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All Journal Jurnal Periodic Jurusan Kimia UNP JURNAL EKSAKTA PENDIDIKAN (JEP) CHEDS: Journal of Chemistry, Education, and Science JOURNAL OF CHEMICAL NATURAL RESOURCES (JCNaR) Entalpi Pendidikan Kimia

Ananda Putra

Unknown Affiliation

Author-ID : 3659321

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

Published : 10 Documents Claim Missing Document

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Articles

Efektivitas Penggunaan Modul Larutan Penyangga Berbasis Discovery Learning terhadap Hasil Belajar Siswa Kelas XI MIA SMAN 7 Padang Yerimadesi Yerimadesi; Ananda Putra; Ririanti Ririanti
JURNAL EKSAKTA PENDIDIKAN (JEP) Vol 1 No 1 (2017): JEP : Jurnal Eksakta Pendidikan
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jep/vol1-iss1/29

Quasi experiment research with randomized control posttest group only design was carried out to determine the effectiveness of using a discovery learning based module on students learning outcome. Grade XI MIA-1 to MIA-4 students academic year 2015/2016 in SMAN 7 Padang became population of this study. Through cluster sampling technique, grade XI MIA-1 and grade XI MIA-4 were chosen as experiment and control classes respectively. The experiment class was taught using discovery learning based module in buffer solution topic while the control class was taught the same topic conventionally without the module. Research instrument used was cognitive learning outcome test with multiple choice form. Data showed that the mean test score of experiement class (78.84) was higher than that of control class (71.09). Normality and homogenity test proved that both classes were homogeneous and normally distributed. T-test, as data analysis taken, showed that t-count (3,51) is bigger than t-table (1.67). Thus, it could be concluded that students’ cognitive learning outcome in experiment class is significantly higher than that in control class. The use of discovery learning-based module in buffer solution topic was effective in increasing learning outcome of grade XI MIA students in SMAN 7 Padang.

Degradasi Zat Warna Methyl Violet dengan Katalis ZnO/Ag Menggunakan Metode Fotosonolisis Rahma Sari; Hary Sanjaya; Yohandri Yohandri; Ali Amran; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Abstract – the photosonolysis method was used for the degradation of methyl violet in the sample solution using a ZnO doping Ag catalyst. This study aims to determine the effect of radiation time and the addition of Ag doping on ZnO catalyst on the degradation of Methyl violet. UV-Vis spectrophotometer was used to calculate the absorbance concentration of methyl violet before and after degradation while UV-DRS was used to measure the band gap value. The results showed that the highest percentage of Methyl violet degradation was 93.51% at 120 minutes using ZnO without doping. The highest degradation of methyl violet was at 90.50% using a 10% ZnO/Ag catalyst. the band gap obtained from the measurement of ZnO/Ag is 3.26%.Keywords: degradasi, Methyl Violet, ZnO/Ag, Photosonolysis, Band gap

Kelarutan Zat Warna Organik dalam Gelasi Mikroemulsi Water In Oil Sistem dari Air Triton X-100 dan Sikloheksana Mery Khasanah; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v10i2.112474

Abstract —solubility of dyes from organic matter powder of dragon fruit peel of blue telang flower and turmeric in the gelation of water in oil mikroemulsion of the system of water (pH 4,5 and pH 9,5), Triton X-100, cyclohexane and its application for ink. For water pH 4,5 (controlled by nitric acid) and water pH 9,5 (controlled by potassium hydroxide), the formation of gel from water in oil microemulsion was crieddent using the so-gel mhetod by Tetraethylorthosilicate (TEOS) which underwent hydrolysis with water for from a gel. It was indicated that the solubility of the dye from organic matter in the gelation of water in oil microemulsion is at pH 9,5 dragon fruit peel powder at 0,0215 and the lowest pH 4,5 powder of blue telang flower powder is 0,0120Keywords — solubility, organic dyes, gel, water in oil microemulsion, ink.

Preparation and Characterization of Activated Carbon From Mangosteen Peels (Garcinia Mangostana L) Rahmiatul Husna; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 1 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

The purpose of this experiment was to prepare and characterize activated carbon from Mangosteen peels (Garcinia mangostan L). Carbon from Mangosteen peels was prepared by pyrolysis method at 300°C for 1 hour. This carbon was activated by chemical activation process with various activating reagent and concentration. The activated carbon was characterized using Indonesian Industry Standard (SNI 06-3730-1995), that is maximum water content of 15%, maximum vapor content of 25%, maximum ash content of 10% and bounded carbon content at least 65%. The results showed that the highest bounded carbon content obtained from pyrolysis was 78,09%. The best activating reagent was HCl with concentration of 4N that improved the bounded carbon to 87,84%. The water content, ash content, and vapor content of activated carbon was obtained as follows, 6,11%, 1,97%,and 10,19%. Based on this results, activated carbon of mangosteen peels conformed the (SNI 06-3730-1995) values and will be applied as a thermoelectric material.

Efek Crosslinker terhadap Performa Komposit Selulosa Bakteri – Ekstrak Daun Kembang Sepatu ( Hibiscus rosa- Sinensis L ) Egidia Mayendra; Minda Azhar; Indang Dewata; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Abstract — Bacterial cellulose can be applied in various fields such as biomedical fields, separation membranes, artificial blood vessels, and substrates for tissue engineering cartilage. Bacterial cellulose still has low mechanical properties, so a bacterial cellulose composite with hibiscus leaf extract (KSB-EDKS) is formed to obtain new, better materials. The purpose of this study was to determine the effect of adding starch as a crosslinker, on the mechanical, physical, and structural properties of KSB-EDKS. Bacterial cellulose is produced from a mixture of coconut water, sugar and urea. Then fermented with acetobacter xylinum for 14 days. Bacterial cellulose formed in composites with hibiscus leaves is called bacterial cellulose extract of hibiscus leaves (KSB-EDKS). KSB-EDKS will be characterized by testing tensile strength, moisture content, structural analysis using FTIR and determining the degree of crystallinity using XRD. The addition of a crosslinker can reduce the percentage of KSB-EDKS water content. The best tensile strength test results were KSB-EDKS added with 3% tapioca flour solution with a value of 38.3 MPa, the FTIR spectrum showed that the functional groups in cellulose had just shifted in the range of the same wave number values and for the degree of crystallinity the addition of starch as crosslinker can reduce the degree of crystallinity in KSB-EDKS. Keywords — Bacterial cellulose, Composite, Crosslinker, Hibiscus leaves

Preparasi dan Karakterisasi Karbon Aktif dari Kulit Kacang Tanah (Arachis Hypogaea L.) Yolla Rama Wanda; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Organic waste was a problem for society and government. Because that was due of environmental pollution. Organic waste was divided into organic waste which was easily broken down because has relatively short chemical chain and organic waste that does not decompose easily because has a relatively long chemical chain. One of the efforts that might be a solution for processing this waste by using into it activated carbon. The purposes of that experiment were to prepare and characterize activated carbon from peanut shell (Arachis Hypogaea L.). Carbon from peanut shell was prepared by pyrolysis at 300˚C, 350˚C and 400˚C for 1 hour. After pyrolysis, the carbon from the peanut shell was mashed and filtered using 150 μm sieve. And then, tested the moisture content, ash content, vapor content, and bound carbon content. The resulted showed the highest bound carbon content pyrolysis at 350˚C. The carbon was activated by chemical activation, with various of compounds and different concentrations. The resulted showed the highest bounded carbon content was found 64,7%. The best Activation reagent was ZnCl2 of 6N and made improved bounded carbon content was 85,78%. The water content was found 1,1%, the ash content was found 1,34%, and the vapor content was 12,88%. Based on the resulted activated carbon from peanut shell comformed the SNI 06-3730-1995.

Degradasi Zat Warna Metil Merah Dengan Katalis ZnO Menggunakan Metode Fotosonolisis Putri Ayu; Ananda Putra; Hary Sanjaya; Indang Dewata; Yohandri Yohandri
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

The research that has been carried out on the photosonolytic degradation of methyl red uses a ZnO as a catalyst which aims to determine the effect of time and catalyst mass on the degradation of methyl red. The time of degradation is about 30 to 150 minutes while about 0,05 grams to 2,5 grams of catalyst mass is used. The measurement results of the Uv-Vis spectrophotometer were obtained at a wavelength of 435nm with an absorbance 0,2471. In the variation of the degradation time, the highest result was obtained at 60 minutes which was 75,27%, while the ZnO mass variation carried out at the optimum time of 60 minutes obtained the highest results in the addition of 0,15 grams ZnO with the percentage of degradation (%D) of 47,79%. This study shown that hydroxyl radicals (∙OH) takes as a main control in degrading of methyl red.

Bacterial Cellulose-BasedBiodegradable Plasticfrom Pineapple (Ananassativus) Skin Waste: The Effectof Sorbitol On The QualityOf The Biodegradableplastic Ananda Putra
Journal of Chemical Natural Resources Vol. 1 No. 1 (2019): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

The aim of this research was to investigate the effect of sorbitol on the quality ofbacterial cellulose-based biodegradable plastic from pineapple skin waste. Various concentrations of sorbitol as the plasticizer were added into a fermentation medium in the synthesis of bacterial cellulose-sorbitolcomposite (BCSC). The BCSCobtainedwas purified by soaking it into a cycled water-NaOH-water. The purified BCSC wasthen compressed using a hot press with the pressure of 300 psi to obtain BCS plastic. The BCS plasticwas characterized in the aspect of physical properties (water content,the degree of swelling), mechanical properties (tensile strength,elongation, elasticity), molecular structure (functional groups, thedegree of crystallinity), and biodegradability. The results showed that the percentage ofwater content anddegree of swelling of theBCS plastic increased with the addition of sorbitol concentrations. The maximum tensile strength was obtained with the addition of 10.5% sorbitol (%v/v). The degrability of the BCS plastic was up to 59% until the 9th day. TheFTIR results showed that functional groups appeared in the BCS plastic were similar to those of the BC. The degree of crystallinity of the BCSplastic decreased with the increasing concentration of sorbitol.

PENGUJIAN APROKSIMAT KARBON AKTIF KULIT NANAS (Ananas comosus L. Merr) Lina Novia; Ananda Putra
CHEDS: Journal of Chemistry, Education, and Science Vol 6, No 2 (2022)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v6i2.6111

Karbon aktif adalah suatu karbon yang sebelumnya telah diaktivasi dengan bahan kimia pada suhu tinggi sehingga memiliki kemampuan serapan yang tinggi dari pada karbon murni. Pada penelitian ini telah dilakukan uji aproksimat karbon aktif dari suatu limbah kulit nanas. Kandungan seperti lignin, selulosa dan hemiselulosa pada kulit nanas dapat diketahui sumber karbon yang sangat baik. Karbon aktif kulit nanas dibuat melalui proses karbonisasi pada suhu 350 0 C selama 60 menit serta diaktivasi dengan ZnCl 2 15% selama 7 jam, setelah itu mengukur kadar air, kadar uap, kadar karbon, serta daya serap iod sesuai dengan SNI No. 06 -3720-1995, dimana didapatkan kadar air sebesar 7,15 %, kadar abu 5.07%, kadar uap 14,36%, kadar karbon karbon 80,57% serta data serap iod 1416,74 mg/g.

Komik kimia sebagai Alternatif Media Pembelajaran pada Materi Reaksi Reduksi dan Oksidasi Kelas X SMA Sil Purnamasari; Ananda Putra
Entalpi Pendidikan Kimia Vol 1 No 1 (2020)
Publisher : Universitas Negeri Padang

Penggunaan media dalam proses pembelajaran akan mampu membantu menumbuhkan minat belajar peserta didik. Komik kimia dapat dijadikan sebagai salah satu inovasi alternatif media pembelajaran pada materi reaksi reduksi dan oksidasi. Penelitian ini bertujuan untuk mengembangan media pembelajaran dalam bentuk komik kimia pada materi reaksi reduksi dan oksidasi dengan menentukan tingkat validitas dan praktikalitas. Jenis penelitian yang adalah jenis penelitian Research and Development (R&D) dengan menggunakan model pengembangan 4-D, yang terdiri dari 4 tahap: define, design, develop, dan disseminate. Pada tahap disseminate tidak dilakukan karena keterbatasan waktu dan biaya. Angket validasi dan praktikalitas digunakan sebagai instrumen penelitian untuk melihat kevalidan dan kepraktisan komik kimia. Validitas dilakukan dengan 6 validator dan praktikalitas dilakukan dengan 30 peserta didik serta 4 orang guru kimia. Teknik analisa data ini menggunakan formula Kappa Cohen’s. Hasil dari uji validasi komik kimia memperoleh moment kappa (k) sebesar 0,82 dengan memiliki kategori sangat tinggi. Sementara itu hasil dari uji praktikalitas komik kimia memperoleh moment kappa (k) sebesar 0.86 dengan memiliki kategori sangat tinggi . Diharapkan untuk kedepannya dapat membuat media pembelajaran berbentuk komik pada materi lainnya.

Co-Authors Ali Amran Egidia Mayendra Hary Sanjaya Indang Dewata Lina Novia Mery Khasanah Minda Azhar Putri Ayu Rahma Sari Rahmiatul Husna Ririanti Ririanti Sil Purnamasari Yerimadesi Yerimadesi Yohandri Yolla Rama Wanda

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