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All Journal International Journal of Renewable Energy Development Jurnal Sains Materi Indonesia JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Syntax Literate: Jurnal Ilmiah Indonesia Al-Ard: Jurnal Teknik Lingkungan Jurnal Riset Teknologi Pencegahan Pencemaran Industri Jurnal ComunitA Servizio International Journal of Renewable Energy Development Jurnal Sains Materi Indonesia
Ratnawati Ratnawati
Chemical Engineering Department, Institut Teknologi Indonesia Jalan Raya Puspiptek Serpong 15320, Tangerang Selatan
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Nursing Social Sciences Other

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Adsorption of Phenol and Iron In Wastewater Using a Mixture of Active Carbon and Zeolite Modified with Chitosan Ratnawati; Rian Hidayat; M. Cece Ariwirdana; Kudrat Sunandar; Wahyudin Wahyudin
Jurnal Sains Materi Indonesia Vol. 24 No. 1 (2022)
Publisher : BRIN Publishing (Penerbit BRIN)

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Abstract

Phenol (C6H5OH) and iron (Fe2+) contained in electroplating industrial wastewater are toxic even at small concentrations. One of the effective methods to remove these compounds is adsorption because the method is easy and simple. Activated carbon and zeolite are types of adsorbents that are often used in wastewater treatment, but both types of adsorbents are not selective in certain chemicals. In this study, modification of zeolite and activated carbon with chitosan was carried out to adsorb waste containing phenol and Fe2+. The variations used were pH (7 and 9) and the adsorbent composition to study its effect on the adsorption of phenol in the presence of Fe2+. Adsorption was carried out in a bed with circulating waste for 2 hours. Feed at pH 9 with adsorbent mixed of zeolite-chitosan composite (Z-Ch) and activated carbon-chitosan composite (AC-Ch) in a ratio of 1:1 gave the optimal results. Under these conditions, 94% and 97% of phenol and Fe2+ were adsorbed, respectively.
Meningkatkan Pemahaman Meningkatkan Pemahaman Siswa SMK Muhammadiyah 2 Kota Tangerang Selatan Pentingya Kemampuan Bermatematika Jika Ingin Melanjutkan Pendidikan Tinggi di Bidang Teknik Perak Samosir; Yenny Widyanti; Ratnawati; Gadih Ranti
JURNAL Comunità Servizio : Jurnal Terkait Kegiatan Pengabdian kepada Masyarakat, terkhusus bidang Teknologi, Kewirausahaan dan Sosial Kemasyarakatan Vol. 8 No. 1 (2026): APRIL
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM), Univesitas Kristen Indonesia

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Higher education in engineering is one of the most popular and sought-after majors among high school (SMA) and equivalent students such as vocational schools (SMK). Engineering majors are considered to offer good, bright, and promising prospects, including the availability of extensive job opportunities, especially in the industrial and construction sectors. However, the path to achieving this requires students to have good mathematical skills, which must be started at the latest when students are in high school/vocational school. The Community Service (PKM) activity that we conducted tried to find out how the tenth grade students of SMK Muhammadiyah 2 South Tangerang City view the subject of Mathematics. Of the 39 students, only 2 students said they liked Mathematics and 37 people gave answers that gave the impression that Mathematics is difficult and confusing. In this PKM activity, we gave 2 presentations that illustrated how Mathematics is needed in everyday life. At the end of the activity, a question and answer session was held and through the questions asked by the students, it was seen that the students gave a positive response to this activity.
Co-Authors Andri Y. Aniek S Handayani Aniek Sri Handayani Aniek Sri Handayani Annisa Nurul Syabila Athanasia Amanda Septevani E. Enjarlis Farah Diba Toya Gadih Ranti Galuh Maulidyananda Is S Purwaningsih Iyus Hendrawan Jessica Ambarwati Idat Joko Noveriarto Khadijah Khadijah kudrat sunandar Linda A. Yoshi Linda Aliffia Yoshi, Linda Aliffia M. Cece Ariwirdana Marcelinus Christwardana Muhamad Rofi Zul Qois Mutiara Eka Puspita Ni Made Sudri Perak Samosir Rian Hidayat S. Slamet Saharudin Saharudin Satrio Kuntolaksono Slamet Slamet Sudirman Sudirma Surya Aji Wibawa Wahyudin Wahyudin Yalun Arifin Yenny Widyanti Yuli Amalia Husnil Yuli Amalia Husnil Zaenal K.