Adsorption of Cu2+ and mechanism by natural biofilm

Cheng, Xiaoying; Xu, Wenjia; Wang, Ningyuan; Mu, Yanan; Zhu, Jiatian; Luo, Jiaqi

doi:10.2166/wst.2018.308

Cited by 12 publications

(5 citation statements)

References 26 publications

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“…92 For instance, Cu +2 adsorption in biofilms was shown to result in the binding of Cu +2 with the hydroxyl groups and amide groups present in the extracellular polymeric substances found in the biofilms. 93 This suggests that metal ions can be used as a nutrient by the organisms in the biofilms to maintain a sustainable, nutrient-rich environment within the biofilms through both ion adsorption and desorption. However, the adsorption and complexation reactions involving toxic metals such as Pb are known to be governed by the tolerance potential of microorganisms.…”

Section: Resultsmentioning

confidence: 99%

“…Ion exchange has been discussed in the literature as the major mechanism of metal ion adsorption in biofilms . For instance, Cu +2 adsorption in biofilms was shown to result in the binding of Cu +2 with the hydroxyl groups and amide groups present in the extracellular polymeric substances found in the biofilms . This suggests that metal ions can be used as a nutrient by the organisms in the biofilms to maintain a sustainable, nutrient-rich environment within the biofilms through both ion adsorption and desorption.…”

Section: Resultsmentioning

confidence: 99%

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Biofilms Enhance the Adsorption of Toxic Contaminants on Plastic Microfibers under Environmentally Relevant Conditions

Bhagwat

Tran

Lamb

et al. 2021

Environ. Sci. Technol.

136

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Microplastics (MPs) exposed to the natural environment provide an ideal surface for biofilm formation, which potentially acts as a reactive phase facilitating the sorption of hazardous contaminants. Until now, changes in the contaminant sorption capacity of MPs due to biofilm formation have not been quantified. This is the first study that compared the capacity of naturally aged, biofilm-covered microplastic fibers (BMFs) to adsorb perfluorooctane sulfonate (PFOS) and lead (Pb) at environmentally relevant concentrations. Changes in the surface properties and morphology of aged microplastic fibers (MF) were studied by surface area analysis, infrared spectroscopy, and scanning electron microscopy. Results revealed that aged MFs exhibited higher surface areas because of biomass accumulation compared to virgin samples and followed the order polypropylene>polyethylene>nylon>polyester. The concentrations of adsorbed Pb and PFOS were 4–25% and 20–85% higher in aged MFs and varied among the polymer types. The increased contaminant adsorption was linked with the altered surface area and the hydrophobic/hydrophilic characteristics of the samples. Overall, the present study demonstrates that biofilms play a decisive role in contaminant-plastic interactions and significantly enhance the vector potential of MFs for toxic environmental contaminants. We anticipate that knowledge generated from this study will help refine the planetary risk assessment of MPs.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Biofilms Enhance the Adsorption of Toxic Contaminants on Plastic Microfibers under Environmentally Relevant Conditions

Bhagwat

Tran

Lamb

et al. 2021

Environ. Sci. Technol.

136

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show abstract

“…Duong et al, 2010; Morin et al, 2008), Zn (e.g. Arini et al, 2011), and Cu (Cheng et al, 2018) are accumulated by periphytic biofilms and by sulfate-reducing bacterial biofilms (Cu; White and Gadd, 2000). All of these biofilms are present in Lake Uru Uru (Guédron et al, 2017) and may affect the shallow vertical distribution of elements in this aqueous system.…”

Section: Discussionmentioning

confidence: 99%

Natural and anthropogenic controls on particulate metal(loid) deposition in Bolivian highland sediments, Lake Uru Uru (Bolivia)

2019

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Mining in the Bolivian Altiplano is important and has historically provided much of the world’s Ag, Sn, and Sb. This study aims to better understand the effects of important recent increases in Bolivian mining on the deposition of metals and metalloids in sediment near Oruro, Bolivia’s fifth largest city, with special attention to natural and anthropogenic factors as well as early diagenesis, which could have broader implications in other high-elevation environments that have or will be affected by increased mining activities. To better assess the depositional trends of elements in sediments, five sedimentary cores collected in Lake Uru Uru and the Cala Cala Lagoon (nearby Oruro) were studied and analysis of the physicochemical variables coupled with radiometric dating indicate that (a) sediment deposited in Lake Uru Uru was likely sourced from local outcrops of Tertiary volcanics, Paleozoic shales, and ore and waste piles from mining activities material; (b) sedimentation rates in Lake Uru Uru were close to 3 mm·year−1, 1 mm higher than the ancient Tauca paleolake (~11,000–30,000 years ago); (c) early diagenetic effects have affected the distribution of Mn, As, and Cd in the sedimentary archive; and (d) the deposition of Ag, Sb, and Pb in the studied sediment has largely been related to historical trends in Bolivian Sn mining methods and production.

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“…This results indicated that biofilms might accumulate the Cr(VI) from the surrounding waters [16]. Biofilms in the aquatic ecosystems have been reported to have the ability to attract and reserve ions including heavy metal ions such as Cr(VI) (Kurniawan, 2015;Cheng, et al, 2018, Julien, et al, 2014.…”

Section: Cr(vi) Concentration In the Biofilm And The Surrounding Watermentioning

confidence: 99%

Biofilm Matrices as Biomonitoring Agent and Biosorbent for Cr(vi) Pollution in Aquatic Ecosystems

Kurniawan

2019

JEEST

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Heavy metal pollution in aquatic ecosystems has become one of the primary environmental problems. Cr(VI) is one of the most toxic and carcinogenic heavy metal pollutants. The degradation of aquatic ecosystems due to the Cr(VI) pollution usually occurs slowly, but the impact is accumulative. Hence, an awareness of the pollution often occurs when the impacts have already in the acute or chronic level. Therefore, the technologies to monitor and to solve the Cr(VI) pollution are critically important. The application of biological resources emerges as an alternative technology to solve the problems. This study analyzes the utilization of biofilm as a biomonitoring agent and a biosorbent to monitor and to immobilize Cr(VI) in the aquatic ecosystems, respectively. The development of the biofilm as a biomonitoring agent is conducted through the investigation of Cr(VI) concentration in the biofilm and the surrounding river water, while the utilization of the biofilm as a biosorbent is developed through the analysis of Cr(VI) adsorption characteristics to the biofilm. The results of this study reveal that the concentrations of Cr(VI) inside the biofilms are hundreds of times higher than the surrounding river water. The biofilms seem to accumulate the Cr(VI) from the surrounding river water through a physicochemical process. According to the result of this study, biofilms can become a promising biological agent to monitor and to immobilize Cr(VI) in the aquatic ecosystems.Keywords: Biofilm, Biomonitoring, Biosorption, Cr(VI), Water Pollution

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Adsorption of Cu2+ and mechanism by natural biofilm

Cited by 12 publications

References 26 publications

Biofilms Enhance the Adsorption of Toxic Contaminants on Plastic Microfibers under Environmentally Relevant Conditions

Biofilms Enhance the Adsorption of Toxic Contaminants on Plastic Microfibers under Environmentally Relevant Conditions

Natural and anthropogenic controls on particulate metal(loid) deposition in Bolivian highland sediments, Lake Uru Uru (Bolivia)

Biofilm Matrices as Biomonitoring Agent and Biosorbent for Cr(vi) Pollution in Aquatic Ecosystems

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