Adsorption of heavy metals from industrial wastewater by using polyacrylic acid hydrogel

Sezgin, Naim; Balkaya, Nilgün

doi:10.1080/19443994.2015.1030453

Cited by 39 publications

(21 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the adsorption process of Cu 2+ , Pb 2+ and Fe 3+ onto CMC‐g‐AMPS hydrogel followed pseudo‐second‐order kinetic model and that the adsorption is probably controlled by the chemical adsorption process . This is in agreement with previous works, which study on other biosorbents …”

Section: Resultssupporting

confidence: 91%

“…Similar results were reported by Akpomie et al . and Sezgin and Balkaya . However, the q e decreased when hydrogel dosage was increased.…”

Section: Resultssupporting

confidence: 90%

“…The dosage of adsorbent used in the removal of heavy metal is important for design. The equilibrium of the system should be determined between the used adsorbent and adsorbate . Figure revealed that increase in the dosage of CMC‐g‐AMPS hydrogel from 0.1 to 0.5 g resulted in an increasing % R .…”

Section: Resultsmentioning

confidence: 99%

“…The experiments were carried out in an isothermal water bath shaker with rotation speed of 150 rpm for 6 h. At the end of the adsorption process, the suspensions were centrifuged at 5000 rpm for 5 min and then the supernatant liquid was analyzed for the residual concentration of metal ions by atomic absorption spectrometer (AAS) (Perkin Elmer, Analyst 800, Waltham, MA). The percentage of heavy metal removal ( R ) and equilibrium adsorption capacities ( q e ) of CMC‐g‐AMPS hydrogel were calculated using the following equations:

R (() %) = \frac{C_{0} - C_{e}}{C_{0}} \times 100

q_{e} = \frac{((), C_{0} - C_{e}) \times V}{m}

where C 0 represents the initial concentration of metals ions (mg L ‐1 ), C e represents metal concentrations in the solution after the experimental study (mg L ‐1 ), q e represents the equilibrium adsorption capacity (mg g ‐1 ), V represents sample volume (L), and m represents amount of hydrogel used (g).…”

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Optimization of synthesis condition for carboxymethyl cellulose‐based hydrogel from rice straw by microwave‐assisted method and its application in heavy metal ions removal

Panchan

Niamnuy

Dittanet

et al. 2017

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND An alternative carboxymethyl cellulose‐based biosorbent hydrogel was synthesized by grafting 2‐acrylamido‐2‐methylpropanesulfonic acid (AMPS) onto the prepared carboxymethyl cellulose backbone via microwave heating. Response surface methodology was employed to optimize the hydrogel synthesis condition for maximum gel content with respect to AMPS dose, N,N′‐methylene‐bis‐acrylamide dose, and microwave exposure time. The prepared gels were then characterized and evaluated in terms of their heavy metal ions adsorption performance and reusability. RESULTS The optimum synthesis condition yielded the maximum gel content and maximum equilibrium swelling of 96.33% and 2819 ± 15%, respectively. The Langmuir model fitted the experimental isotherm data well, with maximum adsorption capacity of 86.21, 102.04 and 33.56 mg g‐1 for Cu2+, Pb2+ and Fe3+, respectively. Microwave heating was clearly noted to result in hydrogel of higher porosity and could shorten the synthesis time by 88.33%; the gel content was 7.46% higher compared with that obtained via conventional heating. CONCLUSION Microwave‐assisted heating is a feasible alternative and an efficient technique for CMC‐g‐AMPS hydrogel synthesis. The optimized CMC‐g‐AMPS hydrogel exhibited good performance for Cu2+, Pb2+ and Fe3+ ions removal and was satisfactorily reused, thus contributing to the alleviation of environmental problems caused by discarded rice straw and water contaminated with heavy metal ions. © 2017 Society of Chemical Industry

show abstract

Section: Resultssupporting

confidence: 91%

“…Similar results were reported by Akpomie et al . and Sezgin and Balkaya . However, the q e decreased when hydrogel dosage was increased.…”

Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

R (() %) = \frac{C_{0} - C_{e}}{C_{0}} \times 100

q_{e} = \frac{((), C_{0} - C_{e}) \times V}{m}

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Optimization of synthesis condition for carboxymethyl cellulose‐based hydrogel from rice straw by microwave‐assisted method and its application in heavy metal ions removal

Panchan

Niamnuy

Dittanet

et al. 2017

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

show abstract

“…Sezgin and Balkaya [19] FTIR. The surface characteristics of the hydrogel were evaluated using a scanning electron microscopy/energy dispersive X-Ray (SEM/EDX) analysis.…”

Section: Poly(acrylic Acid) (Paac)mentioning

confidence: 99%

The Use of Acrylic-Based Polymers in Environmental Remediation Studies

Yayayürük¹

2017

Acrylic Polymers in Healthcare

View full text Add to dashboard Cite

Heavy metals are not biodegradable and tend to accumulate in living organisms. Many heavy metal ions are known to be toxic or carcinogenic. Thus, removal of these toxic heavy metals from water is of crucial importance to protect the human population and the environment. In recent years, polymeric adsorbents have received considerable interest for heavy metal removal mainly due to important technological and scientific developments such as easy synthesis at controlled dimensions with variable functional groups, perfect mechanical rigidity, tunable surface chemistry, large surface area, pore size distribution, high uptake values and feasible regeneration under mild conditions. This chapter has attempted to present to the readers the widespread investigations of acrylic-based polymeric adsorbents so that the reader can get an idea about the various types and forms of polymeric materials used for the removal of heavy metals from water.

show abstract

Structure of Superabsorbent Polyacrylate Hydrogels and Dynamics of Counterions by Nuclear Magnetic Resonance

Guo

Pfeifer

Wilhelm

et al. 2019

Macro Chemistry & Physics

View full text Add to dashboard Cite

Polyacrylate hydrogels PAAM (M = 7Li+, 23Na+, 39K+, 87Rb+, and 133Cs+) are synthesized by free‐radical copolymerization and are studied by Nuclear Magnetic Resonance (NMR) over wide time and length scales to get an insight into the polymer network structure and the dynamics of alkali ions and water. 1H double‐quantum NMR (1H DQ‐NMR) indicates that neutralization by different alkali ions influences the polymer structure in swollen PAAM hydrogels. Relaxation rates of alkali ions are found to be dominated by quadrupolar relaxation. 1H relaxation varies with the chain fraction obtained from 1H DQ‐NMR. Pulsed field gradient NMR reveals diffusion coefficients of alkali ions and water for different swelling degrees. Network structure and dynamics as well as the interactions between water, alkali ions, and polymer chains are discussed.

show abstract

Adsorption of heavy metals from industrial wastewater by using polyacrylic acid hydrogel

Cited by 39 publications

References 54 publications

Optimization of synthesis condition for carboxymethyl cellulose‐based hydrogel from rice straw by microwave‐assisted method and its application in heavy metal ions removal

Optimization of synthesis condition for carboxymethyl cellulose‐based hydrogel from rice straw by microwave‐assisted method and its application in heavy metal ions removal

The Use of Acrylic-Based Polymers in Environmental Remediation Studies

Structure of Superabsorbent Polyacrylate Hydrogels and Dynamics of Counterions by Nuclear Magnetic Resonance

Contact Info

Product

Resources

About