligninolytic enzymes have been investigated for the removal of a broad spectrum of trace organic contaminants (TrOCs) mostly from synthetic wastewater in lab-scale experiments. Only a few studies have reported the efficiency of such systems for the removal of TrOCs from real wastewater. Wastewater derived organic and inorganic compounds can inhibit: (i) WRF growth and their enzyme production capacity; (ii) enzymatic activity of ligninolytic enzymes; and (iii) catalytic efficiency of both WRF and enzymes. It is observed that essential metals such as Cu, Mn and Co at trace concertation (up to 1 mM) can improve the growth of WRF species, whereas non-essential metal such as Pb, Cd and Hg at 1 mM concentration can inhibit WRF growth and their enzyme production. In the case of purified enzymes, most of the tested metals at 1-5 mM concentration do not significantly inhibit the activity of laccases. Organic interfering compounds such as oxalic acid and ethylenediaminetetraacetic acid (EDTA) at 1 mM concentration are potent inhibitors of WRF and their extracellular enzymes. However, inhibitory effects induced by interfering compounds are strongly influenced by the type of WRF species as well as experimental conditions (e.g., incubation time and TrOC type). In this review, mechanisms and factors governing the interactions of interfering compounds with WRF and their ligninolytic enzymes are reviewed and elucidated. In addition, the performance of WRF and their ligninolytic enzymes for the removal of TrOCs from synthetic and real wastewater is critically summarized.

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“…Unfortunately, most of them have serious drawbacks, such as the low capacity in removing recalcitrant compounds, the formation of toxic by-products, operational problems due to equipment damage and malfunctioning, and their limited applicability to certain contaminants that are present at high level in the landfill leachate [2,16]. In order to overcome these drawbacks, the bioremediation was introduced as an efficient and cost effective solution for removal of a wide variety of contaminants, including the ones present in landfill leachate [17,18]. Generally, the bioremediation is defined as a process that uses microorganisms or their enzymes to degrade the environmental contaminants into less toxic forms [19].…”

Section: Introductionmentioning

confidence: 99%

Screening and selection of autochthonous fungi from leachate contaminated-soil for bioremediation of different types of leachate

Zegzouti

Boutafda

Fels

et al. 2019

Environmental Engineering Research

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This study aims to use contaminated soil with leachate to select autochthonous fungi that are able to bioremediate three types of leachate, (Young (YL), Intermediate (IL) and Old (OL)). Eleven fungal species were isolated via the enrichment method using the leachate as the sole source of carbon and energy. The isolates were evaluated for their ability to grow and remove organic pollutants at 100%, 50% and 25% (v/v) of leachate in both solid and liquid cultures that were spiked with malt extract. The results indicated that only three fungi, Aspergillus flavus (A. flavus-LC106118), Aspergillus niger (A. niger-KT192262) and Fusarium solani (F. solani-KX349467) showed significantly high capacity to grow on leachate, with maximum radial growth rates (Gr) of 7.5 mm, 4.7 mm , and 5.3 mm, respectively. In addition, 34%, 22%, and 27%, respectively of COD removal rates were obtained at 25% concentration in YL. A. flavus was the most tolerant fungus against landfill leachate, followed by F. solani, and finally A. niger. Therefore, these three fungi are good candidates for leachate bioremediation. However, for a better remediation, the combined effects of different types of fungi and leachates on the fungal growth need to be considered during the fungi selection.

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Fungal Bioremediation of Emerging Micropollutants in Municipal Wastewaters

Cited by 4 publications

References 133 publications

Degradation of Pharmaceuticals and Personal Care Products by White-Rot Fungi—a Critical Review

Degradation of Pharmaceuticals and Personal Care Products by White-Rot Fungi—a Critical Review

Impact of wastewater derived dissolved interfering compounds on growth, enzymatic activity and trace organic contaminant removal of white rot fungi – A critical review

Screening and selection of autochthonous fungi from leachate contaminated-soil for bioremediation of different types of leachate

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