Effectiveness of Kiambang Plants (Salvania molesta) in Reducing BOD (Biological Oxygendemand) Levels

Navira Wahyu Vania; Dwi Astuti

Authors

Navira Wahyu Vania Faculty of Public Health, Muhammadiyah University of Surakarta
Indonesia
Dwi Astuti Faculty of Public Health, Muhammadiyah University of Surakarta
Indonesia

Keywords:

phytoremediation, Salvinia molesta, Biological Oxygen Demand, soybean curd wastewater

Abstract

Industry plays an important role in economic development, but its growth often has a negative impact on the environment. One industry that contributes to pollution is the tofu industry, which is mostly household-scale and not equipped with a wastewater treatment system. Tofu wastewater contains organic and inorganic materials that exceed environmental quality standards, such as BOD, COD, and TSS, which can pollute water bodies and cause health problems.. The BOD level based on secondary data from the Tofu Industry in Moyoretno Village, Matesih District, was 191.1 mg/L, this result exceeds the wastewater quality standard. Phytoremediation is a wastewater treatment method that utilizes aquatic plants to absorb, decompose, and stabilize pollutants in wastewater. The kiambang plant (Salvinia molesta) was chosen to have high hyperaccumulator ability and fast growth, so it is effective in reducing pollutant levels in wastewater. The purpose of this study was to determine the effectiveness of kiambang plants to reduce BOD levels in the Tofu Industry in Moyoretno Village, Matesih District. This type of research is a true experiment with a pretest-posttest with control research design. The location of the study was in the Tofu Industry in Moyoretno Village, Matesih District. Phytoremediation using 4 plants, 6 plants, 8 kiambang plants was carried out for 7 days in 15 liters of wastewater. The average results of the effectiveness of BOD levels after treatment were 40.45%; 61.41%; 73.13%. The statistical test used was One Way Annova. The results of the study showed that kiambang plants were effective in reducing BOD levels in wastewater with an effective dose of 8 plants (p-value 0.001). This method can be applied to small and medium industries to reduce environmental pollution due to the disposal of tofu waste that is not properly processed. This study is also expected to be the basis for further development in the application of phytoremediation technology in various other food processing industries.

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Acknowledgements

The author would like to thank the Public Health Study Program, Faculty of Health Sciences, Muhammadiyah University Surakarta, for the opportunity to write this research article. Thanks are also extended to all those who have helped.

Author Contributions

Conceptualization: Navira Wahyu Vania, Dwi Astuti; methodology: Navira Wahyu Vania, Dwi Astuti; investigation: Navira Wahyu Vania, Dwi Astuti; writing—original draft preparation: Navira Wahyu Vania, Dwi Astuti; writing—review and editing: Navira Wahyu Vania, Dwi Astuti; visualization: Navira Wahyu Vania, Dwi Astuti.. All authors have read and agreed to the published version of the manuscript.

Conflict of interest

All authors declare that they have no conflicts of interest.

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