| Title |
Improved Dye Removal Ability of Modified Rice Husk with Effluent from Alkaline Scouring Based on the Circular Economy Concept |
| ID_Doc |
5745 |
| Authors |
Mladenovic, N; Makreski, P; Tarbuk, A; Grgic, K; Boev, B; Mirakovski, D; Toshikj, E; Dimova, V; Dimitrovski, D; Jordanov, I |
| Title |
Improved Dye Removal Ability of Modified Rice Husk with Effluent from Alkaline Scouring Based on the Circular Economy Concept |
| Year |
2020 |
| Published |
Processes, 8, 6 |
| DOI |
10.3390/pr8060653 |
| Abstract |
To improve the ability of the rice husk to purify colored wastewater, effluent from the alkaline scouring of cotton yarn was used immediately after the scouring (without cooling and additionally added chemicals) in order to remove the non-cellulosic silicon-lignin shield from the rice husk's surface. This rice husk, with 93.8 mg/g adsorption capacity, behaves similarly as the rice husk treated with an optimized alkaline scouring recipe consisting of 20 g/L NaOH, 2 mL/L Cotoblanc HTD-N and 1 mL/L Kemonecer NI at 70 degrees C for 30 min with an adsorption capacity of 88.9 mg/g of direct Congo red dye. Treating one form of waste (rice husk) with another (effluent from the alkaline scouring of cellulosic plant fibers), in an effort to produce a material able to purify colored effluent, is an elegant environment-friendly concept based on the circular economy strategy. This will result in a closed-loop energy-efficient process of the pre-treatment of cotton (alkaline scouring), modification of rice husk using effluent from the alkaline scouring, dyeing cotton fabrics and cleaning its colored effluents with modified rice husk without adding chemicals and energy for heating. |
| Author Keywords |
biosorbent; activation of rice husk; waste; colored effluent purifying; low-cost treatment; closed-loop process |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000552472900001 |
| WoS Category |
Engineering, Chemical |
| Research Area |
Engineering |
| PDF |
https://www.mdpi.com/2227-9717/8/6/653/pdf?version=1592877010
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