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| Advisor(s) | EVFY SEPTRIANI GINTING, S.Tr.Kes., M.K.M | |
| Author(s) | Nurhijjah, Siti | |
| Issued Date | 2026 | |
| Abstract | Laundry wastewater contains various pollutants, particularly Total Dissolved Solids (TDS) and Total Suspended Solids (TSS), which may adversely affect environmental quality when discharged without adequate treatment. One environmentally friendly and cost-effective treatment alternative is the utilization of eggshells as an adsorbent due to their high calcium carbonate (CaCO₃) content and excellent adsorption capacity. This study employed a pre-experimental research design using a One-Group Pretest–Posttest Design. Eggshell powder was applied as an adsorbent at three dosage levels, namely 5 g, 10 g, and 15 g, with two replications for each treatment. Data were analyzed using univariate analysis to describe the characteristics of the research variables. The findings demonstrated that eggshell adsorbent effectively reduced both TDS and TSS concentrations in laundry wastewater. The mean post-treatment TDS concentrations at dosages of 5 g, 10 g, and 15 g were 339 mg/L, 82 mg/L, and 204.5 mg/L, respectively, with average removal efficiencies of 59.6%, 86.8%, and 68.5%. Meanwhile, the mean post-treatment TSS concentrations were 108 mg/L, 112.25 mg/L, and 110.25 mg/L, with average removal efficiencies of 47.07%, 50.91%, and 47.34%, respectively. The Wilcoxon Signed-Rank Test revealed statistically significant differences in both TDS and TSS concentrations before and after treatment (p = 0.002, p < 0.05), indicating that eggshell adsorption significantly improved the quality of laundry wastewater. In conclusion, eggshells are effective as a natural and the 10 g dosage exhibited the highest removal efficiency for both parameters. | 1 |
| Item Type | Skripsi | |
| Keywords | Adsorpsi (Adsorption), Cangkang Telur (Eggshell) , Air Limbah Laundry (Laundry Wastewater, Total Dissolved Solid (TDS), Total Suspended Solid (TSS) | 1 |
| Collection | Fakultas Kesmas, S1-Kesehatan Masyarakat | |
| Publisher | INSTITUT KESEHATAN DELI HUSADA | |
| Submitted Date | 06-08-2026 | |
| Updated Date | 22-09-2026 | |
| URI | No URI | |
| File |
2212070_SitiNurhijjah_Skripsi_S1.pdf
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