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All Journal Prosiding Seminar Nasional Sains dan Teknologi Terapan Klasikal: Journal of Education, Language Teaching and Science
Ambarwati, Diah Ayu
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Computer Science & IT Education Languange, Linguistic, Communication & Media Mathematics Other

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Penurunan Kadar Tss Dan Cod Pada Limbah Cair Industri Batik Dengan Metode Gabungan Koagulasi Dan Adsorbsi Suryanti, Tri; Ambarwati, Diah Ayu; Udyani, Kartika; Purwaningsih, Dian Yanuarita
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2019: Menuju Penerapan Teknologi Terbarukan pada Industri 4.0: Perubahan Industri dan Transformasi P
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (142.539 KB)

Abstract

Salah satu industri yang menghasilkan limbah cair adalah industri batik. Dalam limbah cair industri batikterdapat kandungan berbahaya yang menyebabkan pencemaran lingkungan seperti logam berat, sehinggaperlu diolah agar aman untuk dibuang ke lingkungan. Pengolahan limbah cair industri batik dapat dilakukandengan metode gabungan koagulasi dan adsorbsi. Tujuan dari penelitian ini adalah untuk mengetahuipengaruh penambahan koagulan biji kelor terhadap penurunan COD (Chemical Oxygen Demand) dan TSS(Total Suspended Solid). Penelitian ini dimulai dengan menentukan koagulan terbaik antara koagulan bijikelor dan ekstrak biji kelor. Setelah itu koagulan terbaik digunakan untuk proses koagulasi dengan variabel60 gr, 80 gr, 100 gr, 120 gr, dan 140 gr. Selanjutnya hasil koagulasi diadsorbsi menggunakan karbon aktifsetinggi 25 cm. Pada lapisan bawah kolom digunakan zeolit setinggi 15 cm, kemudian pada atas kolom diisiijuk 15 cm. Setelah adsorbsi selesai sampel limbah yang sudah di-treatment kemudian diuji COD dan TSS.Pada hasil penelitian ini didapat % removal COD dan TSS maksimal pada variabel massa koagulan 60 gr,pada variabel tersebut dihasilkan % removal COD sebesar 85,95% dan % removal TSS sebesar 81,41%
EXPLORING THE RELATIONSHIP BETWEEN EFL STUDENTS HABIT OF LISTENING SONGS ON SPOTIFY AND THEIR VOCABULARY COMPETENCE Ambarwati, Diah Ayu; Komara, Cahya
KLASIKAL : JOURNAL OF EDUCATION, LANGUAGE TEACHING AND SCIENCE Vol 7 No 2 (2025): Klasikal: Journal of Education, Language Teaching and Science
Publisher : Fakultas Keguruan dan Ilmu Pendidikan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52208/klasikal.v7i2.1337

Abstract

Listening to songs has been long used by teachers in Indonesia as a part of English learning activities inside or outside the classroom in Indonesia. The goals are not just for leisure purposes but to develop students' English skills and sub-skills, for example, listening or vocabulary. The Indonesian EFL students generally like this activity, whereas many are accustomed to listening to songs as part of their daily habits. Apparently, listening to songs' habits today has been much easier since the emergence of Spotify's music application. This app is becoming more popular and is used by many EFL students in Indonesia. Some studies have exposed the benefits of listening to songs through this Spotify application to enrich the student's vocabulary knowledge or size. However, further investigation is still required to determine whether the variable of listening to song habits on this Spotify platform correlates with students' vocabulary competence. Based on that interest, this study seeks the relevance between these two variables using a quantitative correlational method. 26 students from a private high school in Depok, Indonesia were selected to participate in this study. The questionnaire instrument and vocabulary test were used in this study. The result showed a positive correlation between the two variables. Therefore, listening to English songs on Spotify has become a factor that influences students' vocabulary competence.
Co-Authors Cahya Komara Dian Yanuarita Purwaningsih Kartika Udyani Tri Suryanti