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All Journal POSITRON Jurnal Neutrino : jurnal fisika dan aplikasinya Jurnal Fisika FLUX SEJ (Science Education Journal) Indonesian Physical Review Journal of Banua Science Education SERIBU SUNGAI: Journal of Research and Community Service International Journal of Renewable Energy Development Jurnal Pendidikan MIPA
Suryajaya Suryajaya, Suryajaya
Universitas Lambung Mangkurat
Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Social Sciences

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Journal : Indonesian Physical Review

 1 
PERFORMANCE OF ACTIVATED CARBON FROM WATER CHESTNUT (ELEOCHARIS DULCIS) as Fe ADSORBENT Safitri, Maya; Haryanti, Ninis Hadi; Suryajaya, Suryajaya; Husain, Sadang
Indonesian Physical Review Vol. 8 No. 3 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i3.483

Abstract

This research aims to investigate the performance of activated carbon from water chestnut (WC) as an Fe adsorbent on river water samples in South Kalimantan. The WC was carbonized at a temperature of 400 °C. Then the carbon was activated with two types of activators, KOH and H2SO4 solutions. The carbonization and the activation time were also varied in two different times, 1 and 2 hours. The electrical conductivity of Martapura River water was measured to investigate its condition or quality, and yielded about 0.56   or 5600 µS/cm. It is quite large compared to the standard 1000 µS/cm. After activated carbon treatment, the electrical conductivity is reduced by about 6.67 – 13.81%. For Fe adsorption, the reduction efficiency and adsorption capacity were in the range of 7.73 % – 22.94 % and 0.50 – 1.47 mg/g. The results showed that the prepared activated carbon is effective in adsorption and decreases the Fe metal content at room temperature.
GREEN SYNTHESIS OF TIO2 USING ALOE VERA FOR PHOTODEGRADATION IN SASIRANGAN WASTE Asyiah, Noor; Ahmad, Ahmad; Ananda, Tarisa; Muhaemina, Maulanie; Rosadi, Jannesa Tri; Suryajaya, Suryajaya; Safitri, Maya
Indonesian Physical Review Vol. 8 No. 1 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i1.381

Abstract

Green synthesis of TiO2 has been successfully carried out using aloe vera. Aloe vera extract was mixed with TiCl4 while heated to obtain TiO2 powder. The FTIR spectrum showed a peak at 487.67 cm-¹ corresponding to the Ti-O-Ti functional group, which indicates the formation of TiO2 particles. The XRD results showed that the TiO2 crystals were in the anatase phase. SEM images show that the particles tend to be spherical in shape as in the anatase phase. With the Scherer equation, the size of the TiO2 crystal yielded was around 2.3 nm in diameter. The UV-vis spectrophotometer results showed the blue shift of absorption peak at 368 nm or band gap energy of 3.37 eV. A thin layer of TiO2 was made by using the slip casting method. These thin films were applied to methylene blue and sasirangan waste samples for photodegradation tests. The exposure times used were 15, 30, 45, 60, and 75 minutes. The results showed photodegradation of 38.9 % and 4.5 %, respectively, for methylene blue and sasirangan waste.
Co-Authors A.A. Ketut Agung Cahyawan W Ade Agung Harnawan, Ade Agung Ahmad Ahmad Ananda, Tarisa Anggryani, Anggryani Anny Sulaswatty, Anny Arif Sholahuddin Astuti, Yanti Asyiah, Noor Ayu, Futri Darminto . Egi Agustian Erdiansyah Rezamela, Erdiansyah Fahmi Fahmi Farida, Laila Ginanjar, Awal Hafiizh Prasetia, Hafiizh Hendris Hendarsyah Kurniawan, Hendris Hendarsyah Hery Fajeriadi Husain, Sadang Ida Ayu Putu Sri Widnyani Jamilah, Nor Kurniasih, Tintin Manik, Tetti N. Manik, Tetti Novalina Maya Safitri Melani, Noor Sri Muhaemina, Maulanie Muhammad Salahuddin Muliawatiq, Muliawati Munir, M. Jiddan Mishbahul Ninis Hadi Haryanti, Ninis Hadi Nova Annisa, Nova Nur Hazizah Nurma Sari, Nurma Permitaria, Antung Putra, Edy Giri Putri, Melda Rizka Rahmat Rahmat Ramadhoni, Benni F Rosadi, Jannesa Tri Rusmansyah Rusmansyah, Rusmansyah Saputra, Yoga Sari, Putri Sembiring, Rinawati Simon Sadok Siregar, Simon Sadok Suarso, Eka Suganda, Rolly Ega Suyidno Suyidno Syahmani Syahmani Taufik Hidayat Tetti Novalina Manik Totok Wianto Yudha Irhasyuarna