Recent trends in the application of modified starch in the adsorption of heavy metals from water: A review

Gupta, Arijit Dutta; Rawat, K.P.; Bhadauria, Vivek; Singh, Harinder

doi:10.1016/j.carbpol.2021.117763

Cited by 79 publications

(21 citation statements)

References 155 publications

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“…banana and orange peels, [65], as well as ash from incinerated sewage sludge [66], may be used as natural biosorbents. Modified starches may show high adsorption capacity towards some dyes and heavy metals due to the replacement of hydroxyl groups with other chemically active groups [67,68]. Moreover, the use of wheat bran [69] and mango peel [70] resulted in the sorption of zinc ions at the level of 16.40 mg/g and 28.21 mg/g, respectively.…”

Section: Agricultural Waste Biomassmentioning

confidence: 99%

Removal of Heavy Metals from Aqueous Solutions with the Use of Lignins and Biomass

Miros-Kudra

Sobczak

Kopania

2022

Fibres &Amp; Textiles in Eastern Europe

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The overproduction of pollutants resulting from the development of industry causes the deposition of large amounts of toxic and carcinogenic substances, including heavy metals, in the aquatic ecosystem and other ecosystems. This is a civilisation problem of the present times, posing a serious threat to the natural environment, including humans. For this reason, it has recently become extremely important to develop effective methods to minimise the concentration of heavy metal ions in the aquatic systems and thus reduce their negative impact on the environment. One such technique is adsorption, which is believed to be an effective method of removing contaminants such as heavy metal ions from aqueous solutions. Looking at the available literature of the last few years, it can be concluded that adsorbents of natural origin are becoming more and more important. These are agricultural waste, all kinds of biomass, and waste from various industries. The study attempts to present and evaluate the sorption capacity of materials of natural origin, including oat bran, chitosan, alginate, tree bark, coconut fibre, and lignin. The use of such biosorbents is more friendly for the environment compared to their synthetic counterparts and perfectly fits the concept of sustainable development and the circular economy.

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Section: Agricultural Waste Biomassmentioning

confidence: 99%

Removal of Heavy Metals from Aqueous Solutions with the Use of Lignins and Biomass

Miros-Kudra

Sobczak

Kopania

2022

Fibres &Amp; Textiles in Eastern Europe

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“…The tunable affinity of cross-linked starch improves analytical selectivity and makes it an effective solid-phase adsorbent. To remove contaminants from water, a variety of starches and starch derivatives cross-linked with diethylenetriamine [ 20 ], acyclic polyamine [ 21 ], amino [ 22 ], acrylonitrile, ethylenediamine, and other agents [ 23 , 24 ], have been prepared and used as adsorbents. Furthermore, our research group has produced a series of new generations of starch-based adsorbents with remarkable improvements in adsorption properties toward phthalate esters [ 25 ], polycyclic aromatic hydrocarbons [ 26 ], nitrophenols [ 27 ], and tetracycline [ 28 , 29 ], by incorporating desirable functional groups into the starch’s structural backbone.…”

Section: Introductionmentioning

confidence: 99%

Development of a Solid-Phase Extraction Method Based on Biocompatible Starch Polyurethane Polymers for GC-MS Analysis of Polybrominated Diphenyl Ethers in Ambient Water Samples

Zhang

Okoli

2022

Molecules

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A new solid-phase extraction (SPE) method for the extraction, enrichment, and analysis of eight polybrominated diphenyl ethers (PBDEs) in water was developed. The current approach involves using a cross-linked starch-based polymer as an extraction adsorbent and determining the PBDE analytes of interest using gas chromatography-mass spectrometry in negative chemical ionization mode (GC-NCI-MS). The starch-based polymer was synthesized by the reaction of soluble starch with 4,4′-methylene-bis-phenyldiisocyanate as a cross-linking agent in dry dimethylformamide. Various parameters impacting extraction efficiencies, such as adsorbent quantity, sample volumes, elution solvents and volumes, and methanol content, were carefully optimized. The 500 mg of starch-based polymer as an adsorbent used to extract 1000 mL of spiked water, presented high extraction recoveries of eight PBDEs. The linearity of the extraction process was investigated in the range of 1–200 ng L−1 for BDE-28, 47, 99, 100, and 5–200 ng L−1 for BDE-153, 154, 183, and 209, with coefficients of determination (r2) exceeding 0.990 for all PBDEs. The limits of detection (LODs) ranged from 0.06 to 1.42 ng L−1 (S/N = 3) and the relative standard deviation values (RSD) were between 3.6 and 9.5 percent (n = 5) under optimum conditions. The method was successfully used to analyze river and lake water samples, where it exhibited acceptable recovery values of 71.3 to 104.2%. Considering the excellent analytical performance and comparative cost advantage, we recommend the developed starch-based SPE method for routine extraction and analysis of PBDEs in water media.

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“…[6,7] The different hydroxyl groups (OH) present on these biomacromolecules can be chemically modified with different functional and chemical groups such as amino, acetyl, carboxyl, amide, hydroxypropyl. These chemical modifications provide different new properties for various advanced applications such as drug and gene delivery, [8] waste water treatment, tissue engineering, [9] crosslinking agents, [10] antioxidant, and antimicrobial materials for food industry. [11,12] The oxidation of these OH presents one promising strategy to obtain new reactive groups.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and antibacterial activities of novel starch derivatives against E. coli and S. aureus

et al. 2022

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Three novel starch derivatives with antibacterial properties are synthesized through a rather simple multistep synthesis route. In a first step, sodium periodate oxidation of the hydroxyl groups (C2–C3) of starch yields a di‐aldehyde structure, which is used to attach N,N‐dimethylbenzylamine by Schiff base formation. Then, the amino groups of aminated starch are quaternized with three different ammonium salts (4‐bromobutyl‐pyridinium bromide, 4‐bromobutyl‐benzalkonium bromide, and 4‐bromobutyl‐quinolinium bromide). The different resulting products are fully characterized by FTIR, 1H NMR, and SEC analysis. Their antibacterial properties are evaluated against Escherichia coli and Staphylococcus aureus in vitro to obtain minimum inhibitory and bactericidal concentrations. All the starch derivatives show strong antibacterial activities against Gram‐negative E. coli strain and Gram‐positive S. aureus. Finally, hemolysis assays show that two of the starch derivatives obtained have no significant hemolytic effect on isolated human red cells.

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Recent trends in the application of modified starch in the adsorption of heavy metals from water: A review

Cited by 79 publications

References 155 publications

Removal of Heavy Metals from Aqueous Solutions with the Use of Lignins and Biomass

Removal of Heavy Metals from Aqueous Solutions with the Use of Lignins and Biomass

Development of a Solid-Phase Extraction Method Based on Biocompatible Starch Polyurethane Polymers for GC-MS Analysis of Polybrominated Diphenyl Ethers in Ambient Water Samples

Synthesis, characterization, and antibacterial activities of novel starch derivatives against E. coli and S. aureus

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