High surface area nanostructured activated carbons derived from sustainable sorghum stalk

Khalil, Kamal M.S.; Allam, Omar A.S.; Khairy, Mohamed; Mohammed, Khaled M. H.; El‐Khatib, Rafat M.; Hamed, Mervat A.

doi:10.1016/j.molliq.2017.09.090

Cited by 28 publications

(5 citation statements)

References 43 publications

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“…Transmittance %, (a.u.) two broad peaks indicated that the materials were structured in graphite micro-crystallites (Shi et al 2016) composed of few graphene-like layer (Khalil et al 2017). The absence of any other peaks in the XRD patterns of the BAC materials indicated the absence of any other mineral contaminates in the BAC materials, which confirmed by presence of low ash ratios (as indicated by DTG results, above).…”

Section: Xrd Diffractometrymentioning

confidence: 77%

“…Elemental analysis, Simultaneous Thermogravimetric-Differentials thermal analysis (TGA -DTA), Fourier transforms Infrared spectroscopy (FTIR), and powderX-ray diffractometry (XRD) were carried out according to the standard methods reported elsewhere (Khalil et al 2017).…”

Section: Bulk Analysesmentioning

confidence: 99%

“…Therefore, AC adsorbents cannot be regenerated (Magne and Walker 1986). Thus, different thermo-chemical methods have been investigated for the conversion of biomass of agricultural residues, as renewable and non-expensive starting materials for AC adsorbents formation (Açıkyıldız et al 2014;Gundogdu et al 2012;Angin 2014;Khenniche and Benissad-Aissani 2010;Gonçalves et al 2014;Wassie and Srivastava 2016;Karri et al 2017b;Khalil et al 2017).…”

Section: Introductionmentioning

confidence: 99%

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Formation of improved activated carbons from sugarcane bagasse as environmental materials for adsorption of phenolic pollutants

Khalil

Khairy

Allam

et al. 2021

Int. J. Environ. Sci. Technol.

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Phenolic pollutants are very toxic and their removal from aquatic resources is very important. Adsorption by activated carbon, AC, is the best method for removal of phenols from solutions. However, the high cost of AC and difficulty of its regeneration after phenol adsorption puts high demand on low price AC materials. Therefore, sugarcane bagasse as a sustainable, bulky and fibrous biomass was selected for the purpose of low-price AC formation for phenols adsorption. Sugarcane bagasse derived activated carbon, BAC, was achieved via an environmental thermo-chemical activation process using ZnCl 2 followed by pyrolysis at different temperatures (400-600 °C). The formed BAC materials were characterized by elemental analysis, simultaneous TGA-DTA, ATR-FTIR, XRD, Raman spectroscopy, SEM, and nitrogen adsorption/desorption techniques. The BAC materials showed several enhanced characteristics including extra high specific surface area (up to 2046 m 2 /g), improved meso-/microporosity dual system and nanostructured graphitic-like structure composed of few graphene layers. Adsorption removal of phenol as an industrial waste pollutant was investigated from solutions of wide range of concentrations (50-1000 mg/L). The adsorption processes were characterized by (L2) class of adsorption isotherm, Langmuir isotherm model, physical-adsorption thermochemical parameters and pseudo-second-order kinetics. Adsorptions of two other substituted phenols (resorcinol and pyrogallol) were investigated. The adsorption capacity was increased with increasing of intramolecular bonding of the adsorbate in the order of phenol < resorcinol < pyrogallol. The present results emphasized the versatility of the formed BACs as environmentally sustainable adsorbent for phenolic pollutants.

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Section: Xrd Diffractometrymentioning

confidence: 77%

Section: Bulk Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Formation of improved activated carbons from sugarcane bagasse as environmental materials for adsorption of phenolic pollutants

Khalil

Khairy

Allam

et al. 2021

Int. J. Environ. Sci. Technol.

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show abstract

“…1000 cm −1 to 1460 cm −1 can be associated with C–O stretching vibrations in acids, alcohols, phenols, ethers, esters, and O–H bending vibrations, which suggests the presence of a large amount of hydrophilic groups [ 18 , 19 ]. The bands at 700 cm −1 to 900 cm −1 were assigned to the C–H out-of-plane bonding in benzene derivatives [ 20 ], which might have adsorbed some benzenoid compounds by using π-π interaction. Based on the above results, there were rich oxygen-containing groups on C/Fe 3 O 4 NCs surface, which made C/Fe 3 O 4 NCs disperse well in solution for practical application.…”

Section: Resultsmentioning

confidence: 99%

Carbon-Based Fe3O4 Nanocomposites Derived from Waste Pomelo Peels for Magnetic Solid-Phase Extraction of 11 Triazole Fungicides in Fruit Samples

et al. 2018

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Carbon-based Fe3O4 nanocomposites (C/Fe3O4 NCs) were synthesized by a simple one-step hydrothermal method using waste pomelo peels as the carbon precursors. The characterization results showed that they had good structures and physicochemical properties. The prepared C/Fe3O4 NCs could be applied as excellent and recyclable adsorbents for magnetic solid phase extraction (MSPE) of 11 triazole fungicides in fruit samples. In the MSPE procedure, several parameters including the amount of adsorbents, extraction time, the type and volume of desorption solvent, and desorption time were optimized in detail. Under the optimized conditions, the good linearity (R2 > 0.9916), the limits of detection (LOD), and quantification (LOQ) were obtained in the range of 1–100, 0.12–0.55, and 0.39–1.85 μg/kg for 11 pesticides, respectively. Lastly, the proposed MSPE method was successfully applied to analyze triazole fungicides in real apple, pear, orange, peach, and banana samples with recoveries in the range of 82.1% to 109.9% and relative standard deviations (RSDs) below 8.4%. Therefore, the C/Fe3O4 NCs based MSPE method has a great potential for isolating and pre-concentrating trace levels of triazole fungicides in fruits.

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“…These are abundantly available feedstock to produce carbonaceous adsorbents that don't compete with food crops for arable land. The investigated crop residue-based feedstocks are rice stalk and husk (Liu et al, 2016), wheat straw (Li et al, 2016;Han et al, 2018), rice straw (Sangon et al, 2018), weeds (Güzel et al, 2017), bamboo (Yang et al, 2014), corn stover and cobs (Fang, 2012), cassava (Beakou et al, 2017a;Beakou et al, 2017b), swiss grass (Mahmoud et al, 2016), sugarcane bagasse pith (Amin, 2008), jute fiber (Senthilkumar et al, 2006), and sorghum stalk (Khalil et al, 2017).…”

Section: Plant and Crop Residuesmentioning

confidence: 99%

Biomass-derived porous carbonaceous materials and their composites as adsorbents for cationic and anionic dyes: A review

2021

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High surface area nanostructured activated carbons derived from sustainable sorghum stalk

Cited by 28 publications

References 43 publications

Formation of improved activated carbons from sugarcane bagasse as environmental materials for adsorption of phenolic pollutants

Formation of improved activated carbons from sugarcane bagasse as environmental materials for adsorption of phenolic pollutants

Carbon-Based Fe3O4 Nanocomposites Derived from Waste Pomelo Peels for Magnetic Solid-Phase Extraction of 11 Triazole Fungicides in Fruit Samples

Biomass-derived porous carbonaceous materials and their composites as adsorbents for cationic and anionic dyes: A review

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