Novel Polycarboxylated Starch-Based Sorbents for Cu<sup>2+</sup> Ions

Chauhan, Kalpana; Chauhan, Ghanshyam S.; Ahn, Jou–Hyeon

doi:10.1021/ie9009952

Cited by 47 publications

(18 citation statements)

References 52 publications

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“…The hydrogel that showed the maximum ion uptake was used to study the effect of contact time, temperature, pH, and Cu 2+ ions concentration on the sorption capacity. Figure 10 shows the suggested interaction between the Cu 2+ ions and the carboxylated starch [65]. .…”

Section: Maleate Starch Semi-ester Maleate Starch Di-estermentioning

confidence: 99%

Removal of Heavy Metals from Industrial Waste Water by Biomass-Based Materials: A Review

Ms¹,

Arm²

2016

J Pollut Eff Cont

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The recent researches are moving to removal of the agricultural and industrial pollutants from sewage treatment and discuss the possibility of the re-use of this water for agricultural purposes. The chemical contaminants represent the most dangerous types of contaminants found in the water for a many reasons, they are non-biodegradable environmentally and their high toxicity at very low concentrations in addition to the cumulative impact in the bodies of living organisms. The most toxic heavy metals are lead, mercury and chromium. It was estimated that the estimated that global impact of lead is 18-22 million people and of mercury 15 to 19 million people at 2010 according to Blacksmith Institute's World worst pollution problems. Contamination of the water resources with these elements, leads to polluting of the entire food chain and represents a real threat to the ecosystem. Thus, pure water shortage becomes a crucial problem worldwide. Among the most important research that can contribute to solving the problem of those related to water purification and improving the quality and re-use even in agriculture, for example, instead of wasted and discarded. There are many scientific methods applied in this regard. They include adsorption, precipitation, ion exchange, reverse osmosis, electrochemical treatments, membrane filtration, evaporation, flotation, and oxidation and biosorption processes. Some of these techniques however, have disadvantages such as incomplete metal removal, high reagent and energy requirements and generation of toxic sludge or other waste products. Among all these techniques, the adsorption is economically favorable and technically easy to separate. Instead of using commercial materials researchers have worked on inexpensive materials such as natural and agricultural products. Several works concerned the removal of heavy metals but the present work focuses on the sorbents based on biomass and their efficiency in removal of heavy metals from waste water.

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Section: Maleate Starch Semi-ester Maleate Starch Di-estermentioning

confidence: 99%

Removal of Heavy Metals from Industrial Waste Water by Biomass-Based Materials: A Review

Ms¹,

Arm²

2016

J Pollut Eff Cont

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“…The maximum absorption capacity of this sample was found to be 208 mg/g. Chauhan et al [40] synthesized polycarboxylated starch-based hydrogels which were applied for the sorption of copper ions. This hydrogel is stimuli responsive in nature for the sorption of Cu 2+ ions and strongly depends on the 3D network of hydrogels.…”

Section: Removal Of Heavy Metal Ions By Sahsmentioning

confidence: 99%

“…Starch-graft-acrylic acid/montmorillonite (S-g-AA/MMT) 130.1 [34] Chitosan-CMC 169.6 [35] Sodium poly (acrylic acid) p(AANa) 243.9 [36] Acrylic acid/clay 222.2 [38] Polycarboxylated starch p(CS) 128 [40] Acrylamide (AAm)-2-acrylamido-2-methylpropane sulfonic acid (AMPS) sodium salt/clay 81.66 [41]…”

Section: Referencementioning

confidence: 99%

Superabsorbent Hydrogels for Heavy Metal Removal

Rehman¹,

Shah²,

Khattak³

et al. 2021

Trace Metals in the Environment - New Approaches and Recent Advances

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The superabsorbent hydrogels (SAHs) are 3D polymer networks having hydrophilic nature, which can swell, absorb, and hold incredible amount of water in aqueous medium showing better sorption ability. The sorption ability enables SAH to absorb organic pollutants, dyes, and heavy metal ions (HMI) from wastewater. Therefore, SAHs have recently got considerable interest from the researchers to be used for wastewater treatment. In order to know the swelling property and to understand the wastewater treatment in general and heavy metal ion removal from industrial effluent in particular, this chapter describes the removal of heavy metal ions from wastewater in details. Thus this chapter will enable us to understand the theoretical and experimental part regarding the removal of heavy metal ions by SAH from wastewater. It also highlights the parameters of adsorption process such as effect of initial concentration of heavy metal ions, effect of external stimuli (pH), effect of temperature on the removal of heavy metal ions, and dosage studies. The synthesis of SAH and its use for removal of heavy metal ions from wastewater as well as recycling, selectivity, and effectiveness are also discussed in detail.

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“…Water pollution due to the effluent discharged from dye, textile, metal finishing, and associated industry is an area of serious concern [1][2][3][4]. Such contamination leads to high level of toxic metal ions, high COD and BOD, and coloration of the wastewater stream which creates havoc with marine life and associated food chain [5].…”

Section: Introductionmentioning

confidence: 99%

Sorption of acid and basic dyes on radiation-grafted Teflon scrap: equilibrium and kinetic sorption studies

et al. 2016

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Mutual radiation grafting technique using Co-60 gamma radiation has been used to graft glycidylmethacrylate (GMA) to Teflon scrap. Cationic and anionic adsorbents were prepared from GMA-grafted Teflon scrap (GMA-g-Teflon) by converting epoxy ring into sulphonic acid and triamine groups by doing suitable chemical reactions at elevated temperatures. The converted grafted product was studied for its dye uptake properties from manufactured aqueous dye solution. Uptake of basic dyes namely, Basic red 29 (BR-29) and anionic dye namely, Remazol brilliant blue-1 (RB-1) was investigated. Langmuir and Freundlich adsorption models were used to analyze equilibrium adsorption, while kinetics of adsorption was analyzed using pseudo-first-order, pseudo-second-order models. The equilibrium adsorption of BR-29 and RB-1 was better explained by Langmuir adsorption model. Separation factor (R L ) was found to be in the range 0 \ R L \ 1, indicating favorable adsorption of basic and acidic dyes. Higher coefficient of determination (or regression) (r 2 ) and better agreement between q e,cal (calculated) and q e,exp (experimental) values were obtained for pseudo-second-order kinetic model.

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Novel Polycarboxylated Starch-Based Sorbents for Cu²⁺ Ions

Cited by 47 publications

References 52 publications

Removal of Heavy Metals from Industrial Waste Water by Biomass-Based Materials: A Review

Removal of Heavy Metals from Industrial Waste Water by Biomass-Based Materials: A Review

Superabsorbent Hydrogels for Heavy Metal Removal

Sorption of acid and basic dyes on radiation-grafted Teflon scrap: equilibrium and kinetic sorption studies

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Novel Polycarboxylated Starch-Based Sorbents for Cu2+ Ions

Cited by 47 publications

References 52 publications

Removal of Heavy Metals from Industrial Waste Water by Biomass-Based Materials: A Review

Removal of Heavy Metals from Industrial Waste Water by Biomass-Based Materials: A Review

Superabsorbent Hydrogels for Heavy Metal Removal

Sorption of acid and basic dyes on radiation-grafted Teflon scrap: equilibrium and kinetic sorption studies

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Product

Resources

About

Novel Polycarboxylated Starch-Based Sorbents for Cu²⁺ Ions