Removal of cephalexin from artificial wastewater by mesoporous silica materials using Box-Behnken response surface methodology

Panahi, Ayat Hossein; Ashrafi, Syed Davod; Kamani, Hossein; Khodadadi, Maryam; Lima, Éder C.; Mostafapour, Ferdos Kord; Mahvi, Amir Hossein

doi:10.5004/dwt.2019.24109

Cited by 35 publications

(7 citation statements)

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“…However, 60 min was enough to achieve more than 80% of the CFX removal. Panahi et al [27] reported that the optimal removal of CFX (90%) by mesoporous silica materials was recorded with pH 3, 800 mg/L of the adsorbent dose, for 50 mg/L of CFX at 40 • C, and after 30 min. Initial CFX concentration (10-50 mg/100 mL) (x 1 ), APJAP dosage (3-10 mg/100 mL) (x 2 ), time (10-60 min) (x 3 ), and pH (4-9) (x 4 ).…”

Section: Optimization and Deep Learning Studymentioning

confidence: 99%

Cephalexin Adsorption by Acidic Pretreated Jackfruit Adsorbent: A Deep Learning Prediction Model Study

Al-Gheethi

Salleh

Noman

et al. 2022

Water

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Cephalexin (CFX) residues in the environment represent a major threat to human health worldwide. Herein we investigate the use of novel approaches in deep learning in order to understand the mechanisms and optimal conditions for the sorption of cephalexin in water onto an acidic pretreated jackfruit peel adsorbent (APJPA). The interaction between the initial concentration of CFX (10–50 mg/100 mL), APJAP dosage (3–10 mg/100 mL), time (10–60 min), and the pH (4–9), was simulated using the one-factor-at-a-time method. APJPA was characterized by FESEM images showing that APJPA exhibits a smooth surface devoid of pores. FTIR spectra confirmed the presence of -C-O, C–H, C=C, and -COOH bonds within the APJPA. Maximum removal was recorded with 6.5 mg/100 mL of APJAP dosage, pH 6.5, after 35 min and with 25 mg/100 mL of CFX, at which the predicted and actual adsorption were 96.08 and 98.25%, respectively. The simulation results show that the dosage of APJAP exhibits a high degree of influence on the maximum adsorption of CFX removal (100%) between 2 and 8 mg dose/100 mL. The highest adsorption capacity of APJAP was 384.62 mg CFX/g. The simulation for the effect of pH determined that the best pH for the CFX adsorption lies between pH 5 and 8.

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Section: Optimization and Deep Learning Studymentioning

confidence: 99%

Cephalexin Adsorption by Acidic Pretreated Jackfruit Adsorbent: A Deep Learning Prediction Model Study

Al-Gheethi

Salleh

Noman

et al. 2022

Water

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“…The presence of calcium ions increases the adsorption rate at pH values higher than 4.5 owing to the formation of ternary complexes through calcium-bridging. However, compared with other adsorptive materials, MCM-41 still has a low capacity of removing antibiotics from wastewaters, which suggests the need for further research and investigations [ 199 ]. Moreover, the adsorption capacity of ciprofloxacin hydrochloride using an iron-modified MCM-41 was investigated.…”

Section: Application Of Mesoporous Silica Nanoparticlesmentioning

confidence: 99%

Mesoporous Silica Platforms with Potential Applications in Release and Adsorption of Active Agents

et al. 2020

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In recent years, researchers focused their attention on mesoporous silica nanoparticles (MSNs) owing to the considerable advancements of the characterization methods, especially electron microscopy methods, which allowed for a clear visualization of the pore structure and the materials encapsulated within the pores, along with the X-ray diffraction (small angles) methods and specific surface area determination by Brunauer–Emmett–Teller (BET) technique. Mesoporous silica gained important consideration in biomedical applications thanks to its tunable pore size, high surface area, surface functionalization possibility, chemical stability, and pore nature. Specifically, the nature of the pores allows for the encapsulation and release of anti-cancer drugs into tumor tissues, which makes MSN ideal candidates as drug delivery carriers in cancer treatment. Moreover, the inner and outer surfaces of the MSN provide a platform for further functionalization approaches that could enhance the adsorption of the drug within the silica network and the selective targeting and controlled release to the desired site. Additionally, stimuli-responsive mesoporous silica systems are being used as mediators in cancer therapy, and through the release of the therapeutic agents hosted inside the pores under the action of specific triggering factors, it can selectively deliver them into tumor tissues. Another important application of the mesoporous silica nanomaterials is related to its ability to extract different hazardous species from aqueous media, some of these agents being antibiotics, pesticides, or anti-tumor agents. The purpose of this paper is to analyze the methods of MSN synthesis and related characteristics, the available surface functionalization strategies, and the most important applications of MSN in adsorption as well as release studies. Owing to the increasing antibiotic resistance, the need for developing materials for antibiotic removal from wastewaters is important and mesoporous materials already proved remarkable performances in environmental applications, including removal or even degradation of hazardous agents such as antibiotics and pesticides.

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“…Currently, various biological and physicochemical methods have been employed for pollutant removal, including advanced oxidation, biodegradation, adsorption, and flocculation. − The complete degradation and oxidation of HA is difficult because of the refractory character. Among these methods, adsorption is the most common method used for contaminant removal in the wastewater treatment process with the advantages of no potential secondary pollutants, efficient removal rate, and simple technical requirement. − …”

Section: Introductionmentioning

confidence: 99%

Study of Humic Acid Adsorption Character on Natural Maifan Stone: Characterization, Kinetics, Adsorption Isotherm, and Thermodynamics

Luo

et al. 2020

ACS Omega

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In this paper, the adsorption of humic acid (HA) on natural maifan stone (MS) in aqueous medium was investigated. The changes in MS after adsorption have been characterized explicitly. The adsorption behavior was studied by varying the factors of pH (5−10), reaction time (10−180 min), initial HA concentration (5−50 mg/L), adsorbent dosage (0.1−1.2 g), and temperature (25−45 °C). The kinetics of the adsorption process of HA was fitted well with the pseudo-second-order model (R 2 = 0.99). The isothermal results revealed that the adsorption process is favorable, and highly fitting Langmuir models (R 2 > 0.99) were used. Additionally, the obtained maximum adsorption capacity of MS for HA was approximately 1 mg/g. The adsorption process of HA onto MS was endothermic according to the thermodynamic study. The changes in the excitation−emission−matrix of HA and the X-ray diffraction of MS after adsorption indicate the interaction of HA and MS. However, the reason for these changes is still unclear. Thus, the results show that the natural MS exhibited a certain adsorption capacity for HA. It is promising to develop novel natural MS-based materials for adsorption of HA.

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Removal of cephalexin from artificial wastewater by mesoporous silica materials using Box-Behnken response surface methodology

Cited by 35 publications

References 50 publications

Cephalexin Adsorption by Acidic Pretreated Jackfruit Adsorbent: A Deep Learning Prediction Model Study

Cephalexin Adsorption by Acidic Pretreated Jackfruit Adsorbent: A Deep Learning Prediction Model Study

Mesoporous Silica Platforms with Potential Applications in Release and Adsorption of Active Agents

Study of Humic Acid Adsorption Character on Natural Maifan Stone: Characterization, Kinetics, Adsorption Isotherm, and Thermodynamics

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