Superabsorbent polymer hydrogels with good thermal and mechanical properties for removal of selected heavy metal ions

Shah, Luqman Ali; Khan, Majid; Javed, Rida; Sayed, Murtaza; Khan, Muhammad Saleem; Khan, Abbas; Ullah, Mohib

doi:10.1016/j.jclepro.2018.08.035

Cited by 141 publications

(33 citation statements)

References 42 publications

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“…This is done by heat or using accelerating agents like N,N,N′,N′-tetramethylethylenediamine (TEMED), NaSO 3 , etc. Currently, our group synthesized SAH based on acrylic acid (AAc) and acrylamide (AAm) with different compositions having good thermal and mechanical properties by thermal free radical polymerization process [29]. Liu et al [30] prepared a novel chitosan-g-poly(acrylic acid)/sodium humate SAH via grafting polymerization process using N,N′-methylenebisacrylamide (MBA) as a crosslinking agent and ammonium persulfate (APS) as an initiator.…”

Section: Synthesis Of Sahsmentioning

confidence: 99%

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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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Section: Synthesis Of Sahsmentioning

confidence: 99%

“…Swelling and sorption process of SAHs toward heavy metal ions[29].Trace Elements in the Environment -New Approaches and Recent Advances 6 SAH network and that of wastewater. The heavy metal ion removal capacities of SAHs can be calculated by following Eq.…”

mentioning

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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“…21 Shah et al prepared a super absorbent hydrogel with acrylic acid (AA) and acrylamide (AM) via single step free radical polymerization, and its SR could reach up to 1841 g g À1 . 22 However, few literatures reported that the PAA-based hydrogel adsorbents with a swelling ratio (SR) exceeded 3000 g g À1 . This defect can be attributed to the lack of suitable cross-linking agents.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a super-absorbent nanocomposite hydrogel based on vinyl hybrid silica nanospheres and its properties

Chen

Shen

et al. 2020

RSC Adv.

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“…Iqbal et al report synthesis of activated carbon and nano copper hydroxiapatite and alginate beads for the removal of As from aqueous solutions with maximum adsorption capacity of 39 mg/g. Shah et al used polymeric hydrogel composed of acrylic acid and acrylamide in different compositions. The hydrogel showed high selectivity for removal of Co, Cu ions among testing heavy metals, including Cd, Ni, Cu, and Co.…”

Section: Introductionmentioning

confidence: 99%

Development and assessment of adsorptive hydrogel: Process engineering and economic considerations

Sorour

Tewfik

Abulnour

et al. 2020

Engineering Reports

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This article addresses the production of an adsorbing hydrogel to be used for removal of heavy metals. A review of literature on hydrogel adsorption of heavy metals is highlighted. The adopted process is briefly described and typical adsorption results as compared to reported work are presented. The technical specifications of an industrial scale plant of appropriate capacity of 3000 ton/year are detailed. The total capital investment and the production cost have been estimated to be about $M 10.6 and 6.5, respectively. Financial analysis determined the effect of variation of selling price within the reported international range on financial indicators. Furthermore, analysis of the effect of variation by 10% increase/decrease of capital investment and annual operating cost has been also estimated. Indicators include net present value (NPV $M), internal rate of return (IRR%), and average simple return of return (Average. SRR%), which have been estimated as 24%, 18%, and 19%, respectively. The project proves to be techno-economically viable under the estimated conditions for wider application. K E Y W O R D Scomposite adsorbents, economics, heavy metals, industrial plant INTRODUCTIONHeavy metals pollution of different water resources is of worldwide environmental concern. 1 These toxic metal ions, even at low concentration, have deteriorated water resources used for drinking water causing serious environmental and health problems. 2 Different methods have been adopted for the removal of heavy metal present in wastewaters. The most commonly used methods include but not limited to ion-exchange, chemical precipitation, electrocoagulation/floatation, and membrane separation. [3][4][5][6][7][8][9] Various adsorbents have been used for removal of heavy metals from wastewater due to their high removal capacity and economic benefits. 10,11 Adsorbent materials such as activated carbon, 12 zeolites, 9,13 clays, 14,15 ion exchange resins, 16 and hydrogel 17 have been developed and are used commercially for the removal of heavy metal ions. Organic-inorganic hybrid polymers have been recently applied. The functional variation of organic materials is combined with advantages of a thermally stable and strong inorganic substrate which results in relatively high metal ionThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Superabsorbent polymer hydrogels with good thermal and mechanical properties for removal of selected heavy metal ions

Cited by 141 publications

References 42 publications

Superabsorbent Hydrogels for Heavy Metal Removal

Superabsorbent Hydrogels for Heavy Metal Removal

Synthesis of a super-absorbent nanocomposite hydrogel based on vinyl hybrid silica nanospheres and its properties

Development and assessment of adsorptive hydrogel: Process engineering and economic considerations

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