Equilibrium, kinetic and mechanism studies on the biosorption of Cu2+ and Ni2+ by sulfur-modified bamboo powder

Ai, Tian; Jiang, Xiaojun; Yu, Hongmei; Xu, Hongxiang; Pan, Dawei; Liu, Qingyu; Chen, Dongyu; Li, Jinyang

doi:10.1007/s11814-014-0227-8

Cited by 25 publications

(14 citation statements)

References 36 publications

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“…Negative ΔH 0 values are indicative of an exothermic adsorption process, and positive values indicate an endothermic process. Negative ΔG 0 and ΔH 0 values were also reported in other studies [41,75].…”

Section: Thermodynamic Parameterssupporting

confidence: 83%

Heavy Metal Adsorption by Dewatered Iron-Containing Waste Sludge

Yıldız

Sevinç

2018

Ecological Chemistry and Engineering S

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Drinking water treatment plants produce significant amounts of waste sludge. In this study, removal of Nickel ion by use of wastewater sludge was aimed. The adsorption capability of waste sludge was optimized with varying physical parameters such as pH, adsorbent dosage, adsorbate concentration, contact time, shaking speed and temperature. Initial concentration was set as 25 mg/dm3, absorbent dose was set as 0.3 g/cm3, and temperature was set as 25 °C. Compliance of balance data with Langmuir, Freundlich, Temkin and D-R isotherm models was investigated. The highest R2 values were obtained with Freundlich isotherm (R2 = 0.92-0.95). Adsorption kinetics was analysed using pseudo-first order, pseudo-second order, Weber and Morris intraparticle diffusion and Elovich kinetic models, and the system was found to be in a better compliance with pseudo-second order kinetic model. Iron sludge was used as sorbent, and accordingly total iron ion measurements were carried out to determine its possible effects on water. Additionally, SEM, EDX, FTIR spectroscopy, XRD spectrum and atomic force microscope (AFM) measurements were conducted to determine the interaction between the sorbent and metal ions, in addition to characterization of the sorbent. As indicated by research results, drinking water treatment sludge proved to be a potential adsorbent for removal of nickel(II) ions from the solution.

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Section: Thermodynamic Parameterssupporting

confidence: 83%

Heavy Metal Adsorption by Dewatered Iron-Containing Waste Sludge

Yıldız

Sevinç

2018

Ecological Chemistry and Engineering S

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“…Therefore, pseudo-second order was chosen as the best fit model, demonstrating significant interactions between the adsorbate and the adsorbent, indicating the presence of copper chemisorption on the surface of R. damascena leaves. Several results support the pseudo-second order model for adsorption of copper ions by different biosorbents, including adsorption of Cu 2+ onto activated rubber wood sawdust 30 , Tectona grandis leaf 31 , sour orange residue 32 , banana trunk fiber 33 , sulfurmodified bamboo powder 34 , Platanus orientalis leaf powder 35 .…”

Section: Pseudo-second Order Kinetic Modelmentioning

confidence: 62%

Kinetic, isotherm and thermodynamic aspects of Cu2+ biosorption onto Rosa damascena leaf as a low-cost biosorbent: Optimization of process variables by Response Surface Methodology

Fawzy

Al-Yasi

Galal

et al. 2021

Preprint

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In this study, the Rosa damascena leaf powder was evaluated as a biosorbent for copper removal from aqueous solutions. Optimized conditions of 4.0 g/L biosorbent dosage, pH of 5.5 and initial copper concentration of 55 mg/L obtained by Response Surface Methodology were employed for Cu2+ biosorption by R. damascena leaves and up to 88.7 % Cu2+ was removed. The biosorption data were well ﬁtted to the pseudo-second order and Elovich kinetic models. The Langmuir and Dubinin-Radushkevich isotherm models were also best fit the experimental data showing monolayer isotherm with qmax value of 25.13 mg/g obtained at optimum conditions. Thermodynamic parameters showed the spontaneity, feasibility and exothermic nature of adsorption. Scanning electron microscopy, Energy-Dispersive X-Ray, and Fourier transform infrared spectroscopy were used to characterize the biosorbent before and after Cu2+ biosorption, revealing outstanding structural characteristics and high surface functional groups availability. In addition, immobilized R. damascena leaves adsorbed 90.7 % of copper from aqueous solution, which is greater than free biosorbent (85.3 %). It can be concluded that R. damascena might be employed as a low-cost biosorbent for removing heavy metals from aqueous solutions.

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“…The most commonly used adsorbent is activated carbon [15][16][17][18][19][20][21]. Among the alternative adsorbents that can replace activated carbon, biochar, a by-product of biomass pyrolysis, has recently received extensive attention because of its low cost [14,[22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41].…”

Section: Cu 2+ Removal Experimentsmentioning

confidence: 99%

Cu²⁺ion reduction in wastewater over RDF-derived char

Lee¹,

Park²,

Park³

et al. 2016

Carbon letters

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Refuse-derived fuel (RDF) produced using municipal solid waste was pyrolyzed to produce RDF char. For the first time, the RDF char was used to remove aqueous copper, a representative heavy metal water pollutant. Activation of the RDF char using steam and KOH treatments was performed to change the specific surface area, pore volume, and the metal cation quantity of the char. N 2 sorption, Inductively Coupled Plasma-Atomic Emission Spectrometer (ICP-AES), and Fourier transform infrared spectroscopy were used to characterize the char. The optimum pH for copper removal was shown to be 5.5, and the steam-treated char displayed the best copper removal capability. Ion exchange between copper ions and alkali/alkaline metal cations was the most important mechanism of copper removal by RDF char, followed by adsorption on functional groups existing on the char surface. The copper adsorption behavior was represented well by a pseudo-second-order kinetics model and the Langmuir isotherm. The maximum copper removal capacity was determined to be 38.17 mg/g, which is larger than those of other low-cost char adsorbents reported previously.

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Equilibrium, kinetic and mechanism studies on the biosorption of Cu2+ and Ni2+ by sulfur-modified bamboo powder

Cited by 25 publications

References 36 publications

Heavy Metal Adsorption by Dewatered Iron-Containing Waste Sludge

Heavy Metal Adsorption by Dewatered Iron-Containing Waste Sludge

Kinetic, isotherm and thermodynamic aspects of Cu2+ biosorption onto Rosa damascena leaf as a low-cost biosorbent: Optimization of process variables by Response Surface Methodology

Cu²⁺ion reduction in wastewater over RDF-derived char

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Equilibrium, kinetic and mechanism studies on the biosorption of Cu2+ and Ni2+ by sulfur-modified bamboo powder

Cited by 25 publications

References 36 publications

Heavy Metal Adsorption by Dewatered Iron-Containing Waste Sludge

Heavy Metal Adsorption by Dewatered Iron-Containing Waste Sludge

Kinetic, isotherm and thermodynamic aspects of Cu2+ biosorption onto Rosa damascena leaf as a low-cost biosorbent: Optimization of process variables by Response Surface Methodology

Cu2+ion reduction in wastewater over RDF-derived char

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Cu²⁺ion reduction in wastewater over RDF-derived char