Application of Aqai Stalks As Biosorbents for the Removal of the Dyes Reactive Black 5 and Reactive Orange 16 from Aqueous Solution

2011 ◽  
Vol 56 (5) ◽  
pp. 1857-1868 ◽  
Author(s):  
Natali F. Cardoso ◽  
Eder C. Lima ◽  
Tatiana Calvete ◽  
Isis S. Pinto ◽  
Camila V. Amavisca ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Reactive Black 5 ◽  
Reactive Orange 16 ◽  
Reactive Orange

scholarly journals Removal of Reactive Orange 16 Dye from Aqueous Solution by Using Modified Kenaf Core Fiber

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Maytham Kadhim Obaid ◽  
Luqman Chuah Abdullah ◽  
Intidhar Jabir Idan
Keyword(s):  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Correlation Coefficients ◽  
Maximum Adsorption Capacity ◽  
Trimethylammonium Chloride ◽  
Order Kinetic ◽  
Kenaf Core ◽  
Reactive Orange 16 ◽  
Core Fiber ◽  
Reactive Orange

Evaluated removal of reactive orange 16 (RO16) dye from aqueous solution was studied in batch mode by using kenaf core fiber as low-cost adsorbents. In this attempt, kenaf core fiber with size 0.25–1 mm was treated by using (3-chloro-2-hydroxypropyl) trimethylammonium chloride (CHMAC) as quaternization agent. Then effective parameters include adsorbent dose, pH, and contact time and initial dye concentration on adsorption by modified kenaf core fiber was investigated. In addition, isotherms and kinetics adsorption studies were estimated for determination of the equilibrium adsorption capacity and reactions dynamics, respectively. Results showed that the best dose of MKCF was 0.1 g/100 mL, the maximum removal of RO16 was 97.25 at 30°C, pH = 6.5, and agitation speed was 150 rpm. The results also showed that the equilibrium data were represented by Freundlich isotherm with correlation coefficientsR2=0.9924, and the kinetic study followed the pseudo-second-order kinetic model with correlation coefficientsR2=0.9997forCo=100 mg/L. Furthermore, the maximum adsorption capacity was 416.86 mg/g. Adsorption through kenaf was found to be very effective for the removal of the RO16 dye.

scholarly journals Decolorization of Reactive Dyes from Aqueous Solution Using Combined Coagulation-Flocculation and Photochemical Oxidation (UV/H₂O₂)

2020 ◽  
pp. 51-61 ◽  
Author(s):  
M Z Bin Mukhlish ◽  
Maksudur Rahman Khan ◽  
M S Islam ◽  
M I Nazir ◽  
J S Snigdha ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Process Parameters ◽  
Environmental Concern ◽  
Uv Light ◽  
Reactive Dyes ◽  
Photochemical Oxidation ◽  
Reactive Black 5 ◽  
Treatment Technique ◽  
Uv Light Irradiation ◽  
Reactive Orange

Removal of reactive dyes from wastewater is a great environmental concern. Attempts were made to study the performance of a coupling process of coagulation-flocculation (CF) and photochemical oxidation (PCO) for the removal of two reactive dyes (Reactive Black 5 (RB 5) and Reactive Orange 12 (RO 12)) from aqueous solution. The CF experiments were conducted using alum as coagulant and polyacrylamide as coagulant aid whereas the PCO tests were carried out using H2O2 in the presence of UV light irradiation. Effects of various process parameters such as pH, coagulant dose and coagulant aid dose on the CF process, and H2O2 dose and UV exposure time on the PCO method have been studied. The study reveals that only the CF process is not sufficient to treat the dye solution. The CF step could remove 52.30% and 41.38% of RB 5 and RO 12, respectively. At the best conditions of process parameters, the combined CF-PCO method results in color removals of 87.10% and 82.53% for RB 5 and RO 12, respectively. The combined process of CF and UV/H2O2 may be a useful treatment technique for wastewater contaminated with reactive dyes.

scholarly journals Cationic High Molecular Weight Lignin Polymer: A Flocculant for the Removal of Anionic Azo-Dyes from Simulated Wastewater

Molecules ◽  
2018 ◽  
Vol 23 (8) ◽  
pp. 2005 ◽  
Author(s):  
Shoujuan Wang ◽  
Fangong Kong ◽  
Pedram Fatehi ◽  
Qingxi Hou
Keyword(s):  
Molecular Weight ◽  
Azo Dyes ◽  
Textile Industry ◽  
Dye Removal ◽  
Complex Structure ◽  
Marginal Effect ◽  
Reactive Black 5 ◽  
Reactive Orange 16 ◽  
Simulated Wastewater ◽  
Reactive Orange

The presence of dyes in wastewater effluents made from the textile industry is a major environmental problem due to their complex structure and poor biodegradability. In this study, a cationic lignin polymer was synthesized via the free radical polymerization of lignin with [2-(methacryloyloxy) ethyl] trimethyl ammonium chloride (METAC) and used to remove anionic azo-dyes (reactive black 5, RB5, and reactive orange 16, RO16) from simulated wastewater. The effects of pH, salt, and concentration of dyes, as well as the charge density and molecular weight of lignin-METAC polymer on dye removal were examined. Results demonstrated that lignin-METAC was an effective flocculant for the removal of dye via charge neutralization and bridging mechanisms. The dye removal efficiency of lignin-METAC polymer was independent of pH. The dosage of the lignin polymer required for reaching the maximum removal had a linear relationship with the dye concentration. The presence of inorganic salts including NaCl, NaNO3, and Na2SO4 had a marginal effect on the dye removal. Under the optimized conditions, greater than 98% of RB5 and 94% of RO16 were removed at lignin-METAC concentrations of 120 mg/L and 105 mg/L in the dye solutions, respectively.

scholarly journals Study on the preparation of polymer-grafted coir fibre based adsorbent and its application to remove a reactive dye from aqueous solution

2014 ◽  
Vol 48 (4) ◽  
pp. 271-280 ◽  
Author(s):  
SK Ray ◽  
P Saha ◽  
HP Nur ◽  
D Saha ◽  
AI Hoque ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Treatment Plant ◽  
Cost Effective ◽  
Reactive Dye ◽  
Effluent Treatment ◽  
Sodium Chlorite ◽  
Reactive Orange 16 ◽  
Coir Fibre ◽  
Bleaching Procedure ◽  
Reactive Orange

Holocellulose was separated from Coir fibre by Sodium chlorite bleaching procedure. The adsorbent was synthesized by graft-copolymerization of acrylamide onto separated cellulose using potassium persulfate as a free radical initiator. Grafting percentage and grafting efficiency were measured and found to be 74.5 and 58% respectively. Prepared adsorbent was characterized by applying Fourier Transform- Infrared Spectrophotometer, Thermogravimetric/Differential Thermal Analyzer and Scanning Electron Microscope. Adsorbent prepared from holocellulose was successfully used at different adsorbent dosage, contact time, initial dye concentration and temperature to remove "Reactive Orange-16", a reactive dye from aqueous solution. Ultraviolet-Visible Spectrophotometric measurement of the dye in untreated and treated solutions showed that 0.2 g Holocellulose and Polyacrylamide-grafted holocellulose can remove 42% and 72% of Reactive Orange-16 dye from its 10 ppm aqueous solution within 1 hrs respectively. It may be proposed that Polyacrylamide-grafted holocellulose can be used in a traditional Textile Effluent Treatment Plant (ETP) as a cost effective adsorbent/alternative for decreasing the concentration of the reactive dye in the effluent. DOI: http://dx.doi.org/10.3329/bjsir.v48i4.18277 Bangladesh J. Sci. Ind. Res. 48(4), 271-280, 2013

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