scholarly journals Effective Removal of Acid Dye in Synthetic and Silk Dyeing Effluent: Isotherm and Kinetic Studies

ACS Omega ◽  
2021 ◽  
Author(s):  
Elizaveta Sterenzon ◽  
Vinod Kumar Vadivel ◽  
Yoram Gerchman ◽  
Thomas Luxbacher ◽  
Ramsundram Narayanan ◽  
...  
Keyword(s):  
Kinetic Studies ◽  
Acid Dye ◽  
Effective Removal ◽  
Dyeing Effluent ◽  
Silk Dyeing

Usage of Hydrophobic Ionic Liquid [BMIM][PF6] for Recovery of Acid Dye from Wastewater and Sequential Application in Tussah Silk Dyeing

2013 ◽  
Vol 42 (6) ◽  
pp. 799-803 ◽  
Author(s):  
Jie Lin ◽  
Yi Teng ◽  
Yanhua Lu ◽  
Sheng Lu ◽  
Xu Hao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Acid Dye ◽  
Hydrophobic Ionic Liquid ◽  
Silk Dyeing

scholarly journals Biosorption of lead contaminated wastewater using cattails (Typha angustifolia) leaves: Kinetic studies

2011 ◽  
Vol 76 (7) ◽  
pp. 1037-1047 ◽  
Author(s):  
Sharain Ling ◽  
Collin Joseph ◽  
How Eng
Keyword(s):  
Linear Regression Analysis ◽  
Model Fitting ◽  
Kinetic Studies ◽  
Second Order ◽  
Batch Adsorption ◽  
Typha Angustifolia ◽  
Order Model ◽  
Effective Removal ◽  
Pseudo Second Order ◽  
The Common

In this work, dried leaves of Typha angustifolia (TA), also known as the common cattail, were used as an adsorbent in kinetic studies of Pb(II) adsorption from synthetic aqueous solutions. Batch adsorption studies with dried TA leaves were conducted and they were able to adsorb Pb(II) from 100 mL of a 25 mg L-1 Pb(II) solution effectively with the optimized dosage of 0.6 g. Adsorption equilibrium was achieved within 8 hours with an effective removal percentage of 86.04 %. Adsorption kinetics was further evaluated using four kinetic models, i.e., the pseudofirst order, pseudo-second order, intraparticle diffusion and Elovich model. Fitting of the data was performed based on linear regression analysis. The sorption kinetic data fitted best to the pseudo-second order model with an R2 of 0.9979, followed closely by the Elovich model with an R2 of 0.9952. The obtained results showed the adsorption of Pb(II) by TA leaves, which is an abundant biological material, is feasible, cheap and environmentally friendly.

scholarly journals Fourier Transform Infrared (FTIR) Spectroscopy and High-Performance Liquid Chromatography Analysis of Brassica juncea (Mustard) and Silk dye-ing effluent’s impact on the spectral studies

2019 ◽  
Vol 10 (2) ◽  
pp. 1266-1272
Author(s):  
Sumayya AR ◽  
Saranya R S ◽  
Sivagami srinivasan ◽  
Mohammed Rafiqkhan ◽  
Brindha PS ◽  
...  
Keyword(s):  
Pseudomonas Fluorescens ◽  
Fresh Water ◽  
Brassica Juncea ◽  
Hplc Analysis ◽  
Treatment Plant ◽  
Effluent Treatment ◽  
Spectral Studies ◽  
Methanolic Extracts ◽  
Dyeing Effluent ◽  
Silk Dyeing

The exclusive, low-cost nominal technology for the meagre entrepreneurs of Silk dyeing effluent has been planned and executed. Environmental pollutants exit like Silk dyeing effluent are destructive and needs a high-cost Common Effluent Treatment Plant (CETP) to achieve Zero effluent discharge limits which are not reasonably priced for a low venture capitalist. The Green leafy vegetable Brassica juncea sowed seeds were treated in pot study with fresh water, raw Silk dyeing effluent and Biotreated effluent (with Pseudomonas fluorescens and Azospirillum sp. biofertilizers separately). After 45th days the GLV’s extracts Brassica juncea were grown in fresh water (BJN), in crude effluent (BJE) and in biotreated effluent (BJT) were subjected to UV, FTIR and HPLC analysis. Thus from the functional group studies by FT-IR, the alcohol, alkane, alkyl halide and amine groups were found in GLV irrespective of the treatments, even in crude effluent, the plants managed to synthesize these organic compounds. The isocyanide group was found only in B. juncea, grown in fresh water, which was unable to synthesize isocyanide group in plants grown in crude effluent and biotreated effluent. While the biotreated B. juncea methanolic extracts had shown two peaks of similar to the freshwater B.juncea methanolic extracts whereas the crude effluent had its effect in HPLC Analysis. So it clearly indicates that the effluent's effects have been encountered by the Pseudomonas fluorescens.

scholarly journals Nanostructured Cellulose-Based Sorbent Materials for Water Decontamination from Organic Dyes

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1570 ◽  
Author(s):  
Laura Riva ◽  
Nadia Pastori ◽  
Alice Panozzo ◽  
Manuela Antonelli ◽  
Carlo Punta
Keyword(s):  
Environmental Remediation ◽  
Organic Dyes ◽  
Cellulose Nanofibers ◽  
Kinetic Studies ◽  
Building Blocks ◽  
Effective Removal ◽  
Naphthol Blue Black ◽  
New Material ◽  
Branched Polyethylenimine ◽  
Sorbent Materials

Nanostructured materials have been recently proposed in the field of environmental remediation. The use of nanomaterials as building blocks for the design of nano-porous micro-dimensional systems is particularly promising since it can overcome the (eco-)toxicological risks associated with the use of nano-sized technologies. Following this approach, we report here the application of a nanostructured cellulose-based material as sorbent for effective removal of organic dyes from water. It consists of a micro- and nano-porous sponge-like system derived by thermal cross-linking among (2,2,6,6-Tetramethylpiperidin-1-yl)oxyl (TEMPO)-oxidized cellulose nanofibers (TOCNF), branched polyethylenimine 25 kDa (bPEI), and citric acid (CA). The sorbent efficiency was tested for four different organic dyes commonly used for fabric printing (Naphthol Blue Black, Orange II Sodium Salt, Brilliant Blue R, Cibacron Brilliant Yellow), by conducting both thermodynamic and kinetic studies. The material performance was compared with that of an activated carbon, commonly used for this application, in order to highlight the potentialities and limits of this biomass-based new material. The possibility of regeneration and reuse of the sorbent was also investigated.

Effect of Fenton's treatment on the biodegradability of chromium-complex azo dyes

2007 ◽  
Vol 55 (12) ◽  
pp. 107-112 ◽  
Author(s):  
I. Arslan-Alaton ◽  
I. Kabdaşlı ◽  
S. Teksoy
Keyword(s):  
Experimental Studies ◽  
Kinetic Studies ◽  
Acid Dye ◽  
Colour Removal ◽  
Chromium Complex ◽  
H2o2 Decomposition ◽  
Fenton’S Reaction ◽  
Pretreatment Conditions ◽  
New Generation

Pretreatment of an acid dyebath effluent bearing a new generation chromium complex azo dyestuff (Co=350 mg/L) with Fenton's reagent was investigated. Preliminary optimisation (baseline) experiments were conducted to determine the Fe2 + , H2O2 concentrations and pH required to the highest possible COD and colour removals. Kinetic studies were carried out at varying temperatures (20 °C < T<70 °C) to establish a relationship between COD abatement and H2O2 consumption. The activation energy found for catalytic H2O2 decomposition (Ea=9.8 kJ/mol) appeared to be significantly less than that of fermentative (Ea=23 kJ/mol) and of thermal (Ea=76 kJ/mol) H2O2 decomposition, implying that H2O2 decomposition during the Fenton's reaction occurs more spontaneously. The experimental studies indicated that approximately 30% COD and complete colour removal could be achieved under optimised Fenton pretreatment conditions (Fe2 + =2 mM; H2O2=30 mM; pH = 3; at T = 60 °C). Long-term activated sludge experiments revealed that although the raw and pretreated acid dyebath effluent contained practically the same amount of “readily biodegradable” COD (inert COD fraction ≤10%), biodegradation of the chemically pretreated acid dye effluent proceeded appreciably faster than that of the untreated acid dyebath effluent.

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