Pub Date : 2021-01-19DOI: 10.30598/mjocevol11iss1pp46-54
N. Karepesina, Fitri Latukau
Penelitian ini berawal dari kenyataan di sekolah bahwa pembelajaran sering didominasikan oleh guru sebagai sumber informasi, sehingga secara tidak langsung guru dituntut untuk mengolah pembelajarannya dengan berbagai cara atau strategi. Salah satu strategi pembelajaran yang bias diterapkan oleh guru dalam mengolah pembelajarannya adalah dengan menerapkan model pembelajaran course review horay dengan menggunakan LKS dalam meningkatkan hasil bealajar siswa materi stoikiometri ( tata nama senyawa dan persamaan reaksi sederhana ) pada siswa kelas X MA Alhilaal Morella. Penelitian ini adalah penelitian deskriptif, teknik dalam penentuan sampel adalah purposive random sampling (sampel acak) sehingga yang menjadi sampel dalam penelitian adalah kelas Xa yang berjumlah 30 siswa. Pengumpulan data dalam penelitian ini adalah menggunakan tes hasil belajar berupa soal sebanyak 15 butir soal yang terbagi menjadi 10 butir soal pilihan ganda dan 5 butir soal esay. Teknik analisis hasil belajar yang dipakai adalah analisis deskriptif yang dilakukan dalam analisis hasil belajar dan dalam system penilaian, penelitian menggunakan system KKM. Dari data hasil penelitian yang diperoleh dapat disimpulkan bahwa dengan menggaplikasikan penerapan model pembelajaran course review horayterjadi peningkatan hasil belajar sebagai berikut : kualifikasi sangat baik sebesar 23% (7 siswa), kualifikasi baik sebesar 30 % (9 siswa), kualifikasi cukup sebesar 47 % (14 siswa), dan tidak ada siswa dengan kualifikasi kurang dan gagal, sehingga semua siswa dikatakan 100% tuntas.
这是从研究现实,在学校学习,经常被老师didominasikan作为信息来源,从而间接引用教师以各种方式处理的学习要求或策略。教师在准备教学过程中使用的有偏见的学习策略之一是使用LKS对X - MA - Alhilaal Morella学生的化学计量学材料(简单的化合物和反应方程)实施课程审查模式。研究测定样品中的描述性研究,技术是purposive随机抽样()这样的对照研究中,样本是随机样本的Xa共有30班的学生。本研究的数据收集是使用15个问题的研究结果测试，分成10个多项选择题和5个问题esay。采用的学习结果分析技术是描述性的学习分析，在学习分析和使用公里系统的分析中进行。获得的数据的研究与学习menggaplikasikan应用模型可以得出结论,当然horayterjadi增加学习结果如下:资格审查很好学生高达23%(7)资格,30%的学生(9)大,够资格学生高达47 %(14),没有资格的学生缺乏和失败,所有的学生都说100%完成。
{"title":"PENERAPAN MODEL PEMBELAJARAN COURSE REVIEW HORAY TERHADAP HASIL BELAJAR PADA MATERI STOIKIOMETRI ( TATA NAMA SENYAWA DAN PERSAMAAN REAKSI SEDERHANA ) UNTUK SISWA KELAS X MADRASAH ALIYAH MORELLA","authors":"N. Karepesina, Fitri Latukau","doi":"10.30598/mjocevol11iss1pp46-54","DOIUrl":"https://doi.org/10.30598/mjocevol11iss1pp46-54","url":null,"abstract":"Penelitian ini berawal dari kenyataan di sekolah bahwa pembelajaran sering didominasikan oleh guru sebagai sumber informasi, sehingga secara tidak langsung guru dituntut untuk mengolah pembelajarannya dengan berbagai cara atau strategi. Salah satu strategi pembelajaran yang bias diterapkan oleh guru dalam mengolah pembelajarannya adalah dengan menerapkan model pembelajaran course review horay dengan menggunakan LKS dalam meningkatkan hasil bealajar siswa materi stoikiometri ( tata nama senyawa dan persamaan reaksi sederhana ) pada siswa kelas X MA Alhilaal Morella. \u0000Penelitian ini adalah penelitian deskriptif, teknik dalam penentuan sampel adalah purposive random sampling (sampel acak) sehingga yang menjadi sampel dalam penelitian adalah kelas Xa yang berjumlah 30 siswa. Pengumpulan data dalam penelitian ini adalah menggunakan tes hasil belajar berupa soal sebanyak 15 butir soal yang terbagi menjadi 10 butir soal pilihan ganda dan 5 butir soal esay. Teknik analisis hasil belajar yang dipakai adalah analisis deskriptif yang dilakukan dalam analisis hasil belajar dan dalam system penilaian, penelitian menggunakan system KKM. Dari data hasil penelitian yang diperoleh dapat disimpulkan bahwa dengan menggaplikasikan penerapan model pembelajaran course review horayterjadi peningkatan hasil belajar sebagai berikut : kualifikasi sangat baik sebesar 23% (7 siswa), kualifikasi baik sebesar 30 % (9 siswa), kualifikasi cukup sebesar 47 % (14 siswa), dan tidak ada siswa dengan kualifikasi kurang dan gagal, sehingga semua siswa dikatakan 100% tuntas.","PeriodicalId":19042,"journal":{"name":"Molluca Journal of Chemistry Education (MJoCE)","volume":"96 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90635067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-07-01DOI: 10.30598/mjocevol9iss2pp116-122
A. Mariwy, Yati Tuasamu, Warinah Warinah
Merkuri dan turunannya telah lama diketahui sangat beracun sehingga kehadirannya di lingkungan perairan dapat mengakibatkan kerugian pada manusia karena sifatnya yang mudah larut dan terikat dalam jaringan tubuh organisme air. Selain itu pencemaran merkuri mempunyai pengaruh terhadap ekosistem setempat yang disebabkan sifatnya yang stabil dalam sedimen, kelarutannya yang rendah dalam air dan kemudaahannya diserap dan terakumulasi dalam jaringan tubuh organisme air, baik melalui proses bioakumulasi maupun biomagnifikasi yaitu melalui rantai makanan. Penelitian ini dilakukan untuk menentukan kadar logam berat merkuri (Hg) pada badan air dari sungai Waiapu Pulau Buru. Hal ini sangat penting dilakukan karena selama ini sungai tersebut menjadi tempat pembuangan limbah sisa pengolahan emas secara tradisional menggunakan tromol.Tahap penelitan lapangan meliputi pengukuran parameter fisika dan kimia serta pengambilan sampel dilakukan pada bulan Juli 2015. Sampel air sungai kemudian dikirim ke Laboratorium Kimia Universitas Muhamadiyah Malang untuk pengukuran kadar merkuri menggunakan AAS dengan teknik kurva kalibrasi. Hasil penelitian menunjukkan bahwa kadar merkuri pada tiga lokasi sampel yaitu A B dan C masing-masing adalah: 1,392 ppm, 1,5912 ppm dan 3,1975 ppm telah melampaui standar yang ditetapkan oleh pemerintah melalui keputusan Menteri Lingkungan Hidup RI Nomor 115 tahun 2003 yaitu ambang batas merkuri (Hg) pada air golongan C adalah 0,002 ppm.
{"title":"ANALISIS KADAR MERKURI (Hg) PADA BADAN AIR DI BEBERAPA TITIK SUNGAI WAIAPU KABUPATEN BURU","authors":"A. Mariwy, Yati Tuasamu, Warinah Warinah","doi":"10.30598/mjocevol9iss2pp116-122","DOIUrl":"https://doi.org/10.30598/mjocevol9iss2pp116-122","url":null,"abstract":"Merkuri dan turunannya telah lama diketahui sangat beracun sehingga kehadirannya di lingkungan perairan dapat mengakibatkan kerugian pada manusia karena sifatnya yang mudah larut dan terikat dalam jaringan tubuh organisme air. Selain itu pencemaran merkuri mempunyai pengaruh terhadap ekosistem setempat yang disebabkan sifatnya yang stabil dalam sedimen, kelarutannya yang rendah dalam air dan kemudaahannya diserap dan terakumulasi dalam jaringan tubuh organisme air, baik melalui proses bioakumulasi maupun biomagnifikasi yaitu melalui rantai makanan. Penelitian ini dilakukan untuk menentukan kadar logam berat merkuri (Hg) pada badan air dari sungai Waiapu Pulau Buru. Hal ini sangat penting dilakukan karena selama ini sungai tersebut menjadi tempat pembuangan limbah sisa pengolahan emas secara tradisional menggunakan tromol.Tahap penelitan lapangan meliputi pengukuran parameter fisika dan kimia serta pengambilan sampel dilakukan pada bulan Juli 2015. Sampel air sungai kemudian dikirim ke Laboratorium Kimia Universitas Muhamadiyah Malang untuk pengukuran kadar merkuri menggunakan AAS dengan teknik kurva kalibrasi. Hasil penelitian menunjukkan bahwa kadar merkuri pada tiga lokasi sampel yaitu A B dan C masing-masing adalah: 1,392 ppm, 1,5912 ppm dan 3,1975 ppm telah melampaui standar yang ditetapkan oleh pemerintah melalui keputusan Menteri Lingkungan Hidup RI Nomor 115 tahun 2003 yaitu ambang batas merkuri (Hg) pada air golongan C adalah 0,002 ppm.","PeriodicalId":19042,"journal":{"name":"Molluca Journal of Chemistry Education (MJoCE)","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90455600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-07-01DOI: 10.30598/mjocevol9iss2pp123-132
Vhindra Engson Lumamuly, Nikmans Hattu, S. Unwakoly
The aim of this study was to determine the amino acid composition of traditional processed Layang Deles fish (Decapterus macrosoma) which was stored for 2 months. Analysis of amino acid content using by Ultra Performance Liquid Chromatography (UPLC) instrument after content of water and lipid in sample was removed. The results of the analysis showed that there was a change in the concentration of 15 amino acids measured ranging from 85.17% to 2,873.42% in acid hydrolysis and 88.18% to 28.73% in alkaline hydrolysis. The biggest changes occurred in histidine, arginine and serine amino acid concentrations of 2,873.42%, 2,606.74% and 900.00% in acid hydrolysis and in amino acids serine, aspartic acid and histidine which were 88.17%, 62, 99% and 40.02% in alkaline hydrolysis. Based on the results of the research, it can be concluded that the processing of inmana fish with a storage period of 2 months affects the amino acid components of Layang Deles fish (Decapterus macrosoma).
{"title":"ANALISIS KOMPONEN ASAM AMINO IKAN LAYANG DELES (Decapterus Makrosoma) HASIL OLAHAN TRADISIONAL BERDASARKAN LAMA PENYIMPANAN","authors":"Vhindra Engson Lumamuly, Nikmans Hattu, S. Unwakoly","doi":"10.30598/mjocevol9iss2pp123-132","DOIUrl":"https://doi.org/10.30598/mjocevol9iss2pp123-132","url":null,"abstract":"The aim of this study was to determine the amino acid composition of traditional processed Layang Deles fish (Decapterus macrosoma) which was stored for 2 months. Analysis of amino acid content using by Ultra Performance Liquid Chromatography (UPLC) instrument after content of water and lipid in sample was removed. The results of the analysis showed that there was a change in the concentration of 15 amino acids measured ranging from 85.17% to 2,873.42% in acid hydrolysis and 88.18% to 28.73% in alkaline hydrolysis. The biggest changes occurred in histidine, arginine and serine amino acid concentrations of 2,873.42%, 2,606.74% and 900.00% in acid hydrolysis and in amino acids serine, aspartic acid and histidine which were 88.17%, 62, 99% and 40.02% in alkaline hydrolysis. Based on the results of the research, it can be concluded that the processing of inmana fish with a storage period of 2 months affects the amino acid components of Layang Deles fish (Decapterus macrosoma).","PeriodicalId":19042,"journal":{"name":"Molluca Journal of Chemistry Education (MJoCE)","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74313388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-07-01DOI: 10.30598/mjocevol9iss2pp109-115
Nazudin Nazudin, Hernina Wattimena
ABSTRACT The analysis of fatty acid component and mineral composition (Ca, Mg, Fe, Zn) of white snapper fish (Lates calclifer) had been done. Flesh of white snapper fish (Lates calclifer) was extracted with petroleum benzene and obtained 6.06% of oil. Oil fish was transesterified by using BF3 – methanol 20%. The result of transesterification was analysed by using and GC-MC obtained nine fatty acid component, those were myristic acid methyl ester 5.94%; pentadecanoic acid methyl ester 1,58%; palmitoleic acid methyl ester 8.73; palmi acid methyl ester 17.69; Margarate acid methyl ester 1.96%; linoleic acid methyl ester 1.56%; oleic acid methyl ester 15.83%; streaic acid methyl ester 10.41%; aracidonic acid methyl ester 5.26%. the result of minerals composition analysis used atom absorption spectrophotometer (ASS) showed that the content of calcium (Ca), Magnesium (Mg), ferrum (Fe), zinc (Zn), were 51,1 mg/kg; 574 mg/kg; 65 mg/kg; and 10,8 mg/kg, respectively. Oil of white snapper fish (Lates calcalifer) contains esensial fatty acid that is benefit to humans body. In the another hand, it also contains mineral content which is enough that it is goof to be consumend by the people.
{"title":"ANALISIS KOMPONEN ASAM LEMAK DAN MINERAL (Ca, Mg, Fe, Zn) IKAN KAKAP PUTIH (Lates calcalifer)","authors":"Nazudin Nazudin, Hernina Wattimena","doi":"10.30598/mjocevol9iss2pp109-115","DOIUrl":"https://doi.org/10.30598/mjocevol9iss2pp109-115","url":null,"abstract":"ABSTRACT \u0000The analysis of fatty acid component and mineral composition (Ca, Mg, Fe, Zn) of white snapper fish (Lates calclifer) had been done. Flesh of white snapper fish (Lates calclifer) was extracted with petroleum benzene and obtained 6.06% of oil. Oil fish was transesterified by using BF3 – methanol 20%. The result of transesterification was analysed by using and GC-MC obtained nine fatty acid component, those were myristic acid methyl ester 5.94%; pentadecanoic acid methyl ester 1,58%; palmitoleic acid methyl ester 8.73; palmi acid methyl ester 17.69; \u0000Margarate acid methyl ester 1.96%; linoleic acid methyl ester 1.56%; oleic acid methyl ester 15.83%; streaic acid methyl ester 10.41%; aracidonic acid methyl ester 5.26%. the result of minerals composition analysis used atom absorption spectrophotometer (ASS) showed that the content of calcium (Ca), Magnesium (Mg), ferrum (Fe), zinc (Zn), were 51,1 mg/kg; 574 mg/kg; 65 mg/kg; and 10,8 mg/kg, respectively. Oil of white snapper fish (Lates calcalifer) contains esensial fatty acid that is benefit to humans body. In the another hand, it also contains mineral content which is enough that it is goof to be consumend by the people.","PeriodicalId":19042,"journal":{"name":"Molluca Journal of Chemistry Education (MJoCE)","volume":"153 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78706278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-07-01DOI: 10.30598/mjocevol9iss2pp70-77
Imarsih Ninkeula, Y. T. Filindity, Y. H. Dulanlebit
Comparative study of learning media of mysterious card box with the media of snake ladder on the material of atomic structure to the result of study of class X student of SMA N 5 AMBON. The mysterious card learning media box is applied to the X class MIA1 and the ladder snake media in the X class of MIA3. From the results, the mysterious card learning media box can improve student learning outcomes, seen from the presentation of the achievement of the final test results obtained by the two classes, where the two classes have a presentation of different final result qualification ie qualification completed for class X-MIA1 which uses the mysterious card box learning medium is 100%, and no qualifying fails with an average rating of 85.68. But for the class X-MIA3 using the learning media of snake ladder with qualified thoroughly is 51.51% and qualification failed 48.49% with an average value of 72.95, therefore Mann Whitney test results using SPSS 20 obtained a significance value of 0.002 (> 0.05 ) thus H0 is rejected and H1 is received so it can be concluded that there are differences in student learning outcomes using the mysterious box learning media and learning media snake ladder
{"title":"KOMPARASI MEDIA PEMBELAJARAN KOKAMI DAN MEDIA ULAR TANGGA MENGGUNAKAN MODEL PEMBELAJARAN LANGSUNG PADA MATERI STRUKTUR ATOM TERHADAP HASIL BELAJAR SISWA KELAS X SMA NEGERI 5 AMBON","authors":"Imarsih Ninkeula, Y. T. Filindity, Y. H. Dulanlebit","doi":"10.30598/mjocevol9iss2pp70-77","DOIUrl":"https://doi.org/10.30598/mjocevol9iss2pp70-77","url":null,"abstract":"Comparative study of learning media of mysterious card box with the media of snake ladder on the material of atomic structure to the result of study of class X student of SMA N 5 AMBON. The mysterious card learning media box is applied to the X class MIA1 and the ladder snake media in the X class of MIA3. From the results, the mysterious card learning media box can improve student learning outcomes, seen from the presentation of the achievement of the final test results obtained by the two classes, where the two classes have a presentation of different final result qualification ie qualification completed for class X-MIA1 which uses the mysterious card box learning medium is 100%, and no qualifying fails with an average rating of 85.68. But for the class X-MIA3 using the learning media of snake ladder with qualified thoroughly is 51.51% and qualification failed 48.49% with an average value of 72.95, therefore Mann Whitney test results using SPSS 20 obtained a significance value of 0.002 (> 0.05 ) thus H0 is rejected and H1 is received so it can be concluded that there are differences in student learning outcomes using the mysterious box learning media and learning media snake ladder","PeriodicalId":19042,"journal":{"name":"Molluca Journal of Chemistry Education (MJoCE)","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87010386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-07-01DOI: 10.30598/mjocevol9iss2pp90-98
Noke Kesaulya, Y. T. Filindity
The Electrokinetic Remediation process for soil using 2-D hexagonal electrode has been done with observing pH and concentration of heavy metals, such as Hg, Zn and Pb of soil before, during and after processing the electrokinetic. Results of research indicated that contents of soil in Hg metal ions were 1.088 ppm; Zn =0.135 ppm and Pb, 0.115 ppm. Concentration of the metal ions was different to each time because rubbish in TPA was also different. Process efficiencies for Hg were 24.78 %; Zn, 33.71 % and Pb, 10.13 %. Efficiency process of electrokinetic remediation was highly influence by distance of cathode and duration of remediation process. Closer distance from cathode, time taken for remediation process was shorter, also the opposite
{"title":"REMEDIASI ELEKTROKINETIK TERHADAP LOGAM-LOGAM BERAT MENGGUNAKAN ELEKTRODA 2-D HEXAGONAL PADA TANAH DARI TEMPAT PEMBUANGAN AKHIR (TPA) TOISAPU AMBON","authors":"Noke Kesaulya, Y. T. Filindity","doi":"10.30598/mjocevol9iss2pp90-98","DOIUrl":"https://doi.org/10.30598/mjocevol9iss2pp90-98","url":null,"abstract":"The Electrokinetic Remediation process for soil using 2-D hexagonal electrode has been done with observing pH and concentration of heavy metals, such as Hg, Zn and Pb of soil before, during and after processing the electrokinetic. Results of research indicated that contents of soil in Hg metal ions were 1.088 ppm; Zn =0.135 ppm and Pb, 0.115 ppm. Concentration of the metal ions was different to each time because rubbish in TPA was also different. Process efficiencies for Hg were 24.78 %; Zn, 33.71 % and Pb, 10.13 %. Efficiency process of electrokinetic remediation was highly influence by distance of cathode and duration of remediation process. Closer distance from cathode, time taken for remediation process was shorter, also the opposite","PeriodicalId":19042,"journal":{"name":"Molluca Journal of Chemistry Education (MJoCE)","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75279706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-07-01DOI: 10.30598/mjocevol9iss2pp78-89
Silvia M Borolla, A. Mariwy, J. Manuhutu
Heavy metal pollution is a serious problem to environment in this time. Mercury is a dangerous wastes that make desecrate environment. So the restoration have to do to make a contaminated soil can reuse safety through fitoremediation process using Kersen. This study to analyze the reductions of heavy metal (Hg) in soil after fitoremediation process. The result of this study was showing that connections between degree reductions of heavy metal (Hg) in soil and adsorptions of Mercury (Hg) in Kersen that is concentration mercury in soil more high reductions than in the soil will following of higher Mercury concentrations in Kersen, in this study showing that adsorptions of Kersen in week – 1 after mercury treatment on a sample is in soil 6,80 ppm, root 1,14 ppm, leaf 0,86 ppm in week - 2 for soil sample is 7,31 ppm, root 3,73 ppm, leaf 4,64 ppm and for the last week in soil is 7,98 ppm, root 0,07ppm and leaf is 0,78 ppm. From that result showing Kersen (Muntingia Calabura L) is a accumulator plant and this plant can using for hyperaccumulation because the value of BCF and TF in day 14 or week – 2 is > 1.
{"title":"FITOREMEDIASI TANAH TERCEMAR LOGAM BERAT MERKURI (Hg) MENGGUNAKAN TUMBUHAN KERSEN (Muntingia Calabua L) DENGAN SISTEM REAKTOR","authors":"Silvia M Borolla, A. Mariwy, J. Manuhutu","doi":"10.30598/mjocevol9iss2pp78-89","DOIUrl":"https://doi.org/10.30598/mjocevol9iss2pp78-89","url":null,"abstract":"Heavy metal pollution is a serious problem to environment in this time. Mercury is a dangerous wastes that make desecrate environment. So the restoration have to do to make a contaminated soil can reuse safety through fitoremediation process using Kersen. This study to analyze the reductions of heavy metal (Hg) in soil after fitoremediation process. The result of this study was showing that connections between degree reductions of heavy metal (Hg) in soil and adsorptions of Mercury (Hg) in Kersen that is concentration mercury in soil more high reductions than in the soil will following of higher Mercury concentrations in Kersen, in this study showing that adsorptions of Kersen in week – 1 after mercury treatment on a sample is in soil 6,80 ppm, root 1,14 ppm, leaf 0,86 ppm in week - 2 for soil sample is 7,31 ppm, root 3,73 ppm, leaf 4,64 ppm and for the last week in soil is 7,98 ppm, root 0,07ppm and leaf is 0,78 ppm. From that result showing Kersen (Muntingia Calabura L) is a accumulator plant and this plant can using for hyperaccumulation because the value of BCF and TF in day 14 or week – 2 is > 1.","PeriodicalId":19042,"journal":{"name":"Molluca Journal of Chemistry Education (MJoCE)","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85518938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-09DOI: 10.30598/mjocevol9iss1pp9-17
Batseba Taihuttu, V. Kayadoe, A. Mariwy
Adsorption study of the adsorption of heavy metal ions from Fe (III) using sago dregs waste was carried out. adsorption was carried out in batches, with the mass of adsorbent is 1 g and the concentration of Fe (III) ion is 10 ppm. in this study variations in contact time were 60, 90, 120, 150 and 180 minutes to determine the kinetic suitable for the adsorption process of ion Fe (III) and the capacity and efficiency of sago dregs adsorption. The results showed that the adsorption of ion fe (III) using sago dregs followed pseudo second-order kinetics with R2 values that were closer to 1 that is 0,9651. adsorption of ion Fe (III) at optimum contact time of 90 minutes with adsorbent mass of 1 g obtained by adsorption capacity 0,3211 mg/g and the adsorption efficiency is 64,2%.
利用西米渣对铁(III)中的重金属离子进行了吸附研究。吸附剂质量为1 g, Fe (III)离子浓度为10 ppm，分批次吸附。本研究分别以60,90,120,150和180 min为接触时间，确定了适宜吸附Fe (III)离子的动力学过程以及西米渣的吸附量和效率。结果表明，西米渣对fe (III)离子的吸附符合准二级动力学，R2值接近1，为0,9651。吸附剂质量为1g，最佳接触时间为90min，吸附量为0,3211 mg/g，吸附效率为61.4%。
{"title":"STUDI KINETIKA ADSORPSI ION Fe (III) MENGGUNAKAN LIMBAH AMPAS SAGU","authors":"Batseba Taihuttu, V. Kayadoe, A. Mariwy","doi":"10.30598/mjocevol9iss1pp9-17","DOIUrl":"https://doi.org/10.30598/mjocevol9iss1pp9-17","url":null,"abstract":"Adsorption study of the adsorption of heavy metal ions from Fe (III) using sago dregs waste was carried out. adsorption was carried out in batches, with the mass of adsorbent is 1 g and the concentration of Fe (III) ion is 10 ppm. in this study variations in contact time were 60, 90, 120, 150 and 180 minutes to determine the kinetic suitable for the adsorption process of ion Fe (III) and the capacity and efficiency of sago dregs adsorption. The results showed that the adsorption of ion fe (III) using sago dregs followed pseudo second-order kinetics with R2 values that were closer to 1 that is 0,9651. adsorption of ion Fe (III) at optimum contact time of 90 minutes with adsorbent mass of 1 g obtained by adsorption capacity 0,3211 mg/g and the adsorption efficiency is 64,2%.","PeriodicalId":19042,"journal":{"name":"Molluca Journal of Chemistry Education (MJoCE)","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84894904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-09DOI: 10.30598/mjocevol9iss1pp60-69
F. A. Souhoka, Y. H. Dulanlebit, Ester M. C Tomasoa
This study aimed to determine phytochemical tests and antioxidant activity of fruit and peel extract of pisang jarum. Sample was extracted with 80% of ethanol, methanol, and acetone using reflux method. The result showed that pisang jarum extract contains phenols, flavonoids, and terpenoids, whereas peel extract contains phenols, flavonoids, terpenoids, alkaloids, and saponins. The total phenol content (TPC) of pisang jarum is 0.0250-0.0316 mg PE/g extract and peel is 0,1756-0,2679 mg PE/g extract. The total flavonoid content (TFC) of pisang jarum is 0.8412-1.4466 mg QE/g extract and peel is 3.2128-5.1073 mg QE/g extract. The antioxidant activity of extract were analyze by DPPH free radical scavenging activity. The antioxidant activities (IC50) of pisang jarum is 1092.92-3871.24 ppm and peel is 310.08-558.07 ppm, so it is classified as a weak antioxidant
{"title":"UJI FITOKIMIA DAN AKTIVITAS ANTIOKSIDAN EKSTRAK BUAH DAN KULIT PISANG JARUM (Musa acuminata var. Jarum (AA Group))","authors":"F. A. Souhoka, Y. H. Dulanlebit, Ester M. C Tomasoa","doi":"10.30598/mjocevol9iss1pp60-69","DOIUrl":"https://doi.org/10.30598/mjocevol9iss1pp60-69","url":null,"abstract":"This study aimed to determine phytochemical tests and antioxidant activity of fruit and peel extract of pisang jarum. Sample was extracted with 80% of ethanol, methanol, and acetone using reflux method. The result showed that pisang jarum extract contains phenols, flavonoids, and terpenoids, whereas peel extract contains phenols, flavonoids, terpenoids, alkaloids, and saponins. The total phenol content (TPC) of pisang jarum is 0.0250-0.0316 mg PE/g extract and peel is 0,1756-0,2679 mg PE/g extract. The total flavonoid content (TFC) of pisang jarum is 0.8412-1.4466 mg QE/g extract and peel is 3.2128-5.1073 mg QE/g extract. The antioxidant activity of extract were analyze by DPPH free radical scavenging activity. The antioxidant activities (IC50) of pisang jarum is 1092.92-3871.24 ppm and peel is 310.08-558.07 ppm, so it is classified as a weak antioxidant","PeriodicalId":19042,"journal":{"name":"Molluca Journal of Chemistry Education (MJoCE)","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76009231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-09DOI: 10.30598/mjocevol9iss1pp18-30
Livia Fransisca Tulus, Sunarty Sunarty, F. A. Souhoka
This research aims to determine the compounds contained in moringa leaf methanol extract by phytochemical test, values of antioxidant activity and application for coconut oil to determine peroxide value, acid value and moisture content based on oil quality according to SNI 01-374-2013. Result of phytochemical test show that Moringa leaf methanol extract contains of alkaloid, flavonoid, saponin, tannin, terpenoid and fenolik compoundsnm. Test of antioxidant activity with DPPH and measured with a UV-Vis spectrophotometer at wavelength 517 nm. Moringa leaf methanol extract has an IC50 value of 61,625% so that it is classified as strong antioxidant. The addition of moringa leaf methanol extract 5% on coconut oil after heating at time variation 15, 30, and 40 minutes showed oil quality is better than without addition of extract with peroxide value ((1,1716, 3,8378 and 6,6043 Meq/kg), acid value (0,4700, 0,5869 and 0,7024 KOH/g), and moisture content at 1% extract concentration (0,1978, 0,1290 and 0,0896 %).
{"title":"PEMANFAATAN EKSTRAK DAUN KELOR (Moringa Oleifera, Lam) SEBAGAI ANTIOKSIDAN PADA MINYAK KELAPA","authors":"Livia Fransisca Tulus, Sunarty Sunarty, F. A. Souhoka","doi":"10.30598/mjocevol9iss1pp18-30","DOIUrl":"https://doi.org/10.30598/mjocevol9iss1pp18-30","url":null,"abstract":"This research aims to determine the compounds contained in moringa leaf methanol extract by phytochemical test, values of antioxidant activity and application for coconut oil to determine peroxide value, acid value and moisture content based on oil quality according to SNI 01-374-2013. Result of phytochemical test show that Moringa leaf methanol extract contains of alkaloid, flavonoid, saponin, tannin, terpenoid and fenolik compoundsnm. Test of antioxidant activity with DPPH and measured with a UV-Vis spectrophotometer at wavelength 517 nm. Moringa leaf methanol extract has an IC50 value of 61,625% so that it is classified as strong antioxidant. The addition of moringa leaf methanol extract 5% on coconut oil after heating at time variation 15, 30, and 40 minutes showed oil quality is better than without addition of extract with peroxide value ((1,1716, 3,8378 and 6,6043 Meq/kg), acid value (0,4700, 0,5869 and 0,7024 KOH/g), and moisture content at 1% extract concentration (0,1978, 0,1290 and 0,0896 %).","PeriodicalId":19042,"journal":{"name":"Molluca Journal of Chemistry Education (MJoCE)","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77781883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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