Improved Dye Removal Ability of Modified Rice Husk with Effluent from Alkaline Scouring Based on the Circular Economy Concept
| Autor: | Nina Mladenovic, Katia Grgić, Dejan Mirakovski, Vesna Dimova, Anita Tarbuk, Igor Jordanov, Blazo Boev, Emilija Toshikj, Petre Makreski, Dejan Dimitrovski |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
closed-loop process
Earth and related environmental sciences Bioengineering 02 engineering and technology 010501 environmental sciences lcsh:Chemical technology complex mixtures 01 natural sciences Husk lcsh:Chemistry Chemical Engineering (miscellaneous) waste lcsh:TP1-1185 Effluent 0105 earth and related environmental sciences colored effluent purifying Process Chemistry and Technology Circular economy technology industry and agriculture activation of rice husk food and beverages 021001 nanoscience & nanotechnology Pulp and paper industry low-cost treatment biosorbent 30 closed-loop process Chemical sciences Wastewater Colored lcsh:QD1-999 Environmental science 0210 nano-technology |
| Zdroj: | Processes, Vol 8, Iss 653, p 653 (2020) Processes Volume 8 Issue 6 |
| ISSN: | 2227-9717 |
| Popis: | 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&rsquo 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 ° 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. |
| Databáze: | OpenAIRE |
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