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A Tofu Wastewater Treatment Using Combination of Plasma Electrolysis and Coagulation-Flocculation Method

Author

Listed:
  • Widya Pangestika

    (The Department of Chemical Engineering, University of Indonesia, Depok, Indonesia)

  • Tulus Sukreni

    (The Department of Chemical Engineering, University of Indonesia, Depok, Indonesia)

  • Nadira Kamilia Permatasari

    (The Department of Chemical Engineering, University of Indonesia, Depok, Indonesia)

  • Nelson Saksono

    (The Department of Chemical Engineering, University of Indonesia, Depok, Indonesia)

Abstract

Untreated tofu wastewater is an organic waste that has very high COD and TSS, 7771.3 mg/L and 840.5 mg/L, respectively. This high pollution parameters may endanger the environment if the wastewater is discharged to it. In order to prevent that damage, these pollution parameters have to be reduced with an effective treatment. In this research, a tofu wastewater was treated using a combination method of plasma electrolysis and coagulation-flocculation with 1% chitosan solution as the coagulant. Coagulation-flocculation method was used for wastewater pretreatment because it could reduce the high pollution parameters in tofu wastewater while plasma electrolysis could reduce them to their smallest concentration. The best chitosan volume for reducing TSS to 74.4% was 20 mL while the best volume for lowered COD to 16.8% was 40 mL. Plasma electrolysis was the next step for tofu wastewater degradation; it could drop the value of COD of tofu wastewater to 36% during a 60-minute process at 2000 mg/L as the initial concentration of the wastewater.

Suggested Citation

  • Widya Pangestika & Tulus Sukreni & Nadira Kamilia Permatasari & Nelson Saksono, 2018. "A Tofu Wastewater Treatment Using Combination of Plasma Electrolysis and Coagulation-Flocculation Method," International Journal of Technology and Engineering Studies, PROF.IR.DR.Mohid Jailani Mohd Nor, vol. 4(2), pages 42-49.
    • Handle: RePEc:apa:ijtess:2018:p:42-49
    DOI: 10.20469/ijtes.4.10001-2
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    References listed on IDEAS

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    1. Pongsakorn Truttim & Prapa Sohsalam, 2016. "Comparison of electrocoagulation using iron and aluminium electrodes for biogas production wastewater treatment," Journal of Advances in Technology and Engineering Research, A/Professor Akbar A. Khatibi, vol. 2(2), pages 35-40.
    2. Patama Bunruk & Duangporn Kantachote & Ampaitip Sukhoom, 2017. "Isolation and selection of purple non-sulfur bacteria for phosphate removal in rearing water from shrimp cultivation," Journal of Applied and Physical Sciences, Prof. Vakhrushev Alexander, vol. 3(2), pages 73-80.
    3. Kannan Rassiah & M. M. H Megat Ahmad & Aidy Ali, 2016. "Effect on mechanical properties of rice Husk/E-Glass polypropylene hybrid composites using sodium hydroxide (NaOH)," Journal of Advances in Technology and Engineering Research, A/Professor Akbar A. Khatibi, vol. 2(4), pages 105-111.
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