High-efficiency removal of hexavalent chromium from contaminated water using nitrogen-doped activated carbon: kinetics and isotherm study

Abushawish, Alaa; Almanassra, Ismail W.; Backer, Sumina Namboorimadathil; Jaber, Lubna; Khalil, Abdelrahman K. A.; Abdelkareem, Mohammad Ali; Sayed, Enas Taha; Alawadhi, Hussain; Shanableh, Abdallah; Atieh, Muataz Ali

doi:10.1016/j.matchemphys.2022.126758

Cited by 25 publications

(8 citation statements)

References 62 publications

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“…The peak at 2922 cm −1 was ascribed to the C-H stretching vibration and the peak at 2359 cm −1 was ascribed to the stretching vibration of the atmospheric CO2 [36]. Moreover, peaks observed after 1200 cm −1 were attributed to the C=C vibrations and C-O stretching [14]. For the Co-Al LDO/AC composite, the sharpness of the 3446 cm −1 band was dramatically decreased when the Co and Al were incorporated, and the composite was calcined at 500 ℃.…”

Section: Surface Functional Groupsmentioning

confidence: 97%

Co-Al layered double oxide activated carbon composite for eliminating lead ions from water

Abushawish,

Chatla,

Almanassra

et al. 2024

J. Phys.: Conf. Ser.

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In the current study, preparation of cobalt-aluminum layered double oxide doped activated carbon (Co-Al LDO/AC) was achieved by the co-precipitation technique and utilized for the remediation of lead (Pb2+) from water. Various methods were employed to examine the properties of the composite material, including BET, XRD, FTIR, SEM, and EDS analysis. The material characterization outcomes indicated that the LDO structure was successfully incorporated into the AC matrices with a surface area of 189.4 m2/g. The influence of adsorption parameters including Co-Al LDO/AC dosage, period of contact, initial Pb2+ loading, and initial solution pH were investigated. Moreover, the isotherm and kinetic models were investigated to provide a deeper understanding of the elimination mechanism of Pb2+ ions. The adsorption results illustrated that pH has a substantial influence on Pb2+ removal with a highest removal effectiveness at pH = 6 and a fast adsorption rate within 7 h. The kinetic data were well aligned with the pseudo-second-order model while the isotherm data obeyed the Sips model (R2>0.966). The highest adsorption uptake, estimated by the Sips model was 25.09 mg/g. Considering the modeling and characterization of the spent Co-Al LDO/AC, a chemical interaction process was involved in the elimination process and mainly controlled by ion exchange, electrostatic interactions, and surface complexation mechanisms. Accordingly, the Co-Al LDO/AC could have great potential as a promising hybrid for the purification of toxic Pb2+ ions from contaminated water streams.

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Section: Surface Functional Groupsmentioning

confidence: 97%

Co-Al layered double oxide activated carbon composite for eliminating lead ions from water

Abushawish,

Chatla,

Almanassra

et al. 2024

J. Phys.: Conf. Ser.

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“…According to figure 2a, the FT-IR analysis of OCNT revealed several functional groups. The absorption peaks at 3300-3500 cm -1 were attributed to the O-H stretching vibrations, demonstrating the existence of hydroxyl groups (-OH) on the surface of the OCNT [12]. The peaks at 2800-3000 cm -1 corresponded to C-H stretching vibrations, indicating the presence of sp3 hybridized carbon atoms bonded to hydrogen atoms.…”

Section: Ocnt Characterizationmentioning

confidence: 97%

Removal of rhodamine b and alizarin red from aqueous solutions by oxidized carbon nanotubes: kinetics and isotherm Study

Khalil,

Almanassra,

Chatla

et al. 2024

J. Phys.: Conf. Ser.

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Alizarin Red and Rhodamine B are widely used dyes in the textile, paper, and plastic industries. However, the disposal or release of these dyes into the environment can negatively impact on both the environment and human health. In the present study, oxidized carbon nanotubes (OCNT) were used to eliminate Alizarin Red and Rhodamine B from contaminated water in batch adsorption experiments. The adsorption outcomes suggested that OCNT has the potential to be an effective material for the removal of these dyes from contaminated water. The kinetics modeling revealed that the adsorption process of both dyes onto OCNT follows the pseudo-second-order model, indicating a chemisorption process. Moreover, the OCNT has indicated fast kinetics in which the equilibrium was achieved in 4 h. The isotherm study demonstrated that the Freundlich isotherm model best fits the experimental data, suggesting that dyes’ adsorption onto OCNT is a monolayer adsorption process. The maximum adsorption capacities were 124.7 and 614.7 mg/g for Rhodamine B and Alizarin Red, respectively. The adsorption of these dyes was found to be more efficient at pH values of 6-8. This study suggests that OCNT can be an effective adsorbent for removing Alizarin Red and Rhodamine B from contaminated water.

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“…Like mesoporous carbon-based catalysts, they are often modified, or "doped" with additional materials, to alter the available specific surface area and increase micropore development, i.e., through nitrogen doping [218][219][220][221]. There are countless other examples of such experimental work, including the modification of carbon nanospheres with phosphorus [222], the synthesis of a dual-modified phosphomolybdic acid/silver carbon composite [223], the production of jet fuel through the hydrodeoxygenation of isoeugenol over a carbon-supported platinum catalyst [224], and many more [225,226].…”

Section: Activated Carbonsmentioning

confidence: 99%

A Comprehensive Review of Fine Chemical Production Using Metal-Modified and Acidic Microporous and Mesoporous Catalytic Materials

Lantos,

Kumar,

Saha

2024

Catalysts

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Fine chemicals are produced in small annual volume batch processes (often <10,000 tonnes per year), with a high associated price (usually >USD 10/kg). As a result of their usage in the production of speciality chemicals, in areas including agrochemicals, fragrances, and pharmaceuticals, the need for them will remain high for the foreseeable future. This review article assesses current methods used to produce fine chemicals with heterogeneous catalysts, including both well-established and newer experimental methods. A wide range of methods, utilising microporous and mesoporous catalysts, has been explored, including their preparation and modification before use in industry. Their potential drawbacks and benefits have been analysed, with their feasibility compared to newer, recently emerging catalysts. The field of heterogeneous catalysis for fine chemical production is a dynamic and ever-changing area of research. This deeper insight into catalytic behaviour and material properties will produce more efficient, selective, and sustainable processes in the fine chemical industry. The findings from this article will provide an excellent foundation for further exploration and a critical review in the field of fine chemical production using micro- and mesoporous heterogeneous catalysts.

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High-efficiency removal of hexavalent chromium from contaminated water using nitrogen-doped activated carbon: kinetics and isotherm study

Cited by 25 publications

References 62 publications

Co-Al layered double oxide activated carbon composite for eliminating lead ions from water

Co-Al layered double oxide activated carbon composite for eliminating lead ions from water

Removal of rhodamine b and alizarin red from aqueous solutions by oxidized carbon nanotubes: kinetics and isotherm Study

A Comprehensive Review of Fine Chemical Production Using Metal-Modified and Acidic Microporous and Mesoporous Catalytic Materials

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