Biosorption of Cu2+, Co2+ and Ni2+ from aqueous solution by modified corn silk: Equilibrium, kinetics, and thermodynamic studies

Yu, Hongmei; Pang, Jing; Ai, Tian; Liu, Lei

doi:10.1016/j.jtice.2016.01.026

Cited by 51 publications

(11 citation statements)

References 39 publications

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“…Such materials are the by-products of industrial materials produced from natural resources such as peat, wood, barley, brown rice, hay, peanut shell, almond shell, nutshell, biomass, soybean, cottonseed meal, bark, sugar beet pulp, leaves, green algae, coconut wastes, wood chips, fertilizer, corn silk, and dried aquatic plants, as well as plant wastes and other industrial products [1,[7][8][9]. All of these materials have been the subject of numerous studies due to their ability to remove trace metals from water.…”

Section: Introductionmentioning

confidence: 99%

Kinetic and Isotherm Analysis of Cu(II) Adsorption onto Almond Shell (Prunus Dulcis)

Yıldız

2017

Ecological Chemistry and Engineering S

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Abstract:In the work, adsorption of Cu 2+ ions onto almond shell were investigated under different operational conditions. Almond shell was used without any pretreatment prior to the tests. The optimum conditions for adsorption of Cu 2+ ions through almond shell were determined to be; pH 5.0, temperature 20ºC, shaking rate 125 rpm, sorbent dose 0.3 g and initial Cu 2+ ion concentration 50 mg/dm 3 . The equilibrium duration of the system was 60 minutes. The sorption capacities of the sorbents were predicted with the aid of equilibrium and kinetic models. The interactions of peanut shell with metal ions were constituted by SEM, EDX, FT-IR, XRD and AFM. The pseudo-first-order, pseudo-second-order, Weber-Morris, Elovich model and Bangham kinetic models were applied to test the experimental data. The Cu +2 ions adsorption onto almond shell was better defined by the pseudo-second-order kinetic model, for initial pH. The equilibrium data were evaluated using Langmuir, Freundlich, Temkin, D-R and Harkins Jura isotherms. The highest R 2 value in isotherm studies was obtained from Langmiur isotherm (R 2 = 0.98) for the inlet concentration.

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Section: Introductionmentioning

confidence: 99%

Kinetic and Isotherm Analysis of Cu(II) Adsorption onto Almond Shell (Prunus Dulcis)

Yıldız

2017

Ecological Chemistry and Engineering S

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“…The delivery of contaminant such as organic between the adsorbent and the PW solution below equilibrium conditions is significant in sympathetic the capacity of the adsorbent for the organic elimination (Ardejani et al, 2007) and (Ali Saleh Jafer et al, 2019). The relationship between the quantities of the oil field pollutant adsorbed and the concentration at equilibrium was investigated using the linear form of the Langmuir and Freundlich isotherms, the most commonly used adsorption isotherm models (Yu et al, 2016) and (El Messaoudi et al, 2016).…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Improvement of organic matter removal in water produced of oilfields using low cost Moringa peels as a new green environmental adsorbent

2020

Global NEST: The International Journal

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<p>The present study observed the removal of the organic content from the real effluent water produced by the oilfields. The proposed treatment process was the adsorption technique using the moringa peels as adsorbing agent. The effect of processing parameters such as adsorbent dosage, contact time and pH has been investigated using the batch adsorption method. The Langmuir isotherm provided a better fit for the adsorption equilibrium data than the Freundlich isotherm. It was observed that organic content adsorption was dependent on pH. The maximum removals of organic content were 65.4 % and 94.1% for moringa and activated moringa peels respectively at pH =3, 120 min, 1.5 gm dose. The outcome of this study exposes that activated moringa peels might be rummage-sale as a low-cost adsorbent for the removal of organic content from produced water.</p>

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“…The level of pH is one of the physicochemical factors that most influence the biosorption of heavy metals [25]. The pH values of 2-7 were presently employed because the precipitation of cobalt was observed experimentally as of pH 8, likely due to the formation of cobalt hydroxide [26,27].…”

Section: The Effect Of Phmentioning

confidence: 99%

“…The positive value of standard entropy (ΔS 0 ) reveals a high affinity of Co 2+ for PLEM [22], and thus, the probability that the metal promotes structural changes in the biosorbent. Hence, the process of biosorption likely increases the degree of disorder of the whole system [25,52]. According to the values of the thermodynamic parameters, adsorption of Co 2+ by PLEM is spontaneous and favorable, allowing this material to be utilized for the removal of metal from polluted water.…”

Section: Desorptionmentioning

confidence: 99%

Biosorption of Co2+ Ions from Aqueous Solution by K2HPO4-Pretreated Duckweed Lemna gibba

2020

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The wastewater of the many industries that use divalent cobalt (Co2+)-containing compounds has elevated levels of this metal. Thus, novel technology is needed to efficiently remove Co2+ ions from aqueous solutions. Biosorption is a low-cost technique capable of removing heavy metals from contaminated water. This study aims to evaluate the performance of KH2PO4-pretreated Lemna gibba (PLEM) as a biosorbent of Co2+ in aqueous solutions tested under different conditions of pH, particle size, and initial Co2+ concentration. Kinetic, equilibrium, and thermodynamic studies were conducted. The capacity of biosorption increased with a greater initial Co2+ concentration and was optimal at pH 7.0 and with small-sized biosorbent particles (0.3–0.8 mm). The pseudo-second-order sorption model best describes the experimental data on Co2+ biosorption kinetics. The Sips and Redlich-Peterson isotherm models best predict the biosorption capacity at equilibrium. According to the thermodynamic study, biosorption of Co2+ was endothermic and spontaneous. The effect of pH on the biosorption/desorption of Co2+ suggests that electrostatic attraction is the main biosorption mechanism. SEM-EDX verified the presence of Co2+ on the surface of the pretreated-saturated biosorbent and the absence of the metal after desorption.

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Biosorption of Cu2+, Co2+ and Ni2+ from aqueous solution by modified corn silk: Equilibrium, kinetics, and thermodynamic studies

Cited by 51 publications

References 39 publications

Kinetic and Isotherm Analysis of Cu(II) Adsorption onto Almond Shell (Prunus Dulcis)

Kinetic and Isotherm Analysis of Cu(II) Adsorption onto Almond Shell (Prunus Dulcis)

Improvement of organic matter removal in water produced of oilfields using low cost Moringa peels as a new green environmental adsorbent

Biosorption of Co2+ Ions from Aqueous Solution by K2HPO4-Pretreated Duckweed Lemna gibba

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