| Autor: |
Dinesha, Bettathavarekere Lingamurthy1 (AUTHOR) dinirbdgtc@gmail.com, Hiregoudar, Sharanagouda1,2 (AUTHOR), Nidoni, Udaykumar2 (AUTHOR), Ramappa, Kotrappa Thowdur2 (AUTHOR), Dandekar, Anilkumar T.3 (AUTHOR), Sankalpa, Kallahalli Boregowda4 (AUTHOR) |
| Předmět: |
|
| Zdroj: |
Journal of Polymers & the Environment. Mar2023, Vol. 31 Issue 3, p1173-1190. 18p. |
| Abstrakt: |
This study aimed to create a breakthrough environmentally friendly technology that is scalable, stable, and efficient in the commercial treatment of wastewater from the milk processing industry. In this study, chitosan zinc oxide nano-adsorbent (CZnO) of 88.35 ± 2.89 d.nm size was synthesized and then CZnO coated with sand (CSZOCS) filter bed was developed. Characterization of CSZOCS was done by considering its adsorption properties as well as its surface morphology, crystallinity, and functional groups. Batch adsorption experiments were conducted to optimize the process parameters such as CZnO coating dosage, contact time, pH, initial concentration of biological oxygen demand (BOD), and chemical oxygen demand (COD). The percent removal efficiency (%RE) was studied by treating simulated and real milk processing industry wastewater (MPIW). The %RE of organic pollutants was found to increase with the increase in contact time and coating dosage of CZnO. Adsorption was observed to be rapid and occurred within 140 min with different coating dosages. The %RE of BOD and COD increased with the increase in pH, and the optimum pH for the adsorption of both pollutants was 6. The equilibrium concentration of synthetic simulated milk wastewater reached 200 mg/L and 250 mg/L for both pollutants. Four regeneration cycles were applied without compromising the desorption efficiency of the CSZOCS filter bed. The adsorption performance was compared with previous studies, and it was found to have excellent adsorption efficiency. Hence, CSZOCS could be used as a promising super-adsorbent for the removal of organic load from MPIW. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
| Externí odkaz: |
|
Full text from SpringerLink