ЕMISSION REDUCTION OF COLORED WASTE WATER AFTER CONTACT WITH A NATURAL SORBENT WITH A SPECIAL FOCUS ON THE THERMODYNAMICS OF ADSORPTION
Journal Title: Annals of the University of Oradea. Fascicle of Textiles, Leatherwork - Year 2017, Vol 0, Issue 2
Abstract
The possibilities of using an inexpensive sorbent for dyes removal from waste waters after textile dyeing were investigated in this work. Ashes from city heating plant that arise as a by-product in the burning process during the city central heating operated were sorbent. After chemical modification of the ashes it were transformed to the efficient sorbent. Based on the results from this paper, it can be said that the sorbent produced from ashes has potential for the textile dyes removal from aqueous solutions and emission reduction of toxic dyes. A metal complex textile dye was used and the adsorption thermodynamics were studied. On the basis of obtained results, it can be concluded that the natural sorbent is an efficient sorbent for metal complex removal dye from aqueous solution and has a potential for use on an industrial scale. Characterization of other similar, solid waste materials can help explain adsorbate–sorbent interactions in order to optimize and increase efficiency of adsorption process as an environmentally acceptable process. Negative values of free energy change indicate a spontaneous nature of adsorption, negative values of free enthalpy change indicate an exothermic adsorption process and negative values of free entropy change indicate a decrease of disordered system at solid – liquid interface during adsorption. Based on adsorption, kinetic and thermodynamic parameters it can be concluded that chemisorption of the dye on the sorbent is also present together with physical adsorption.
Authors and Affiliations
Dragan DJORDJEVIC, Snezana UROSEVIC, Suzana DJORDJEVIC
Keywords
Related Articles
- EP ID EP260842
- DOI -
- Views 105
- Downloads 0
DE LEGE FERENDA PROPOSAL FOR THE COMPLETION OF THE LEGAL FRAMEWORK REGARDING THE TEXTILE PRODUCTS, IN THE CONTEXT OF A SOCIAL RESPONSIBLE MANAGEMENT
In the case of this economic operator, manufacturing or trading textile products, the corporate social responsibility is a social must, and it consists of a set of objectives which must be implemented by the management o...
STUDY REGARDING THE STITCHING STRENGTH OF MATERIALS USED FOR FOOTWEAR UPPERS MANUFACTURING
The shoes manufacturing implies the use of various types of leathers, leather substitutes and fabric. The sewing plays a very important role in shoe making, having an impact both in terms of functionality and outlook. O...
MOTIVATION OF MANUFACTURING PERSONNEL IN THE FIELD OF BUSINESS
In the Republic of Moldova, the analyzed footwear enterprise is known as a brand that produces and sells footwear for the whole family, with an experience of more than 70 years of activity. Over the years, this has been...
STUDY OF THE INTEGRATED QUALITY-RISK MANAGEMENT FOR INDUSTRIAL COMPANIES
The quality of products is the final expression of the quality of production processes, given the technical, economic, psycho-sensory, etc. performances of the products. Industrial quality refers to the conformity of the...
VISCOSE BASED MAGNETIC YARNS – PHYSICAL AND MECHANICAL CHARACTERIZATION
In the context of the rapid growth in the number of electrical and electronic devices and accessories that emit electromagnetic energy in different frequency bands we present and characterize here several magnetic functi...