Abstract
The liquid waste of the tofu industry contains high organic contaminants, such as proteins and amino acids. These organic compounds causes liquid waste of tofu industry to contain high BOD, COD, and TSS so that it can pollute the environment. Therefore, tofu liquid should be removed first by electrocoagulation method. This method has the potential to purify tofu liquid waste and decrease the content of COD, BOD, TSS, and pH contained without the addition of coagulants. The purpose of this study was to determine the effect of voltage and flow rate to neutralize pH, and reduce levels of COD, BOD, and TSS in tofu liquid waste. The parameters tested included COD, BOD, TSS, and pH. The electrocoagulation process uses electrical power that flows in the direction of the electrode. The electrocoagulation reactor was paired with a cable connected to the power supply then connected to an electric current with voltage and flow rate variations. The results of this study found that optimum conditions were obtained at current of 12 V and flow rate of 0.087 L/min with increasing pH from pH from 3.5 to 6.7, percent removal of COD 72.17%, percent removal BOD 71.53% , and percent removal TSS 90.90%.
Highlights
The liquid waste of the tofu industry contains high organic contaminants, such as proteins and amino acids
Variabel Tegangan Air limbah sebanyak 5L dimasukkan ke dalam reaktor elektrokoagulasi, Mengalirkan limbah tahu dengan tegangan 8 V, dan laju alir 0,439 L/menit, 0,234 L/menit dan 0,087 L/menit
Dari Tabel 2 diketahui bahwa terdapat satu variasi tegangan dan laju alir yang dapat menurunkan nilai Chemical Oxygen Demand (COD) dari 1017 mg/L menjadi 283 mg/L, yaitu pada variasi tegangan 12V pada laju alir 0,087 L/menit sehingga menghasilkan percent removal sebesar 72,17%
Summary
Penentuan kadar COD dilakukan dengan metoda refluks tertutup sesuai SNI 6989.2:2009. Penentuan kadar BOD dilakukan sesuai SNI 6989.72:2009. Variabel Tegangan Air limbah sebanyak 5L dimasukkan ke dalam reaktor elektrokoagulasi, Mengalirkan limbah tahu dengan tegangan 8 V, dan laju alir 0,439 L/menit, 0,234 L/menit dan 0,087 L/menit. Setiap sampel diukur nilai COD, BOD, TSS dan pH menggunakan pH meter. Pada penelitian ini dilakukan dengan tegangan sebesar 8V; 10V dan 12V, pada laju alir yang bervariasi yaitu 0,087 L/menit, 0,243 L/menit dan 0,439 L/menit, sehingga masing-masing run tegangan, akan diperoleh 9 buah sampel, setelah proses elektrokuagulasi selesai. Masing-masing sampel selanjutnya dianalisis untuk menentukan kandungan COD, BOD, TSS dan pH. Untuk mengetahui perbandingan data sebelum dan sesudah ppercobaan dapat dilihat pada tabel 2
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
