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All Journal Jurnal Teknik Journal of Applied Science, Engineering, Technology, and Education
Kasmudin, Karim
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Pengaruh Penambahan Volume Kitosan dari Cangkang Bekicot terhadap Penurunan Kadar Tembaga Air Lindi Ifa, La; Agus, Muhhamad Awalul; Kasmudin, Karim; Artiningsih, Andi
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 18 No 2 (2019): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jt.vol18no2.93

Abstract

Penelitian ini bertujuan untuk mempelajari pengaruh penambahan volume kitosan sebagai adsorben dari cangkang bekicot (AchatinaFullica) terhadap keefektifan kitosan dalam menjerap logam tembaga (Cu) dalam air lindi. Pembuatan kitosan terdiri dari tahap deproteinasi dengan natrium hidroksida 2 N, tahap demineralisasi dengan hydrogen clorida 1 N, serta tahap deasetilasi dengan Natrium hidroksida 50%. Campuran dipanaskan dengan hot plate pada suhu 90oC selama 1 jam dan diaduk menggunakan magnetic stirrer. Larutan dipisahkan dan dikeringkan didalam oven untuk mendapatkan kitosan. Hasil analisa Fourier Transform Infra Red (FTIR) menunjukkan bahwa derajat deasitilasi kitosan adalah sebesar 89.6%. Kitosan dilarutkan dalam air untuk menghasilkan larutan dengan konsentrasi 10.000 ppm. Berbagai volume kitosan (2, 4, 6, 8 dan 10 mL) dicampurkan kedalam 1 L air lindi dan diaduk selama 15 menit. Kadar Cu pada sampel air lindi diuji menggunakan Atomic Absorption Spectrophotometric (AAS). Diperoleh hasil bahwa daya serap terhadap kadar Cu terbaik, yaitu 34,46%, adalah pada penambahan kitosan sebanyak 10 mL.
The Influence of Concentration Chitosan of A Shell Snail to Lower Levels of BOD and COD on Waste Laundry Kasmudin, Karim; Fitria, Fitria; Artiningsih, A.
Journal of Applied Science, Engineering, Technology, and Education Vol. 4 No. 1 (2022)
Publisher : Yayasan Ahmar Cendekia Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (538.704 KB) | DOI: 10.35877/454RI.asci718

Abstract

Disposal of laundry waste directly in the river is the cause of high river pollution. Laundry wastewater resulted in an increase in BOD and COD parameters so that it had a negative impact on ecosystem life. The coagulation process using chemicals can reduce BOD and COD parameters in wastewater but have negative effects on health. Chitosan from snail shells can be used as an alternative coagulant that is environmentally friendly because it contains about 70% - 80% chitin. This study aims to synthesize chitosan biocoagulants from snail shells and to test the effectiveness of snail shell chitosan in the treatment of laundry wastewater. Fourier Transform Infra-Red (FTIR) analysis showed that the deacetylation rate of chitosan obtained was 78.06%. Coagulation was carried out on wastewater using variable concentrations and stirring speed. The results showed that the optimum dose of snail shell chitosan biocoagulant was at a concentration of 0.4%. At this dose, the coagulant can bind to the most optimal contaminants so that it can reduce the BOD and COD values ​​in laundry waste and the Fast Stirring Speed ​​of 100 rpm is the optimum stirring speed because large speeds will produce excessive shear forces and prevent the desired floc arrangement.
Co-Authors Agus, Muhhamad Awalul Andi Artiningsih Artiningsih, A. Fitria Fitria La Ifa