Articles
<![CDATA[Kemampuan Adsorpsi Zeolit Alam Terimpregnasi Asam Lemak Hidroksamat sebagai Agen Pengkelat Ion Logam Tembaga ]]>
<![CDATA[Muhsinun Muhsinun]]>;
<![CDATA[Fena Prayunisa]]>
<![CDATA[ Al-Kimia Vol 9 No 2 (2021): DESEMBER ]]>
Publisher : <![CDATA[Study Program of Chemistry - Alauddin State Islamic University of Makassar ]]>
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DOI: 10.24252/al-kimia.v9i2.23993
<![CDATA[One of the way to recycle heavy metals in the prevention of environmental pollution is by using a solid-liquid extraction method through the impregnation mechanism of chelating agent in the adsorbent to increase its ability to bind heavy metal ions. In this study, the impregnation of fatty hydroxamic acids (FHA) successfully carried out on active natural zeolite (ZAA). This is has been done to increase the maximum adsorption capacity of ZAA towards heavy metals. The purpose of this study was to examine the adsorption ability of FHA impregnated onto ZAA as a chelating agent in copper metal ions by using column chromatography. This column contains FHA, which synthesized from crude rice bran oil and impregnated onto ZAA. There are several parameters were investigated, they are, the effect of FHA concentration, mass of FHA-ZAA resin and pH of the metal ion sample. From this study, the concentration of FHA impregnated on the zeolite surface reached 41.60%. The optimum conditions for Cu(II) adsorption by FHA-ZAA were as follows: mass ratio of FHA-ZAA resin with Cu(II) concentration (g : ppm) was 1:100 and the optimum condition of Cu(II) ion was at pH 5]]>
<![CDATA[Optimasi Sintesis Asam Lemak Hidroksamat Menggunakan Minyak Mentah Dedak Padi ]]>
<![CDATA[Muhsinun Muhsinun]]>;
<![CDATA[Fena Prayunisa]]>
<![CDATA[ JURNAL KIMIA MULAWARMAN Vol 18 No 1 (2020) ]]>
Publisher : <![CDATA[Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman ]]>
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DOI: 10.30872/jkm.v18i1.958
<![CDATA[Asam lemak hidroksamat (Fatty Hydroxamic Acids/FHA) telah berhasil di sintesis dari minyak mentah dedak padi. Adapun tujuan dari penelitian ini adalah sintesis asam lemak hidroksamat dari minyak mentah dedak padi secara enzimatis dan menentukan kondisi optimumnya, yang meliputi tiga tahap pengerjaan yaitu tahap preparasi minyak, tahap optimasi sintesis dan tahap karakterisasi. Pada tahap preparasi minyak diperoleh rendemen minyak mentah dedak padi sebanyak 23%. Pada tahap optimasi didapatkan kondisi optimum untuk sintesis asam lemak hidroksamat dari minyak mentah dedak padi adalah pada suhu 35oC selama 25 jam dengan perbandingan lipase (gram) : hidroksilamin (mmol) sama dengan 1 : 500 dan perbandingan enzim lipase (gram) : minyak mentah dedak padi (gram) sama dengan 1 : 75. Jumlah gugus asam hidroksamat dalam 1 gram sampel kering asam lemak hidroksamat adalah 2,98 mmol. Berdasarkan hasil analisis uji warna dengan Cu(II) dan Fe(III) didapatkan warna kompleks yang khas untuk kedua logam tersebut dengan asam lemak hidroksamat yaitu warna hijau dan merah tua. Sedangkan dari analisis FTIR, didapatkan spektrum gugus fungsi asam hidroksamat.]]>
<![CDATA[PENGARUH METODE PEMBELAJARAN PROBLEM SOLVING DILENGKAPI DENGAN MEDIA ANDROID TERHADAP HASIL BELAJAR KIMIA SISWA KELAS X IPA SMA MUHAMMADIYAH MASBAGIK ]]>
<![CDATA[Fena Prayunisa]]>;
<![CDATA[Muhsinun Muhsinun]]>
<![CDATA[ JURNAL ILMIAH GLOBAL EDUCATION Vol. 2 No. 1 (2021): JURNAL ILMIAH GLOBAL EDUCATION, Volume 2 Nomor 1, Juni 2021 ]]>
Publisher : <![CDATA[LPPM Institut Pendidikan Nusantara Global ]]>
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DOI: 10.55681/jige.v2i1.98
<![CDATA[This study aims to determine the effect of the problem solving learning model equipped with android media on the chemistry learning outcomes of class X science students at SMA Muhammadiyah Masbagik. This research is a quasi-experimental study (pretest-posttest Control Group Design which aims to determine the effect of the application of problem solving learning models equipped with android media on the learning outcomes of students in class X IPA SMA Muhammadiyah Masbagik. The learning model applied in the experimental class is a problem solving learning model equipped with android media, while the learning model applied in the control class is a conventional learning model.The pretest results obtained in the experimental class by applying the Problem Solving learning model assisted by android media obtained an average value of 30.5 while the pretest value in the control class obtained an average value – an average of 35. Meanwhile, the posttest score in the experimental class by applying creative problem solving models obtained an average value of 80.25, while in the control class by applying the direct learning model the average value was obtained. ta is 67.5. This shows that the problem solving learning model assisted by android media is better than the conventional learning model.]]>
<![CDATA[PENGARUH MODEL PEMBELAJARAN KOOPERATIF TIPE JIGSAW TERHADAP HASIL BELAJAR KIMIA SISWA KELAS X SMAN 1 SURALAGA MATERI POKOK STOIKIOMETRI TAHUN PELAJARAN 2021/2022 ]]>
<![CDATA[Fena Prayunisa]]>;
<![CDATA[Muhsinun Muhsinun]]>
<![CDATA[ JURNAL ILMIAH GLOBAL EDUCATION Vol. 2 No. 2 (2021): JURNAL ILMIAH GLOBAL EDUCATION, Volume 2 Nomor 2, Desember 2021 ]]>
Publisher : <![CDATA[LPPM Institut Pendidikan Nusantara Global ]]>
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DOI: 10.55681/jige.v2i2.126
<![CDATA[The purpose of this study is to investigate what affects the quality of education, one of the determining factors is quality assurance both internally and externally in educational institutions because educational institutions have a very central position in printing the nation's next generations, for that the role of educational institutions here In addition to being one of the mediators in producing the nation's generation, the success of the institution also cannot be separated from several aspects that support the institution to become a quality institution, such as the role of society, the role of parents of students, the government, students who are external aspects of the institution, while the internal aspects are here. which includes the organization of these institutions, such as school principals, teachers, staff (office boys) cleaning service, janitorial waiters and other components]]>
<![CDATA[Pemisahan Ion Tembaga Pada Limbah Pengolahan Emas Tradisonal Menggunakan Asam Lemak Hidroksamat Dari Minyak Kelapa ]]>
<![CDATA[Muhsinun Muhsinun]]>
<![CDATA[ JISIP: Jurnal Ilmu Sosial dan Pendidikan Vol 4, No 3 (2020): JISIP (Jurnal Ilmu Sosial dan Pendidikan) ]]>
Publisher : <![CDATA[Mandala ]]>
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DOI: 10.36312/jisip.v4i3.1189
<![CDATA[Dalam limbah pengolahan emas tradisional memungkinkan terdapatnya penumpukan logam-logam khususnya logam Cu, sehingga diperlukan suatu metode pemisahan dan perolehan kembali pada kondisi lingkungan tersebut guna mengurangi bahaya yang disebabkan oleh salah satu logam berat ini. Telah dilakukan penelitian tentang pemisahan ion logam tembaga dari logam lainnya dengan metode ekstraksi padat-cair menggunakan kromatografi kolom. Kolom ini mengandung asam lemak hidroksamat (FHA) yang di sintesis dari minyak kelapa dan telah diimmobilisasi ke dalam resin Amberlite XAD-4. Adapun beberapa parameter yang diteliti, yaitu pengaruh konsentrasi FHA, massa resin Amberlite XAD-4 dan pH larutan sampel. Dari penelitian ini diperoleh perbandingan kondisi optimum untuk pemisahan logam Cu adalah sebagai berikut: konsentrasi FHA 50 ppm; 0,5 gram resin Amberlite XAD-4; larutan ion logam Cu pada pH 5. Untuk pemisahan logam Cu (II) dari beberapa logam lainnya seperti Zn (II), Pb (II) dan Cd (II) telah berhasil dilakukan pada pH 5 dan diperoleh besarnya serapan logam Cu (II) dalam resin sebesar 6,26 mg/g.]]>
<![CDATA[ANALISIS PEMBUATAN ASAM LEMAK HIDROKSAMAT DARI MINYAK KELAPA MELALUI METODE ENZIMATIS ]]>
<![CDATA[Muhsinun Muhsinun]]>
<![CDATA[ JUPE : Jurnal Pendidikan Mandala Vol 4, No 4 (2019) ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pendidikan Mandala ]]>
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DOI: 10.36312/jupe.v4i4.1308
<![CDATA[Secara umum, asam lemak hidroksamat (Fatty Hydroxamic Acids/FHA) di sintesis dari bahan dasar yang mengandung asam lemak. Salah satu sumber asam lemak adalah minyak kelapa. Minyak kelapa mengandung asam lemak dengan rantai sedang dan panjang sehingga memiliki potensi yang sangat besar sebagai bahan baku sintesis asam lemak hidroksamat. Adapun tujuan dari penelitian ini adalah untuk mensintesis FHA dari minyak kelapa secara enzimatis dan mengetahui jumlah produk FHA yang dihasilkan. Metode yang digunakan adalah metode enzimatis yang meliputi beberapa tahap pengerjaan yaitu tahap sintesis, tahap perbanyakan, dan tahap pemurnian. Dari hasil penelitian, diperoleh persentase hasil sintesis asam lemak hidroksamat dari minyak kelapa setelah dilakukan perbanyakan dengan menggunakan kondisi sintesisnya adalah sekitar 48,58%. Jumlah gugus asam hidroksamat dalam 1 gram sampel kering asam lemak hidroksamat adalah 2,97 mmol.Jadi dari kedua hasil tersebut di atas, disimpulkan bahwa asam lemak hidroksamat dapat disintesis dari minyak kelapa.]]>
<![CDATA[Analisis Pembuatan Asam Lemak Hidroksamat Dari Minyak Kelapa Melalui Metode Enzimatis ]]>
<![CDATA[Muhsinun Muhsinun]]>
<![CDATA[ JUPE : Jurnal Pendidikan Mandala Vol 4, No 4 (2019) ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pendidikan Mandala ]]>
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DOI: 10.36312/jupe.v4i4.1250
<![CDATA[Generally, fatty hydroxamic acids (FHA) are synthesized from basic ingredients containing fatty acids.Fatty acids can be obtained from coconut oil among several other sources. Coconut oil contains fatty acids with medium and long chains so it has enormous potential as a raw material for the synthesis of hydroxamic fatty acids. The purpose of this research is to synthesize FHA from coconut oil enzymatically and determine the amount of FHA products produced. The method used is the enzymatic method which includes several stages of work, namely the synthesis stage, the multiplication stage, and the purification stage. From the research results, the percentage obtained from the synthesis was around 48.58% of hydroxamic fatty acids from coconut oil after propagation using the synthesis conditions.The number of hydroxamic acid groups in 1 gram of dry hydroxamic fatty acid sample was 2.97 mmol. Thus, from the two results mentioned above, it was concluded that hydroxamic fatty acids can be synthesized from coconut oil]]>
<![CDATA[Pengembangan Petunjuk Praktium IPA Alternatif Berpendekatan Saintifik untuk Meningkatkan Kemampuan Berpikir Kritis Siswa SMP ]]>
<![CDATA[Mulia Rasyidi]]>;
<![CDATA[Muhsinun Muhsinun]]>
<![CDATA[ Jurnal Ilmiah Wahana Pendidikan Vol 6 No 4 (2020): JURNAL ILMIAH WAHANA PENDIDIKAN ]]>
Publisher : <![CDATA[Peneliti.net ]]>
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DOI: 10.5281/zenodo.4302167
<![CDATA[Learning in schools is influenced by the development of the applicable curriculum. Currently education in Indonesia applies the 2013 curriculum which uses a scientific approach. His special interest in science subjects at SMP One of the supporters of the realization of a good learning process is to use the media practicum manuals, but often science practicum manuals use tools and materials that cannot be reached by the school so that practicum activities are not carried out optimally. Therefore it is necessary to develop alternative science practical instructions with a scientific approach that can facilitate learning in schools, especially in science subjects. The purpose of this study was to determine the feasibility and effectiveness of alternative science practical instructions with a scientific approach on critical thinking skills. This research is a Research and Development research. The results showed that the alternative science practicum guidelines developed were feasible and effective for students' critical thinking skills. This can be seen from the average score of the acquisition of the validation assessment from expert validation reaching 71.21 valid with good criteria, an increase in students' critical thinking skills using the N-Gain formula of 0.72. Based on the data and research results, it can be concluded that the alternative science practicum instructions with a scientific approach are feasible and effective for students' critical thinking skills]]>
<![CDATA[KARAKTERISASI ASAM LEMAK HIDROKSAMAT DARI MINYAK KELAPA ]]>
<![CDATA[Muhsinun]]>
<![CDATA[ JURNAL SANGKAREANG MATARAM Vol. 5 No. 3 (2019): September 2019 ]]>
Publisher : <![CDATA[SANGKAREANG ]]>
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<![CDATA[Asam lemak hidroksamat (FHA) mempunyai banyak manfaat dan merupakan senyawa yang bernilai ekonomis tinggi. Kompleksnya dengan beberapa ion logam telah digunakan dalam kimia analitik sebagai reagen untuk gravimetri, spektrofotometri logam, pengkhelat untuk mineral bumi yang langka dan untuk pengekstrak ion-ion logam dari fase air. Oleh sebab itu, sangat perlu dilakukan sintesis FHA dengan bahan dasar yang mengandung asam lemak ini. Salah satu sumber asam lemak adalah minyak kelapa sehingga berpotensi sebagai bahan baku sintesis FHA. Tujuan dari penelitian ini, yaitu sintesis FHA dari minyak kelapa yang dilakukan dengan cara enzimatis dan karakterisasi dari FHA yang dihasilkan. Adapun tahapan penelitian meliputi tahap sintesis, tahap pemurnian dan tahap karakterisasi. Dari hasil penelitian diperoleh persentase hasil sintesis FHA dari minyak kelapa adalah 51.90%. Jumlah gugus asam hidroksamat dalam 1 gram sampel kering FHA adalah 3.04 mmol. Berdasarkan hasil analisis uji warna dengan CuSO4 dan FeCl3 didapatkan warna kompleks yang khas untuk kedua logam tersebut dengan FHA yaitu warna hijau dan merah tua. Sedangkan dari analisis FTIR, didapatkan spektrum gugus fungsi asam hidroksamat dari sampel FHA.]]>
<![CDATA[Kajian Kemampuan Adsorpsi Zeolit Alam Terimpregnasi Asam Lemak Hidroksamat sebagai Agen Pengkelat Ion Logam Tembaga ]]>
<![CDATA[Muhsinun Muhsinun]]>;
<![CDATA[Fena Prayunisa]]>
<![CDATA[ Jurnal Kimia Fullerene Vol 6 No 2 (2021): Fullerene Journal of Chemistry ]]>
Publisher : <![CDATA[Fakultas Matematika dan Ilmu Pengetahuan Alam ]]>
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DOI: 10.37033/fjc.v6i2.355
<![CDATA[One of the way to recycle heavy metals in the prevention of environmental pollution is by using a solid-liquid extraction method through the impregnation mechanism of chelating agent in the adsorbent to increase its ability to bind heavy metal ions. In this study, the impregnation of fatty hydroxamic acids (FHA) successfully carried out on active natural zeolite (ZAA). This is has been done to increase the maximum adsorption capacity of ZAA towards heavy metals. The purpose of this study was to examine the adsorption ability of FHA impregnated onto ZAA as a chelating agent in copper metal ions by using column chromatography. This column contains FHA, which synthesized from crude rice bran oil and impregnated onto ZAA. There are several parameters were investigated, they are, the effect of FHA concentration, mass of FHA-ZAA resin and pH of the metal ion sample. From this study, the concentration of FHA impregnated on the zeolite surface reached 41.60%. The optimum conditions for Cu(II) adsorption by FHA-ZAA were as follows: mass ratio of FHA-ZAA resin with Cu(II) concentration (g : ppm) was 1:100 and the optimum condition of Cu(II) ion was at pH 5.]]>
