scholarly journals Removal of textile dye by adsortion on the cake as solid waste from the press-extraction of the macaúba (Acrocomia aculeata) kernel oil

2018 ◽  
Vol 43 (1) ◽  
pp. 48 ◽  
Author(s):  
Alice Santos Caldeira ◽  
José Domingos Fabris ◽  
David Lee Nelson ◽  
Sandra Matias Damasceno
Keyword(s):  
Good Alternative ◽  
Brilliant Blue ◽  
Blue Dye ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Textile Dye ◽  
Freundlich Isotherms ◽  
Kernel Oil ◽  
The Press ◽  
Acrocomia Aculeata

The textile industries face difficulties in removing dyes from the liquid effluent, even after what is thought to be conventional cleaning treatments. The use of adsorbents to retain dyes in textile effluents has been showing to be a simple and promisingly efficient method. The objective of this research was to test the macaúba (Acrocomia aculeata) kernel cake as adsorbent to remove Remazol Brilliant Blue dye in batch adsorption tests. The obtained adsorption kinetic data at equilibrium were modeled by assuming both the Langmuir and the Freundlich isotherms. The values were better fitted with the Langmuir model (R2 = 0.983), with a maximum adsorption capacity of 3.5 mg g-1 monolayer. This essay showed that the macaúba cake is an effective adsorbent to remove Remazol Brilliant Blue textile dye and it is a good alternative for treatment of textile liquid effluents.

scholarly journals Phosphorus and nitrogen co-doped carbon derived from Cigarette Filter for adsorption of methylene blue dye from aqueous solution

2021 ◽  
Author(s):  
Samantha Macchi ◽  
Zane Alsebai ◽  
Fumiya Watanabe ◽  
Arooba Ilyas ◽  
Shiraz Atif ◽  
...  
Keyword(s):  
Water Pollution ◽  
Methylene Blue ◽  
Adsorption Capacity ◽  
Blue Dye ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Textile Dye ◽  
Adsorption Parameters ◽  
Cigarette Filter ◽  
Co Doped

Abstract Global access to sanitary water is of utmost importance to human health. Presently, textile dye water pollution and cigarette pollution are both plaguing the environment. Herein, waste cigarette filters are converted into useful carbon-based adsorbent materials via a facile, microwave-assisted carbonization procedure. The cigarette filters are co-doped with phosphorus and nitrogen using ammonium polyphosphate to enhance their surface characteristics and adsorbent capability. The adsorbents are characterized physically to examine their surface area, elemental composition, and surface charge properties. Batch adsorption experiments were performed to determine the maximum adsorption capacity of the adsorbents. Additionally, the effects of various adsorption parameters— temperature, adsorbent dosage, pH, and time—on adsorption process were examined. The doped adsorbent showed a maximum adsorption capacity of 303.3 mg g− 1 respectively, which is three times that of the methylene blue adsorption capacity of commercially available activated carbon (~ 100 mg g− 1). Thus, the phosphorus and nitrogen co-doped carbonized waste cigarette filter adsorbent shows a profound potential as a sustainable solution to combat textile dye water pollution and cigarette filter pollution simultaneously, due to its low cost, simple preparation, and versatility in application.

scholarly journals Influence of phosphorus and nitrogen co-doping of activated carbon from littered cigarette filters for adsorption of methylene blue dye from wastewater

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Samantha Macchi ◽  
Zane Alsebai ◽  
Fumiya Watanabe ◽  
Arooba Ilyas ◽  
Shiraz Atif ◽  
...  
Keyword(s):  
Water Pollution ◽  
Adsorption Capacity ◽  
Adsorption Process ◽  
Surface Characteristics ◽  
Point Of Zero Charge ◽  
Blue Dye ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Textile Dye ◽  
Co Doping

AbstractGlobal access to sanitary water is of utmost importance to human health. Presently, textile dye water pollution and cigarette pollution are both plaguing the environment. Herein, waste cigarette filters (CFs) are converted into useful carbon-based adsorbent materials via a facile, microwave-assisted carbonization procedure. The CFs are activated and co-doped with phosphorus and nitrogen simultaneously to enhance their surface characteristics and adsorbent capability by introducing chemisorptive binding sites to the surface. The doped carbonized CF (DCCF) and undoped carbonized CF (CCF) adsorbents are characterized physically to examine their surface area, elemental composition, and surface charge properties. The maximum adsorption capacity of synthesized adsorbents was determined via batch adsorption experiments and Langmuir modelling. Additionally, the influence of different parameters on the adsorption process was studied by varying the adsorption conditions such as adsorbent dosage, initial concentration, contact time, temperature, and pH. The DCCF adsorbent showed a maximum adsorption capacity of 303 mg g− 1. Adsorption of both adsorbents fit best to Langmuir model and pseudo-second order kinetics, indicating chemisorptive mechanism. Both adsorbents showed endothermic adsorption process which is indicated by increasing adsorption capacity with increased temperatures. DCCF exhibited greater adsorption capability than CCF at all temperatures from 25 to 55 °C. The pH of the solution significantly affected the adsorption capacity of CCF while DCCF adsorption is favorable at a wide pH range due to low value of the adsorbent’s point of zero charge. Reusability results showed that both adsorbents can be used over several cycles for removal of dye. Thus, results conclude that the waste DCCF-based adsorbent does not only show a profound potential as a sustainable solution to combat textile dye water pollution but also addresses the valuable use of the CF pollution simultaneously. This approach, which can target two major pollutants, is attractive due to its ease of preparation, negligible cost, and versatility in application.

scholarly journals Prepared 13X Zeolite as a Promising Adsorbent for the Removal of Brilliant Blue Dye from Wastewater

2021 ◽  
Vol 22 (2) ◽  
pp. 1-6
Author(s):  
Suondos K. A. Barno ◽  
Haider J. Mohamed ◽  
Siham M. Saeed ◽  
Mohammed J. Al-Ani ◽  
Ammar S. Abbas
Keyword(s):  
Raw Materials ◽  
Brilliant Blue ◽  
Blue Dye ◽  
Maximum Adsorption Capacity ◽  
X Ray Diffraction ◽  
13X Zeolite ◽  
Equilibrium Data ◽  
Pseudo Second Order ◽  
Zeolite Adsorbent ◽  
Adsorption Equilibrium Data

The research discussed the possibility of adsorption of Brilliant Blue Dye (BBD) from wastewater using 13X zeolite adsorbent, which is considered a byproduct of the production process of potassium carbonate from Iraqi potash raw materials. The 13X zeolite adsorbent was prepared and characterized by X-ray diffraction that showed a clear match with the standard 13X zeolite. The crystallinity rate was 82.15% and the crystal zeolite size was 5.29 nm. The surface area and pore volume of the obtained 13X zeolite were estimated. The prepared 13X zeolite showed the ability to remove BBD contaminant from wastewater at concentrations 5 to 50 ppm and the removal reached 96.60% at the lower pollutant concentration. Adsorption measurements versus time showed 48.18% removal of the dye during just the first half-hour and the maximum removal closest to the removal at the equilibrium after one and half hour. Langmuir isotherm was described the adsorption equilibrium data with a maximum adsorption capacity of 93.46 mg/g and the kinetics data of the adsorption process was followed the pseudo-second-order.

Application of Chitosan Film for the Removal of Triclosan from Aqueous Solutions by Adsorption

2016 ◽  
Vol 675-676 ◽  
pp. 455-458
Author(s):  
Peeyanan Noirod ◽  
Jittapat Lamangthong ◽  
Padarat Ninjiaranai
Keyword(s):  
Aqueous Solutions ◽  
Contact Time ◽  
Chitosan Film ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Acidic Ph ◽  
Adsorption Efficiency ◽  
Freundlich Isotherms ◽  
Langmuir And Freundlich Isotherms ◽  
Equilibrium Data

The aim of this work was to study the adsorption efficiency of chitosan as an adsorbent for triclosan, commercially known as Irgasan, in aqueous solutions. The effects of contact time, pH and temperature were investigated using a batch adsorption technique. Langmuir and Freundlich isotherms were used to analyze the equilibrium data at different absorption conditions. The results showed that the maximum adsorption capacity for chitosan was found in the acidic pH 3 and at a temperature of 65 oC. These results suggested that chitosan can be used as an adsorbent for removal of triclosan from aqueous solutions.

Improved Study on the Performance of Polyacrylamide/Attapulgite Clay Composite Material Removing Copper (II) Ions from Aqueous Solution

2014 ◽  
Vol 609-610 ◽  
pp. 26-31
Author(s):  
Chun Lei Li ◽  
Hui Xu ◽  
Jun Long Zhang ◽  
Wei Wang ◽  
Jing Tang ◽  
...  
Keyword(s):  
Metal Ion ◽  
Ion Concentration ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Freundlich Isotherms ◽  
Thermodynamics And Kinetics ◽  
Equilibrium Data ◽  
Ft Ir ◽  
Adsorption Desorption ◽  
Ft Ir Spectroscopy

A removal of Cu (II) ions from aqueous solutions onto PAM/ATP has been investigated using batch adsorption technique, including the effect of pH, contact time, initial metal ion concentration, adsorption thermodynamics and kinetics. PAM/ATP was characterized with Fourier transform infrared (FT-IR) spectroscopy and scanning electron microscopy (SEM). The equilibrium data were analyzed using Langmuir and Freundlich isotherms and the best interpretation was given by Langmuir. The maximum adsorption capacity was found to be 212 mg/g after 60 min when pH =3. Regeneration experiments showed that the investigated PAM/ATP could be reused without significant adsorption losses even after five adsorption-desorption cycles.

scholarly journals Removal of Methylene Blue Dye From Aqueous Solution Using PDADMAC Modified ZSM-5 Zeolite as a Novel Adsorbent 

2021 ◽  
Author(s):  
Sabarish Radoor ◽  
Jasila Karayil ◽  
Aswathy Jayakumar ◽  
Jyotishkumar Parameswaranpillai ◽  
Suchart Siengchin
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Contact Time ◽  
Adsorption Process ◽  
Nitrogen Adsorption ◽  
Second Order ◽  
Blue Dye ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Pseudo Second Order

Abstract In the present work, we modified ZSM-5 zeolite using a bio polymer poly (diallyl dimethyl ammonium chloride) and employed it for the removal of cationic dye, methylene blue from aqueous solution. The chemical and physical properties of the modified ZSM-5 zeolite were investigated using XRD, FTIR, SEM, TEM, nitrogen adsorption, TGA and 27Al NMR. Modified ZSM-5 zeolite possesses high surface area and pore diameter which was confirmed from SEM, TEM and nitrogen adsorption analysis. Adsorption of methylene blue on zeolite was investigated by batch adsorption technique. The effect of different parameters such as zeolite dosage, initial methylene blue concentration, temperature, pH and contact time on the adsorption process was discussed. Maximum adsorption capacity (4.31 mg/g) was achieved using 0.1g of modified ZSM-5 zeolite at the optimum conditions (initial dye concentration: 10 mg/L, pH: 10, temperature:30oC and contact time: 300 min). The experimental data were fitted into Langmuir and Freundlich models and the results indicate that the adsorption process followed Freundlich isotherm. Kinetic data were investigated using pseudo-first-order and pseudo-second-order models. Kinetic analysis indicates that pseudo-second-order model is more suitable to describe adsorption of MB on modified ZSM-5 zeolite. The reusability test suggests that the adsorbent could be reused at least six times without significant loss in removal efficiency.

scholarly journals Porous Activated Carbon from Lignocellulosic Agricultural Waste for the Removal of Acetampirid Pesticide from Aqueous Solutions

Molecules ◽  
2020 ◽  
Vol 25 (10) ◽  
pp. 2339 ◽  
Author(s):  
Somaia G. Mohammad ◽  
Sahar M. Ahmed ◽  
Abd El-Galil E. Amr ◽  
Ayman H. Kamel
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Adsorption Process ◽  
Low Cost ◽  
Agricultural Waste ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Equilibration Time ◽  
Freundlich Isotherms ◽  
Before And After

A facile eco-friendly approach for acetampirid pesticide removal is presented. The method is based on the use of micro- and mesoporous activated carbon (TPAC) as a natural adsorbent. TPAC was synthesized via chemical treatment of tangerine peels with phosphoric acid. The prepared activated carbon was characterized before and after the adsorption process using Fourier- transform infrared (FTIR), X-ray diffraction (XRD), particle size and surface area. The effects of various parameters on the adsorption of acetampirid including adsorbent dose (0.02–0.2 g), pH 2–8, initial adsorbate concentration (10–100 mg/L), contact time (10–300 min) and temperature (25–50 °C) were studied. Batch adsorption features were evaluated using Langmuir and Freundlich isotherms. The adsorption process followed the Langmuir isotherm model with a maximum adsorption capacity of 35.7 mg/g and an equilibration time within 240 min. The adsorption kinetics of acetamiprid was fitted to the pseudo-second-order kinetics model. From the thermodynamics perspective, the adsorption was found to be exothermic and spontaneous in nature. TPAC was successfully regenerated and reused for three consecutive cycles. The results of the presented study show that TPAC may be used as an effective eco-friendly, low cost and highly efficient adsorbent for the removal of acetamiprid pesticides from aqueous solutions.

scholarly journals Adsorption study with NaOH chemically treated soybean hull for textile dye removal

2019 ◽  
Vol 10 (5) ◽  
pp. 161-168
Author(s):  
Cesar Vinicius Toniciolli Rigueto ◽  
Fabi Cristina Assunção Fonseca ◽  
Bárbara Belem Zanella ◽  
Marieli Rosseto ◽  
Jeferson Steffanello Piccin ◽  
...  
Keyword(s):  
Experimental Data ◽  
Textile Industry ◽  
Animal Feed ◽  
Adsorptive Capacity ◽  
Blue Dye ◽  
Maximum Adsorption Capacity ◽  
Textile Dye ◽  
Soybean Hull ◽  
Chemically Treated ◽  
Naoh Treatment

The activities of the textile industry generate effluents containing high chemical load, due to the presence of toxic dyes, causing water contamination. Adsorption is a promising technique for the removal of effluent dyes, however, studies are needed to look for alternative adsorbent materials, aiming at low cost and removal efficiency. The soybean hull (Glycine max) is an agroindustrial residue widely generated in Brazil, but its application is only for animal feed. The objective of this work was to evaluate the adsorption potential of chemically treated soybean hull with sodium hydroxide (NaOH) in the removal of 5G reactive blue dye. The biosorbent was subjected to NaOH treatment at different concentrations (0.01, 0.1 and 0.5 mol L-1), influence of temperature (30, 40 and 50 ºC), rotation speed (30, 60 and 90 rpm) and pH (1 to 11) was verified. The kinetics and equilibrium isotherms were performed using the best conditions obtained in the preliminary tests, and the experimental data adjusted to the theoretical models previously described in the literature. The studied variables indicated that the highest removal (about 88%) occurred under the conditions of 0.01 mol L-1 NaOH concentration, 50 ºC, 90 rpm and pH 2. In the kinetics, it was observed that the equilibrium was achieved in about 240 min, with the best fit of the pseudo-second order model. In isotherms, the Langmuir model better predicts experimental data, predicting a maximum adsorption capacity of 16.46 mg g-1. The soybean hull was effective in removing dyes in aqueous solution, however, NaOH treatment showed no relevant improvement in adsorptive capacity.

scholarly journals Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from Wastewater

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 63
Author(s):  
Maria Harja ◽  
Gabriela Buema ◽  
Nicoleta Lupu ◽  
Horia Chiriac ◽  
Dumitru Daniel Herea ◽  
...  
Keyword(s):  
Fly Ash ◽  
Adsorption Capacity ◽  
Copper Ions ◽  
Synthetic Wastewater ◽  
Bet Surface Area ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Copper Adsorption ◽  
X Ray

Fly ash/magnetite material was used for the adsorption of copper ions from synthetic wastewater. The obtained material was characterized by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) surface area, and vibrating sample magnetometer (VSM). Batch adsorption experiments were employed in order to investigate the effects of adsorbent dose, initial Cu (II) concentration and contact time over adsorption efficiency. The experimental isotherms were modeled using Langmuir (four types of its linearization), Freundlich, Temkin, and Harkins–Jura isotherm models. The fits of the results are estimated according to the Langmuir isotherm, with a maximum adsorption capacity of 17.39 mg/g. The pseudo-second-order model was able to describe kinetic results. The data obtained throughout the study prove that this novel material represents a potential low-cost adsorbent for copper adsorption with improved adsorption capacity and magnetic separation capability compared with raw fly ash.

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