Preparation and Characterization an Active Carbon Adsorbent from Waste Mandarin Peel and Determination of Adsorption Behavior on Removal of Synthetic Dye Solutions

Ünügül, Tuba; Nigiz, Filiz Uğur

doi:10.1007/s11270-020-04903-5

Cited by 63 publications

(21 citation statements)

References 67 publications

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“…These IR peaks are associated with the components of the mandarin peel, such as C, H, O, and N (Table 2). Nevertheless, a new IR peak related to the C-O stretching of alcohols was observed for the MN-biochar and MZ-biochar in the range of 1200-1100 cm −1 [40]. These results imply that chemical activation may significantly influence the composition of functional groups of biochars related to the MO and FG adsorption capacity [41].…”

Section: Physicochemical Characteristics Of Mandarin Peel Biocharsmentioning

confidence: 90%

“…This implies that the pH value of the solution is a critical factor that affects the physical parameters of the MO (pKa = 3.58) and FG (pKa = 3.11). Furthermore, it is directly influential on the surface charge and the adsorption ability of the mandarin peel biochars [40].…”

Section: Physicochemical Characteristics Of Mandarin Peel Biocharsmentioning

confidence: 99%

“…Mandarin peels contain organic carbon components such as cellulose, hemicellulose, and pectin, which render them suitable for the production of environmentally friendly biochars through pyrolysis, which results in a material with excellent adsorption capacity [20]. Unugul and Nigiz. (2020) have achieved a complete copper removal using an acid-treated carbonized mandarin peel adsorbent [24].…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Adsorptive Removal of Dyes Using Mandarin Peel Biochars via Chemical Activation with NH4Cl and ZnCl2

Park

Kim

Lee

et al. 2021

Water

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This study examined differences in the adsorption kinetics, isotherms, and thermodynamics of the dyes (methyl orange and fast green FCF) by pristine (M–biochar) and chemical activated mandarin peel biochars (MN–biochar and MZ–biochar). The specific surface area (1085.0 m2/g) and pore volume (0.194 cm3/g) of MZ-biochar much higher than those of the M–biochar (specific surface area = 8.5 m2/g, pore volume = 0.016 cm3/g) and MN–biochar (specific surface area = 181.1 m2/g, pore volume = 0.031 cm3/g). The equilibrium adsorption capacities (mg/g) of MO and FG using M–biochar (MO = 0.95, FG = 0.78) MN–biochar (MO = 2.52, FG = 2.13), and MZ–biochar (MO = 16.27, FG = 12.44) have well-matched the pseudo-second-order model (R2 ≥ 0.952) compared with the pseudo-first-order model (R2 ≥ 0.008). Furthermore, the better explanation of the adsorption behavior of dyes by the Freundlich isotherm model (R2 ≥ 0.978) than the Langmuir isotherm model (R2 ≥ 0.881) supports the assumption that the multilayer adsorption governed the adsorption of dyes using mandarin peel biochars. The adsorptions of dyes were significantly dependent on the solution pH and temperature since the electrostatic and spontaneous endothermic reactions governed their removal using the pristine and chemical activated mandarin peel biochars.

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Section: Physicochemical Characteristics Of Mandarin Peel Biocharsmentioning

confidence: 90%

Section: Physicochemical Characteristics Of Mandarin Peel Biocharsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhanced Adsorptive Removal of Dyes Using Mandarin Peel Biochars via Chemical Activation with NH4Cl and ZnCl2

Park

Kim

Lee

et al. 2021

Water

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“…One of the more commonly used starting materials in the synthesis of AC is coal [ 275 ], but given the depleted amounts of coal now available, this gives rise to an increase in the price of coal-based AC. Consequently, there is a recent focus on developing more environmentally acceptable synthesis and fabrication methods, using starting materials such as mandarin peel [ 276 ] and coconut shell [ 274 ]. Another avenue being exploited is the fabrication of multifunctional adsorbent materials that contain relatively small amounts of AC.…”

Section: Chitosan Supportsmentioning

confidence: 99%

Recent Developments in Chitosan-Based Adsorbents for the Removal of Pollutants from Aqueous Environments

et al. 2021

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The quality of water is continuously under threat as increasing concentrations of pollutants escape into the aquatic environment. However, these issues can be alleviated by adsorbing pollutants onto adsorbents. Chitosan and its composites are attracting considerable interest as environmentally acceptable adsorbents and have the potential to remove many of these contaminants. In this review the development of chitosan-based adsorbents is described and discussed. Following a short introduction to the extraction of chitin from seafood wastes, followed by its conversion to chitosan, the properties of chitosan are described. Then, the emerging chitosan/carbon-based materials, including magnetic chitosan and chitosan combined with graphene oxide, carbon nanotubes, biochar, and activated carbon and also chitosan-silica composites are introduced. The applications of these materials in the removal of various heavy metal ions, including Cr(VI), Pb(II), Cd(II), Cu(II), and different cationic and anionic dyes, phenol and other organic molecules, such as antibiotics, are reviewed, compared and discussed. Adsorption isotherms and adsorption kinetics are then highlighted and followed by details on the mechanisms of adsorption and the role of the chitosan and the carbon or silica supports. Based on the reviewed papers, it is clear, that while some challenges remain, chitosan-based materials are emerging as promising adsorbents.

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“…For determining the appropriate kinetic model, calculated qe and R 2 values should be taken into account (Unugul and Nigiz, 2020). According to the results in Table 3 and Figure 7, both pseudo-first order and pseudo-second order kinetic models show high and good R 2 values.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Characterization and Application of Mangosteen Peel Activated Carbon for Ammonia Gas Removal

Hanami

Lestari

2021

Environ. Nat. Resour. J.

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Mangosteen peel can be used as an activated carbon precursor because of its high lignin content and hardness. In this study, mangosteen peel activated carbon (MP-AC) was prepared by a physical activation method using CO2 at 850°C. The Brunauer-Emmett-Teller (BET) analysis was used to assess the optimal activation time to identify the largest surface area. The properties of MP-AC were characterized by the SEM-EDS and FTIR analyses. The results showed that MP-AC obtained from the 120-minute activation time had the largest BET specific surface area of 588.41 m2/g and was selected as an adsorbent in the dynamic adsorption of ammonia gas. The values of moisture content, ash content, and iodine number of MP-AC were 6.07%, 9.8%, and 1153.69 mg/g, respectively. Breakthrough curve indicated that with lower inlet concentration and higher adsorbent mass, longer breakthrough time is reached. Equilibrium data was best fitted to the Langmuir isotherm, while the pseudo-first order kinetic model favorably described the adsorption kinetics. The results revealed a potential to utilize MP-AC as an adsorbent for ammonia gas removal with average NH3 adsorption capacity of 0.41 mg/g.

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Preparation and Characterization an Active Carbon Adsorbent from Waste Mandarin Peel and Determination of Adsorption Behavior on Removal of Synthetic Dye Solutions

Cited by 63 publications

References 67 publications

Enhanced Adsorptive Removal of Dyes Using Mandarin Peel Biochars via Chemical Activation with NH4Cl and ZnCl2

Enhanced Adsorptive Removal of Dyes Using Mandarin Peel Biochars via Chemical Activation with NH4Cl and ZnCl2

Recent Developments in Chitosan-Based Adsorbents for the Removal of Pollutants from Aqueous Environments

Characterization and Application of Mangosteen Peel Activated Carbon for Ammonia Gas Removal

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