Tailoring Activated Carbon Properties for Pb(II) and Cr(VI) Removal from Water in Continuous Mode

Boustila, Houda; Boutillara, Yasmine; Velasco, Leticia F.; Djellali, Ali; Tazibet, S.

doi:10.1002/ceat.202100331

Cited by 6 publications

(5 citation statements)

References 48 publications

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“…6 are similar, signifying that the two samples have developed principally the same main functional groups. Nevertheless, higher band intensities are noted for ACP than for ACZn, namely, the large band between 3500 and 3000 cm −1 attributed to the O‐H vibration of hydroxyl groups, carboxylic groups, and adsorbed water [16, 21]. Moreover, the large band between 1300 and 900 cm −1 is a synonym for the presence of oxygen groups in addition to phosphorous compounds in the case of ACP [22].…”

Section: Resultsmentioning

confidence: 99%

“…Hence, the one obtained by ZnCl 2 activation is washed with a hydrochloric acid solution (0.4 m ) for 30 min followed by distilled water till neutral pH whereas in the case of H 3 PO 4 , only distilled water is used until reaching neutral pH. Each washed sample is left in air overnight before being introduced into the oven at 105 °C for 24 h for drying [16]. Lastly, for practical reasons, the obtained activated carbons are grinded and sieved to another particle size range between 0.3 and 0.6 mm.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Single and Binary Adsorption of Benzene, Phenol, and p‐Nitrophenol: Effect of Physical Interactions

Boutillara,

Tazibet,

Fernandez Velasco

et al. 2024

Chem Eng & Technol

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This work aims at emphasizing the impact of different physical interactions such as intermolecular ones between co‐adsorbed molecules on the adsorption mechanisms in the liquid phase. Thus, the adsorption of a low concentration (5 ppm) of benzene, phenol, and p‐nitrophenol from aqueous medium in single and binary mixture solutions is studied. Two activated carbons were prepared from two different activating agents and used in this regard. The adsorbed amounts are determined by high‐performance liquid chromatography. The results showed the great importance of the aforementioned interactions in the adsorption of phenol, particularly the interactions with the co‐adsorbed compounds. Indeed, phenol was remarkably better retained in binary mixture solutions than in a single one.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Single and Binary Adsorption of Benzene, Phenol, and p‐Nitrophenol: Effect of Physical Interactions

Boutillara,

Tazibet,

Fernandez Velasco

et al. 2024

Chem Eng & Technol

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“…The introduction of various functional groups onto ACs could provide additional adsorption sites for more efficient adsorption [ 14 , 15 ]. The existence of different adsorption sites at ACs which were suitable for positively charged metal ions or negatively charged Cr(VI) [ 16 ]. Normally, positively charged adsorbents usually possess relatively higher adsorption capacity toward Cr(VI).…”

Section: Cr Removal: the Developed Adsorbentsmentioning

confidence: 99%

Removal of Chromium Species by Adsorption: Fundamental Principles, Newly Developed Adsorbents and Future Perspectives

et al. 2023

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Emerging chromium (Cr) species have attracted increasing concern. A majority of Cr species, especially hexavalent chromium (Cr(VI)), could lead to lethal effects on human beings, animals, and aquatic lives even at low concentrations. One of the conventional water-treatment methodologies, adsorption, could remove these toxic Cr species efficiently. Additionally, adsorption possesses many advantages, such as being cost-saving, easy to implement, highly efficient and facile to design. Previous research has shown that the application of different adsorbents, such as carbon nanotubes (carbon nanotubes (CNTs) and graphene oxide (GO) and its derivatives), activated carbons (ACs), biochars (BCs), metal-based composites, polymers and others, is being used for Cr species removal from contaminated water and wastewater. The research progress and application of adsorption for Cr removal in recent years are reviewed, the mechanisms of adsorption are also discussed and the development trend of Cr treatment by adsorption is proposed.

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“…Then, the dried saturated material was placed in a vertical furnace with a temperature of 800 °C for 1 h. The prepared adsorbent was washed 4 times with distilled water until its pH reached about 6.5. Finally, the obtained neutral adsorbent was again placed in an oven with a temperature of 110 °C for 24 h and the dried sample was kept in a closed container for adsorption tests (Boustila et al, 2022).…”

Section: Chemical Activationmentioning

confidence: 99%

Investigation of the viable role of oil sludge-derived activated carbon for oily wastewater remediation

Amari

Noreen²,

Osman³

et al. 2023

Front. Environ. Sci.

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A wide range of studies has been carried out to describe the equilibrium data of adsorption for the surface adsorption process. However, no extensive investigation has been carried out to evaluate the oil sludge based activated carbon surface adsorption. Therefore, the possibility of carbon active production using different oil sludges and consequently the adsorption mechanism of these kind of adsorbents is still unknown. In this study, a novel low-cost approach was introduced to synthesize the activated carbon using oil sludge applying a two-step process including carbonization and chemical activation. In this way, four different types of oil sludges were characterized and then applied to synthesize different carbon actives and their performance were investigated as an adsorbent. The results showed that all synthesized activated carbons, with about 6% ash and pH = 7 and the specific surface area of 110 m2/gr, have the ability to treatment of oily wastewater; which can be referred to the high carbon content (>80%). The iodine number and the efficiency of prepared activated carbon were obtained as 406.8 mg/g and 94%, respectively. The adsorption process was also studied at different process conditions such as temperature (308–338 K), pH value (3–9) and adsorbent amount (50–200 mg/L) to find the optimum condition for wastewater treatment. The results show that the pH value has an optimum in the adsorption rate (the maximum adsorption was measured at pH = 5) and the adsorption capacity can be reduced by increasing the temperature or decreasing the adsorbent amount. Moreover, three different adsorption isotherm models were applied, i.e., Langmuir, Temkin, and Freundlich isotherms; which the Langmuir equation was more suitable than others investigated isotherm models with R2 ≈ 0.999.

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Tailoring Activated Carbon Properties for Pb(II) and Cr(VI) Removal from Water in Continuous Mode

Cited by 6 publications

References 48 publications

Single and Binary Adsorption of Benzene, Phenol, and p‐Nitrophenol: Effect of Physical Interactions

Single and Binary Adsorption of Benzene, Phenol, and p‐Nitrophenol: Effect of Physical Interactions

Removal of Chromium Species by Adsorption: Fundamental Principles, Newly Developed Adsorbents and Future Perspectives

Investigation of the viable role of oil sludge-derived activated carbon for oily wastewater remediation

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