Modelling and optimization of coagulation of highly concentrated industrial grade leather dye by response surface methodology

Abstract

High consumption of process water and water scarcity has motivated industry to reuse their wastewater. Membrane processes are vital to produce water for reuse from dyeing baths in the tanning industry. In this regard, synthetic dye was recognised as the major foulant. To minimise the membrane fouling, coagulation/flocculation process is an

Synthesis of NiFe2O4nanoparticles for removal of anionic dyes from aqueous solution

“…Various technologies, such as coagulation/flocculation, chemical oxidation, filtration, membrane separation, and microbial degradation, have shown limited success in the treatment of dye-containing wastewaters [6][7][8], and adsorption is considered to be the most effective technique for water and wastewater *Corresponding author.…”

Coagulation–flocculation process for landfill leachate pretreatment and optimization with response surface methodology

“…To optimize the levels of the selected variables, one can use the conventional experimentation method that involves changing one variable at a time, and maintaining the others fixed [5,10,11]. However, this experimentation method requires many experimental runs, that are time-consuming, and ignores the interaction effects between the parameters and leads to a low optimization efficiency [12]. Unlike the conventional method, statistical experimental designs can avoid these limitations and allow estimation of the effects of independent parameters and their interactions.…”

“…In particular, response surface methodology (RSM) is an efficient way to design, build models, and analyze the effects of several independent variables in order to optimize processes for different research types. It has been applied successfully in various scientific and technical fields such as chemical engineering, biochemistry, biotechnology, and environment [10,12,13]. Few studies were reported on the RSM application to optimize the operation conditions of the coagulation-flocculation process applied for landfill leachate treatment.…”

Modeling and optimization of the flocculation processes for removal of cationic and anionic dyes from water by an amphoteric grafting chitosan-based flocculant using response surface methodology

“…It is well known that the flocculation performance of the selected flocculants is governed by various factors, including the dosage of flocculant and various environmental parameters such as pH, mixing speed and time, temperature and retention time (Khayet et al 2011;Shi et al 2012). Its efficiency could be considerably enhanced after a proper optimization of these conditions.…”

“…Researchers have tried a variety of processing methods, such as chemical coagulation (Verma et al 2012), adsorption (Laasri et al 2007), nanofiltration (Lau and Ismail 2009) and advanced oxidation (Manenti et al 2014), to eliminate dye matters in wastewater. Among them, flocculation is universally acknowledged as one of the most widespread pretreatment technologies due to its relatively low cost and good performance (Khayet et al 2011;Verma et al 2012;Zahrim et al 2011).…”