Biosorption of indigo carmine from aqueous solution by Terminalia Catappa shell

Hevira, Linda; Zilfa,; Rahmayeni,; Ighalo, Joshua O.; Zein, Rahmiana

doi:10.1016/j.jece.2020.104290

Cited by 91 publications

(33 citation statements)

References 58 publications

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“…This may be observed by the negligible differences between the model estimated q e,cal values and the experimental q e,exp values for the initial Cu(II) concentrations being studied. Thus, the pseudo-second-order model being the best fit suggests that both the concentration of Cu(II) in solution and the amount of available active sites on the iron precipitate powder can be used to mathematically describe the intrinsic kinetic adsorption constant. , …”

Section: Resultsmentioning

confidence: 99%

“…Laboratory experimental runs were performed in several 250 mL Erlenmeyer flasks, which were placed inside a thermostatic temperature-controlled shaker until equilibrium was attained. Working solutions of 50 mL Cu(II) at the studied initial concentrations (150, 300, 400, and 500 mg/L), contact times (5,10,15,20,40,60, and 120 min), and sorption temperatures (30,40,45,50, and 55 °C) were all investigated at pH 5, 150 rpm mixing speed, and 1 g adsorbent dosage. After equilibrium time, suspensions were passed through a 0.45 μm syringe filter.…”

Section: Methodsmentioning

confidence: 99%

“…Thus, the pseudosecond-order model being the best fit suggests that both the concentration of Cu(II) in solution and the amount of available active sites on the iron precipitate powder can be used to mathematically describe the intrinsic kinetic adsorption constant. 40,41 Elovich's equation describes the kinetics of chemical adsorption systems. The model is very applicable to a profound heterogeneous system.…”

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confidence: 99%

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Kinetics, Thermodynamics, and Mechanism of Cu(II) Ion Sorption by Biogenic Iron Precipitate: Using the Lens of Wastewater Treatment to Diagnose a Typical Biohydrometallurgical Problem

2021

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The feasibility of improving typical biohydrometallurgical operation to minimize copper losses was investigated by the use of biogenic iron precipitate for the uptake of Cu(II) ions from aqueous solutions. The iron precipitate was obtained from mineral sulfide bioleaching and characterized using SEM/EDS, XRD, FTIR, BET, TGA, and pH pzc analyses. The results show that the precipitate is highly heterogeneous and that Cu(II) ion adsorption can be described by both Freundlich and Langmuir adsorption isotherms, with a maximum adsorption capacity of 7.54 mg/g at 30 °C and 150 mg/L. The sorption followed pseudosecond-order kinetics, while the major presence of −OH and −NH 2 functional groups initiated a chemisorption mechanism through an ion-exchange pathway for the process. Ionic Cu(II) (radius (0.72 Å)) attached easily to the active sites of the precipitate than hydrated Cu(II) (radius (4.19 Å)). With an estimated activation energy of 23.57 kJ/mol, the obtained thermodynamic parameters of ΔS°(0.034−0.050 kJ/mol K), ΔG°(8.37−10.64 kJ/mol), and ΔH°(20.07−23.81 kJ/mol) indicated that the adsorption process was chemically favored, nonspontaneous, and endothermic, respectively. The 43% Cu(II) removal within 60 min equilibrium contact time at pH 5 was indicative of the reduced efficiency of copper extraction observed in a real-life biohydrometallurgical process due to sorption by the iron precipitate. The result of this study might provide an insight into the management of the biohydrometallurgical process to minimize copper losses. It may also help mitigate environmental pollution caused by the disposal of these biogenic iron precipitate residues.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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confidence: 99%

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Kinetics, Thermodynamics, and Mechanism of Cu(II) Ion Sorption by Biogenic Iron Precipitate: Using the Lens of Wastewater Treatment to Diagnose a Typical Biohydrometallurgical Problem

2021

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“…Although technologies based on osmosis, oxidation and membrane separation can be effective, operational costs are sometimes high and implementation of these methods are energy‐intensive due to high conversion required and an exhibition of residual activity which are potential risks 20. Adsorption is a simple and cost‐effective method for removing toxins from water, based on the methods used 21, 22. Sorbent materials reported for CBZ removal includes SBA‐15 7, multi‐walled CNTs, activated carbon (AC) 23, biochar 24, nano‐adsorbents 10, and graphene 25.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances on the Aqueous Phase Adsorption of Carbamazepine

et al. 2022

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Carbamazepine (CBZ) is a pharmaceutical compound used in medical practice. Due to the ecotoxicological risk of its presence in the aqueous environment, researchers have been investigating its removal by adsorption technique. The aim of this study is to review the works done on the removal of CBZ from water by adsorption. Carbon‐based materials were the best types of adsorbent for CBZ uptake (> 200 mg g−1). Molecularly imprinted polymer (MIP) and carbon nanotubes (CNTs) showed especially good adsorption capacities. The key mechanisms of CBZ adsorption were π‐π interaction, electrostatic interactions, hydrogen‐bonding and hydrophobic interactions. Classical equilibrium isotherm models like Langmuir and Freundlich were always best‐fits and kinetics modelling was best‐fit to the pseudo‐second order model. The thermodynamics modelling of CBZ adsorption showed it was spontaneous and endothermic for most adsorbents. Methanol and acetone were especially effective for the desorption of CBZ from adsorbents and can achieve > 90 % removal even after 4–5 cycles. CBZ competes favorably in adsorption systems with other pharmaceutical species due to the advantages of the hydrophobic effect and molecular size.

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“…Catappa (Terminalia catappa L.) leaves is a tropical plant in Combretacease family, which grows mainly in tropical areas such as Asia, Africa, and Australia. [17] It has shiny dark green colored leaves, with light green coloring underneath. Generally, it is about 15-25 cm in length and 10-14 cm wide.…”

Section: Common Properties Of Terminalia Catapa L Leaves As Therapeutic Modalitiesmentioning

confidence: 99%

Antioxidative Potential of Terminalia catappa L. Leaves in Reducing Plasma Ox-Ldl in Atherosclerosis

Tiberias

Gunawan

2022

Int J Res Rev

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Atherosclerosis is an illness due to plaque build-up in the artery. The plaque, mainly consisted of fat, cholesterol, calcium would harden and narrows the blood vessels, interfering with the blood distribution. Hypercholesterolemia is one of the main causes of atherosclerosis. Arterial endothelial permeability alterations due to increasing plasma cholesterol levels allow LDL-C to migrate into the artery, resulting in a series of vascular changes. Several complications of atherosclerosis includes cardiac arrest, stroke, even death. Due to its fatality and lack of symptoms, it is crucial to prevent atherosclerosis. Terminalia catappa L. has been recognized for its antioxidative properties. It contains flavonoids, especially quercetin that exhibited protective effects in the cardiovascular system as well as hinders cellular damage. Various studies had found that quercetin possess several atheroprotective qualities, reducing inflammation and cell damage caused by ox-LDL, lipid precipitation, atherosclerotic plaque, as well as serum levels of ox-LDL, LDL-C, IL-6, and. TNF-. Keywords: atherosclerosis, Terminalia catappa L. leaves, ox-LDL, antioxidant, CVD.

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Biosorption of indigo carmine from aqueous solution by Terminalia Catappa shell

Cited by 91 publications

References 58 publications

Kinetics, Thermodynamics, and Mechanism of Cu(II) Ion Sorption by Biogenic Iron Precipitate: Using the Lens of Wastewater Treatment to Diagnose a Typical Biohydrometallurgical Problem

Kinetics, Thermodynamics, and Mechanism of Cu(II) Ion Sorption by Biogenic Iron Precipitate: Using the Lens of Wastewater Treatment to Diagnose a Typical Biohydrometallurgical Problem

Recent Advances on the Aqueous Phase Adsorption of Carbamazepine

Antioxidative Potential of Terminalia catappa L. Leaves in Reducing Plasma Ox-Ldl in Atherosclerosis

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