Microorganism remediation strategies towards heavy metals

Yin, Kun; Wang, Qiaoning; Lv, Min; Chen, Lingxin

doi:10.1016/j.cej.2018.10.226

Cited by 538 publications

(146 citation statements)

References 125 publications

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“…However, live biosorbents have their own set of advantages. They can transfer adsorbed heavy metals into cells and alter the state of heavy metal ions to reduce their toxicity [26]; moreover, live biosorbents can more efficiently eradicate heavy metals at a low concentration [27]. However, only a few studies have compared the ability of live and dead biosorbents for toxic heavy metal biosorption.…”

Section: Introductionmentioning

confidence: 99%

Pb2+ biosorption from aqueous solutions by live and dead biosorbents of the hydrocarbon-degrading strain Rhodococcus sp. HX-2

Cao

Yang

et al. 2020

PLoS ONE

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In this study, the Pb 2+ biosorption potential of live and dead biosorbents of the hydrocarbondegrading strain Rhodococcus sp. HX-2 was analyzed. Optimal biosorption conditions were determined via single factor optimization, which were as follows: temperature, 25˚C; pH, 5.0, and biosorbent dose, 0.75 g L −1. A response surface software (Design Expert 10.0) was used to analyze optimal biosorption conditions. The biosorption data for live and dead biosorbents were suitable for the Freundlich model at a Pb 2+ concentration of 200 mg L −1. At this same concentration, the maximum biosorption capacity was 88.74 mg g −1 (0.428 mmol g −1) for live biosorbents and 125.5 mg g −1 (0.606 mmol g −1) for dead biosorbents. Moreover, in comparison with the pseudo-first-order model, the pseudo-second-order model seemed better to depict the biosorption process. Dead biosorbents seemed to have lower binding strength than live biosorbents, showing a higher desorption capacity at pH 1.0. The order of influence of competitive metal ions on Pb 2+ adsorption was Cu 2+ > Cd 2+ > Ni +. Fourier-transform infrared spectroscopy analyses revealed that several functional groups were involved in the biosorption process of dead biosorbents. Scanning electron microscopy showed that Pb 2+ attached to the surface of dead biosorbents more readily than on the surface of live biosorbents, whereas transmission electron microscopy confirmed the transfer of biosorbed Pb 2+ into the cells in the case of both live and dead biosorbents. It can thus be concluded that dead biosorbents are better than live biosorbents for Pb 2+ biosorption, and they can accordingly be used for wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Pb2+ biosorption from aqueous solutions by live and dead biosorbents of the hydrocarbon-degrading strain Rhodococcus sp. HX-2

Cao

Yang

et al. 2020

PLoS ONE

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“…HMs have a particular significance in ecotoxicology due to their long persistence, bioaccumulation and biomagnification in the food chain (Yin et al, 2019). They are nondegradable and continuously increasing in water bodies (Salomons and Forstner, 2012) and consequently bioaccumulate along the food chain, causing toxic effects at points far from the source of pollution (Strom, 2008;Ebrahimpour and Mushrifah, 2010;Weber et al, 2013).…”

mentioning

confidence: 99%

Evaluation of Potential Health Risk, Heavy Metal Pollution Indices and Water Quality of Edku Lagoon- Egypt

Shetaia¹,

Khatita²,

Abdelhafez³

et al. 2020

Egypt. J. of Aquatic Biolo. and Fish.

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Contamination of aquatic environment by heavy metals (HMs) is a critical concern due to their potential toxicity and accumulation in aquatic habitats (Jordan et al., 2014; Tscheikner-Gratl et al., 2019). Under certain environmental conditions, HMs could accumulate to a toxic concentration level and then cause significant ecological impacts and problems for human health (Jaishankar et al., 2014; Wongsasuluk et al.,

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“…The presence of metal translocation restriction, common in Pb compared to other metals. Limitation of heavy metal translocation to the top of the plant is related to accumulation in the plasma membrane [25], blocking by a casparian band, precipitation in an intercellular space [18], precipitation as insoluble metal salts in cell walls [26]- [30], or accumulation in corticol vacuoles and rhizoderma cells [31]-32].…”

Section: Resultsmentioning

confidence: 99%

The Effect of Pb Sourced Application on the Growth and Yield of Vegetable Crops

Rahayu¹,

Wardiyati²,

Maghfoer³

et al. 2020

Proceedings of the 5th International Conference on Food, Agriculture and Natural Resources (FANRes 2019)

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Pb input into agricultural land in addition to the natural geological activities, can also be produced from anthropogenic activities such as the application of organic matter, fertilizers and the use of pesticides. Although Pb is not an essential element for plants, plants can absorb it from the soil and accumulate it in plant parts in various concentrations. This study aims to determine the effect of the use of production inputs in the form of fertilizers and pesticides containing Pb on the growth and yield of vegetable crops. The research method used is Split Plot Design, as the main plot namely the source application of Pb (A) consists of 4 levels (A1: pesticide (99 mg Pbkg-1); A2 = fertilizer (21 mg Pb/kg); A3 = Pb(NO3) 2 (50 mg kg-1) and A4= control (without Pb input) and as a subplot namely type of vegetable (B) consists of two levels chinese cabbage(B1) and bean (B2). In general, the results show that the application of Pb sources from the use of fertilizers and pesticides has no significant effect on plant height, number of leaves, fresh weight, and total dry weight of the chinese cabbage and bean. Application of different Pb sources affects on the total chlorophyll of the chinese cabbage and bean vegetable plants. Chinese cabbage plants that applied Pb source from pesticides produced higher total chlorophyll (17,21 mg g-1), on the contrary, on the bean plants total chlorophyll that applied to the Pb source from pesticides produced the lowest total chlorophyll (4,66 mg g-1). The shoots of Chinese cabbage which applied Pb from pesticides accumulate Pb equal to 0,445 mg per dry weight (concentration of 38,63 mg Pb kg-1) higher than the accumulation of Pb on the control Chinese cabbage shoot. The Pb concentration that exceeds the safe limit for food from vegetables equal to 0,5 mg kg-1 , needs to be a serious concern to be minimized.

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Microorganism remediation strategies towards heavy metals

Cited by 538 publications

References 125 publications

Pb2+ biosorption from aqueous solutions by live and dead biosorbents of the hydrocarbon-degrading strain Rhodococcus sp. HX-2

Pb2+ biosorption from aqueous solutions by live and dead biosorbents of the hydrocarbon-degrading strain Rhodococcus sp. HX-2

Evaluation of Potential Health Risk, Heavy Metal Pollution Indices and Water Quality of Edku Lagoon- Egypt

The Effect of Pb Sourced Application on the Growth and Yield of Vegetable Crops

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