Graphene-based materials behaviour for dyes adsorption

Paton-Carrero, A.; Sánchez, Paula; Sánchez-Silva, L.; Romero, Amaya

doi:10.1016/j.mtcomm.2021.103033

Cited by 22 publications

(18 citation statements)

References 63 publications

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“…For the adsorbent amount of 0.5 g, the retention efficiency of the HCWS3 material decreased significantly to values of 83.51% for MB and 42.35% for PRM. The decrease in adsorbent holding capacity with increasing adsorbent mass can be explained as follows: (i) increasing the amount of adsorbent at a constant concentration and volume of pollutant will lead to unsaturation of the adsorption centers during the process, and (ii) it may be due to the interaction of adsorbent particles, such as aggregation resulting from using a higher amount of HCWS3—such aggregation would lead to a decrease in the total surface area of the adsorbent and an increase in the diffusion paths [ 57 ].…”

Section: Resultsmentioning

confidence: 99%

Walnut Shell Biowaste Valorization via HTC Process for the Removal of Some Emerging Pharmaceutical Pollutants from Aqueous Solutions

Țurcanu

Matei

Râpă

et al. 2022

IJMS

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This research emphasizes the performance of some eco-friendly carbon materials as hydrochars (HC) obtained by the hydrothermal carbonization (HTC) process applied to walnut shell (WS) biowaste. These materials display promising properties that can be used for environmental applications such as emerging pharmaceutical pollutant retention from water sources. Thus, three hydrochars coded HCWS1, HCWS2, and HCWS3 were obtained using a dynamic autoclave in specific conditions—temperature of 220 °C, autogenous pressure, 1:10 biomass–water weight ratio—and for three different reaction times, 1 h, 6 h, and 12 h. The HCWSs were characterized by means of ATR-FTIR and SEM-EDS analyses and tested as possible adsorbents to assess the removal efficiencies of some emerging pharmaceutical pollutants (paracetamol and methylene blue) by UV–VIS spectrophotometry. Kinetic and adsorption studies were carried out. The best results were obtained for the HCWS3 hydrochar. Further perspectives include an activation step of the hydrochars and their testing on other emerging pharmaceutical pollutants.

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Section: Resultsmentioning

confidence: 99%

Walnut Shell Biowaste Valorization via HTC Process for the Removal of Some Emerging Pharmaceutical Pollutants from Aqueous Solutions

Țurcanu

Matei

Râpă

et al. 2022

IJMS

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“…Cinética de adsorção de acetaminofeno sobre grafite e sobre óxido de grafeno multicamada produzido a partir da esfoliação térmica do grafite seguido de ozonização e sonicação A cinética de adsorção de acetaminofeno sobre o óxido de grafeno multicamada é apresentada na Figura 2. Testes de adsorção também foram realizados com o grafite sem tratamento, que resultou em total ausência de adsorção, como resultado de sua baixa área superficial e afinidade com o adsorbato (Paton-Carrero et al, 2022). Por outro lado, o óxido de grafeno multicamadas apresentou uma rápida adsorção do acetaminofeno em sua superfície.…”

Section: Caracterização Do Grafite Original E Do óXido De Grafeno Mul...unclassified

Aplicação de óxido de grafeno multicamada na remoção de fármacos dissolvidos em solução aquosa

Neckel¹,

Moreira²,

Virmond³

et al. 2023

Anais Do Congresso Brasileiro De Engenharia Química Em Iniciação Científica

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“…Finally, adsorption efficiency can be improved if the adsorbents can be recovered and regenerated for reuse, leading to reduced cost of adsorption for industrial application. [14] For applications of adsorption in wastewater treatment, studying the influence of adsorbent amount, contact time, and regeneration or reuse of adsorbent to evaluate the maximum adsorption capacity are indispensable factors. The dominant and unique feature of the adsorption method is that no other reagent is needed to promote the reaction rate between adsorbent and adsorbate.…”

Section: Adsorptionmentioning

confidence: 99%

“…To achieve this goal, the effects of contact time, working pH, working temperature, adsorbent dosage, ionic strength, and kinetic study need to be optimised. The main properties of these factors are listed in Table 3 [12f,14a,c,15] …”

Section: Introductionmentioning

confidence: 99%

Graphene Oxide‐Based Adsorbents for Organic‐Dyes Removal from Contaminated Water: A Review

Tran

2022

Zeitschrift anorg allge chemie

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Polluted organic dyes in water are considered as some of the most serious problems affecting humans. Adsorption techniques using traditional adsorbents such as clay, zeolite, silica, active carbon, and polymers are low cost, safe, and efficient for the treatment of organic dyes in contaminated water. However, traditional adsorbents usually have low adsorption capacity (q max ). To improve q max , graphene oxide (GO) is considered as an excellent adsorption enhancer owing to its two-dimensional single atomic layer material of sp 2 -hybridised carbon atoms arranged in a honeycomb lattice structure with high surface area, high solubility, good chemical stability, strong mechanical strength, and excellent thermal stability. In this review, the synthesis and advantage results on improving the adsorption efficiency and q max when applying GO-based nanocomposites as nanosorbents for organic-dye removal are systematised and discussed in detail.

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Graphene-based materials behaviour for dyes adsorption

Cited by 22 publications

References 63 publications

Walnut Shell Biowaste Valorization via HTC Process for the Removal of Some Emerging Pharmaceutical Pollutants from Aqueous Solutions

Walnut Shell Biowaste Valorization via HTC Process for the Removal of Some Emerging Pharmaceutical Pollutants from Aqueous Solutions

Aplicação de óxido de grafeno multicamada na remoção de fármacos dissolvidos em solução aquosa

Graphene Oxide‐Based Adsorbents for Organic‐Dyes Removal from Contaminated Water: A Review

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