Treatment of Cationic Dye Wastewater with Hybrid Sorbent Generated by Anionic Dye Wastewater Hybridization with Calcium Fluoride

2013 ◽  
Vol 652-654 ◽  
pp. 1571-1579
Author(s):  
Dan Hua Zhao ◽  
Xiu Lian Zhang ◽  
Wei Yin ◽  
Xiao Jun Liu
Keyword(s):  
Ionic Strength ◽  
Calcium Fluoride ◽  
Low Cost ◽  
Methyl Violet ◽  
Cationic Dyes ◽  
Maximum Adsorption Capacity ◽  
Cationic Dye ◽  
Dye Wastewater ◽  
Anionic Dye ◽  
Hybrid Sorbent

CaF2/AG25 (CFA) hybrid sorbent formed by hybrid reaction with activated calcium fluoride of low cost and anionic dye wastewater-Acid Green 25 (AG25) was used for the treatment of cationic dye wastewater. The adsorption of two cationic dyes methyl violet (MV) and Neutral Red (NR) from aqueous solutions was examined using a batch sorption technique. The effects of time, pH, ionic strength and temperature on the adsorption were also examined. It exhibited a faster adsorption to cationic dyes and hardly affected in pH over 3.5, ionic strength low 0.04 mol/L and temperature between 20 oC and 60 oC. The adsorption behavior of the NR and MV on CFA is in good agreement with the Langmiur isotherms model with the correlation coefficients of R 0.9948 for NR and 0.9992 for MV and the maximum adsorption capacity of NR (39.22 mg/g) and MV (48.78 mg/g). Finally, this sorbent was used in treatment of two practical cationic dye wastewaters with satisfactory results.

scholarly journals Super and Selective Adsorption of Cationic Dyes onto Carboxylate-Modified Passion Fruit Peel Biosorbent

2021 ◽  
Vol 9 ◽  
Author(s):  
Kaiwei Chen ◽  
Linlin Du ◽  
Peng Gao ◽  
Junli Zheng ◽  
Yuanli Liu ◽  
...  
Keyword(s):  
Adsorption Process ◽  
Selective Adsorption ◽  
Low Cost ◽  
Methyl Violet ◽  
Passion Fruit ◽  
Cationic Dyes ◽  
Polluted Water ◽  
Isotherm Models ◽  
Fruit Peel ◽  
Environmental Friendliness

The carboxylate-functionalized passion fruit peel (PFPCS) was an efficient and rapid biosorbent for wastewater treatment. The PFPCS exhibited excellent selectivity to the cationic dyes, where the maximum adsorption capacities for methylene blue (MB) and methyl violet (MV) were 1,775.76 mg g−1 and 3,756.33 mg g−1, respectively. And the adsorption process of MB and MV on PFPCS reached equilibrium within 20 min. Moreover, the adsorption conditions and mechanisms were investigated. The adsorption process was in good agreement with the pseudo-second-order and Langmuir isotherm models. The adsorption mechanism was also proposed to be electrostatic interaction and hydrogen bond. After six cycles of desorption-adsorption, the removal efficient of MB and MV could be kept above 95%. Thus, PFPCS was considered as a highly efficient absorbent for removing cationic dyes from polluted water due to excellent adsorption characteristics, low cost and environmental friendliness.

scholarly journals CuAl LDH/Rice Husk Biochar Composite for Enhanced Adsorptive Removal of Cationic Dye from Aqueous Solution

2020 ◽  
Vol 15 (2) ◽  
pp. 525-537 ◽  
Author(s):  
Neza Rahayu Palapa ◽  
Tarmizi Taher ◽  
Bakri Rio Rahayu ◽  
Risfidian Mohadi ◽  
Addy Rachmat ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Surface Area ◽  
Malachite Green ◽  
Rice Husk ◽  
Low Cost ◽  
Bet Surface Area ◽  
Maximum Adsorption Capacity ◽  
Cationic Dye ◽  
X Ray ◽  
Adsorptive Removal

The preparation of CuAl LDH and biochar (BC) composite derived from rice husk and its application as a low-cost adsorbent for enhanced adsorptive removal of malachite green has been studied. The composite was prepared by a one-step coprecipitation method and characterized by X-ray Diffraction (XRD), Fourier Transform Infra Red (FTIR), Brunauer-Emmett-Teller (BET), and Scanning Electron Microscopy - Energy Dispersive X-ray (SEM−EDX). The result indicated that CuAl LDH was successfully incorporated with the biochar that evidenced by the broadening of XRD peak at 2θ = 24° and the appearance of a new peak at 1095 cm−1 on the FTIR spectra. The BET surface area analysis revealed that CuAl/BC composite exhibited a larger surface area (200.9 m2/g) that the original CuAl LDH (46.2 m2/g). Surface morphological changes also confirmed by SEM image, which showed more aggregated particles. The result of the adsorption study indicated the composite material was efficient in removing malachite green with Langmuir maximum adsorption capacity of CuAl/BC reaching 470.96 mg/g, which is higher than the original CuAl LDH 59.523 mg/g. The thermodynamic analysis suggested that the adsorption of malachite green occurs spontaneously (ΔG < 0 at all tested temperature) and endothermic nature. Moreover, the CuAl/BC composite showed strong potential as a low-cost adsorbent for cationic dye removal since it showed not only a high adsorption capacity but also good reusability. Copyright © 2020 BCREC Group. All rights reserved

scholarly journals Magnetic nanocomposite based on polyacrylic acid and carboxylated cellulose nanocrystal for the removal of cationic dye

RSC Advances ◽  
2020 ◽  
Vol 10 (20) ◽  
pp. 11945-11956 ◽  
Author(s):  
Rajib Samadder ◽  
Nahida Akter ◽  
Abinash Chandra Roy ◽  
Md. Mosfeq Uddin ◽  
Md. Jahangir Hossen ◽  
...  
Keyword(s):  
Polyacrylic Acid ◽  
Cellulose Nanocrystals ◽  
Low Cost ◽  
Magnetic Nanocomposite ◽  
Cellulose Nanocrystal ◽  
Cationic Dyes ◽  
Cationic Dye ◽  
Highly Efficient

A low-cost, highly efficient, and recyclable magnetic nanocomposite has been developed from polyacrylic acid and carboxylated cellulose nanocrystals for the removal of cationic dyes from the wastewater.

scholarly journals Aquatic plant, Ipomoea aquatica, as a potential low-cost adsorbent for the effective removal of toxic methyl violet 2B dye

2020 ◽  
Vol 10 (12) ◽  
Author(s):  
Tze Ling Kua ◽  
Muhammad Raziq Rahimi Kooh ◽  
Muhammad Khairud Dahri ◽  
Nur Afiqah Hazirah Mohamad Zaidi ◽  
YieChen Lu ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Low Cost ◽  
Methyl Violet ◽  
Point Of Zero Charge ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Ipomoea Aquatica ◽  
Effective Removal ◽  
Methyl Violet 2B

AbstractIpomoea aquatica (IA) was investigated for its potential as a low-cost adsorbent to remove toxic methyl violet 2B (MV2B) dye in aqueous solutions. Optimising parameters such as the effects of contact time, medium pH and ionic strength (using NaCl, NaNO3, KCl and KNO3) were investigated. The results indicated that 150 min were sufficient for the adsorption to reach an equilibrium state and no adjustment of pH medium was necessary. Batch adsorption experiments such as adsorption isotherm, thermodynamics and kinetics were investigated and the experimental isotherm data were fitted to six isotherm models, namely Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, Redlich-Peterson and Sips, with the latter being the best-fit isotherm model showing maximum adsorption capacity (qmax) of 267.9 mg g−1. Thermodynamics studies indicated adsorption of MV2B to be exothermic in nature, occurring spontaneously. The kinetics was best described by the pseudo-second-order model. Regeneration of IA pointed to its reusability, maintaining high adsorption capacity even up until Cycle 5 when treated with acid (HCl) and base (NaOH). Functional groups such as hydroxyl and amine groups which could be involved in the adsorption of MV2B were determined using FTIR spectroscopy, and the point of zero charge of IA was found to be at pH 6.81.

Preparation and Application of CA/BaSO4 -CR Composite Gel Ball in Cationic Dye Wastewater Treatment

2014 ◽  
Vol 955-959 ◽  
pp. 38-46
Author(s):  
Da Mei Yu ◽  
Yun Lin ◽  
Yi Min Zhang ◽  
Wen Juan Zhou ◽  
Dan Hua Zhao ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Calcium Alginate ◽  
Cationic Dyes ◽  
Potential Candidate ◽  
Cationic Dye ◽  
Dye Wastewater ◽  
Adsorption Selectivity ◽  
Adsorption Performance ◽  
Treatment Processes ◽  
Composite Gel

A new hybrid adsorbent of calcium-alginate encapsulated BaSO4-CR (CABSC) has been prepared. The adsorption selectivity and mechanism were studied by investigating the adsorption performance of two anionic and two cationic dyes. The adsorption of two cationic dyes (EV and MB) from aqueous solutions was examined using a batch sorption technique. The effects of time, pH, temperature and ionic strength on the adsorption were examined. Besides, this material was applied in the treatment of two practical cationic dye wastewaters. Our study shows that the sorbent could be a potential candidate for utilization in dye wastewater treatment processes.

scholarly journals Biosorption of Cationic Dyes onto Cork Stopper Particles by Inverse Fluidized Bed

2019 ◽  
Vol 26 (4) ◽  
pp. 9-16
Author(s):  
Israa A. Al.Joboury ◽  
Shahlaa E. Ebrahime
Keyword(s):  
Methylene Blue ◽  
Fluidized Bed ◽  
Low Cost ◽  
Methyl Violet ◽  
Cationic Dyes ◽  
Cork Stopper ◽  
Continuous Mode ◽  
Biosorption Process ◽  
Simulated Wastewater ◽  
Inverse Fluidized Bed

In this study cork stopper particles was used as a low cost biosorbent to remove the cationic dyes (Methylene blue (MB), Malachite green (MG), and Methyl violet (MV)) from simulated wastewater. Continuous experiments were studied in a laboratory scale in inverse fluidized-bed packed with cork stopper particles for removal these dyes. A set of continuous mode experiments was carried out in inverse fluidized bed column to study the effect of flow rate (10, 15, 20 l/h), bed depth (5, 10, 15 cm), and influent concentration (10, 20, 30 mg/l) on the performance of biosorption process onto cork stopper particles. The minimum inverse fluidized velocity was calculated and it was found to be 8 ×10-5 m/s. The results indicate that cork adsorbs dyes efficiently and can be used as a low-cost alternative for the removal of cationic dyes in wastewater treatment.

scholarly journals Efficient Removal of Lead Ions from Water by a Low-Cost Alginate-Melamine Hybrid Sorbent

2018 ◽  
Vol 8 (9) ◽  
pp. 1518 ◽  
Author(s):  
Keteng Li ◽  
Genhua Wu ◽  
Min Wang ◽  
Xiaohong Zhou ◽  
Zhuqing Wang
Keyword(s):  
Adsorption Mechanism ◽  
Low Cost ◽  
Lead Ion ◽  
Maximum Adsorption Capacity ◽  
Mechanism Analysis ◽  
Efficient Removal ◽  
Exchange Effects ◽  
Acid Washing ◽  
Washing Process ◽  
Hybrid Sorbent

A low-cost alginate-melamine hybrid sorbent (named as Alg-Mel) was designed and synthesized for the removal of Pb2+ from water. The as-prepared Alg-Mel sorbent exhibited high affinity and selectivity to Pb2+. The selectivity coefficients of the Alg-Mel for Pb2+/Cd2+, Pb2+/Cu2+, Pb2+/Cr3+ and Pb2+/Co2+ were all over 7. It is found that the hybrid sorbent could uptake 95.4% of Pb2+ from Pb2+-containing solutions (0.48 mM), and the maximum adsorption capacity for Pb2+ reaches 1.39 mmol/g (287.7 mg/g), which is much higher than that of most reported lead ion-sorbents. Furthermore, the Alg-Mel can be regenerated by a simple acid-washing process and used repeatedly. The results of adsorption mechanism analysis reveal that the adsorption of Pb2+ by Alg-Mel is mainly ascribed to the chemical coordination and ion exchange effects.

Preparation of Highly Effective Hybrid Adsorbent by Anionic Dye Wastewater and Its Use in Cationic Dye Wastewater

2014 ◽  
Vol 140 (2) ◽  
pp. 04013001 ◽  
Author(s):  
Danhua Zhao ◽  
Xiaojun Liu ◽  
Zhaoxia Deng ◽  
Manli Cao ◽  
Xiulian Zhang ◽  
...  
Keyword(s):  
Cationic Dye ◽  
Dye Wastewater ◽  
Anionic Dye ◽  
Highly Effective

scholarly journals Uptake of Cationic Dyes from Aqueous Solution by Biosorption Using Granulized AnnonasqumosaSeed

2009 ◽  
Vol 6 (4) ◽  
pp. 1260-1266 ◽  
Author(s):  
T. Santhi ◽  
S. Manonmani
Keyword(s):  
Aqueous Solution ◽  
Low Cost ◽  
Cationic Dyes ◽  
Dye Wastewater ◽  
Experimental Conditions ◽  
Freundlich Model ◽  
First Order ◽  
Experimental Parameters ◽  
Initial Ph ◽  
Rate Kinetics

A new, low cost, locally available biomaterial was tested for its ability to remove cationic dyes from aqueous solution. A sample of granulizedAnnona squmosaseeds had been utilized as a sorbent for uptake of three cationic dyes, methylene blue (MB), methylene red (MR) and malachite green (MG). The effects of various experimental parameters (e.g., contact time, dye concentration, adsorbent dose and pH) were investigated and optimal experimental conditions were ascertained. Above the value of initial pH 5, three dyes studied could be removed effectively. The isothermal data fitted the Langmuir model in the case of MB sorption and the Freundlich model for all three dyes sorption. The biosorption processes followed the pseudo first order rate kinetics. The results in this study indicated that granulizedAnnona squmosaseed was an attractive candidate for removing cationic dyes from the dye wastewater.

scholarly journals Biosorption of Cationic Dyes onto Cork Stopper Particles

2019 ◽  
Vol 26 (3) ◽  
pp. 25-38
Author(s):  
Israa A. Al.Joboury ◽  
Shahlaa E. Ebrahime
Keyword(s):  
Experimental Data ◽  
Low Cost ◽  
Methyl Violet ◽  
Cationic Dyes ◽  
Isotherm Model ◽  
Cork Stopper ◽  
Langmuir Isotherm Model ◽  
Pseudo Second Order ◽  
Simulated Wastewater ◽  
Maximum Removal

In this study, cork stopper particles were used as a low cost biosorbent to remove the cationic dyes (Methylene blue (MB), Malachite green (MG), and Methyl violet (MV)) from simulated wastewater. Batch sorption experiments of components were conducted as a function of pH, sorbent dosages, contact time, agitation speed, and particle size to optimize the best conditions for maximum removal efficiencies of dyes. The experimental data fitted slightly best to the Langmuir isotherm model than to Freundlich and Temkin isotherm model. The experimental data proved that the adsorption kinetic of MB, MG, and MV could be described by a pseudo-second order model. The results indicate that cork adsorbs dyes efficiently and could be employed as a low-cost alternative in wastewater treatment for the removal of cationic dyes.

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