Naslov
Adsorptive Removal of Congo Red from Synthetic and Real Wastewater Using Brewers' Spent Grain

Autori
Kezerle, Antonija ; Velić, Natalija ; Stjepanović, Marija ; Velić, Darko ; Pavlović, Hrvoje ; Čačić Kenjerić, Frane

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
Proceedings & abstracts 13th international scientific/professional conference Agriculture in Nature and Environment Protection / Jug, Danijel ; Ravlić, Marija - Osijek : Glas Slavonije, 2020, 285-286

Skup
12. međunarodni znanstveno-stručni skup: Poljoprivreda u zaštiti prirode i okoliša = 12th International Scientific/Professional Conference: Agriculture in Nature and Environment Protection

Mjesto i datum
Osijek, Hrvatska, 07.09.2020. - 09.09.2020

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
adsorption ; brewers’ spent grain ; Congo Red ; synthetic wastewater ; real wastewater

Sažetak
Synthetic dyes are extensively used in many industries. However, a large portion of the dye used for dying of different materials does not remain on the material and enters the environment via industrial wastewater. The presence of dyes in bodies of water receiving the coloured industrial effluents is highly visible, even at very low concentrations and can have serious detrimental effects. Brewers’ spent grain (BSG) was previously evaluated as a low-cost adsorbent for the removal of Congo Red (CR) from the model CR solution. In this study, adsorptive removal from synthetic and real wastewater was investigated in batch adsorption experiments. The experimental conditions were as follows: initial dye concentrations of 0.01, 0.05 and 0.20 g dm-3, while all other parameters were kept constant (Vdye solution = 0.10 dm3, γadsorbent = 10 g dm- 3, 298.15 K, contact time of 300 min). The percentage of CR removal from 0.20 g dm-3 aqueous dye solution was 55.70, 93.18 and 83.53% for CR model solution, synthetic wastewater and real wastewater, respectively. The obtained adsorption data were further analysed by pseudo-first-order and pseudo-second-order kinetic models, and the results revealed that the pseudo-second-order model well described the kinetics of the adsorption process, regardless of the investigated effluent (model dye solution, synthetic and real wastewater). Since the aforementioned models cannot be used to describe the diffusion mechanism, the intraparticle diffusion model was used, and the results suggest that intraparticle diffusion was not the only process controlling the adsorption.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija, Prehrambena tehnologija

POVEZANOST RADA