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All Journal Jurnal Teknologi Kimia Mineral JURNAL REKAYASA KIMIA & LINGKUNGAN
Hasanah, Euis Uswatun
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Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science Materials Science & Nanotechnology

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Recent Development and Application of TiO2 Nanotubes Photocatalytic Activity for Degradation Synthetic Dyes A Review Hasanah, Euis Uswatun; Kustiningsih, Indar; Slamet, Slamet; Baig, Maughal Ahmed Ali
Jurnal Rekayasa Kimia & Lingkungan Vol 16, No 2 (2021): Jurnal Rekayasa Kimia & Lingkungan (December, 2021)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v16i2.20739

Abstract

Synthetic dyes waste from textile industries, produce of the problematic pollutants in wastewater. TiO2 based photocatalysis are materials that exhibit excellent absorption behavior for organic compounds in wastewater due it properties including nontoxicity, high photocatalysis degradation ability, and chemical stabilities. However, several challenges exist regarding TiO2 nanotubes pure applications for dyes degradation such as poor affinity, high band gap energy, and difficulty of recovery and easy to recombination so it would decrease effectiveness of the photocatalysis process. Therefore, more design and optimization testing need to be conducted on the treatment conditions in order to reach higher removal efficiencies with lower costs. The modified physical properties by adding metal dopant, nonmetal, and sensitizer significantly enhanced photocatalysis activity. These parameters, which affect photocatalysis activity on degrade dyes waste pollutants, are discussed in the current review. As a result, the photocatalysis becomes more expected, and encourages to further research development.Keywords:TiO2, nanotubes, degradation, synthetic, dyes
Sintesis Plastik Biodegradable dari Kulit Ubi Jalar dengan Penambahan Gliserol dan TiO2 Hasanah, Euis Uswatun; Elysabeth, Tiur; Dwijayanti, Aprilana; Ramadhan, Ardian Hilal; Fatar, Rendy Chanahuda
JURNAL TEKNOLOGI KIMIA MINERAL Forthcoming issue
Publisher : Politeknik ATI Makassaar

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Abstract

Sintesis plastik biodegradable berbasis pati dari kulit ubi jalar telah berhasil dilakukan dengan memanfaatkan gliserol sebagai plasticizer dan titanium dioksida (TiO₂) sebagai penguat struktur. Kulit ubi jalar dipilih karena kandungan patinya yang tinggi, mencapai sekitar 30%, serta adanya amilosa dan protein yang berkontribusi terhadap sifat biodegradasi. Pada penelitian ini digunakan variasi konsentrasi TiO₂ sebesar 0,2; 0,4; 0,6; dan 0,8;, sedangkan konsentrasi gliserol dijaga tetap sebesar 8%. Hasil sintesis menunjukkan bahwa plastik yang dihasilkan tidak rapuh, melainkan fleksibel dan elastis berkat peran gliserol. Uji biodegradasi memperlihatkan bahwa seluruh sampel mampu terurai secara signifikan dalam 12 hari, dengan persentase kehilangan massa antara 92,5% hingga 100%. Penambahan TiO₂ terbukti memperlambat laju biodegradasi, namun meningkatkan ketahanan terhadap penyerapan air. Selain itu, Hasil pengujian menunjukkan bahwa penambahan gliserol dan TiO2 berpengaruh terhadap karakteristik plastik yang dihasilkan. Nilai kuat tarik maksimal diperoleh sebesar 3,85 MPa, dan penurunan kelenturan  (elongation) sebesar  92,4%. Dengan demikian, kulit ubi jalar berpotensi menjadi bahan baku plastik biodegradable dengan karakteristik yang dapat dimodifikasi sesuai kebutuhan aplikasi.
Co-Authors Baig, Maughal Ahmed Ali Dwijayanti, Aprilana Fatar, Rendy Chanahuda Indar Kustiningsih Ramadhan, Ardian Hilal Slamet . Tiur Elysabeth