The  Comparative Perfomance and Kinetics of Phytoremediation and Bioremediation Systems for Tofu Wastewater

Roselyn Indah Kurniati; Yosef Adicita; Arini Wulan Dari; Nesa Zafira; Silda Adi Rahayu; Ferdy Ashari Syawal; Vayolla Syakirah Karil

doi:10.63643/jges.v4i1.405

Authors

Roselyn Indah Kurniati Universitas Riau
Yosef Adicita Politeknik Negeri Batam
Arini Wulan Dari Universitas Universal
Nesa Zafira Universitas Riau
Silda Adi Rahayu Universitas Riau
Ferdy Ashari Syawal Universitas Riau
Vayolla Syakirah Karil Universitas Riau

DOI:

https://doi.org/10.63643/jges.v4i1.405

Keywords:

eco enzyme, water hyacinth, phytoremediation, tofu wastewater, bioremediation

Abstract

Tofu industrial wastewater contains high levels of organic matter and suspended solids and is acidic, posing a significant water pollution risk if discharged untreated. This study aims to compare the effectiveness of phytoremediation using water hyacinth (Eichhornia crassipes) and eco-enzyme in reducing chemical oxygen demand (COD), total suspended solids (TSS), and pH of home-scale tofu wastewater. An experimental study was conducted over six days with three treatments: five water hyacinth plants (P1), a combination of water hyacinth and 10% eco-enzyme (P2), and 10% eco-enzyme alone (P3), with testing performed on days 0, 3, and 6. The initial wastewater characteristics showed a COD of 163.75 mg/L, TSS of 440 mg/L, and pH of 4.55. Treatment P1 yielded a COD reduction of approximately 41% and a TSS reduction of about 45% by day 6, along with an increase in pH to 4.82. Treatment P2 reduced COD by about 20.6% and TSS by about 36.3%, whereas P3 reduced COD by approximately 27.7% and TSS by 25%; both treatments decreased the pH to 3.82–4.34. One-way ANOVA tests revealed that exposure duration (3 and 6 days) had no significant effect on COD (p = 0,091), TSS (p = 0,628), or pH (p = 0,669). These findings indicate that water hyacinth without eco-enzyme supplementation is more effective and simpler to apply under the conditions of this study.

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