Adsorption and desorption cycles of reactive blue BF-5G dye in a bone char fixed-bed column

Maeda, Celso Hissao; Araki, Carina Akemi; Moretti, Artur Lemes; Barros, Maria Angélica Simões Dornellas de; Arroyo, Pedro Augusto

doi:10.1007/s11356-018-3644-0

Cited by 24 publications

(5 citation statements)

References 28 publications

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“…This process would involve the combination of strong interactions between MB molecules and active sites and weak interactions between MB molecules, corresponding to a multilayer adsorption phenomenon. A similar performance was observed with blue BF-5G reagent on carbonized bone [31]. The results presented in Table 2, for tap water as desorbent, shows irregular qabs and qdes values rising and falling in each cycle.…”

Section: Adsorption-desorption Cycles Studysupporting

confidence: 78%

Studies of Adsorption-Desorption of Methylene Blue in a Fixed-Bed Reactor Filled with Cotton and Tanine Industry Waste

Tenev¹,

Torre²,

Fontana³

et al. 2023

Proceedings of the 21th LACCEI International Multi-Conference for Engineering, Education and Technology (LACCEI 2023): “Leaders

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In this paper, a laboratory scale fixed-bed reactor filled with cotton husk and quebracho chips was used to test the capabilities of these materials to be employed as dyes adsorbent materials in effluent treatment of textile industries. The adsorptiondesorption processes of methylene blue on both adsorbents were studied and the number of effective cycles was determined in each case. Desorbent efficiency of three substances was evaluated: NaCl 0.1 M, ethanol 50% (V/V) and tap water. As much as three adsorption-desorption cycles were obtained in all cases.Keywords--Methylene blue, fixed-bed reactor, cotton husk, quebracho chip.

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Section: Adsorption-desorption Cycles Studysupporting

confidence: 78%

Studies of Adsorption-Desorption of Methylene Blue in a Fixed-Bed Reactor Filled with Cotton and Tanine Industry Waste

Tenev¹,

Torre²,

Fontana³

et al. 2023

Proceedings of the 21th LACCEI International Multi-Conference for Engineering, Education and Technology (LACCEI 2023): “Leaders

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“…Even more serious, many dyes threaten human health seriously because of their toxic, carcinogenic and mutagenic effects [2,3,4,5]. Dyes in the dyeing wastewater could be reused by adsorption and desorption [6]. In recent years, some new synthetic adsorbents and bio-adsorbents originated from agriculture and food industry waste for the removal of dyes wastewater was found and have attracted a lot of attention, such as Amberlite IRA-938 resin [7], starch/poly(alginic acid- cl -acrylamide) nanohydrogel [8], orange peel, sawdust, rice husk and spent substrate of Ganodorma lucidum [9,10,11,12].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Thermodynamics and Dynamics of Three Typical Dyes onto Bio-adsorbent Spent Substrate of Pleurotus eryngii

Xia

Chen

et al. 2019

IJERPH

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Dyeing wastewater is very hard to treat, and adsorption could be a good choice. Spent substrate of Pleurotus eryngii (SSPE) was first used to adsorb malachite green, safranine T and methylene blue from aqueous solutions, and the corresponding adsorption isotherm, thermodynamics and dynamics models were simulated. More than 93% of the dyes were removed with solutions with 100 mg/L of initial dye concentration, 1 g of SSPE and pH of 6.0 after adsorption for 4 h. Freundlich isotherm models fit better the adsorption data than Langmuir models. Adsorption of the dyes onto SSPE was a spontaneous exothermic process based on an adsorption thermodynamics model. SSPE could adsorb the dyes rapidly, and a second-order kinetics model fit better with the adsorption data than a pseudo first-order kinetics model. Accordingly, SSPE could be a good bio-adsorbent for the removal of malachite green, safranine T and methylene blue from the aqueous solution.

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“…(1), the X-ray diffraction (XRD) for both bone char (BC) and nano-bone char (Nano-BC) presented an approximate similar degree of lattice between the structures (2Ɵ). Bone char mainly consists of calcium phosphate, calcium carbonate and carbon (El-Refaey et al 2015;Younesi et al, 2011;Flores-Cano et al, 2016;Maeda et al, 2019). Also, XRD patterns confirmed an increase in the intensity of the nano-bone char peaks than the original bone char with peaks shifting corresponding to the crystal structure.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 98%

Performance of Fast and Slow Phosphorus Release from Nano-Bone Char

et al. 2022

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The study investigates the release of phosphorus (P) from nano-bone char (Nano-BC), which could be a potential P-soil fertilizer. The study evaluated the performance of P releasing from Nano-BC compared to the originated bone char (BC) which was prepared under pyrolysis temperature 650 o C.BC and Nano-BC were characterized by elemental composition, Xray diffraction (XRD), surface areas, Fourier transform infrared (FTIR), and scanning electron microscopy (SEM), showing the physicochemical properties differences.The P-fast release was determined after 24 hours under different conditions (pH, ionic strength, and coexisting ofanion species), while the P-slow release was after 21 days. The performance of P-fast release from Nano-BC was higher than from BC, acidic conditions were more suitable with the privilege for Nano-BC. Higher ionic strength gave the lowest P-releasing amounts for both materials (0.47 to 0.51 mg.g -1 for BC and 0.61 to 0.62 mg.g -1 for Nano-BC). The coexisting SO 4 = anion encouraged the rapid release of P from Nano-BC (8.65 mg.g -1 ) than those for Cland NO 3 anions. For the slow release experiments, Nano-BC gave higher P-release than BC withpH ranging from 4.25 to 9.39 for Nano-BC and 4.75 to 9.75 for BC. The pseudo-second-order kinetic model was correlated quite to the release of ortho-P (R 2 = 0.894, and 0.901for BC, Nano-BC, respectively) and this indicated the chemical nature of the release process of ortho-P. The results could suggest the privilege of using Nano-BC as a soil P fertilizer.

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Adsorption and desorption cycles of reactive blue BF-5G dye in a bone char fixed-bed column

Cited by 24 publications

References 28 publications

Studies of Adsorption-Desorption of Methylene Blue in a Fixed-Bed Reactor Filled with Cotton and Tanine Industry Waste

Studies of Adsorption-Desorption of Methylene Blue in a Fixed-Bed Reactor Filled with Cotton and Tanine Industry Waste

Adsorption Thermodynamics and Dynamics of Three Typical Dyes onto Bio-adsorbent Spent Substrate of Pleurotus eryngii

Performance of Fast and Slow Phosphorus Release from Nano-Bone Char

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