Effect of alkyl polyglucoside and nitrilotriacetic acid combined application on lead/pyrene bioavailability and dehydrogenase activity in co-contaminated soils

Chen, Tingru; Liu, Xiaoyan; Zhang, Xinying; Xiao, Chen; Tao, Kaiyun; Hu, Xiaoxin

doi:10.1016/j.chemosphere.2016.03.127

Cited by 36 publications

(6 citation statements)

References 30 publications

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“…In the remediation of both heavy metals and PAHs, bioavailability determines the remediation efficiency [25,26]. An increase in organic acid production by roots can effectively increase the bioavailability of heavy metals and PAHs [27,28].…”

Section: Introductionmentioning

confidence: 99%

Phytoremediation effect of Medicago sativa colonized by Piriformospora indica in the phenanthrene and cadmium co-contaminated soil

Zhu

Wang

et al. 2020

BMC Biotechnol

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Background: The coexistence of polycyclic aromatic hydrocarbons (PAHs) and heavy metals has deleterious effects on environmental quality. Few reports have studied the mechanisms of plant inoculation with Piriformospora indica to remediate PAH-metal co-contaminated soil by analyzing the chemical speciation of the contaminants. This study investigated the influence of the inoculation of Medicago sativa with P. indica to remediate soil co-contaminated with phenanthrene (a kind of PAH) and cadmium (a heavy metal) by analyzing plant growth, physiological parameters and chemical speciation in rhizosphere and nonrhizosphere soils. Results: The presence of P. indica significantly increased plant tolerance, chlorophyll a, chlorophyll b, maximum quantum efficiency of PSII photochemistry and electron transport rate values in phenanthrene-and/or cadmiumcontaminated soil. P. indica inoculation in M. sativa roots increased fluorescein diacetate activities in soils contaminated with phenanthrene, cadmium or both, especially in the nonrhizosphere. The presence of phenanthrene prevented the inoculated plant from accumulating cadmium to some extent, whereas the presence of cadmium did not prevent the degradation of phenanthrene in either the rhizosphere or the nonrhizosphere after P. indica colonization. Although the low bioavailability of cadmium in the rhizosphere restricted its transportation into the stem, P. indica colonization in plants effectively increased cadmium accumulation in roots in soil co-contaminated with cadmium and phenanthrene. Conclusions: In conclusion, this work provides a theoretical basis for the use of P. indica combined with M. sativa for the remediation of PAH-metal co-contaminated soil.

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Section: Introductionmentioning

confidence: 99%

Phytoremediation effect of Medicago sativa colonized by Piriformospora indica in the phenanthrene and cadmium co-contaminated soil

Zhu

Wang

et al. 2020

BMC Biotechnol

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“…This may be due the fact that the phenol concentration up to the given point can stimulate the DHA and cause enhanced bacterial growth and biodegradation rate. 35,36 When the inlet phenol concentration increased to the critical point of 800 mg L À1 , there was a signicant reduction in DHA, indicating that the bioreactor is operating at the tolerance threshold. The reduction in phenol and COD removal efficiencies at the higher loading rates implies that the microorganisms are acting at their maximum capacity in the metabolic activities.…”

Section: Bioreactor Start-up and The Effect Of Inlet Phenol Concentramentioning

confidence: 99%

Enhanced biodegradation of phenol in a novel cyclic activated sludge integrated with a rotating bed bioreactor in anoxic and peroxidase-mediated conditions

2018

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“…No matter the remediation of heavy metal or PAHs, bioavailability determined the remediation efficiency [25][26]. More organic acid production by root could efficiently increase the bioavailability of heavy metals and PAHs [27][28].…”

Section: Introductionmentioning

confidence: 99%

Phytoremediation effect of Medicago sativa colonized by Piriformospora indica in the phenanthrene and cadmium co-contaminated soil

Li¹,

Zhu

Wang

et al. 2020

Preprint

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Background: Coexistence of polycylic aromatic hydrocarbons (PAHs) and heavy metals deleteriously threatens the quality of environmental health . F ew reports uncover the mechanism of inoculation plants with Piriformospora indica for remediating PAH- m etal co-contaminated soil by analyzing the chemical speciations of contaminants . This study investigated the influence of inoculation Medicago sativa with P. indica to remediate phenanthrene (kind of PAHs ) , and cadmium (one of heavy metals ) co-contaminated soil by analyzing the plant growth, physiological parameters and chemical speciation in rhizosphere and non-rhizosphere . Results: T he presence of P. indica significantly increased plants tolerance, Chlorophyll a , Chlorophyll b , maximum quantum efficiency of PSII photochemistry and electron transport rate values in phenanthrene an d /or cadmium contaminated soil. P. indica inoculation in M edicago sativa root increased f luorescein diacetate activities in phenanthrene, cadmium and both of that co-contaminated soil, especially in non-rhizosphere . The presence of phenanthrene hindered the inoculated plant from accumulating cadmium to some extent ; Whereas the presence of cadmium did not hinder the degradation of phenanthrene in both rhizosphere and non-rhizosphere after P. indica colonization. Although the poor bioavailability of cadmium in rhizosphere restricted the transportation into stem, P. indica colonization in plant efficiently increased cadmium accumulation in root in cadmium and phenanthrene co-contaminated soil. Conclusions: In conclusion, t he work provides the theoretical basis that Piriformospora indica combined with Medicago sativa contributed to the remediation of PAH-Metal co-contaminated soil.

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Effect of alkyl polyglucoside and nitrilotriacetic acid combined application on lead/pyrene bioavailability and dehydrogenase activity in co-contaminated soils

Cited by 36 publications

References 30 publications

Phytoremediation effect of Medicago sativa colonized by Piriformospora indica in the phenanthrene and cadmium co-contaminated soil

Phytoremediation effect of Medicago sativa colonized by Piriformospora indica in the phenanthrene and cadmium co-contaminated soil

Enhanced biodegradation of phenol in a novel cyclic activated sludge integrated with a rotating bed bioreactor in anoxic and peroxidase-mediated conditions

Phytoremediation effect of Medicago sativa colonized by Piriformospora indica in the phenanthrene and cadmium co-contaminated soil

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