This study provides a comparison between classic and modified (i.e., ultrasound) Fenton process on the industrial textile wastewater. For this purpose, classic, ultrasound were investigated compared using following parameters: pH of solution, amount ferrous ion (Fe(II)), hydrogen peroxide as well reaction time. With these parameters, degrading organic compounds decolorization percentage) was calculated. The best percentage (95% for Pt-Co) found 0.10 g L−1 Fe(II), 2.20 H2O2 90 min at 3...

The paper gives a common outline about the known recycling techniques from electric arc furnace dusts and describes an investigation of pyrometallurgical process for recovery zinc iron (EAFD). In waelz process, reduction waste oxides using solid carbon (lignite coal) was studied. experiments; temperature, time charge type (powder pellet) were investigated in detail. It demonstrated that (%) increases with increasing temperature as well time. Pelletizing found to be better method than powder...

The paper describes the synthesis of hydroxyethyl cellulose from industrial waste, namely, air particle vacuum dust (APVD). selected reaction parameters were sodium hydroxide concentration, ethylene oxide proportion, time, and temperature in an attempt to understand their effects on reaction. For this purpose, APVD was bleached mercerized using hydrogen peroxide solution remove/dissolve non-cellulosic material. modified waste material then reacted with under microwave irradiation obtain...

The present work describes an investigation of a chemical process for the recovery copper and iron from malachite ore. For dissolution iron, H2SO4 was employed as well H2O2 oxidizing agent. effects reaction temperature time, acid concentration, liquid-to-solid ratio agitation rate on percentage were investigated. Following steps dissolving sulfate filtering, (III) hydroxide precipitated by adjusting pH level solution. Subsequently, pentahydrate obtained using various precipitants (i.e....

Present work investigates platinum uptake from synthetically prepared, dilute platinum-bearing solutions using biomass residues, i.e. pistachio nut shell and rice husk, which are abundant in Turkey, provides a comparison between these two biosorbents. Effects of the different parameters, sorbent dosage, contact time, temperature pH solution on (%) were studied detail batch sorption. Before was activated, poor compared to husk. However, after activated at 1000 °C under an argon atmosphere,...

AbstractAbstractWaste radiographic films can act as potential source materials for the recovery of valuable silver. In this study, a chemical processing scheme was adopted to recover silver metal from waste films. The were dissolved in 1 M nitric acid (HNO3) solution 3 hours at 70°C convert into nitrate (AgNO3(aq)). Subsequently, treated using two different methods. first involved cementation with fine iron powder and zinc powder. These well-known cementators compared each other respect...

In this paper, adsorption of gold from chloride media using commercial sorbent (Lewatit TP 214 (L-214)) and biomass residue (rice hull (RH)) were investigated. The different parameters, dosage, contact time, temperature pH solution on (%) studied in detail a batch sorption. Before the RH was activated, poor compared with L-214. However, after activated at 1000 °C under an argon atmosphere, increased four-fold. X-ray fluorescence (XRF) used to explore feasibility material as adsorbent for...

Abstract In this work, sorption of gold from electronic waste solutions using a commercial sorbent, Lewatit TP 214, was investigated. The effects the different parameters on (%) were studied in detail. Sorbent dosage, contact time, temperature, and solution pH selected as parameters. Additionally, by 214 is diffusion-controlled process with activation energies 12.28 kJ/mol. thermodynamic values such ΔG°, ΔH°, ΔS° calculated experimentally obtained results. reaction spontaneous endothermic....

This work investigates the adsorption behavior of Diethylaminoethyl-cellulose-thiourea-glutaraldehyde (DEAE-C/TU/GA) sorbent, which was synthesized through reaction crosslinking glutaraldehyde using thiourea for platinum (Pt(IV)) and palladium (Pd(II)) ions from leaching solutions. The effects pH parameters, such as sorbent dosage, contact time, temperature, isotherms, were studied. Furthermore, chemical kinetic studies adsorptions these metal carried out. equilibrium data fit better...

This work investigates the performance of nickel sulfide fire assay (NiS-FA) for pyrometallurgical analysis platinum group elements (PGEs) from mixtures automotive exhaust catalytic converters (e.g., gasoline, diesel, and diesel particular filter) by assessing effects various flux materials reaction parameters on platinum, palladium, rhodium recovery. Inductively coupled plasma mass spectrometry atomic absorption spectroscopy (AAS) are used NiS-FA beads. We found that optimum recovery (at...

Geçen yüzyıldan itibaren artan dünya nüfusu ile sanayileşme ve kentleşme, kirleticilerin türleri atıkların tipleri artmaktadır. Bu kirliliğin ana kaynaklarından biri, endüstride yaygın olarak kullanılan fosil yakıtlardır. Sanayi şirketlerinin şehirlere yakın bir yerde kuruluyor olması ilgili kurumlardan tarafından kontrol edilemeyen bu şirketler birçok kirlilik ihlalleri oluşturmaktadır. nedenle atmosfere yerleşen hava kirliliğine neden olmaktadır. Böylece, atmosferin bileşenleri yakıtlarda...