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All Journal JURNAL PengaMAS Walisongo Journal of Chemistry Jurnal Pendidikan Kimia Unkhair (JPKU)
Baturante, Nur Jannah
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ANALISIS KEMAMPUAN HASIL BELAJAR SISWA KELAS XI SMA NEGERI 1 KEPULAUAN SULA PADA MATERI IKATAN KIMIA Muzdalifa, Eccy Sitti; Muliadi, Muliadi; Annisa, Dira Ayu; Sugrah, Nurfatimah; Baturante, Nur Jannah
Jurnal Pendidikan Kimia Unkhair (JPKU) Vol 4, No 2 (2024): Jurnal Pendidikan Kimia Unkhair (JPKU)
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/jpku.v4i2.9273

Abstract

AbstrakPenelitian ini dilakukan untuk mengetahui hasil belajar dan faktor-faktor yang mempengaruhi  Analisis Kemampuan Hasil Belajar Siswa Kelas XI SMA Negeri 1 Sanana Pada Materi Ikatan Kimia. Jenis penelitian adalah deskriptif kuantitatif. Populasi dalam penelitian ini adalah seluruh siswa kelas XI SMA Negri 1 Sanana yang terdiri dari 1 kelas yaitu 20 siswa dan sampel dalam penelitian ini adalah siswa kelas XI IPA 2 SMA Negeri 1 Kepulauan Sula berjumlah 30 siswa. Teknik pengambilan sampel yang digunakan adalah purposiv Sampling. Instrument penelitian ini yaitu dengan menggunakan instrument tes dan non tes, berupa soal essay yang berjumlah 10 item dan angket berjumlah 10 item. Hasil penelitian menunjukkan bahwa kemampuan hasil belajar kimia siswa kelas XI SMA Negeri 1 Kepulauan Sula pada materi ikatan kimia rata-rata kemampuan Lots siswa berada pada kategori rendah dengan presentasi 5% dan ketegori sangat rendah 95%. Dan rata-rata kemampuan Hots siswa berada pada kategori sangat rendah dengan presentasi 100%. Faktor-faktor yang mempengaruhi kemampuan hasil belajar siswa kelas XI IPA 2 SMA Negri 1 Kepulauan Sula untuk faktor internal siswa terdapat pada aspek minat motivasi, intelegens dan sikap. dengan presentase 80 % pada kategori tinggi, minat 65%, intelegensi 60%, dan sikap 65%. sedangkan untuk faktor eksternal adalah Orang tua dengan presentase 65% berada pada kategori tinggi, Guru 65%, dan sekolah 65%. AbstractThis study was conducted to determine the learning outcomes and factors that influence the Ability Analysis of Learning Outcomes of Class XI Students of SMA Negeri 1 Sanana on Chemical Bonding Material. The type of research is descriptive quantitative. The population in this study were all students of class XI SMA Negri 1 Sanana which consisted of 1 class of 20 students and the sample in this study were students of class XI IPA 2 SMA Negeri 1 Kepulauan Sula totaling 30 students. The sampling technique used was purposive sampling. This research instrument is by using test and non-test instruments, in the form of essay questions totaling 10 items and questionnaires totaling 10 items. The results showed that the ability of chemistry learning outcomes of class XI students of SMA Negeri 1 Kepulauan Sula on chemical bonding material, the average ability of students' Lots was in the low category with a presentation of 5% and a very low category of 95%. And the average student's Hots ability is in the very low category with a presentation of 100%. Factors that influence the ability of learning outcomes of students in class XI IPA 2 SMA Negri 1 Kepulauan Sula for internal factors of students are in the aspects of motivation interest, intelligence and attitude. with a percentage of 80% in the high category, interest 65%, intelligence 60%, and attitude 65%. while for external factors are parents with a percentage of 65% in the high category, teachers 65%, and schools 65%.   
PENDAMPINGAN PRAKTIKUM KIMIA VIRTUAL CHEM-LAB DAN PENYUSUNAN PANDUAN BERBASIS BAHAN LOKAL MALUKU UTARA Cipta, Indra; Baturante, Nur Jannah; Mauraji, Ilham; Embisa, Anjam Putra A.; Umahuk, Sabaria
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Publisher : LPPM UNIVERSITAS KHAIRUN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/pengamas.v7i3.8598

Abstract

Pengabdian pada masyarakat ini bertujuan untuk memberikan pendampingan kepada siswa melakukan praktikum kimia tanpa akses internet dengan menggunakan aplikasi Chemlab. Kegiatan ini dilakukan di SMAN 10 Kota Ternate. Teknologi yang digunakan dalam kegiatan pengabdian ini adalah komputer, LCD kegiatan ini dilakukan menggunakan metode pendampingan secara langsung. Instrumen yang digunakan yaitu angket respon siswa menggunakan skala 1-4. data dianalisis secara deskriptif tiap indikator. Hasil dari kegiatan ini adalah adanya transfer pengetahuan dan skill kepada siswa. Respon siswa diperoleh sebanyak 89% siswa memberikan respon setuju aplikasi chemlab dapat dijadikan media pembelajaran kimia, sebanyak 89% siswa setuju mudah mengidentifikasi bentuk dan ukuran alat praktikum, kemudahan mengambil data praktikum, serta kemudahan menganalisis hasil praktikum dengan, sebanyak 75% siswa memberikan respon setuju tidak mengalami kesulitan menggunakan chemlab, 93% siswa memberikan respon setuju jika aplikasi chemlab lebih ramah lingkungan, praktikum kimia dengan menggunakan chemlab lebih aman, sebanyak 87% siswa memberikan respon setuju jika siswa menyelesaikan praktikum dengan sukses.
Pengaruh Model Pembelajaran Inkuiri Terbimbing Terhadap Hasil Belajar Siswa Kelas Xi Pada Materi Koloid Di MAS Al- Karimah Galela Liong, Nurhaja; Sugrah, Nurfatimah; Baturante, Nur Jannah; Jayali, Ahmad Muchsin; Mauraji, Ilham SW
Jurnal Pendidikan Kimia Unkhair (JPKU) Vol 3, No 2 (2023): Jurnal Pendidikan Kimia Unkhair (JPKU)
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/jpku.v3i2.7264

Abstract

AbstrakPenelitian ini dilakukan untuk mengetahui pengaruh model pembelajaran inkuiri terbimbing terhadap hasil belajar siswa di MAS Al- Karimah Galela. Jenis penelitian yang digunakan adalah penelitian eksperimen dengan desain penelitian yaitu One Group Pretest Posttest. Populasi dalam penelitian ini adalah seluruh siswa siswi kelas XI MAS Al- Karimah Galela yang berjumlah 19 orang dengan teknik pengambilan sampel yaitu sampling jenuh. Instrumen yang digunakan dalam penelitian ini yaitu instrumen tes berupa soal essay sebanyak 10 nomor. Data yang diperoleh selanjutnya dianalisis menggunakan Uji Paired Sample Test. Hasil uji hipotesis dalam penelitian ini diperoleh nilai signifikan 0,000 atau 0,05 maka Ha diterimah dan H0 ditolak, sehingga model pembelajaran Inkuiri Terbimbing berpengaruh terhadap hasil belajar siswa, dengan besar pengaruh yang diperoleh dari uji nilai gain sebesar 0,55 dengan kategori sedang.Kata Kunci: Inkuiri Terbimbing. Hasil Belajar, KoloidAbstractThis research was conducted to determine the effect of the guided inquiry learning model on student learning outcomes at MAS Al-Karimah Galela. The type of researcher used is experimental research with a research design, namely One Group Pretest Posttest. The population in this study was all 19 class XI MAS Al-Karimah Galela students using a sampling technique, namely saturated sampling. The instrument used in this research is a test instrument in the form of 10 essay questions. The data obtained was then analyzed using the Paired Sample Test. The results of the hypothesis test in this study obtained a significant value of 0.000 or    0.05, so Ha was accepted and H0 was rejected, so that the Guided Inquiry learning model had an effect on student learning outcomes, with a large influence obtained from the gain value test of 0.55 with the category currently.Keyword: Guided  Inquiry.  Learning Outcomes, colloidal
PENGARUH MODEL PROBLEM BASED LEARNING TERHADAP KEMAMPUAN BERPIKIR KRITIS SISWA KELAS X PADA MATERI IKATAN KIMIA DI SMK NEGERI 9 KEPULAUAN SULA Daiman, Fanina; Amin, Muhammad; Mauraji, ilham SW; Zam, Zulkifli Zam; Ibrahim, Fitriana; Baturante, Nur Jannah
Jurnal Pendidikan Kimia Unkhair (JPKU) Vol 4, No 1 (2024): Jurnal Pendidikan Kimia Unkhair (JPKU)
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/jpku.v4i1.8406

Abstract

 Informasi Jurnal Kata Kunci:                Problem Based Learning, Kemampuan Berpikir Kritis, Ikatan KimiaAbstrakPenelitian ini dilakukan untuk mengetahui pengaruh model problem based learning terhadap kemampuan berpikir kritis siswa kelas X pada materi ikatan kimia di SMK Negeri 9 Kepulauan Sula. Jenis penelitian ini yang digunakan adalah penelitian eksperimen dengan desain penelitian yaitu One Group Pretest Posttest Desain. Populasi dalam penelitian ini adalah kelas X berjumlah 14 siswa teknik pengambilan sampel yaitu sampling jenuh. Instrumen yang digunakan berupa soal essay sebanyak 10 nomor. Data yang diperoleh selanjutnya dianalisis mengunakan SPSS 21.0. Hasil uji hipotesis dalam penelitian ini diperoleh dari uji Paired Sampel T Test thitungttabel atau 7,5151,770, maka Ha diterima dan H0 ditolak. Sehingga model pembelajaran peoblem based learning berpengaruh terhadap kemampuan berpikir kritis siswa dengan besar pengaruh yang diperoleh dari uji nilai sebesar 0,35 dengan kategori sedang.    Keyword:Problem Based Learning, Critical Thinking Ability, Chemical BondsAbstractThis research was conducted to determine the effect of the problem based learning model on the critical abilities of class X students on chemical bonding material at SMK Negeri 9 Sula Island. The type of research used experimental research with a research design, namely One Group Pretest Posttest Design. The population in this study was class X, totaling 14 students, the sampling technique was saturated sam pling. The instrument used is 10 essay questions. The data obtained was then analyzed using SPSS 21.0. The results of the hypothesis test in this research were obtained from the Paired Sample T Test tcount ttable or 7.5151.770, so Ha was accepted and Ho was rejected. So the problem based learning model influences students critical thinking abilities with a large influence obtained from the test value of 0.35 in the medium category..
Pengaruh Tinggi dan Diameter Cerobong Pltu Terhadap Dispersi SO2 Di Udara Menggunakan Model Gaussian Plume Baturante, Nur Jannah; Kumendong, Nurbaiti
Jurnal Pendidikan Kimia Unkhair (JPKU) Vol 2, No 1 (2022): Jurnal Pendidikan Kimia Unkhair (JPKU)
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/jpku.v2i1.4952

Abstract

AbstractGaussian plume model was used to model the SO2 dispersion of 1000 MW coal power plant. This study used two scenarios to figure out the effect of pollutant source physical condition height and diameter of stack to SO2 dispersion which result from coal burning in power plant. The result showed that the increase of sulfur in coal increase ground level concentration of SO2. Decreased of atmospheric stability, caused the increase of SO2 ground level concentration that closer to the pollutant source. Height and diameter of stack, showed similar effect. Sulfur dioxide ground level concentration decrease and occured closer to the pollutant source, caused by  the increase of those parameters. The lowest SO2 ground level concentration resulted from high stack 275 m, with MGLCs 106,55 μg/m3, and diameter 8,75 m; with MGLCs 112,15 μg/m3, which has exceeded the threshold and gave negative effects on human and the environment.Kata Kunci :        Gaussian Plume, Coal power plant, Dispersion model, SO2 concentration
Analisis Kadar NO2 dalam Kangkung Air (Ipomoea aquatica Forsk) dan Kangkung Darat (Ipomoea reptans Poir) Asal Kelurahan Gambesi Kota Ternate Anisa, Nur; Amin, Muhammad; Muin, Fadlan; Baturante, Nur Jannah; Puspitasar, Setyani Dian; Kusuma, Anggieta Pahmawati; Ariyana, Muto'ah Intan
Jurnal Pendidikan Kimia Unkhair (JPKU) Vol 3, No 1 (2023): Jurnal Pendidikan Kimia Unkhair (JPKU)
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/jpku.v3i1.6409

Abstract

AbstrakTujuan penelitian ini untuk mengetahui kadar NO2 dalam kangkung air (Ipomoea aquatica Forsk) dan Kangkung Darat (Ipomoea reptans Poir) asal Kelurahan Gambesi, Kota Ternate. Sampel yang dianalisis adalah bagian batang dan daun dari Kangkung Air dan Kangkung, penetapan kadar NO2 dengan menggunakan pereaksi asam sulfanilat dan N(1-Naftil) etilendiamin dihydrochloride. Kemudian kadar NO2 diukur dengan spektrofotometri UV-Vis pada panjang gelombang 542 nm. Hasil dari penelitian ini menunjukan bahwa kadar NO2 tertinggi terdapat pada kangkung darat pada bagian daun yaitu 13,79375 mg/kg sedangkan kadar NO2 terendah terdapat pada Kangkung Air bagian batang yaitu 1,0189 mg/kg.Kata Kunci: NO2, Kangkung air dan kangkung darat, spektrofotometri UV-Vis AbstractThe purpose of this study was to determine NO2 levels in water spinach (Ipomoea aquatica Forsk) and water spinach (Ipomoea reptans Poir) from Gambesi Village, Ternate City. The samples analyzed were the stems and leaves of water spinach and water spinach, determination of NO2 levels using sulfanilic acid and N(1-naphthyl) ethylenediamine dihydrochloride reagents. Then NO2 levels were measured by UV-Vis spectrophotometry at a wavelength of 542 nm. The results of this study showed that the highest NO2 levels were found in ground kale on the leaves, namely 13.79375 mg/kg, while the lowest NO2 levels were found in water spinach stems, namely 1.0189 mg/kg.Keyword:NO2, Ipomoea reptans poir, Ipomoea aquatica forsk, UV-Vis spectrophotometry
ANALISIS KEMAMPUAN HASIL BELAJAR SISWA KELAS XI SMA NEGERI 1 KEPULAUAN SULA PADA MATERI IKATAN KIMIA Muzdalifa, Eccy Sitti; Muliadi, Muliadi; Annisa, Dira Ayu; Sugrah, Nurfatimah; Baturante, Nur Jannah
Jurnal Pendidikan Kimia Unkhair (JPKU) Vol 4, No 2 (2024): Jurnal Pendidikan Kimia Unkhair (JPKU)
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/jpku.v4i2.9273

Abstract

AbstrakPenelitian ini dilakukan untuk mengetahui hasil belajar dan faktor-faktor yang mempengaruhi  Analisis Kemampuan Hasil Belajar Siswa Kelas XI SMA Negeri 1 Sanana Pada Materi Ikatan Kimia. Jenis penelitian adalah deskriptif kuantitatif. Populasi dalam penelitian ini adalah seluruh siswa kelas XI SMA Negri 1 Sanana yang terdiri dari 1 kelas yaitu 20 siswa dan sampel dalam penelitian ini adalah siswa kelas XI IPA 2 SMA Negeri 1 Kepulauan Sula berjumlah 30 siswa. Teknik pengambilan sampel yang digunakan adalah purposiv Sampling. Instrument penelitian ini yaitu dengan menggunakan instrument tes dan non tes, berupa soal essay yang berjumlah 10 item dan angket berjumlah 10 item. Hasil penelitian menunjukkan bahwa kemampuan hasil belajar kimia siswa kelas XI SMA Negeri 1 Kepulauan Sula pada materi ikatan kimia rata-rata kemampuan Lots siswa berada pada kategori rendah dengan presentasi 5% dan ketegori sangat rendah 95%. Dan rata-rata kemampuan Hots siswa berada pada kategori sangat rendah dengan presentasi 100%. Faktor-faktor yang mempengaruhi kemampuan hasil belajar siswa kelas XI IPA 2 SMA Negri 1 Kepulauan Sula untuk faktor internal siswa terdapat pada aspek minat motivasi, intelegens dan sikap. dengan presentase 80 % pada kategori tinggi, minat 65%, intelegensi 60%, dan sikap 65%. sedangkan untuk faktor eksternal adalah Orang tua dengan presentase 65% berada pada kategori tinggi, Guru 65%, dan sekolah 65%. AbstractThis study was conducted to determine the learning outcomes and factors that influence the Ability Analysis of Learning Outcomes of Class XI Students of SMA Negeri 1 Sanana on Chemical Bonding Material. The type of research is descriptive quantitative. The population in this study were all students of class XI SMA Negri 1 Sanana which consisted of 1 class of 20 students and the sample in this study were students of class XI IPA 2 SMA Negeri 1 Kepulauan Sula totaling 30 students. The sampling technique used was purposive sampling. This research instrument is by using test and non-test instruments, in the form of essay questions totaling 10 items and questionnaires totaling 10 items. The results showed that the ability of chemistry learning outcomes of class XI students of SMA Negeri 1 Kepulauan Sula on chemical bonding material, the average ability of students' Lots was in the low category with a presentation of 5% and a very low category of 95%. And the average student's Hots ability is in the very low category with a presentation of 100%. Factors that influence the ability of learning outcomes of students in class XI IPA 2 SMA Negri 1 Kepulauan Sula for internal factors of students are in the aspects of motivation interest, intelligence and attitude. with a percentage of 80% in the high category, interest 65%, intelligence 60%, and attitude 65%. while for external factors are parents with a percentage of 65% in the high category, teachers 65%, and schools 65%.   
Pengaruh Model Problem Based Learning Terhadap Hasil Belajar Siswa Kelas XI Pada Materi Sistem Koloid Di MAS Al-Muzakarah Toniku Muhdar, Sri Arlika; Sugrah, Nurfatimah; Muin, Fadlan; -, Muliadi; Limatahu, Nur Asbirayani; Baturante, Nur Jannah
Jurnal Pendidikan Kimia Unkhair (JPKU) Vol 3, No 2 (2023): Jurnal Pendidikan Kimia Unkhair (JPKU)
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/jpku.v3i2.7248

Abstract

AbstrakPenelitian ini dilakukan untuk mengetahui pengaruh model problem based learning terhadap hasil belajar siswa kelas XI pada materi sistem koloid di MAS Al-Muzakarah Toniku. Jenis penelitian ini adalah penelitian eksperimen menggunakan desain one group pretest posttest. Sampel dalam penelitian ini adalah seluruh siswa kelas XI IPA MAS Al-Muzakarah Toniku tahun ajaran 2022/2023 yang berjumblah 15 siswa yang terdiri hanya satu kelas. Teknik pengambilan sampel digunakan ialah sampling jenuh. Instrumen yang digunakan dalam penelitian ini berupa soal essay sebanyak 10 item yang digunakan untuk mengukur hasil belajar siswa, dan lembar observasi untuk mengukur ranah afektif dan psikomotorik. Teknik analisis data data statistik menggunakan Paired Sampel t test dengan nilai sig 0,05 atau 0,00 0,05, maka Ha diterima dan H0 di tolak. Hasil ranah afektif sebanyak 53 dengan kategori kurang dan ranah psikomotor sebanyak 52 dengan kategori kurang. Besar pengaruh model problem based learning terhadap hasil belajar siswa diperoleh dari nilai gain 0,49 dengan kategori sedang.Kata Kunci: Problem  Based   Learning, Hasil Belajar, Sistem KoloidAbstract This research was conducted to determine the effect of the problem based learning model on the learning outcomes of class XI students on colloidal system material at MAS Al-Muzakarah Toniku. This type of research is experimental research using one grup pretest posttest design. The sample in class XI IPA MAS Al- Muzakarah Toniku for the 2022/2023 academic year, with a total of 15 students consisting of only one class. The sampling technique used is the saturation. The instruments used in this study were essay questions of 10 items used to measure student learnig outcomes, and observation sheets to measure affective and psychomotor domains. Statistical data analysis techniques using paired sample t test with values sig 0.05 or 0.00 0.05, then Ha is accepted and H0 is rejected. The results of the affective domain were 53 in the less category. The influence of the problem based learning model on student learning outcomes is obtained from a gain value of 0,49 in the moderate category.Keyword: Problem Based Leaning, Learning Outcomes, Colloidal System
PENGEMBANGAN E-LKPD BERBASIS LEARNING CYCLE 5E PADA MATERI PEMBUATAN INDIKATOR DAN PENENTUAN TRAYEK pH ASAM BASA BERBAHAN ALAM Moligai, Nursafina Banse; Annisa, Dira Ayu; Baturante, Nur Jannah; Nur Abu, St Hayatun
Jurnal Pendidikan Kimia Unkhair (JPKU) Vol 5, No 1 (2025): Vol 5, No 1 (2025): Jurnal Pendidikan Kimia Unkhair (JPKU)
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/jpku.v5i1.10004

Abstract

AbstrakPenelitian ini bertujuan untuk menguji kelayakan serta kepraktisan e-LKPD berbasis Learning Cycle 5E pada materi pembuatan indikator dan penentuan trayek pH asam-basa berbahan alam. Hasil validasi menunjukkan bahwa produk yang dikembangkan memenuhi kriteria kelayakan dengan kategori sangat valid, dengan nilai rata-rata 86%. Uji kepraktisan berdasarkan angket respon guru dan siswa juga menunjukkan hasil sangat praktis, dengan nilai rata-rata 88% dari guru dan 85% dari siswa. Dengan demikian, e-LKPD berbasis Learning Cycle 5E yang dikembangkan layak digunakan sebagai bahan ajar dalam pembelajaran kimia, khususnya pada materi pembuatan indikator dan penentuan trayek pH asam-basa berbahan alam. Kata Kunci:               e-LKPD, Learning Cycle 5E, asam-basa, indikator alami, pembelajaran kimiaAbstractThis study aims to develop and test the feasibility and practicality of e-LKPD based on Learning Cycle 5E on the material for making indicators and determining the pH route of acids and bases made of natural materials. The validation results show that the product developed meets the eligibility criteria with a very valid category, with gives an average score of 86%. The practicality test based on the teacher and student response questionnaire also showed very practical results, with an average score of 88% from teachers and 85% from students. Thus, the e-LKPD based on Learning Cycle 5E developed is suitable for use as a teaching material in chemistry learning, especially in the material for making indicators and determining the pH route of acids and bases made of natural materials.e-LKPD, Learning Cycle 5E, acid-base, natural indicators, chemistry learning
ADSORPTION KINETICS OF METHYL ORANGE ON SILICA DERIVED FROM GAMALAMA VOLCANIC SOIL Cipta, Indra; Baturante, Nur Jannah; Hernawan, Hernawan; Rombe, Yunita Pare; Mahmudha, Siti
Walisongo Journal of Chemistry Vol. 8 No. 1 (2025): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v8i1.26066

Abstract

Silica gel was successfully synthesized from Gamalama volcanic soil using the sol-gel method and applied as an adsorbent to remove methyl orange (MO) dye. The synthesis process involved treating 20 grams of volcanic soil with 2 M HCl under stirring for 3 hours, followed by a 12-hour soaking period. The solid residue was subsequently filtered, dried, and reacted with 7 M NaOH for 2 hours. The resulting filtrate was neutralized through repeated washing with distilled water, and silica gel formation was achieved by titration with 2 M HCl until a final pH of approximately 3–4 was reached. The synthesized silica was evaluated for its adsorption performance against methyl orange, with optimal conditions identified at pH 4, a contact time of 5 hours, and an adsorbent dosage of 30 mg. UV-Vis analysis showed that the synthesized silica exhibited a higher adsorption capacity (6.7%) compared to raw Gamalama volcanic soil. Kinetic studies indicated that the adsorption process followed a pseudo-second-order model, suggesting chemisorption as the dominant mechanism. The rate constant (k₂) for the synthesized silica was 0.09 M⁻¹·h⁻¹, compared to 0.077 M⁻¹·h⁻¹ for the raw volcanic soil. This indicates that the synthesized silica adsorbed MO more rapidly, likely due to its higher purity and greater availability of active sites. The slightly lower k₂ observed in raw volcanic soil might be attributed to the presence of clay minerals such as halloysite and allophane, which possess negative surface charges at neutral to alkaline pH levels, leading to electrostatic repulsion with the negatively charged MO anions. Silica gel synthesized from Gamalama volcanic soil demonstrates promising potential as an eco-friendly adsorbent for dye removal from aqueous solutions.
Co-Authors Ahmad Muchsin Jayali Annisa, Dira Ayu Ariyana, Muto'ah Intan Cipta, Indra Daiman, Fanina Embisa, Anjam Putra A. Fadlan Muin Hernawan Hernawan Ibrahim, Fitriana Kumendong, Nurbaiti Kusuma, Anggieta Pahmawati Liong, Nurhaja Mauraji, Ilham Mauraji, Ilham SW Moligai, Nursafina Banse Muhammad Amin Muhdar, Sri Arlika Muliadi MULIADI -, MULIADI Muzdalifa, Eccy Sitti Nur Abu, St Hayatun Nur Anisa Nur Asbirayani Limatahu Nurfatimah Sugrah Puspitasar, Setyani Dian Rombe, Yunita Pare RR. Ella Evrita Hestiandari Siti Mahmudha Umahuk, Sabaria Zulkifli Zam Zam