Ionic gelation synthesis, characterization and adsorption studies of cross-linked chitosan-tripolyphosphate (CS-TPP) nanoparticles for removal of As (V) ions from aqueous solution: kinetic and isotherm studies

Hamidi, Farshad; Aghdam, Mojtaba Azadi; Johar, Fatemeh; Mehdinejad, Mohammad Hadi; Baghani, Abbas Norouzian

doi:10.1080/15569543.2021.1933532

Cited by 7 publications

(3 citation statements)

References 78 publications

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“…The RL value above one describes an unfavorable adsorption while the RL values among 0 to 1 describe a favorable reaction. RL value of zero mentions at an irreversible reaction while RL value of one describes a linear reaction 55 . In present work, the value of computed RL was less than one, which means, the adsorption of Pb (II) on MMT-K 10 is a favorable process.…”

Section: Resultsmentioning

confidence: 99%

Modeling, optimization and efficient use of MMT K10 nanoclay for Pb (II) removal using RSM, ANN and GA

Hamidi

Baghani

Kasraee

et al. 2023

Sci Rep

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Regarding the long-term toxic effects of Pb (II) ions on human health and its bioaccumulation property, taking measures for its reduction in the environment is necessary. The MMT-K10 (montmorillonite-k10) nanoclay was characterized by XRD, XRF, BET, FESEM, and FTIR. The effects of pH, initial concentrations, reaction time, and adsorbent dosage were studied. The experimental design study was carried out with RSM-BBD method. Results prediction and optimization were investigated with RSM and artificial neural network (ANN)-genetic algorithm (GA) respectively. The RSM results showed that the experimental data followed the quadratic model with the highest regression coefficient value (R2 = 0.9903) and insignificant lack of fit (0.2426) showing the validity of the Quadratic model. The optimal adsorption conditions were obtained at pH 5.44, adsorbent = 0.98 g/l, concentration of Pb (II) ions = 25 mg/L, and reaction time = 68 min. Similar optimization results were observed by RSM and artificial neural network-genetic algorithm methods. The experimental data revealed that the process followed the Langmuir isotherm and the maximum adsorption capacity was 40.86 mg/g. Besides, the kinetic data indicated that the results fitted with the pseudo-second-order model. Hence, the MMT-K10 nanoclay can be a suitable adsorbent due to having a natural source, simple and inexpensive preparation, and high adsorption capacity.

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Section: Resultsmentioning

confidence: 99%

Modeling, optimization and efficient use of MMT K10 nanoclay for Pb (II) removal using RSM, ANN and GA

Hamidi

Baghani

Kasraee

et al. 2023

Sci Rep

Self Cite

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“…CaCl 2 was added and stirred to disperse it evenly in the solution to promote a hydrophobic effect [ 51 ]. Then, dropwise STPP was added slowly and stirred, so that it interacts electrostatically with the protonated amino group in chitosan [ 52 , 53 ], enhancing the structure and the flame retardancy of the material, then stirred until a homogeneous white liquid was formed. The ratio of the materials involved was CS:HPMC:STPP:CaCl 2 = 1:5:3:3, accounting for 9 wt%, and acetic acid accounts for 0.8 wt%.…”

Section: Methodsmentioning

confidence: 99%

Preparation and Characterization of Chitosan/Hydroxypropyl Methylcellulose Temperature-Sensitive Hydrogel Containing Inorganic Salts for Forest Fire Suppression

Gao,

Zhao,

Wang

2024

Gels

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Effective forest fire suppression remains a critical challenge, necessitating innovative solutions. Temperature-sensitive hydrogels represent a promising avenue in this endeavor. Traditional firefighting methods often struggle to address forest fires efficiently while mitigating ecological harm and optimizing resource utilization. In this study, a novel intelligent temperature-sensitive hydrogel was prepared specially for forest fire extinguishment. Utilizing a one-pot synthesis approach, this material demonstrates exceptional fluidity at ambient temperatures, facilitating convenient application and transport. Upon exposure to elevated temperatures, it undergoes a phase transition to form a solid, barrier-like structure essential for containing forest fires. The incorporation of environmentally friendly phosphorus salts into the chitosan/hydroxypropyl methylcellulose gel system enhances the formation of temperature-sensitive hydrogels, thereby enhancing their structural integrity and firefighting efficacy. Morphological and thermal stability analyses elucidate the outstanding performance, with the hydrogel forming a dense carbonized layer that acts as a robust barrier against the spread of forest fires. Additionally, comprehensive evaluations employing rheological tests, cone calorimeter tests, a swelling test, and infrared thermography reveal the multifaceted roles of temperature-sensitive hydrogels in forest fire prevention and suppression strategies.

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“…Menurut Núñez-Gómez et al (2019), adsorben dari kulit udang dicuci dan keringkan dalam oven kemudian dilakukan proses adsorpsi menggunakan kolom kontinyu mampu menurunkan ion logam Fe 90% dan Mn 88% dengan model isoterm Freundlich. Sedangkan pada penelitian yang dilakukan Hamidi et al (2021), ikatan silang kitosan komersial menggunakan tripolifosfat diadsorpsikan secara batch dengan kecepatan 150 rpm dan variasi waktu 0-150 menit. didapatkan efisiensi penyisihan tertinggi 75% pada pH 6, removal tertinggi 61% untuk konsentrasi awal As 0,5mg/L, removal tertinggi 57% untuk dosis adsorben 0,5 g / L. Konsentrasi kesetimbangan arsenik ditentukan dan dicocokkan dengan isoterm Langmuir, Freundlich, dan Temkin.…”

Section: Pendahuluanunclassified

Efektivitas Adsorben Kitosan - Natrium Tripolifosfat dalam Menurunkan Konsentrasi Fe dan Mn pada Air Sumur

Wibowo,

Firra Rosariawari

2023

INSOLOGI: Jurnal Sains dan Teknologi

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In general, well water or ground water often contains iron (Fe) and manganese (Mn) ions in it. One of the effective water treatment processes to remove heavy metals is adsorption. Natural adsorbents such as chitosan can be effective adsorbents used to reduce heavy metal concentrations in the environment. One of the weaknesses of chitosan is the strength of the mechanical structure and low stability. Therefore, crosslinking modifications were carried out to improve the mechanical structure and reduce solubility. This study aims to determine the effect of sodium tripolyphosphate on the process of making chitosan shrimp shell-sodium tripolyphosphate adsorbent and to determine the optimum conditions of the variation of the adsorbent and the mass used. The research variables used were the sodium-tripolyphosphate concentration of 0.25%; 0.50%; and 1.00%, the mass of the adsorbent in the column was 5 grams and 7.5 grams, and the sampling times were 20 minutes, 40 minutes, 60 minutes, 80 minutes, 100 minutes, 120 minutes, 140 minutes and 160 minutes. The results showed that the 1% chitosan-sodium tripolyphosphate adsorbent with a mass of 7.5 grams was the most optimal in reducing the content of Fe by 92% and Mn by 93%.

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Ionic gelation synthesis, characterization and adsorption studies of cross-linked chitosan-tripolyphosphate (CS-TPP) nanoparticles for removal of As (V) ions from aqueous solution: kinetic and isotherm studies

Cited by 7 publications

References 78 publications

Modeling, optimization and efficient use of MMT K10 nanoclay for Pb (II) removal using RSM, ANN and GA

Modeling, optimization and efficient use of MMT K10 nanoclay for Pb (II) removal using RSM, ANN and GA

Preparation and Characterization of Chitosan/Hydroxypropyl Methylcellulose Temperature-Sensitive Hydrogel Containing Inorganic Salts for Forest Fire Suppression

Efektivitas Adsorben Kitosan - Natrium Tripolifosfat dalam Menurunkan Konsentrasi Fe dan Mn pada Air Sumur

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