Fajar Budi Laksono, Dian Majid, Aditya Rio Prabowo
Background: The problem of ballast water is caused by microorganisms. The solution to solve this problem is ballast water disinfection. Until the recent day, there have not been many practical solutions. Usually, ozone, chlorine, and UV treatments were used for disinfection. However, these methods still have many weaknesses in treating ballast water. Methods: The ferrate(vi) system proposed in this paper is liquid ferrate(vi) produced on-site using a slow-released system and combined with ultrasound. This paper investigated the optimum time to produce liquid ferrate(vi), pH, and temperature. Results: The optimum synthesis time has been observed to be 10 min with the produced ferrate(vi) of 42,000 ppm. The optimal pH and temperature to make ballast water harmless have been observed to be the neutral pH condition at 25°C, respectively. The design of ballast water treatment using ferrate(vi) combined with ultrasound has also been proposed in this paper. Conclusions: Ferrate(vi), as the primary material in ballast water treatment, has been successfully synthesized. The process of ballast water treatment using ferrate(vi) combined with ultrasound can be performed automatically using a time sensor and a mass sensor. With the proposed design, it can be a promising solution to solve the problems related to ballast water. © 2022 Fajar Budi Laksono et al., published by De Gruyter.
Department of Research and Development, P. T. DTECH Inovasi Indonesia, Salatiga, 50742, Indonesia; Department of Environmental Engineering, Universitas PGRI Adi Buana Surabaya, Surabaya, 60234, Indonesia; Department of Mechanical Engineering, Universitas Sebelas Maret, Surakarta, 57126, Indonesia
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