Most of previous papers in the field of dye removal used one dye or dyes with nearly separate spectra that simplifies dyes concentration determination by Beer's law at different λmax. In many real situations, dyes with highly overlapped spectra exist and their concentrations can be determined by multivariate analysis methods. In this study, principal component-wavelet neural network (PC-WNN) wa...

The precipitation of struvite from wastewater is a potential alternative for the recovery nutrients, especially phosphorus, which an essential macronutrient agriculture but can be harmful to environment when improperly disposed in water bodies. In addition, has elements great added value agricultural activity (P, N, and Mg) is, therefore, considered sustainable fertilizer. its formation process...

Rockrose lignocellulosic residues (RR) were selectively fractionated for hemicellulose separation using autohydrolysis, followed by an alkaline treatment to solubilize the lignin. The cellulose-enriched solids used study effect of solid loading (SL: 2–10%) and enzyme dosage (ED: 6.34–23.66 FPU/g dry biomass) on saccharification a Doehlert experimental design, fermentation with metabolic enginee...

The present paper describes the on-line coupling of a flow-injection system to a new technique, thermospray flame furnace-AAS (TS-FF-AAS), for the preconcentration and determination of copper in water samples. Copper was preconcentrated onto polyurethane foam (PUF) complexed with ammonium O,O-diethyldithiophosphate (DDTP), while elution was performed using 80% (v/v) ethanol. An experimental des...

Platanus tree leaves were successfully used as a novel sorbent for removing of methylene blue (MB) dye from aqueous solutions. A 2(3) full factorial design was performed for screening of the main factors. The pH, initial concentration of dye (C(d)) and amount of sorbent (m) were considered to be the three main factors at two different levels. It was found that all these factors and their intera...