In a typical wastewater treatment fl ow sheet used by several industrial units in Indi a. various stages of treatment include primary treatment. foll owed by secondary treatment . and tertiary treatment. The concentration of total dissolved solids increases during neutrali zation of the wastewater with acid/ alkali during primary treatment. which adversely affects the activity of microorgani sm...

the main aim of this research is to determine optimal leaching conditions; eh, ph and complexing agent concentrations, for recovery of copper from hydroxide sludges such as those produced by electroplating shops, metal finishers, treatment of acid mine drainage, and industrial wastewater in general. this has been preceded by a theoretical approach and numerical and computer calculation. potenti...

This paper presents the development of a model based decision support system with a case study on solving the supplier selection problem in a chemical processing industry. For the evaluation and selection of supplier, the analytical hierarchy process (AHP) and grey relational analysis (GRA) were used. The intention of the study is to propose an appropriate platform for process industries in sel...

This work deals with a comparison between electroplating and Physical Vapor Deposition (PVD) finishing technologies applied in the fashion industry, special focus on their environmental impacts. The goal of this is to present validate Decision Support System (DSS) allowing companies identify, through Life Cycle Assessment (LCA) analysis, which two types processes more suitable specific KPIs. Af...

A novel method combined theoretical and experimental study for environmental friendly silver electroplating was introduced. Quantum chemical calculations and molecular dynamic (MD) simulations were employed for predicting the behaviour and function of the complexing agents. Electronic properties, orbital information, and single point energies of the 5,5-dimethylhydantoin (DMH), nicotinic acid (...

The polyamine (PA) was prepared by condensation of 1, 4-bischloromethyl benzene and 1, 4benzene diamine. The PA was then treated with cyanuric chloride at 0oC followed by reaction with sulfanilic acid in THF in concentrated NaOH (pH 9-10) at room temperature for 8 hrs. The resultant polymer designated as polyamine-s-triazine-sulfanilic acid (PATS) was characterized by elemental analysis, IR spe...

The discharge of waste water containing heavy metals like Cr, Cd, Cu from tanneries, electroplating units, metal processing industry etc is the major cause for metal pollution which in turn causes adverse effects in the environment. The conventional methods available for removal of heavy metal are costly and also produce some toxic sludge. This has lead to the invention of new technology like b...

Nowadays, water pollution has become a matter of great concern in our society. Most of the water pollutions are related to the industrial effluents. Textile industry is the one of the most important industry in all over world and this industry uses large volumes of water in wet processing operations and thereby, generates substantial quantities of wastewater containing large amounts of dissolve...