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All Journal Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Indonesian Journal of Chemical Science and Technology Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun Jurnal Insan Pendidikan dan Sosial Humaniora
Hafni Indriati Nasution
Universitas Negeri Medan
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Energy Health Professions Materials Science & Nanotechnology Social Sciences

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Process Treatment of Heavy Metal Waste from Various Types of Adosorbents ( clay, flay ash, and natural zeolite) : A Review Yuda Darmawan Efendi; Hafni Indriati Nasution; Siti Rahmah; Moondra Zubir
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 4, No 1 (2021): JANUARY 2021
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v4i1.23093

Abstract

Development of the industry, especially the palm oil mill industry, it will have an impact with tangible evidence that makes the environment polluted. Heavy metals will be produced from the palm oil mill industry and will pollute the environment. Zn metal is one of the heavy metal waste produced from the mustard coconut factory industry. Zn heavy metal waste will be very dangerous if it exceeds a predetermined level and will have an impact on humans, animals and the environment. One effort to reduce heavy metals using the adsorption method. Adsorption has advantages over a variety of other methods. Adsorban that is used from materials found in nature and the resulting waste can be used as an adsorbent. The type and type of adsorbent greatly affect the pH adsorption level of the Zn metal solution.
Pengabdian Kepada Masyarakat (PKM) dalam Pengolahan Air Bersih di Desa Sukajadi Feri Andi Syuhada; Ahmad Nasir Pulungan; Ani Sutiani; Hafni Indriati Nasution; Junifa Layla Sihombing; Herlinawati Herlinawati
Jurnal Pengabdian Kepada Masyarakat (JPKM) TABIKPUN Vol. 2 No. 1 (2021)
Publisher : Faculty of Mathematics and Natural Sciences - Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpkmt.v2i1.23

Abstract

Keterbatasan pasokan air bersih untuk memenuhi kebutuhan masyarakat menjadi kendala utama yang dialami warga di Desa Sukajadi. Dengan keterbatasan pengetahuan, sarana, prasarana dan ekonomi, warga terus menggunakan air yang tidak sehat untuk kebutuhan rumah tangga. Oleh karena itu, masyarakat sangat perlu diberi pengetahuan dan keterampilan pengolahan air bersih. Kegiatan pengabdian kepada masyarakat (PKM) dalam Pengolahan Air Bersih di Desa Sukajadi bertujuan untuk: 1) meningkatkan pengetahuan tentang air bersih dan budaya hidup bersih, 2) memberikan keterampilan teknologi proses pengolahan air bersih. Tujuan tersebut dicapai dengan kegiatan berupa penyuluhan, pelatihan, dan penerapan teknologi tepat guna untuk mengolah air bersih. Hasil yang dicapai adalah: 1) meningkatnya pengetahuan mitra tentang pentinganya air bersih bagi kesehatan, 2) mitra telah memiliki pengetahuan dan ketrampilan pengolahan air bersih untuk rumah tangga.
Perbedaan Hasil Belajar Kimia Siswa Berbantuan Peta Konsep dan Peta Pikiran Menggunakan CIRC Hafni Indriati Nasution; Makharany Dalimunthe; Dian Yustika Rini Nasution
Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Vol 1, No 1 (2019): APRIL 2019
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (152.664 KB) | DOI: 10.24114/jipk.v1i1.12537

Abstract

This study aims to determine the differences in the chemistry learning outcomes of students taught with the help of media Concept Maps and Mind Maps using Cooperative Integrated Reading and Composition (CIRC) learning models on colloid subject matter. The population in this study is all students of class XI MIA SMA Swasta Nusantara Lubuk Pakam in the 2017/2018 school year consisting of 3 classes. The sample used in this study was taken by random sampling of two classes. The data analysis technique is a hypothesis test, namely the two-tail t-test. Based on the results of the data requirements test, it is known that the data from the pretest and posttest in the experimental class I and experiment II are normally distributed and homogeneous. Whereas to test the hypothesis on student learning outcomes (posttest) the price -thitung <-t½ α and tcount <t ½ α (-2,2181<-2,002 and 2,2181> 2,002) and are in the critical area, then Ho is rejected Ha accepted is that there are differences in chemistry learning outcomes of students who are taught with the help of media Concept Maps and Mind Maps using Cooperative Integrated Reading and Composition (CIRC) learning models on the subject matter of colloids.
Perbedaan Hasil Belajar Kimia Siswa Berbantuan Media Macromedia Flash dan Powerpoint Menggunakan Model Pembelajaran Kooperatif Tipe Student Teams Achievement Division Pada Materi Koloid Lista Adriani; Hafni Indriati Nasution
Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Vol 1, No 2 (2019): OKTOBER 2019
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (340.857 KB) | DOI: 10.24114/jipk.v1i2.15522

Abstract

This study aims to determine differences in student chemistry learning outcomes taught by Macromedia Flash and Powerpoint media using Student Teams Achievement Division cooperative learning models on colloidal subject matter. The population in this study were all students of class XI MIA Senior High School 2 Lubuk in 2017/2018 academic year. The sample used in this study was taken by random sampling of two classes. Each class consists of 30 students. Data collection techniques namely the test method. Data analysis technique in the form of a hypothesis test is a two-party t-test. Based on the results of the data requirements test, it is known that the results of the pretest and posttest results in the experimental class I and experiment II are normally distributed and homogeneous. As for the hypothesis test on student learning outcomes (posttest) tcount> t "1" ⁄ "2" "α" table (3.41> 2.002) and are in a critical area, then Ho is rejected Ha is accepted ie there are differences in chemistry learning outcomes students who are taught by using Macromedia Flash and Powerpoint media use a cooperative learning model type Student Teams Achievement Division on colloidal subject matter.
Pengaruh Model Problem Based Learning dan Discovery Learning Berbantuan Media ISpring Presenter terhadap Hasil Belajar Masitah Salsabila; Hafni Indriati Nasution
Jurnal Insan Pendidikan dan Sosial Humaniora Vol. 1 No. 3 (2023): Agustus : Jurnal Insan Pendidikan dan Sosial Humaniora
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jipsoshum-widyakarya.v1i3.753

Abstract

This study aims to determine differences instudent learning outcomes in SMA Negeri 18 Medan. The population in this study were all Class XI IPA consisting of five classes. The sample in this study was taken randomly and selected two classes, namely Class XI IPA 1 and class XI IPA 2 was used as the experimental class 1 and 2 with the PBL and DL model. There are two instruments used in this study, namely the test instrument and the non-test instrument. The test instrument for measuring learning outcomes is in the form of multiple choice of 20 valid and reliable questions.. Data were analyzed by independent sample t test. The results showed that for the experimental class 1: learning outcomes 83.3 ± 7.8. While the experimental class 2: learning outcomes 76.0 ± 11.01. From the statistical test it was obtained sig for learning outcomes sig (0.001) < α (0.05) H0 was rejected and Ha was accepted, as well as the learning outcomes obtained value sig (0.000) < α (0.05) and sig (0.001) < α (0.05) in experimental class 1 and 2 respectively. Thus, it can be concluded that there are significant differences in learning outcomes.
Co-Authors Ahmad Nasir Pulungan Ani Sutiani Dian Yustika Rini Nasution Herlinawati Herlinawati Junifa Layla Sihombing Lista Adriani Makharany Dalimunthe Masitah Salsabila Moondra Zubir Siti Rahmah Syuhada, Feri Andi Yuda Darmawan Efendi