Adsorption on Activated Carbon from Olive Stones: Kinetics and Equilibrium of Phenol Removal from Aqueous Solution

Bohli, Thouraya; Fiol, Núria; Villaescusa, Isabel; Ouederni, Abdelmottaleb

doi:10.4172/2157-7048.1000165

Cited by 14 publications

(13 citation statements)

References 12 publications

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“…The high solubility in water for phenolate at pH value (> 7) leads to a weak adsorption process on the biochar surface. These results were in good agreement with the reported results in the literature (Bohli et al 2013;Gilani et al 2019;Xie et al 2020). The best pH value for adsorption was 7; therefore, this value was used for all the other experiments.…”

Section: Effect Of Phsupporting

confidence: 92%

Comparative study between activated carbon and biochar for phenol removal from aqueous solution

Elbidi

Hewas

Asar

et al. 2021

BioRes

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Removal of phenol from wastewater using local biochar (BC) was investigated, while using activated carbon (AC) as a reference material. The main parameters affecting the sorption process were initial concentration, contact time, pH, and temperature. Statistical analysis of the results showed that the maximum removal percent when using AC and BC were 95% and 55%, respectively. Experimental data showed that the removal of phenol has fast kinetics and reached equilibrium within 5 minutes. The Langmuir and Freundlich isotherm models were applied to fit the adsorption experimental data. Pseudo-first order and pseudo-second order kinetic models were employed.

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Section: Effect Of Phsupporting

confidence: 92%

Comparative study between activated carbon and biochar for phenol removal from aqueous solution

Elbidi

Hewas

Asar

et al. 2021

BioRes

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“…Adsorption is the most common method used to treat waste with affordably [10] and simply in its operation [11]. Also adsorbent can be used again (regeneration) [12]. Several factors affect adsorption such as the type of adsorbent used, contact time, pH, and weight.…”

Section: Introductionmentioning

confidence: 99%

Mg/Al-CH, Ni/Al-CH and Zn/Al-CH, as adsorbents for Congo Red removal in aqueous solution

Siregar

Normah

Juleanti

et al. 2021

CST

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In this study, chitosan was extracted from shrimp shells by demineralization and deproteination processes. The extracted chitosan was used to modify the layered double hydroxide and used as an adsorbent for the removal of congo red from aqueous solutions. Composites were successfully synthesized using M2+/Al (M2+ = Zn, Mg, Ni) and chitosan (CH) and the samples obtained were characterized using XRD and FTIR. The X-ray diffraction (XRD) pattern appeared at the layered double hydroxide peak of 2? = 11.63°; 23.00°; 35.16°; and 61.59° and chitosan at 2? = 7.93° and 19.35. The composite appearing in the layered double hydroxide and chitosan indicated that the composite material has been successfully synthesized. The XRD diffraction patterns of Zn/Al-CH, Ni/Al-CH, and Mg/Al-CH showed low crystallinity. The Fourier Transform Infrared (FTIR) spectra verifying absorption spectrum showed the presence of two bands at 3448 cm-1, 1382cm-1 characteristic to both chitosan and LDH. Adsorption of Congo Red (CR) followed the pseudo-second-order and Langmuir isotherm models. The adsorption capacities of Zn/Al-CH, Ni/Al-CH, and Mg/Al-CH were 181.818 mg/g, 227.273 mg/g, and 344.828 mg/g, respectively. The layered double hydroxide-chitosan composite adsorption was endothermically characterized by positive enthalpy and entropy values. On the other hand, the adsorption spontaneously was characterized by a negative Gibbs free energy value. The composites in this study were formed from LDH modified from chitosan extracted from shrimp shells to form Zn/Al-CH, Ni/Al-CH, and Mg/Al-CH. The results of the characterization showed a number of characteristics that resembled the constituent materials in the form of LDH and chitosan. After being applied as an adsorbent to absorb Congo red dye, it then showed the most effective results using Mg/Al-CH adsorbent with an adsorption capacity of 344.828 mg/g.

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“…BET analysis results were given in Table 2. When the results were compared with other studies, it was seen that the calculated values for OPAC were lower [11,12,22]. It was thought that this situation was caused by the carbonization method applied.…”

Section: Characterization Of the Opacmentioning

confidence: 82%

“…Activated carbon is generally used in adsorption processes for high porosity, sufficient pore size, large specific surface area, and high mechanical strength. These properties of activated carbon make it one of the reliable adsorbents since it provides a high-efficiency treatment of many organic and inorganic pollutants [11][12][13][14]. However, the high price of commercial activated carbons increases the cost of treatment.…”

Section: Introductionmentioning

confidence: 99%

Characterization and dye adsorption effectiveness of activated carbon synthesized from olive pomace

Deniz

Başgöz

Güler

et al. 2022

Environmental Research and Technology

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The olive pomace is produced as a result of olive oil production. Studies, about products obtained from agricultural wastes, have increased within the scope of zero waste studies. In the present study, activated carbon was synthesized using the olive pomace taken from the olive pomace processing plant operating with a three-phase process. The synthesized activated carbon characterization was performed using Scanning Electron Microscope (SEM), Fourier-Transform Infrared Spectroscopy (FT-IR), Brunauer – Emmett – Teller (BET), and X-Ray Crystallography (XRD) devices. Olive pomace activated carbon (OPAC) was used for the adsorption of dye from an aqueous solution. The adsorption efficiency of the OPAC was investigated. The pH value of dye solution (6-9), the amount of activated carbon (0.5 and 1.0 g/L), and initial dye concentration (600-1200 mg/L) were optimized. Also, adsorption kinetic and isotherm calculations were made. The optimum parameters were found as the original pH value (pH=8), OPAC amount of 1.0 g/L and the initial concentration of 1000 mg/L. The Langmuir isotherm model and the pseudo-second-order kinetic model were found as the most suitable models.

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Adsorption on Activated Carbon from Olive Stones: Kinetics and Equilibrium of Phenol Removal from Aqueous Solution

Cited by 14 publications

References 12 publications

Comparative study between activated carbon and biochar for phenol removal from aqueous solution

Comparative study between activated carbon and biochar for phenol removal from aqueous solution

Mg/Al-CH, Ni/Al-CH and Zn/Al-CH, as adsorbents for Congo Red removal in aqueous solution

Characterization and dye adsorption effectiveness of activated carbon synthesized from olive pomace

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