In this study, durian (Durio zibethinus Murray) skin was examined for its ability to remove methylene blue (MB) dye from simulated textile wastewater. Adsorption equilibrium and kinetics of MB removal from aqueous solutions at different parametric conditions such as different initial concentrations (2–10 mg/L), biosorbent dosages (0.3–0.7 g) and pH solution (4–9) onto durian skin were studied using batch adsorption. The amount of MB adsorbed increased from 3.45 to 17.31 mg/g with the increase in initial concentration of MB dye; whereas biosorbent dosage increased from 1.08 to 2.47 mg/g. Maximum dye adsorption capacity of the durian skin was found to increase from 3.78 to 6.40 mg/g, with increasing solution pH. Equilibrium isotherm data were analyzed according to Langmuir and Freundlich isotherm models. The sorption equilibrium was best described by the Freundlich isotherm model with maximum adsorption capacity of 7.23 mg/g and this was due to the heterogeneous nature of the durian skin surface. Kinetic studies indicated that the sorption of MB dye tended to follow the pseudo second-order kinetic model with promising correlation of 0.9836 < R2 < 0.9918.
The aim of the study was to assess the potentiality of an agro-waste (sugarcane bagasse) for removal of the textile dye (Optilan Red) using novel column based filtration unit with a packed column of chemically treated sugarcane bagasse. The treated and untreated sugarcane bagasse (biosorbent) were characterized by Fourier transform infrared (FT-IR) spectroscopy. Effect of initial dye concentration on percentage removal of dye, equilibrium adsorption of sugarcane bagasse, kinetic studies, breakthrough point...
Product: Honeycat, Catalytic Oxidation System
Application: Textile, Resin coating
Customer: Permali, Ltd
Site: Gloucester, UK
Flowrate: 15,000, Nm3 hr-1
VOCs: Methyl,Cellosolve, Acetone, MEK & IMS
Concentration: 0,to 8 gNm-3
Emission, Levels: VOCs,50 mg Nm-3 – CO,100 mg Nm-3 – NOx,100 mg Nm-3
Installed, Date: March,2008
Comments: The skid, mounted unit was delivered, off loaded & position on same day. The Honeycat System includes Precious Metal based Oxidation catalyst, Gas fired,burner...
The textile industry is a water consumption intensive industry. Water is utilized for cleaning the raw material, and for the different steps in the textile dyeing process.
Due to the effects of water scarcity and stricter environmental regulations, the cost of fresh water utilization has increased worldwide.
In addition, the textile industry is faced with pressure by government regulators to move toward sustainability, by reducing the consumption of water, while internal pressures to maintain or increase profit...
Decoloration of waste water with SERA CON C-BOR / C-RAP – an easy process
Official Comments
strongest reduction agent resulting in a rapid and complete decoloration of dyestuffs that are sensitive to reducing agents.
decoloration is based on a decomposition mechanism, i.e. after decoloration the dyestuffs are present in respective colorless fractions
residual liquors can be decolorized in relatively short time by more than 95% without any heating
cancerogenic amines are not developed more than 95%...
Following new trends we applied oxygen uptake rate (OUR) tests as well as long-term tests (in two batch bioreactors systems) in order to assess the biodegradability of textile wastewater. Effluents coming from a dyeing factory were divided into two streams which differed in inorganic and organic contaminants loads. Usefulness of the stream division was proved. Biodegradation of the low-loaded stream led to over 97% reduction of biochemical oxygen demand (BOD5) together with 80% reduction of chemical oxygen demand...
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