Article Per Year (5 Year)
p-Index From 2021 - 2026
0.61
P-Index
This Author published in this journals
All Journal Jurnal Rekayasa Proses Jurnal Rekayasa Proses Abdimas Pedagogi: Jurnal Ilmiah Pengabdian kepada Masyarakat
Siti Khoirunnisa
Universitas Negeri Malang
Education Social Sciences

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Optimization of low carbon steel coating with corrosion inhibitor method based on siwalan (Borassus flabellifer) fiber extract Siti Khoirunnisa; Fawaid Syamsul Arifin; Nadia Erlina Mayangsari; Indra Setiawan; Evi Susanti
Jurnal Rekayasa Proses Vol 17, No 1 (2023)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.69851

Abstract

Siwalan fiber waste (SFW) has the potential as a source of lignin (7-25%) which is used as a green inhibitor to inhibit the corrosion rate of low carbon steel (LCS). The aims of this study were: (1) determine the optimum conditions (types of HCl and H2SO4, Cinhibitor and Cmedia, inhibition temperature, and coating time) for LCS coating process using the inhibitory method using lignin extract from SFW, and (2) knowing the resistance of LCS coated with inhibitor at optimum conditions. Empirical research through laboratory experiments explains the relation between variables by analyzing numerical data. 185g of SFW produced 52.289g (28.26%) fine brown powder. IR spectrum analysis on extract showed the wavelength was almost the same as the standard. IR spectrum analysis was also carried out on the extracted compounds that were adsorbed, and the absorption peaks confirmed the presence of lignin in the adsorbed compounds. Based on the results of the analysis of the weighing data of the specimen before and after inhibition, the inhibitor concentration of 0.2–0.3 g/L in H2SO4 at 313K is the optimum condition to suppress the corrosion rate on the surface of LCS by 76.2%.
Optimization of low carbon steel coating with corrosion inhibitor method based on siwalan (Borassus flabellifer) fiber extract Siti Khoirunnisa; Fawaid Syamsul Arifin; Nadia Erlina Mayangsari; Indra Setiawan; Evi Susanti
Jurnal Rekayasa Proses Vol 17, No 1 (2023)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.69851

Abstract

Siwalan fiber waste (SFW) has the potential as a source of lignin (7-25%) which is used as a green inhibitor to inhibit the corrosion rate of low carbon steel (LCS). The aims of this study were: (1) determine the optimum conditions (types of HCl and H2SO4, Cinhibitor and Cmedia, inhibition temperature, and coating time) for LCS coating process using the inhibitory method using lignin extract from SFW, and (2) knowing the resistance of LCS coated with inhibitor at optimum conditions. Empirical research through laboratory experiments explains the relation between variables by analyzing numerical data. 185g of SFW produced 52.289g (28.26%) fine brown powder. IR spectrum analysis on extract showed the wavelength was almost the same as the standard. IR spectrum analysis was also carried out on the extracted compounds that were adsorbed, and the absorption peaks confirmed the presence of lignin in the adsorbed compounds. Based on the results of the analysis of the weighing data of the specimen before and after inhibition, the inhibitor concentration of 0.2–0.3 g/L in H2SO4 at 313K is the optimum condition to suppress the corrosion rate on the surface of LCS by 76.2%.
Hand Sanitizer Alami Sebagai Upaya Peningkatan Personal Hygiene Warga Siti Khoirunnisa; Berlina Ayu Wijayanti; Widya Kartika Aditya; Faridatun Nafisah
Abdimas Pedagogi: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 5 No. 1 (2022)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um050v5i12022p1-9

Abstract

Pengetahuan warga mengenai virus covid-19 dalam upaya mencegah penyebaran virus corona melalui peningkatan personal hygiene masyarakat dalam menghadapi pandemi ini sangat penting. Salah satu pencegahan yang dapat dilakukan yaitu dengan menggunakan hand sanitizer. Peningkatan jumlah kebutuhan hand sanitizer di tengah pandemi Covid-19 menyebabkan ketersediaannya menjadi terbatas serta harga jualnya menjadi meningkat, oleh karena itu perlu dilakukan sosialisasi daring pembuatan hand sanitizer alami untuk memenuhi kebutuhan ketersediaan hand sanitizer. Sosialiasi daring dilakukan agar warga dapat memahami manfaat penggunaan hand sanitizer serta pembuatannya tanpa memberikan resiko terjadinya penyebaran Covid-19 melalui kerumunan dari kegiatan tersebut, hal ini dilaksanakan untuk mematuhi protokol kesehatan dalam masa pandemi ini. Sosialisasi daring dilakukan melalui pembuatan video edukasi yang kemudian disebarluaskan melalui WhatsaApp group Tim Percepatan Penanganan Covid-19 yang beranggotakan ketua RT dan perangkat kelurahan. Dari hasil tersebut, warga paham mengenai manfaat, bahan dan cara pembuatan hand sanitizer alami sehingga dapat memproduksi secara mandiri di rumah serta dapat meningkatkan standar nilai personal hygiene warga dalam upaya mencegah penyebaran virus corona.
Co-Authors Berlina Ayu Wijayanti Evi Susanti Faridatun Nafisah Fawaid Syamsul Arifin Indra Setiawan Nadia Erlina Mayangsari Widya Kartika Aditya