Fabrication of magnetic lignosulfonate using ultrasonic-assisted in situ synthesis for efficient removal of Cr(Ⅵ) and Rhodamine B from wastewater

Geng, Jing; Gu, Fei; Chang, Jianmin

doi:10.1016/j.jhazmat.2019.04.086

Cited by 100 publications

(31 citation statements)

References 33 publications

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“…This may be because the -NH oxidizes in AR and reaction produced -CO-N groups. The peak at 1103 cm −1 was attributed to the antisymmetric stretching vibration of S-O in SO 3− groups, and the SO 3− group was from SL [32]. This indicates that SL was successfully grafted onto aminated CMPS.…”

Section: Characterizationmentioning

confidence: 87%

“…That is a common reason for limiting powder SL application as adsorbing material. To solve the separation problem of powder SL after adsorption from solution, magnetic lignosulfonate was fabricated based on magnetic separation technique [32]. However, beyond that, changing the macroscopic character of SL from powder to granular to prepare granular activated carbon is a valuable research direction for solving the separation problem, as well as for improving the adsorption properties of SL.…”

Section: Introductionmentioning

confidence: 99%

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Activated Carbon Microsphere from Sodium Lignosulfonate for Cr(VI) Adsorption Evaluation in Wastewater Treatment

Yang

Xing

et al. 2020

Polymers

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In this study, activated carbon microsphere (SLACM) was prepared from powdered sodium lignosulfonate (SL) and polystyrene by the Mannich reaction and ZnCl2 activation, which can be used to remove Cr(VI) from the aqueous solution without adding any binder. The SLACM was characterized and the batch experiments were conducted under different initial pH values, initial concentrations, contact time durations and temperatures to investigate the adsorption performance of Cr(VI) onto SLACM. The results indicated that the SLACM surface area and average pore size were 769.37 m2/g and 2.46 nm (the mesoporous material), respectively. It was found that the reduced initial pH value, the increased temperature and initial Cr(VI) concentration were beneficial to Cr(VI) adsorption. The maximum adsorption capacity of Cr(VI) on SLACM was 227.7 mg/g at an initial pH value of 2 and the temperature of 40 °C. The adsorption of SLACM for Cr(VI) mainly occurred during the initial stages of the adsorption process. The adsorption kinetic and isotherm experimental data were thoroughly described by Elovich and Langmuir models, respectively. SL could be considered as a potential raw material for the production of activated carbon, which had a considerable potential for the Cr(VI) removal from wastewater.

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Section: Characterizationmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Activated Carbon Microsphere from Sodium Lignosulfonate for Cr(VI) Adsorption Evaluation in Wastewater Treatment

Yang

Xing

et al. 2020

Polymers

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“…lnfalse(qe−qtfalse)=lnqe−k1t tqt=1k2qe2+1qet qt=kidt1/2+C where q e (mg g −1 ) and q t (mg g −1 ) are the amounts of RhB adsorbed at equilibrium and random time t (min) respectively, and k 1 (min −1 ) and k 2 (g mg −1 min −1 ) are the constants of pseudo-first-order and the pseudo-second-order rates respectively. k id (mg g −1 min −1/2 ) is the intra-particle diffusion rate constant and C is the intercept for the first linear phase [39,55,56].…”

Section: Discussionmentioning

confidence: 99%

In Situ Synthesis of MIL-100(Fe) at the Surface of Fe3O4@AC as Highly Efficient Dye Adsorbing Nanocomposite

Hamedi

Trotta

Zarandi

et al. 2019

IJMS

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A new magnetic nanocomposite called MIL-100(Fe) @Fe3O4@AC was synthesized by the hydrothermal method as a stable adsorbent for the removal of Rhodamine B (RhB) dye from aqueous medium. In this work, in order to increase the carbon uptake capacity, magnetic carbon was first synthesized and then the Fe3O4 was used as the iron (III) supplier to synthesize MIL-100(Fe). The size of these nanocomposite is about 30–50 nm. Compared with activated charcoal (AC) and magnetic activated charcoal (Fe3O4@AC) nanoparticles, the surface area of MIL-100(Fe) @Fe3O4@AC were eminently increased while the magnetic property of this adsorbent was decreased. The surface area of AC, Fe3O4@AC, and MIL-100(Fe) @Fe3O4@AC was 121, 351, and 620 m2/g, respectively. The magnetic and thermal property, chemical structure, and morphology of the MIL-100(Fe) @Fe3O4@AC were considered by vibrating sample magnetometer (VSM), thermogravimetric analysis (TGA), zeta potential, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), Brunner-Emmet-Teller (BET), and transmission electron microscopy (TEM) analyses. The relatively high adsorption capacity was obtained at about 769.23 mg/g compared to other adsorbents to eliminate RhB dye from the aqueous solution within 40 min. Studies of adsorption kinetics and isotherms showed that RhB adsorption conformed the Langmuir isotherm model and the pseudo second-order kinetic model. Thermodynamic amounts depicted that the RhB adsorption was spontaneous and exothermic process. In addition, the obtained nanocomposite exhibited good reusability after several cycles. All experimental results showed that MIL-100(Fe) @Fe3O4@AC could be a prospective sorbent for the treatment of dye wastewater.

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“… Adsorbent Adsorptive capacity (qm) (mg/g) Ref. 1 Ligno sulfonate Fe 3 O 4 Cr(Ⅵ) 22.47 [ 39 ] 2 Furfural residue (FR) 37.93 [ 40 ] 3 Cal-ZIF-67/AC 46.2 [ 41 ] 4 Hyper crosslinked polymeric adsorbent 25–55 [ 42 ] 5 Starch grafted p-tert-butyl-calix[n]arene 9.81 [ 43 ] 6 Magnetic nanocomposite 29.48 [ 44 ] 7 Polyamide branches grafted onto carbon microspheres 19.9 [ 45 ] 8 Coconut coir 14.9 [ 46 ] 9 Sodium montmorillonite 38.27 [ 47 ] 10 RGO-Ni nanocomposite 65.31 Present work …”

Section: Resultsmentioning

confidence: 99%

Adsorptive removal of Rhodamine B dye from aqueous solution by using graphene–based nickel nanocomposite

Jinendra

Bilehal

Nagabhushana³

et al. 2021

Heliyon

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In this work, reduced graphene oxide-nickel (RGO–Ni) nanocomposite is synthesized. X-ray diffraction (XRD), scanning electron microscopy (SEM) and SEM–EDS (Energy Dispersive X-Ray Spectroscopy) are used to study the crystalline nature, morphology and elemental composition of the RGO–Ni nanocomposite, respectively. As synthesized RGO–Ni nanocomposite is used to develop selective adsorptive removal of Rhodamine B (RhB) dye from the aqueous solution. The experiments have been performed to investigate RhB uptake via RGO–Ni nanocomposites which include, contact time (60 min), initial dye concentration (50 mg/100 ml), adsorbent dosage (0.5 mg) and pH 8 of dye solution. The equilibrium concentration is determined by using different models namely, Freundlich, Langmuir and Tempkin. Langmuir isotherm has been fitted well. Langmuir and Tempkin equations are determined to have good agreement with the correlation coefficient data. The kinetic study concluded that RhB dye adsorption follows with the pseudo-second-order kinetic model. Further, adsorption mechanism of RGO–Ni is proposed which involves three steps. The synthesized adsorbent is compared with the other adsorbents in the literature and indicates that RGO–Ni nanocomposite used in this study shown better results for a particular adsorption capacity than polymeric, natural and synthetic bioadsorbents. The regeneration and reusability experiments suggest RGO–Ni nanocomposite can be used for many numbers of times for purification/adsorption.

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Fabrication of magnetic lignosulfonate using ultrasonic-assisted in situ synthesis for efficient removal of Cr(Ⅵ) and Rhodamine B from wastewater

Cited by 100 publications

References 33 publications

Activated Carbon Microsphere from Sodium Lignosulfonate for Cr(VI) Adsorption Evaluation in Wastewater Treatment

Activated Carbon Microsphere from Sodium Lignosulfonate for Cr(VI) Adsorption Evaluation in Wastewater Treatment

In Situ Synthesis of MIL-100(Fe) at the Surface of Fe3O4@AC as Highly Efficient Dye Adsorbing Nanocomposite

Adsorptive removal of Rhodamine B dye from aqueous solution by using graphene–based nickel nanocomposite

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