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All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Teknik ITS Jurnal Kimia dan Kemasan Indonesian Journal of Chemical Science ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Indonesian Journal of Pure and Applied Chemistry Abdimas Galuh : Jurnal Pengabdian Kepada Masyarakat Jurnal Kimia dan Kemasan
Shofiyani, Anis
Department Of Chemistry Universitas Tanjungpura, Pontianak
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Nursing

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PENGARUH PENAMBAHAN ION Ca2+ PADA PENGOLAHAN AIR GAMBUT MENGGUNAKAN KOAGULAN KITOSAN (THE EFFECT OF ADDITIONAL Ca2+ IONS ON PEAT WATER TREATMENT USING CHITOSAN COAGULANT) Tassya Amalia Putri; Anis Shofiyani Anis; Titin Anita Zaharah Titin
Indonesian Journal of Pure and Applied Chemistry Vol 7, No 1 (2024)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v7i1.66688

Abstract

Peat water generally has a brownish-red color and organic matter that can pollute the environment so it is not suitable for use. This study aims to determine the effectiveness of chitosan with the addition of salts containing Ca2+ ions, namely CaCO3 and CaCl2, on reducing peat water parameters. The work procedure includes the preparation of chitosan gel and the preparation of CaCO3 and CaCl2 solutions made with concentration variations of 100, 200, 300, 400, and 500 ppm. Determination of organic substance concentration was carried out by permanganometric titration method The effectiveness of increasing pH in the presence of CaCO3 and CaCl2 salts in peat water was 7. The highest turbidity reduction efficiency after coagulation in peat water was 41.98% with the addition of CaCO3 and 37.37%, with the addition of CaCl2 occurred at a concentration of 300 ppm. The highest efficiency of color reduction after coagulation of peat water was with the addition of 60.7% CaCO3, while with the addition of CaCl2 58% occurred with the addition of 200 ppm CaCl2. The efficiency of reducing organic matter in peat water after coagulation with the addition of CaCO3 was 48.35% at a concentration of 300 ppm while with the addition of CaCl2 it was 48.35%. The addition of Ca2+ ions from CaCO3 and CaCl2 salts is considered to increase the effectiveness of chitosan as a coagulant for treating peat water.
Synthesis of Red Mud-Based SiO2 with Various NaOH Concentrations and Extraction Times Bernadeta Dwi Meilani; Anis Shofiyani; Nelly Wahyuni
Indonesian Journal of Chemical Science Vol 12 No 3 (2023)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijcs.v12i3.74613

Abstract

Red mud adalah limbah dari proses Bayer yang berpotensi menjadi polutan bagi lingkungan karena ukuran yang kecil serta memiliki sifat alkanitas yang tinggi. Red mud mengandung SiO2 sebesar 9,4 %. Penelitian ini akan mensintesis SiO2 dengan teknik refluks. Sintesis SiO2 dipengaruh oleh konsentrasi NaOH dan waktu ekstraksi (waktu refluks). Tujuan penelitian ini adalah mengetahui konsentrasi NaOH ( 2,5 M; 5 M; dan 7,5 M) dan waktu ekstraksi (2 jam, 3 jam, dan 4 jam) terhadap rendemen dan kemurnian serta karakteristik SiO2 hasil sintesis menggunakan XRF, XRD, dan PSA. Rendemen tertinggi sebesar 2,59 % pada konsentrasi NaOH 5 M dan waktu ekstraksi 2 jam. Kemurnian SiO2 tertinggi pada konsentrasi NaOH 7,5 M sebesar 47,6 % dan pada waktu ekstraksi 4 jam sebesar 48,1 %. Fasa SiO2 hasil sintesis berdasarkan analisis XRD adalah amorf dengan jenis mineral yaitu SiO2 dan Kyanite (Al2SiO5). Ukuran rata – rata partikel untuk variasi konsentrasi NaOH 2,5 M; 5 M; dan 7,5 M secara berurut adalah 371 nm, 464 nm, dan 493 nm, sedangkan untuk variasi waktu ekstraksi 2 jam, 3 jam, dan 4 jam secara berurut adalah 464 nm, 971 nm, dan 226,7 nm. Sintesis SiO2 optimum pada konsentrasi NaOH 7,5 M dan waktu ekstrasi 4 jam
Co-Authors Ajuk Sapar Andi Hairil Alimuddin Andi Hairil Alimuddin Ari Widiyantoro Bernadeta Dwi Meilani Endah Sayekti Gusrizal Gusrizal Herlinda Djohan Irsandi Dwi Oka Kurniawan Lukman Atmaja Narsito Narsito Nelly Wahyuni Nelly Wahyuni nurhayati nurhayati Nurul - Widiastuti Pendi Wahyudi Randy Yusuf Kurniawan Risya Sasri Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah Sellen Tanheitafino Sri Juari Santosa Sri Noegrohati Tassya Amalia Putri Titin Anita Zahara Titin Anita Zahara Titin Anita Zaharah