Optimasi Dosis Koagulan dan Konsentrasi Pelarut Pada Biokoagulan Biji Asam Jawa dan Biokoagulan Komersil dalam Proses Pengolahan Air Limbah Laundry

Hanna Putri Kurnia Sari; Firra  Rosariawari; Syadzadhiya Qothrunada Zakiyayasin Nisa'

Authors

Hanna Putri Kurnia Sari Universitas Pembangunan Nasional “Veteran” Jawa Timur Author
Firra Rosariawari Universitas Pembangunan Nasional “Veteran” Jawa Timur Author
Syadzadhiya Qothrunada Zakiyayasin Nisa' Universitas Pembangunan Nasional “Veteran” Jawa Timur Author

Keywords:

Biokoagulan Biji Asam Jawa, Kitosan, Dosis Koagulan, Konsentrasi Pelarut

Abstract

This study aims to evaluate the effectiveness of tamarind seed-derived bio-coagulant and commercial chitosan coagulant in reducing Total Suspended Solids (TSS) and turbidity in laundry wastewater, focusing on the effects of coagulant dosage and solvent concentration. The tamarind seed bio-coagulant was dissolved in NaCl, while chitosan was dissolved in acetic acid. The highest removal efficiency for the tamarind seed bio-coagulant was 66.7% for TSS and 49.2% for turbidity at a dosage of 50 mL with 2 M NaCl concentration. In contrast, chitosan achieved optimal removal rates of 70% for TSS and 53.2% for turbidity at a dosage of 10 mL with 4% acetic acid. Statistical analysis indicated that dosage variation had no significant effect on TSS and turbidity removal for the tamarind seed bio-coagulant, whereas solvent concentration had a significant impact. For chitosan, dosage variation significantly affected turbidity reduction but not TSS, while acetic acid concentration significantly influenced both parameters. These findings highlight the critical role of solvent concentration optimization in enhancing the performance of both natural and commercial coagulants for laundry wastewater treatment.

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