A cost effective method for immobilization of Cu and Ni polluted river sediment with nZVI synthesized from leaf extract

Slijepčević, Nataša; Pilipović, Dragana Tomašević; Kerkez, Đurđa; Krčmar, Dejan; Bečelić‐Tomin, Milena; Beljin, Jelena; Dalmacija, Božo

doi:10.1016/j.chemosphere.2020.127816

Cited by 30 publications

(13 citation statements)

References 37 publications

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“…According to the observations at various pH levels, WMF’s significant influence on Sb(III) elimination was directly related to its effect on Fe 2+ accumulation. When Liang removed selenite with zero-valent iron and a modest magnetic field, he got identical results [ 16 ].…”

Section: Resultsmentioning

confidence: 99%

“…By contrast, the electrostatic adsorption capacity and release ability of Fe 2+ in nZVI/AC is weak in alkaline conditions, thus the removal ability of Sb(III) is relatively low. Liu found the removal capacity of Sb(III) by S-nZVI slightly reduces with the increase in solution pH [ 16 ].…”

Section: Resultsmentioning

confidence: 99%

“…It has recently been revealed that employing a weak magnetic field (WMF) to boost ZVI performance for sequestering various contaminants is an effective and low-cost environmentally friendly strategy that can accelerate ZVI corrosion. The ZVI/WMF approach has been shown to effectively remove Sb(III)/Sb(V), Se(IV)/Se(VI) [ 7 ], As(III)/As(V) [ 8 ], Cr(VI) [ 15 ], Cu(II), and Ni [ 16 ]. Xu et al [ 17 ] found that adding WMF to the process improved the ZVI-based elimination of Sb(III)-tartrate, but they did not discuss the oxidation–reduction behavior of Sb(III) or the impact of tartrate on the removal behavior of Sb(III).…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of Sb(III) from Aqueous Solution by nZVI/AC: A Magnetic Fixed-Bed Column Study

et al. 2021

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The effectiveness of nanoscale zero-valent iron(nZVI) immobilized on activated carbon (nZVI/AC) in removing antimonite (Sb(III)) from simulated contaminated water was investigated with and without a magnetic fix-bed column reactor. The experiments were all conducted in fixed-bed columns. A weak magnetic field (WMF) was proposed to increase the exclusion of paramagnetic Sb(III) ions by nZVI/AC. The Sb(III) adsorption to the nZVI and AC surfaces, as well as the transformation of Sb(III) to Sb(V) by them, were both increased by using a WMF in nZVI/AC. The increased sequestration of Sb(III) by nZVI/AC in the presence of WMF was followed by faster nZVI corrosion and dissolution. Experiments were conducted as a function of the pH of the feed solution (pH 5.0–9.0), liquid flow rate (5–15 mL·min−1), starting Sb(III) concentration (0.5–1.5 mg·L−1), bed height nZVI/AC (10–40 cm), and starting Sb(III) concentration (0.5–1.5 mg·L−1). By analyzing the breakthrough curves generated by different flow rates, different pH values, different inlet Sb(III) concentrations, and different bed heights, the adsorbed amounts, equilibrium nZVI uptakes, and total Sb(III) removal percentage were calculated in relation to effluent volumes. At pH 5.0, the longest nZVI breakthrough time and maximal Sb(III) adsorption were achieved. The findings revealed that the column performed effectively at the lowest flow rate. With increasing bed height, column bed capacity and exhaustion time increased as well. Increasing the Sb(III) initial concentration from 0.5 to 1.5 mg·L−1 resulted in the rise of adsorption bed capacity from 3.45 to 6.33 mg·g−1.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Adsorption of Sb(III) from Aqueous Solution by nZVI/AC: A Magnetic Fixed-Bed Column Study

et al. 2021

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“…Heavy metals are some of the most challenging pollutants due to their toxic and nonbiodegradable nature and their bioaccumulation in ecological systems. − The determination of heavy metals hence is of vital importance in monitoring environmental quality, which is currently under pressure from increased pollution caused by industrial, agricultural, and domestic activities. − As heavy metals enter and accumulate in the environment, they can be absorbed by plants and animals that live in the contaminated areas leading to bioaccumulation. Through the food chain, these eventually biomagnify inside the human body through the consumption of bioaccumulated plants and animals or contaminated water.…”

Section: Heavy Metals In the Environmentmentioning

confidence: 99%

Heavy Metals Detection with Paper-Based Electrochemical Sensors

et al. 2021

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This Feature summarizes recent works in paper-based potentiometry and voltammetry in heavy metal determination. Interactions of paper substrates with heavy metals, influence on the sensing response, and modification methods applied to paper substrates to improve the performance of recently developed electrochemical sensors are discussed. Since the rekindling of interest in paper-based analytical devices, methodologies and electrode designs for heavy metal determinations are highlighted. Promising aspects of the use of these sensors for samples containing solids and the increased versatility of the use of paper in analytics offers the possibility of increased acceptance of these low-cost platforms.

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“…Slijepcevic et al [50] studied the immobilization of two HMs Ni and Cu from the contaminated sediment, using nanoscale zero-valent iron (nZVI), synthesized using mulberry and oak leaf extracts. The biogenic NPs were able to transform available Ni and Cu into a stable fraction.…”

Section: Hm Removal By Bnpsmentioning

confidence: 99%

Nanobioremediation of heavy metals: Perspectives and challenges

2021

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Sustainable agriculture and humanity's civilization rest upon valuable natural resources such as earth and water, which have gone maximal exploitation and have been deteriorated by human activities. Heavy metals are natural components and one of the major pollutants of our environment, with a high atomic number and five times the density of water. The conventional physicochemical treatments for metal removal being cost-intensive, have naturally paved the way for bioremediation, which is an attractive and economical alternative. Over the last few years, bionanotechnology has emerged as a useful tool in the remediation of heavy metals. The elimination of heavy metals continues to be a burning issue in research, and nanomaterials provide a particular affinity as well as high surface area for heavy metal adsorption. A chemically engineered nanoparticle can be expensive and also requires the use of toxic agents which may be undesirable for the environment. To cut the cost and produce clean, ecofriendly nanoparticles, biogenic synthesis of nanoparticles can be accomplished with the help of different microorganisms as well as plants, which can be further exploited for heavy metal remediation.

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A cost effective method for immobilization of Cu and Ni polluted river sediment with nZVI synthesized from leaf extract

Cited by 30 publications

References 37 publications

Adsorption of Sb(III) from Aqueous Solution by nZVI/AC: A Magnetic Fixed-Bed Column Study

Adsorption of Sb(III) from Aqueous Solution by nZVI/AC: A Magnetic Fixed-Bed Column Study

Heavy Metals Detection with Paper-Based Electrochemical Sensors

Nanobioremediation of heavy metals: Perspectives and challenges

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