Adsorption of malachite green and methyl violet 2B by halloysite nanotube: Batch adsorption experiments and Box-Behnken experimental design

Altun, Türkan; Ecevit, Hüseyin

doi:10.1016/j.matchemphys.2022.126612

Cited by 41 publications

(6 citation statements)

References 39 publications

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“…As the temperature increases, the Langmuir model (R 2 = 0.974) outperforms the Freundlich model (R 2 = 0.898), indicating a greater tendency for dye adsorption to occur through a monolayer process 59 . The adsorption capacity increased with the increase of temperature, and the maximum adsorption capacity of Langmuir was 50.270 mg/g at 40 ℃.…”

Section: Results and Analysismentioning

confidence: 99%

On the adsorption characteristics and mechanism of methylene blue by ball mill modified biochar

Wang,

Tan,

Yang

et al. 2023

Sci Rep

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In this study, modified biochar (BRB) was prepared from rice straw by ball milling technique and used for the adsorption of methylene blue (MB) in wastewater. The BRB was characterized by SEM, FTIR and XPS, and the adsorption model and Box–Behnken design were used to optimize the five influencing factors. The results showed that the ball milling technique could increase the content of functional groups (–OH, C=C and C–O, etc.) and aromatic structures on the surface of biochar, thus facilitating the removal of MB. The isotherm model was consistent with the Langmuir adsorption model (R2 = 0.947) and the maximum adsorption capacity was 50.27 mg/g. The adsorption kinetics was consistent with the pseudo-second-order kinetic model (R2 = 1) and the adsorption rate was mainly controlled by chemisorption. The thermodynamic model confirmed that the adsorption process was a spontaneous heat absorption reaction. The maximum adsorption efficiency was 99.78% under the optimal conditions (40℃, pH 8, reaction time = 90 min, dosing amount = 0.1 mg), and the adsorption efficiency could be improved by increasing the pH and BRB dosing amount. The surface functional groups and crystal structure properties of BRB were the main determinants of adsorption, and it was clarified that physical adsorption, electrostatic attraction and π-π interaction were the main mechanisms for the adsorption of MB by BRB. The main mechanisms were clarified. Therefore, BRB is an economic, efficient and green adsorption material with good potential for the removal of dye pollutants in the aqueous environment.

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Section: Results and Analysismentioning

confidence: 99%

On the adsorption characteristics and mechanism of methylene blue by ball mill modified biochar

Wang,

Tan,

Yang

et al. 2023

Sci Rep

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“…This can be explained that during the adsorption process, no chemical bonds are formed between the dye and the absorbent as evidenced by the absence of new peaks formed in the KAKM spectrum after adsorption. Where the interaction between adsorbent and adsorbate is only in the form of weak intermolecular attractive forces, such as Van der Waals forces, electrostatic interactions, and weak hydrogen bonds between molecules [25].…”

Section: Ftirmentioning

confidence: 99%

Adsorption of Malachite Green Using Activated Carbon from Mangosteen Peel: Optimization Using Box-Behnken Design

Yuningsih,

Ariani,

Suprapto

et al. 2024

JRM

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In this research, activated carbon from mangosteen peel has been synthesized using sulfuric acid as an activator. The adsorption performance of the activated carbon was optimized using malachite green dye as absorbate. Malachite green dye waste is a toxic and non-biodegradable material that damages the environment. Optimization of adsorption processes was carried out using Response Surface Methodology (RSM) with a Box-Behnken Design (BBD). The synthesized activated carbon was characterized using FTIR and SEM instruments. The FTIR spectra confirmed the presence of a sulfonate group (-SO 3 H) in the activated carbon, indicating that the activation process using sulfuric acid was successful. SEM characterization shows that activated carbon has porous morphology. Optimization was carried out for three adsorption parameters, namely contact time (20, 60, and 120 min), adsorbent mass (0.005, 0.025, and 0.05 g), and initial concentration of malachite green solution (5, 50, and 100 mg•L -1 ). The concentration of the malachite green solution was determined using a UV-Vis spectrophotometer at the maximum wavelength of malachite green, 618 nm. The optimum of malachite green adsorption using mangosteen peel activated carbon was obtained at a contact time of 80 min, an adsorbent mass of 0.032 g, and malachite green initial concentration of 25 mg•L -1 , with a maximum removal percentage and maximum adsorption capacity of 93.66% and 19.345 mg•g -1 , respectively.

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“…Trong những năm gần đây, do có những đặc tính ưu việt như cấu trúc siêu nhỏ dạng ống, không độc, độ bền cơ học cao, … và có giá thành rẻ hơn so với nano cacbon dạng ống nên HAL được các nhà khoa học quan tâm và áp dụng nhiều trong các lĩnh vực ứng dụng khác nhau như trong dược phẩm, y học, thực phẩm, vật liệu cao cấp, nông nghiệp và môi trường [15,16]. Haloysit là một loại vật liệu hấp phụ tiềm năng với giá thành rẻ và có hiệu quả trong việc loại bỏ các ion kim loại nặng và hợp chất hữu cơ gây ô nhiễm [13,14,17,18].…”

Section: Giới Thiệu Chungunclassified

Adsorption properties of nanotube type halloysite clay mineral for La3+ ions

Le Thi Phuong Thao,

Vo Thi Hanh,

Bui Hoang Bac

et al. 2024

Vietnam j. catal. adsorp.

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This paper presents the results of research on the adsorption capacity of La3+ ions from aqueous solution of nanotube-type halloysite. The influence of operational conditions such as contact time, initial concentration of La3+, initial pH of solution, halloysite mass and temperature on the adsorption of La3+ had also been examined. The results show that the optimal efficiency and adsorption capacity of La3+ reached 90.19% and 3.76 mg/g in the suitable conditions: haloysite mass 0.6 g/50 mL solution, initial La3+ ion concentration 50 mg/L, pH 5.8, contact time 60 minutes at room temperature (25oC). The adsorption isotherm was studied based on both Langmuir and Freundlich models. The adsorption kinetics were studied by both pseudo-first-order and pseudo-second-order kinetic models. These results open up prospects for the application of haloysite clay minerals to remove and recover La in polluted water.

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Adsorption of malachite green and methyl violet 2B by halloysite nanotube: Batch adsorption experiments and Box-Behnken experimental design

Cited by 41 publications

References 39 publications

On the adsorption characteristics and mechanism of methylene blue by ball mill modified biochar

On the adsorption characteristics and mechanism of methylene blue by ball mill modified biochar

Adsorption of Malachite Green Using Activated Carbon from Mangosteen Peel: Optimization Using Box-Behnken Design

Adsorption properties of nanotube type halloysite clay mineral for La3+ ions

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