Removal of azo dye by a highly graphitized and heteroatom doped carbon derived from fish waste: Adsorption equilibrium and kinetics

Liu, Zhengang; Zhang, Fang; Liu, Tingting; Peng, Nana; Gai, Chao

doi:10.1016/j.jenvman.2016.08.008

Cited by 50 publications

(12 citation statements)

References 30 publications

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“…It was heated at a rate of 10 °C/min from room temperature to 700 °C under purified nitrogen (99.999%) flow of 100 mL/min. The carbonization step was held for 2 h at 700 °C [29]. Subsequently, the sample was transferred to a beaker containing 2 mol/L HCl, stirred for 1 h, then washed with deionized water and dried at 80 °C.…”

Section: Methodsmentioning

confidence: 99%

Effective Adsorption of Diesel Oil by Crab-Shell-Derived Biochar Nanomaterials

et al. 2019

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This study, for the first time, rendered crab shell activated biochar modified by potassium hydroxide (KOH) impregnation (CSAB), revealing a new potential application in the removal of diesel oil from oily wastewater. The structural characteristics of crab shell biochar (CSB) and CSAB were investigated by SEM, and the crystal structure and optical properties of as-prepared samples were analyzed using XRD and FTIR. Results showed that CSAB had stratified surface structure morphology, abundant functional groups, and that its high specific surface area could reach up to 2441 m2/g, which was about eight times larger than that of untreated CSB (307 m2/g). An adsorption isotherm study indicated that the actual adsorption process both of CSAB and CSB were found to fit better with the Freundlich equation. Moreover, chemical interaction controlled the adsorption kinetics efficiency while the adsorption equilibrium capacity was 93.9 mg/g. Due to its highly developed pore structure, unique surface characteristics, and effective adsorption performance, this low-cost activated carbon had the potential to serve as an efficient adsorbent for water pollution purification.

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Section: Methodsmentioning

confidence: 99%

Effective Adsorption of Diesel Oil by Crab-Shell-Derived Biochar Nanomaterials

et al. 2019

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“…Aliouche et al found that color removal caused by azo dyes followed an increasing order: UV < acetone/UV < S 2 O 8 2− /heat < S 2 O 8 2− /H 2 O 2 /UV < S 2 O 8 2− /UV < H 2 O 2 /UV [ 9 ]. Various nanomaterials used as the absorbents contain cobalt-zinc ferrite nanoadsorbents [ 19 ], silica nano-composite [ 16 , 20 , 21 , 22 ], nano zero-valent iron [ 23 ], Fe 3 O 4 nano-composite [ 24 , 25 , 26 , 27 ], carbon nanomaterials [ 28 , 29 , 30 , 31 , 32 , 33 ] and clay [ 34 , 35 ].…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Bentonite with Polymer Brushes and Its Application as an Efficient Adsorbent for the Removal of Hazardous Dye Orange I

Guo

Umar

et al. 2020

Nanomaterials

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Poly(2-(dimethylamino)ethyl methacrylate)-grafted bentonite, marked as Bent-PDMAEMA, was designed and prepared by a surface-initiated atom transfer radical polymerization method for the first time in this study. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermal gravimetric analysis (TGA) were applied to characterize the structure of Bent-PDMAEMA, which resulted in the successful synthesis of Bent-PDMAEMA. As a cationic adsorbent, the designed Bent-PDMAEMA was used to remove dye Orange I from wastewater. The adsorption property of Bent-PDMAEMA for Orange I dye was investigated under different experimental conditions, such as solution pH, initial dye concentration, contact time and temperature. Under the optimum conditions, the adsorption amount of Bent-PDMAEMA for Orange I dye could reach 700 mg·g−1, indicating the potential application of Bent-PDMAEMA for anionic dyes in the treatment of wastewater. Moreover, the experimental data fitted well with the Langmuir model. The adsorption process obeyed pseudo-second-order kinetic process mechanism.

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“…and pose serious problems, even in minute concentrations (Ferhat et al, 2016). More than 8000 chemical products are associated with the dyeing process with 2% of the annually produced dyes (Almost 10 9 kg, 70% of which are azo dyes) discharged directly in aqueous effluents (Fanun, 2014;Liu et al, 2016;Salvi and Chattopadhyay, 2016). Amongst these azo dyes, Orange II (OII) is one of the most widely used reactive dyes in the textile dyeing industries (Heibati et al, 2015).…”

mentioning

confidence: 99%

Single, simultaneous and consecutive biosorption of Cr(VI) and Orange II onto chemically modified masau stones

Albadarin

Solomon

Kurniawan

et al. 2017

Journal of Environmental Management

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Novel and low cost chemically modified masau stone (CMMS) was investigated for its biosorption of an anionic azo dye, Orange II (OII), and toxic hexavalent chromium (Cr(VI)) from aqueous systems: individually, simultaneously and consecutively. XPS and FTIR analyses indicated the introduction of quaternary-Nitrogen to the CMMS surface after activation with epichlorohydrin (etherifying agent) and diethylenetriamine (crosslinking agent). The effects of pH, contact time and initial concentration (C), and loading order on mechanisms of biosorption/reduction of OII and Cr(VI) onto CMMS were examined in detail. Several analytical techniques were employed to characterise the physio-chemical properties of the CMMS and determine the biosorption mechanisms. The pseudo second order and redox models were able to adequately predict the kinetics of biosorption. The Langmuir maximum OII biosorption capacity (q) was calculated as 136.8 mg/g for the dye onto the Cr(VI)-loaded CMMS consecutive system at C = 100 mg/dm. The q for the Cr(VI) system was found to be 87.32 mg/g at the same C max. This reveals that the biosorption of OII and Cr(VI) mainly takes place via two different mechanisms i.e. hydrogen bonding and electrostatic attraction for the dye, and biosorption-coupled reduction for Cr(VI).

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Removal of azo dye by a highly graphitized and heteroatom doped carbon derived from fish waste: Adsorption equilibrium and kinetics

Cited by 50 publications

References 30 publications

Effective Adsorption of Diesel Oil by Crab-Shell-Derived Biochar Nanomaterials

Effective Adsorption of Diesel Oil by Crab-Shell-Derived Biochar Nanomaterials

Surface Modification of Bentonite with Polymer Brushes and Its Application as an Efficient Adsorbent for the Removal of Hazardous Dye Orange I

Single, simultaneous and consecutive biosorption of Cr(VI) and Orange II onto chemically modified masau stones

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