Naslov
Improved Dye Removal Ability of Low-cost Modified Rice Husk with Effluent from Alkaline Scouring Based on the Circular Economy Concept

Autori
Mladenovic, Nina ; Makreski, Petre ; Tarbuk, Anita ; Grgić, Katia ; Boev, Blazo ; Mirakovski, Dejan ; Toshikj, Emilija ; Dimova, Vesna ; Dimitrovski, Dejan ; Jordanov, Igor

Izvornik
Processes (2227-9717) 8 (2020); 653, 17

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
biosorbent ; activation of rice husk ; waste ; colored effluent purifying ; low-cost treatment ; 30 closed-loop process

Sažetak
To improve the ability of the rice husk to purify colored wastewater, effluent from the 18 alkaline scouring of cotton yarn was used immediately after the scouring (without cooling and 19 additionally added chemicals) in order to remove the non-cellulosic silicon-lignin shield from the 20 rice husk’s surface. This rice husk, with 93.8 mg/g adsorption capacity, behaves similarly as the rice 21 husk treated with optimized alkaline scouring recipe consisting of 20 g/L NaOH, 2 ml/L Cotoblanc 22 HTD-N and 1 ml/L Kemonecer NI at 70oC for 30 min with an adsorption capacity of 88.9 mg/g of 23 direct Congo red dye. Treating one form of waste (rice husk) with another (effluent from the alkaline 24 scouring of cellulosic plant fibers) in an effort to produce a material able to purify colored effluent, 25 is an elegant environment- friendly concept based on the circular economy strategy. This will result 26 in a closed-loop energy-efficient process of pre-treatment of cotton (alkaline scouring), modification 27 of rice husk using effluent from the alkaline scouring, dyeing cotton fabrics and cleaning its colored 28 effluents with modified rice husk without adding chemicals and energy for heating.

Izvorni jezik
Engleski

Znanstvena područja
Tekstilna tehnologija

Napomena
Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University, Skopje, North Macedonia

POVEZANOST RADA