Adsorption of dyes on activated carbon prepared from apricot stones and commercial activated carbon

Djilani, Chahrazed; Zaghdoudi, Rachida; Djazi, Fayçal; Bouchekima, Bachir; Lallam, Abdelaziz; Modarressi, Ali; Rogalski, Marek

doi:10.1016/j.jtice.2015.02.025

Cited by 277 publications

(92 citation statements)

References 52 publications

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“…18 AC adsorption is very effective in removing complex organic compounds from LL, resulting in increased biodegradability and reduced toxicity after treatment. 19 Due to its abundance and availability, agricultural wastesuch as pine nut shell, 20 coconut shell 21 and apricot stone 22 is being used extensively as a low-cost precursor in the preparation of AC. Other interesting materials that can be useful for producing AC are wastes from the fisheries industry, such as fish scales due to their collagen content surrounded by hydroxyapatite and calcium compounds that have adsorptive properties.…”

Section: Introductionmentioning

confidence: 99%

Use of fish scales as an adsorbent of organic matter present in the treatment of landfill leachate

Poblete

Cortés

Bakit

et al. 2020

J of Chemical Tech & Biotech

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This study focuses on the removal of organic pollutants present in landfill leachate (LL) using an adsorption process with activated carbon (AC) obtained from fish scales, and subsequently evaluates the reduction of toxicity in the wastewater obtained from the process. The AC obtained is a mesoporous material, with a cumulative pore area of 1.57 m2 g−1, Brunauer–Emmett–Teller (BET) of 1.8329 m2 g−1 and adsorption average pore width of 12.79833 nm. The maximum removal of pollutants was achieved at natural pH (6.71) of the LL, with a load of 3 g L−1, resulting in 60.1% colour and 37.3% chemical oxygen demand (COD). The rate of COD removal per g of AC increase had a maximum value of 5.6 at pH 10 when passing from 0.5 to 1 g AC. The lowest rate of 0.6 occurred for the same pH when it passed from 1 to 2 g AC. At pH 3 the second lowest rate of 3.3 was observed when passing from 2 to 3 g AC. At pH 3 there was always an increase in the rate as more AC was added. Conversely, at natural pH 6.71 the rate tended to decrease. At pH 10 the rate first decreased and then increased. At acidic pH, because it is the one with the lowest COD removal, it would be expected that by adding more AC the rate would continue to increase as there are easily accessible sites still available. Langmuir isotherms fitted adequately with the experimental data, providing an R2 of 0.9657, which is consistent with a monolayer adsorption pattern. The LL before the adsorption process had an inhibition ratio of 20.4%, due to the fact that leachate can be toxic because of the presence of hazardous organic compounds. After adsorption processes at pH 6.71, the inhibition ratios were 16.9%, 13.8%, 12.2% and 10.9% at AC loads of 0.5, 1, 2 and 3 g L−1, respectively, due to decreasing COD and colour of the LL over the course of the treatment. It was observed that the reduction of the inhibition ratio was greater at higher loads of adsorbent. © 2020 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Use of fish scales as an adsorbent of organic matter present in the treatment of landfill leachate

Poblete

Cortés

Bakit

et al. 2020

J of Chemical Tech & Biotech

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“…From literature data, it can be assert that at lower agitation speed, the fluid film around the particle is thicker and the film diffusion seems to be rate limiting step [29].…”

Section: Effect Of Stirring Ratementioning

confidence: 99%

Malachite green dye adsorption from model aqueous solutions using corn cob activated carbon (ccac)

Burcă¹,

Indolean²,

Măicăneanu³

2017

Studia UBB Chemia

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ABSTRACT. This paper presents a report on kinetics of malachite green (MG) dye removal from model aqueous solutions using a biomaterial formed by corn cob activated carbon (CCAC). The sorbent was characterized using specific surface area and pore size distribution (Brunauer-Emmett-Teller, BET) analysis. The BET analysis confirmed the macro-porosity of the adsorbent. Effects of initial concentration of MG dye and CCAC quantity, particle size and stirring rate on adsorption capacities and efficiency were monitored through pseudo first-and second-order models, intra-particle and film diffusion models to present adsorption rate parameters. The removal efficiency of MG increased with the adsorbent quantity and particle size.

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“…The fact that the Langmuir isotherm adequately fits the experimental data confirms the homogeneous distribution of the adsorbent. This results is explained by the fact that following adsorption of first layer of charged dyes on adsorbent and formation of semi-capacitor, hinder form more layer adsorption via repulsive force among layer [43] The effect of isotherm shape has been discussed with a view to predict whether an adsorption system is favorable or unfavorable which in Langmuir isotherm represent by R L value to separation factor or equilibrium parameter. [44] The i.e., whether the process is unfavorable (R L > 1), or linear (R L = 1), or favorable (0 < R L < 1), or irreversible (R L = 0) and as results show R L values were in the range of 0 < R L < 1 (Table 4) which support high efficiency of this model for [48] Activated Carbon (walnut shells) MB 315.0 1440 [49] CuO-Nanoparticles Loaded on Activated Carbon MB 10.55 15 [50] PDA microspheres MB 90.70 100 [51] MWCNTs filled with Fe 2 O 3 particles MB 42.90 60 [52] Ag-Nanoparticles Loaded on Activated Carbon MB 71.43 15 [21] Humic Acid-coated Fe 3 O 4 -NP (HA-Fe 3 O 4 ) MB 93.08 27 [53] Activated Carbon of Thespesia Populnea Pods OG 9.120 180 [54] Bagasse Fly Ash OG 18.79 240 [10] explanation of data in single (MB and OG) and binary system (MB-OG) on the SnO 2 /(NH 4 ) 2 -SnCl 6 -NCs-AC.…”

Section: Adsorption Isotherm Modelingmentioning

confidence: 99%

Synthesis and characterization of SnO₂/(NH₄)₂‐SnCl₆ nanocomposites loaded on activated carbon and its application for adsorption of methylene Blue and Orange G

Jalali

Rahimi

Ghaedi

et al. 2017

Applied Organom Chemis

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The present study deals with the synthesis and characterization (FE-SEM, particle size distribution, XRD and point of zero charge) SnO 2 /(NH 4 ) 2 -SnCl 6 nanocomposites loaded on activated carbon (SnO 2 /(NH 4 ) 2 -SnCl 6 -NCs-AC) and its subsequent application for the simultaneous removal of Methylene Blue (MB) and Orange G (OG) from aqueous solution. Response surface methodology (RSM) based on central composite design (CCD) give trend of influencing responses with respect to five parameters such as contact time (X 1 ), OG concentration (X 2 ), MB concentration (X 3 ), adsorbent mass (X 4 ) and pH (X 5 ). In later stage following recognition of significant variables and interaction, quadratic model generated which are able to predict the dyes removal in different conditions. Justification and selection of significant terms was conducted based on analysis of variance and Fisher's F-test Optimal value of contact time, OG concentration, MB concentration, adsorbent mass and pH were set at 4.0 min, 10 mg l −1 , 20 mg L −1 , 0.015 g and 6.0, respectively, which lead to achievement of best experiment removal percentage of 97.0 and 99.5% OG and MB respectively, from their binary solutions. The whole experimental data follow pseudo-first-order and pseudo-second-order rate equations. The fitting experimental data to more available conventional model like Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherm models revel more ability of Langmuir model (with R 2 > 0.997) for explanation of system in equilibrium. The adsorption efficiency remained high even after the five cycle of reuse (99.76% and 95.56% for MB and OG, respectively).KEYWORDS adsorption isotherm and kinetic, experimental design, methylene blue, orange G, SnO 2 /(NH 4 ) 2 -SnCl 6 -NCs-AC, ultrasound

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Adsorption of dyes on activated carbon prepared from apricot stones and commercial activated carbon

Cited by 277 publications

References 52 publications

Use of fish scales as an adsorbent of organic matter present in the treatment of landfill leachate

Use of fish scales as an adsorbent of organic matter present in the treatment of landfill leachate

Malachite green dye adsorption from model aqueous solutions using corn cob activated carbon (ccac)

Synthesis and characterization of SnO₂/(NH₄)₂‐SnCl₆ nanocomposites loaded on activated carbon and its application for adsorption of methylene Blue and Orange G

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Adsorption of dyes on activated carbon prepared from apricot stones and commercial activated carbon

Cited by 277 publications

References 52 publications

Use of fish scales as an adsorbent of organic matter present in the treatment of landfill leachate

Use of fish scales as an adsorbent of organic matter present in the treatment of landfill leachate

Malachite green dye adsorption from model aqueous solutions using corn cob activated carbon (ccac)

Synthesis and characterization of SnO2/(NH4)2‐SnCl6 nanocomposites loaded on activated carbon and its application for adsorption of methylene Blue and Orange G

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Product

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About

Synthesis and characterization of SnO₂/(NH₄)₂‐SnCl₆ nanocomposites loaded on activated carbon and its application for adsorption of methylene Blue and Orange G