SERBUK BIJI BUAH SEMANGKA DAN PEPAYA SEBAGAI KOAGULAN ALAMI  DALAM PENJERNIHAN AIR

Adriana Anteng Anggorowati

Adriana Anteng Anggorowati Jurusan Teknik Kimia Universitas Katolik Widya Mandala Surabaya

Abstract

ABSTRAK: Proses koagulasi dalam pengolahan air limbah merupakan proses yang penting. Tujuan koagulasi yaitu untuk menghilangkan kotoran koloid sehingga turbiditas air limbah dapat berkurang. Selama ini koagulan yang dipergunakan dalam proses penjernihan adalah koagulan kimia, yang memiliki kekurangan karena dapat mengganggu kesehatan manusia. Dalam penelitian ini menggunakan bahan alami yang berasal dari tumbuh-tumbuhan sebagai koagulan yaitu biji semangka dan biji pepaya. Serbuk biji semangka dapat menurunkan turbiditas hingga 53,85 % sedangkan biji pepaya 72,31 %. Kemampuan biji pepaya untuk penurunan turbiditas lebih besar dari pada biji semangka karena kadar protein dalam biji pepaya juga lebih besar dari pada kadar protein dalam biji semangka.

ABSTRACT: The coagulation process in wastewater treatment is an important process. The purpose of coagulation is to remove colloidal impurities so that the turbidity of wastewater can be reduced. So far, the coagulants used in the purification process are chemical coagulants, which have disadvantages because they can interfere with human health. In this study, using natural ingredients derived from plants as coagulants, namely watermelon and papaya seeds. Watermelon seed powder can reduce turbidity by up to 53.85% while papaya seeds can reduce the turbidity by 72.31%. The ability of papaya seeds to reduce turbidity is greater than that of watermelon seeds because the protein content in papaya seeds is also greater than the protein content in watermelon seeds.

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References

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