Taguchi optimization design of diameter-controlled synthesis of multi walled carbon nanotubes for the adsorption of Pb(II) and Ni(II) from chemical industry wastewater

Egbosiuba, Titus Chinedu; Abdulkareem, A. S.; Tijani, Jimoh Oladejo; Ani, Jacinta Ijeoma; Krikstolaityte, Vida; Srinivasan, Madhavi; Veksha, Andrei; Lisak, Grzegorz

doi:10.1016/j.chemosphere.2020.128937

Cited by 99 publications

(36 citation statements)

References 58 publications

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“…Consequently, membrane diameter in the fabrication of PAN/TiO 2 /Fe 3 O 4 composite nanofiber can be decreased using the Taguchi method. To date, Taguchi method has been used in various studies to optimize the preparation of diverse membranes for a variety of applications, including carbon molecular sieve for carbon dioxide adsorption, [ 28 ] cellulose‐MgO bionanocomposite as an antibacterial agent, [ 29 ] poly(acrylic acid)‐ZnO coated PVDF membrane for oily wastewater treatment, [ 30 ] carbon nanotubes for the adsorption of Pb(II) and Ni(II) from chemical industry wastewater, [ 31 ] and a porous ceramic membrane for removing of petroleum compounds and flux. [ 32 ]…”

Section: Resultsmentioning

confidence: 99%

Preparation of electrospun hybrid polyacrylonitrile nanofibers containing TiO₂/Fe₃O₄ and their capsaicinoids adsorption applications

Salehipour,

Rezaei,

Haddad

et al. 2022

Vietnam Journal of Chemistry

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Capsaicinoids are a group of alkaloids responsible for the pungent and spicy flavor in chili peppers, with bioactive properties. Spray of pepper made from the active ingredient of capsicum oleoresin and other inert ingredients. In this study, polyacrylonitrile (PAN)/TiO2/Fe3O4 composite nanofiber was prepared by electrospinning method. To optimize the factors effecting diameter of membrane, Taguchi method was applied. Optimum conditions such as 9 wt% PAN, 10 wt% TiO2/Fe3O4, voltage 10 kV, and 20 cm needle tip‐to‐collector distance were selected. The specific surface area of nanofiber, 10.51 m2g‐1, was confirmed by nitrogen sorption isotherm analysis. Then, nanofiber was used as a new absorbent membrane for adsorption of capsaicinoids. After optimizing conditions using Central Composite Design (CCD), the high efficincy was obtained by 50 mg/mL nanofiber membrane, which exhibited about 96 % adsorption efficiency after 10 min contact time for 1 mg/mL of capsaicinoids. The obtained membrane could be reused for capsicinoids adsorption with high efficiency for multiply times. The results showed that the obtained nanofiber membrane has the great potential to be used in protective clothing and chemical masks to absorb the active ingredients in spray pepper.

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Section: Resultsmentioning

confidence: 99%

Preparation of electrospun hybrid polyacrylonitrile nanofibers containing TiO₂/Fe₃O₄ and their capsaicinoids adsorption applications

Salehipour,

Rezaei,

Haddad

et al. 2022

Vietnam Journal of Chemistry

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“…Supporting Information for this article can be found under DOI: 10.1002/ceat.202100427. This section includes additional references to primary literature relevant for this research [31][32][33][34][35][36][37][38][39][40][41].…”

Section: Supporting Informationmentioning

confidence: 99%

Taguchi Optimization Studies for Abatement of 2‐Chlorophenol Using Neem Seed Activated Carbon

Mahapatra

Kumar

2022

Chem Eng & Technol

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The abatement of 2-chlorophenol (2CP) was carried out by an adsorption process using an economical, yet efficient activated carbon prepared from neem seeds activated carbon (NAC) as the adsorbent. The aim was to optimize the process parameters for 2CP adsorption onto NAC using Taguchi's optimization. An L 9 orthogonal array was used for the optimization studies of the process parameters. The signal-to-noise ratio and F-test values were the basis for selecting the significant parameters. The NAC was characterized using Brunauer-Emmett-Teller (BET), spectroscopic, microscopic, and X-ray diffraction analysis. The BET surface area was found to be 246 m 2 g -1 . Following the optimal conditions, an uptake capacity of 41 mg g -1 was observed. Finally, the regeneration studies revealed that the adsorption ability of NAC remained intact for up to three regeneration cycles.

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“…The percentage removal (%) and adsorption capacity, Q (mg/g) by nano-adsorbents were calculated using Eq. 2 and 3 respectively (Egbosiuba et al, 2021b;Jiang et al, 2016):…”

Section: Batch Adsorption Studymentioning

confidence: 99%

“…These methods include reverse osmosis (Al-Obaidi et al, 2017), flocculation and coagulation (GilPavas et al, 2017), precipitation (Prazeres et al, 2020), extraction of solvents (Zhang et al, 2020), exchange of ions (Ma et al, 2019), ozonation (Zhan et al, 2019) and electrolysis (Li et al, 2017). However, similar to these methods, the process of adsorption is considered most suitable as a result of its significant merits which include efficiency, simplicity, low cost and profitability (Egbosiuba et al, 2021b;Mudzielwana et al, 2019;Salih and Ghosh, 2018). The adsorption technique is not only versatile but also effective in eliminating hazardous and harmful contaminants even at trace levels (Rao and Kashifuddin, 2012).…”

Section: Introductionmentioning

confidence: 99%

Comparative Adsorptive Removal of Selected Heavy Metals from Battery Wastewater by Purified and Polyethylene Glycol Modified Carbon Nanotubes

et al. 2021

Preprint

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Comparative adsorption study of some toxic metals (Ni, Fe, Cu, Cd, and Pb) from battery industrial effluent by purified and polyethylene glycol-modified carbon nanotubes (CNTs) is reported. The as-prepared CNTs via chemical vapour deposition method (A-CNTs), its acid purified form (P-CNTs), and polyethylene glycol functionalized form (PEG-CNTs) were characterized by HRTEM, BET, HRSEM, FTIR and XRD. The HRSEM and HRTEM micrograph revealed the formation of multi-walled tubular network structures of different inner and outer diameter. The BET study of PEG-CNTs and purified CNTs showed surface areas of 970.81 m2/g and 781.88 m2/g, respectively. The nanomaterials batch adsorption effect of various parameters such as contact time, nano-adsorbent dosage and temperature was conducted. The optimum equilibrium to achieve maximum removal of Cd (83.41 %), Ni (92.79 %), Fe (95.93%), Pb (97.16 %) Cu (99.9 9%) using PEG-CNTs was 90 min of contact time, 0.3 g of nano-adsorbent dosage and 60 oC temperature. While the maximum percentage removal efficiencies accomplished using P-CNTs under the same applied conditions were Cd (78.64 %), Ni (76.12 %), Fe (92.87 %), Pb (90.7 2%) Cu (99.09 %). PEG-CNTs was seen as more effective than P-CNTs. Adsorption data of Ni on P-CNTs followed Langmuir isotherm while the adsorption equilibrium model (Freundlich isotherm) of Ni, Fe, Cu and Pb on PEG-CNTs were fitted well. However, in both cases, the sorption kinetic study followed the pseudo-second-order model. The thermodynamics showed that the removal of toxic metals from battery wastewater was spontaneous and endothermic irrespective of the nano-adsorbents. The study found that surface modification of CNTs by polyethylene glycol adequately improved the nanotubes, thus leading to relatively adsorption capacities of heavy metals from industrial battery effluent.

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Taguchi optimization design of diameter-controlled synthesis of multi walled carbon nanotubes for the adsorption of Pb(II) and Ni(II) from chemical industry wastewater

Cited by 99 publications

References 58 publications

Preparation of electrospun hybrid polyacrylonitrile nanofibers containing TiO₂/Fe₃O₄ and their capsaicinoids adsorption applications

Preparation of electrospun hybrid polyacrylonitrile nanofibers containing TiO₂/Fe₃O₄ and their capsaicinoids adsorption applications

Taguchi Optimization Studies for Abatement of 2‐Chlorophenol Using Neem Seed Activated Carbon

Comparative Adsorptive Removal of Selected Heavy Metals from Battery Wastewater by Purified and Polyethylene Glycol Modified Carbon Nanotubes

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Taguchi optimization design of diameter-controlled synthesis of multi walled carbon nanotubes for the adsorption of Pb(II) and Ni(II) from chemical industry wastewater

Cited by 99 publications

References 58 publications

Preparation of electrospun hybrid polyacrylonitrile nanofibers containing TiO2/Fe3O4 and their capsaicinoids adsorption applications

Preparation of electrospun hybrid polyacrylonitrile nanofibers containing TiO2/Fe3O4 and their capsaicinoids adsorption applications

Taguchi Optimization Studies for Abatement of 2‐Chlorophenol Using Neem Seed Activated Carbon

Comparative Adsorptive Removal of Selected Heavy Metals from Battery Wastewater by Purified and Polyethylene Glycol Modified Carbon Nanotubes

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Preparation of electrospun hybrid polyacrylonitrile nanofibers containing TiO₂/Fe₃O₄ and their capsaicinoids adsorption applications

Preparation of electrospun hybrid polyacrylonitrile nanofibers containing TiO₂/Fe₃O₄ and their capsaicinoids adsorption applications