Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Jurnal Kimia Khatulistiwa Pendidikan Bahasa dan Sastra
Rahmayani, Ika
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Languange, Linguistic, Communication & Media

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
KARAKTERISASI ADSORBEN KOMPOSIT SELULOSA - LIMBAH KARET ALAM UNTUK PENURUNAN KADAR COD DAN MINYAK LEMAK LCPKS Rahmayani, Ika; Zaharah, Titin Anita; Alimuddin, Andi Hairil
Jurnal Kimia Khatulistiwa Vol 8, No 3 (2020): Jurnal Kimia Khatulistiwa
Publisher : Jurnal Kimia Khatulistiwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (697.253 KB)

Abstract

Karakterisasi adsorben dilakukan terhadap produk sintesis komposit selulosa eceng gondok (Eicchornia crassipes)-limbah karet alam. Adsorben dikompositkan dengan tujuan untuk meningkatkan kinerja dari selulosa eceng gondok dan limbah karet alam sebagai adsorben untuk menurunkan kadar Chemical Oxygen Demand (COD) dan minyak lemak pada limbah cair kelapa sawit. Kondisi optimum dari adsorben dalam penurunan kadar COD dan minyak lemak dilakukan dengan variasi massa (selulosa : karet) 1:1, 1:2 dan 2:1 dan variasi waktu kontak selama 15, 30, 45, 60 dan 75 menit. Hasil karakteristisasi menggunakan spektroskopi inframerah menunjukan adanya gugus fungsi O-H dari selulosa pada bilangan gelombang 3425,58 cm-1, dan gugus C=C dari karet alam pada bilangan gelombang 1635,64 cm-1. Data ini menunjukan bahwa hasil sintesis tersebut adalah komposit selulosa-karet alam. Kondisi optimum dari adsorben untuk mengikat zat organik terjadi pada variasi massa (selulosa : karet) 1:1 dan waktu kontak selama 30 menit dengan % efisiensi adsorbsi sebesar 83%. Kondisi optimum adsorben untuk mengikat minyak lemak terjadi pada variasi massa (selulosa : karet) 1:2 dan waktu kontak selama 30 menit dengan %efisiensi adsorbsi sebesar 84%. Hasil ini menunjukan bahwa komposit selulosa – limbah karet alam dapat dijadikan adsorben untuk penurunan kadar COD dan minyak lemak pada limbah cair pabrik kelapa sawit.Kata Kunci : selulosa, eceng gondok, karet alam, komposit
Kemampuan Menulis Teks Iklan Berdasarkan Struktur dan Kaidah Kebahasaan Siswa Kelas VIII SMPN 17 Mataram Ramdhani, Suci; Nilawati Astini, Baiq; Rahmayani, Ika
Pendidikan Bahasa dan Sastra Vol 2, No 1 (2023): Pendidikan Bahasa dan Sastra
Publisher : Lembaga Penelitian dan Pendidikan (LPP) Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58258/pendibas.v2i1.6754

Abstract

The problem behind this research is that students' ability to write advertising texts is still low. This is caused by students' lack of interest in participating in learning and teachers' lack of creativity when delivering learning material, so that students experience difficulty in learning to write advertising texts. This research aims to determine students' ability to write advertising texts based on the structure and linguistic rules of class VIII students at SMPN 17 Mataram. This research uses quantitative descriptive research. The population of this research is class VIII C students of SMPN 17 Mataram. The sample in this research consisted of 20 students. Data collection uses Test/Assignment techniques and documentation techniques. Based on the results and discussion, it shows that class VIII C students at SMPN 17 Mataram based on structural aspects are in the Quite Capable (CM) category with an average score of 61. The number of students who obtained scores in the very capable category was 5 students, 2 students in the capable category, 5 students received the moderately capable category, 6 students received the less capable category, and 2 students received the incapable category. Furthermore, based on aspects of linguistic rules, it is in the Less Able (KM) category with an average score of 55.85. The number of students who obtained scores in the very capable category was 3 students. 3 students got scores in the capable category. 9 students were in the underprivileged category, and 5 students got grades in the underprivileged category.  
Co-Authors Andi Hairil Alimuddin Nilawati Astini, Baiq Ramdhani, Suci Zaharah, Titin Anita