Adsorption of Methylene Blue from Aqueous Solution Using Steam-Activated Carbon Produced from &amp;lt;i&amp;gt;Lantana camara&amp;lt;/i&amp;gt; Stem

Amuda, Omotayo S.; Olayiwola, Akeem Olusegun; Alade, Abass Olanrewaju; Farombi, Abolaji Grace; Adebisi, Segun A.

doi:10.4236/jep.2014.513129

Cited by 55 publications

(32 citation statements)

References 36 publications

(35 reference statements)

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“…The increase was from 7 mg/g at 5 min to 30.55 mg/g at 30 min. This is in agreement with earlier reports (Amuda et al 2014;Mahmoud et al 2015) where the noticed action could be due to the available surface sites before equilibrium was reached.…”

Section: Effect Of Contact Timesupporting

confidence: 94%

“…The increase in the percentage removal with adsorbent dosage may be adduced to the increase in the nanoparticle's surface area available for adsorption. This is in consonance with earlier reports (Satapathy et al 2013;Amuda et al 2014;Inyinbor et al 2016a, b).…”

Section: Effect Of Adsorbent Dosagesupporting

confidence: 93%

“…The maximum monolayer adsorption (q max ) obtained from Langmuir plot is 59.85 mg/g and when compared with previously published reports in other studies (Table 2), it shows that AgNPs is a relatively better adsorbent in terms of performance than some previously used adsorbents (Majumdar et al 2015;Das et al 2006;Satapathy et al 2013;Amuda et al 2014;Inyinbor et al 2015Inyinbor et al , 2016aMahmoud et al 2015;Shen et al 2015). K f and n were calculated from Freundlich isotherm plot with the value of n (1.647) greater than 1 indicating a favourable adsorption of Rh-B on AgNPs and the chemical nature of adsorption (Foo and Hameed 2010;Amuda et al 2014).…”

Section: Effect Of Temperaturesupporting

confidence: 78%

“…K f and n were calculated from Freundlich isotherm plot with the value of n (1.647) greater than 1 indicating a favourable adsorption of Rh-B on AgNPs and the chemical nature of adsorption (Foo and Hameed 2010;Amuda et al 2014). …”

Section: Effect Of Temperaturementioning

confidence: 99%

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Novel biosynthesized silver nanoparticles from cobweb as adsorbent for Rhodamine B: equilibrium isotherm, kinetic and thermodynamic studies

et al. 2018

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This study has investigated the adsorption of Rhodamine B (Rh-B) dye on novel biosynthesized silver nanoparticles (AgNPs) from cobweb. The effects of contact time, initial pH, initial dye concentration, adsorbent dosage and temperature were studied on the removal of Rh-B and they significantly affected its uptake. Adsorption isotherms were evaluated using Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherm models. The adsorption process was best described by Langmuir isotherm with R 2 of 0.9901, indicating monolayer adsorption. The maximum adsorption capacity (q max ) of 59.85 mg/g showed that it has relatively high performance, while adsorption intensity showed a favourable adsorption process. Pseudo-secondorder kinetics fitted best the rate of adsorption and intra-particle diffusion revealed both surface adsorption and intra-particle diffusion-controlled adsorption process. Negative values of thermodynamic parameters (∆H°, ∆S° and ∆G°) indicated an exothermic and spontaneous adsorption process. The mean sorption energy (E) and activation energy (E a ) suggested the uptake of Rh-B onto AgNPs was chemical in nature (chemosorption).

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Section: Effect Of Contact Timesupporting

confidence: 94%

Section: Effect Of Adsorbent Dosagesupporting

confidence: 93%

Section: Effect Of Temperaturesupporting

confidence: 78%

Section: Effect Of Temperaturementioning

confidence: 99%

See 2 more Smart Citations

Novel biosynthesized silver nanoparticles from cobweb as adsorbent for Rhodamine B: equilibrium isotherm, kinetic and thermodynamic studies

et al. 2018

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“…The additional biosorbent just provided ineffective adsorption sites. The initial heavy metal ions concentration can influence the adsorption capacity of adsorbent through a combination of factors, namely, the availability of active adsorption sites on the adsorbent and the ability of adsorption sites to combine with ions (especially under the conditions of high ions concentration) [2,26,27]. This effect leads to the decline of adsorbent utilization efficiency, which could be supported by the research of Modhed et al [24] and Krishna et al [25].…”

Section: Effect Of the Biosorbent Concentrationmentioning

confidence: 92%

Composite of biomass and lead resistent Aspergillus oryzae for highly efficient aqueous phase Pb(II) adsorption

Feng

et al. 2017

Env Prog and Sustain Energy

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In this research, compound biosorbent peanut shell‐HA (PSH) and millet chaff‐HA (MCH), which were composited by peanut shell (PS) and millet chaff (MC) with lead resistent Aspergillus oryzae (HA), respectively, were used to remove Pb2+ from aqueous solution. The characterize of biosorbents were analyzed by FTIR and SEM. Batch experiments were performed to evaluate the effect of pH, biosorbent concentration, initial Pb2+ concentration and contact time on the Pb2+ removal. The results indicated that the functional groups and surface morphology of PSH and MCH were significantly different after compound procedures. The maximum adsorption capacity qm of PSH and MCH were 43.09% and 83.21% higher than PS and MC, respectively. Meanwhile, the compound biosorbent showed a significant adsorption advantage at the low pH and more efficient in adsorption compared to pristine materials. The adsorption isotherms and kinetics studies demonstrated that the adsorption process can be well fitted by the Langmuir and pseudo‐second‐order model, respectively. Fixed‐bed experiments showed that the MCH possesses stronger fixed bed adsorption capacity (qexp[MCH]=8.30 mg g−1,qexp[PSH]=7.13 mg g−1) and shorter height of mass transfer zone (H[MCH]=6.96 cm, H[PSH]=16.56 cm) than PSH. The compound biosorbents performs better than pristine materials with higher adsorption capacity. This study provides a promising strategy for manufacture of new biosorbent. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1658–1666, 2017

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High surface area benzimidazole based porous covalent organic framework for removal of methylene blue from aqueous solutions

Rahmanian

Falsafin

Dinari

2020

Polymer International

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In this study, a highly thermally stable benzimidazole based covalent organic framework (bCOF) was synthesized by the reaction of perlin‐tetracarboxylic anhydride, 5‐aminoisophthalic acid and diaminobenzidine in polyphosphoric acid medium. The synthesized porous bCOF was identified by different techniques. From CO2 adsorption, the micropore surface area of the bCOF was found to be 856 m2 g−1; this synthesized bCOF has a widespread netting construction, and it has various porosity. The TGA results displayed the high thermal strength of the synthesized bCOF. After characterization, the bCOF was used for the removal of methylene blue from aqueous solution, and the essential parameters such as pH of the solution, contact time and initial concentration were assessed. The maximum adsorption capacity of the bCOF for removal of methylene blue was 63.29 mg g−1 after only 40 min contact time at a pH of 6. Two kinetics and adsorption models were used for interpretation, and the outcomes showed that the pseudo‐second‐order and Langmuir models respectively were better fitted to the results. According to the results, the novel bCOF can be applied to remove methylene blue from aqueous solution. © 2020 Society of Chemical Industry

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Adsorption of Methylene Blue from Aqueous Solution Using Steam-Activated Carbon Produced from <i>Lantana camara</i> Stem

Cited by 55 publications

References 36 publications

Novel biosynthesized silver nanoparticles from cobweb as adsorbent for Rhodamine B: equilibrium isotherm, kinetic and thermodynamic studies

Novel biosynthesized silver nanoparticles from cobweb as adsorbent for Rhodamine B: equilibrium isotherm, kinetic and thermodynamic studies

Composite of biomass and lead resistent Aspergillus oryzae for highly efficient aqueous phase Pb(II) adsorption

High surface area benzimidazole based porous covalent organic framework for removal of methylene blue from aqueous solutions

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