The role of Procambarus clarkii in achieving Sustainable Development Goal-6 | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Article 17, Volume 26, Issue 3, May and June 2022, Pages 279-293 PDF (1.3 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.2022.241019 | ||
| Author | ||
| Wiame W. M. Emam et al. | ||
| Abstract | ||
| Pollution's cumulative negative repercussions are a key interconnected component of many worldwide challenges. Consequently, the current research aims, for the first time, to use chitosan (CS) extracted from Procambarus clarkii waste to alleviate not only heavy metal pollution, but also some of these challenges that can make achieving sustainability difficult. The study was divided into two parts; (1) conducting experiments in batches to determine the optimal operating parameters (contact duration “minutes”, pH, and initial metal concentration “mg/l”) required to reduce copper (Cu2+) or zinc (Zn2+) ion concentrations in aqueous solutions using 0.5 g CS (to meet the values set by WHO and Egyptian Governmental Law No. 48, 1982); and (2) elucidating the synergistic relationship between achieving the sixth SDG with other SDGs. Our results showed that the adsorption process, for both ions on CS, attained equilibrium at 20 minutes, pH 5.0 (for Cu2+) and 7.0 (for Zn2+), and initial concentrations of 4.49 mg/l (for Cu2+) and 5.15 mg/l (for Zn2+). The removal efficiency of the metal ions by CS decreased in the order of Cu2+ (99.11%) followed by Zn2+ (88.35%). Moreover, the investigated dose of CS (0.5 g) proved its potential to meet both the Egyptian and WHO guideline values for Cu2+ and Zn2+ concentrations. The very fast adsorption kinetics (20 min) observed for the studied metals showed an advantage for using CS in the purification system for the industrial sector. As a result, the percentage of untreated industrial wastewater will decrease, clearing the path for Egypt to make a significant progress toward its 2030 sustainable development targets. | ||
| Keywords | ||
| SDG-6.3; Wastewater treatment; Chitosan; Copper; Zinc; Batch Adsorption; Adsorption capacity; Removal Efficiency | ||
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