The preparation of novel adsorbent materials with efficient adsorption performance for both chromium and methylene blue

Li, Leilei; Liu, Feng; Duan, Huimin; Wang, Xiaojiao; Li, Jianbo; Wang, Yanhui; Luo, Chuannan

doi:10.1016/j.colsurfb.2015.06.023

Cited by 60 publications

(7 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, the calculated equilibrium uptake of Procion Blue onto AS-Sorbents (q e ) of the pseudo-second-order model is closer to the data attained from the experimental results with slightly lower values that signify the process is more complicated than the model described. Further, comparing the kinetic constants of the suggested model, K 2 , with those in the literature for similar adsorption systems indicates a reasonable comparable (El-Mekkawi et al 2016;Li et al 2016;Poormand et al 2017).…”

Section: Kinetics Of Dye Adsorption Characteristicssupporting

confidence: 53%

Zeolite-based adsorbent from alum sludge residue for textile wastewater treatment

Tony

2020

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

Highly efficient low-cost alum sludge-based sorbents, (termed as AS-Sorbents), derived from alum sludge by-product waste have shown a significant potential for treating wastewaters contaminated by textile dyes. Their application for wastewater treatment can be termed as industrial ecology approach. X-ray diffraction and scanning electron microscope were used to investigate the structural and morphological properties of these sorbents (AS, AS400, AS600, AS800). The results revealed the presence of the highly efficient adsorbent, zeolite in AS400. The experimental data revealed that AS-Sorbents exhibited a reasonable textile dye removal from real jeans dying effluent. The highest removal rate was corresponding to AS400 due to the presence of graphite and zeolite. Compared to the commercially available silica gel (Sgel) and activated carbon (Norit), AS-Sorbents are exhibited a superior removal rate of Procion Blue dye from textile effluent. The adsorption efficiency is in the order of AS400 ≫ AS > AS600 > AS800 > Norit > Sgel. The adsorption matrix was well fitted by Langmuir isotherm and followed second-order kinetic model; the maximum monolayer adsorption capacity was 6.5 mg/g. Thermodynamic parameters show that the process follows the physical adsorption matrix with a spontaneous and exothermic nature.

show abstract

Section: Kinetics Of Dye Adsorption Characteristicssupporting

confidence: 53%

Zeolite-based adsorbent from alum sludge residue for textile wastewater treatment

Tony

2020

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…The endothermic nature of adsorption can be attributed to increase in the mobility of the heavy metal ions and increase in the rate of diffusion of the adsorbate molecules across the external boundary layer and in the internal pores of the adsorbent particle, because of the decrease in the viscosity of the solution. Otherwise, negative ΔG° values show the feasibility and spontaneity of the adsorption process, and the positive ΔS° values show that affinity of metal ions is sufficient to stick on the carbon surface and randomness at the interface of AC-metal solution interphase increased during this process (Li et al 2016;Enniya et al 2018).…”

Section: Adsorption Thermodynamicsmentioning

confidence: 99%

Chemically activated carbon production from agricultural waste of chickpea and its application for heavy metal adsorption: equilibrium, kinetic, and thermodynamic studies

et al. 2019

View full text Add to dashboard Cite

The purpose of this study was to produce activated carbons (ACs) from chickpea (Cicer arietinum) husks by chemical activation (KOH and K 2 CO 3) and to examine their feasibility in removing heavy metals from aqueous solutions. In the case of KOH impregnation with a ratio of 50 wt%, the most developed porosity was achieved, with a BET surface area of 2082 m 2 /g and a total pore volume of 1.07 cm 3 /g. By using the product, the maximum adsorption capacities were found to be 135.8, 59.6, and 56.2 mg/g for Pb(II), Cr(VI), and Cu(II), respectively. The experimental data were analyzed by various adsorption isotherm and kinetic models. Thermodynamic parameters such as ΔG°, ΔH°, and ΔS° were also calculated. The results obtained in this study shows that adsorption onto chickpea-husk-derived activated carbon was endothermic and spontaneous for the removal of heavy metals from aqueous solutions.

show abstract

“…Higher negative value of Δ G 0 at elevated temperature indicated better performance of the adsorbents. The value of Δ S 0 was found to be positive indicating an affinity of metal ion is sufficient to stick on the carbon surface, and increased randomness at the solid–liquid interface along with some structural changes in the adsorbate and the adsorbent (Enniya, Rghioui, & Jourani, 2018; Li et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Development of copper—iron bimetallic nanoparticle impregnated activated carbon derived from coconut husk and its efficacy as a novel adsorbent toward the removal of chromium (VI) from aqueous solution

Rahaman

Das

Bose

2021

Water Environment Research

View full text Add to dashboard Cite

The present work demonstrates the preparation of biodegradable coconut husk derived activated carbon (CAC) impregnated with bimetallic nanoparticles consisting of zerovalent iron and copper to produce a new adsorbent (Fe0/Cu‐CAC). The new adsorbent was further employed to determine the removal efficiency of Chromium (VI) from aqueous solutions. Chromium (VI) adsorption process by Fe0/Cu‐CAC was found to be favorable at pH ~ 3, attaining 95.28% removal efficiency while its counterpart CAC attained only ~41%. Negative ΔG0 value suggests that the process was thermodynamically spontaneous and ΔH0 was observed to be 8.496 kJ/mol, further corroborating the endothermic nature of the process. Pseudo‐second order model was best suited to explain the kinetics of the process with R2 value of 0.99683 and an error of 6.73%. Equilibrium parameter (RL) derived from Langmuir isotherm was calculated to be 0.1103, indicating favorable adsorption and thus Langmuir isotherm can be used to describe the process of adsorption of Cr (VI) by Fe0/Cu‐CAC. Finally, a maximum monolayer adsorption capacity of 173.9 mg/g indicated the suitability of the prepared adsorbent in treating chromium contaminated wastewater streams. Practitioner points Facile development of novel adsorbent from biodegradable coconut husk via cost effective route. Utilization of the adsorbent towards removal of toxic pollutant like Cr (VI) from its aqueous solution. Validation of the effective adsorption mechanism by Kinetic and Thermodynamic study.

show abstract

The preparation of novel adsorbent materials with efficient adsorption performance for both chromium and methylene blue

Cited by 60 publications

References 35 publications

Zeolite-based adsorbent from alum sludge residue for textile wastewater treatment

Zeolite-based adsorbent from alum sludge residue for textile wastewater treatment

Chemically activated carbon production from agricultural waste of chickpea and its application for heavy metal adsorption: equilibrium, kinetic, and thermodynamic studies

Development of copper—iron bimetallic nanoparticle impregnated activated carbon derived from coconut husk and its efficacy as a novel adsorbent toward the removal of chromium (VI) from aqueous solution

Contact Info

Product

Resources

About