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All Journal Jurnal Pendidikan Kimia Undiksha Jurnal Entropi Sainstek Alchemy : Journal of Chemistry TELKOMNIKA (Telecommunication Computing Electronics and Control) The Journal of Pure and Applied Chemistry Research QUANTUM: Jurnal Inovasi Pendidikan Sains Jurnal Zarah Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Journal Health & Science : Gorontalo Journal Health and Science Community Jambura Journal of Educational Chemistry Jambura Journal of Chemistry RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi Acta Chimica Asiana Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) Jurnal Pengabdian Masyarakat (ABDIRA) Indonesian Journal of Pharmaceutical Education JURNAL KIMIA SAINTEK DAN PENDIDIKAN Jurnal Pengabdian Masyarakat Farmasi : Pharmacare Society Mutiara: Multidiciplinary Scientifict Journal Algoritma: Jurnal Matematika, Ilmu Pengetahuan Alam, Kebumian dan Angkasa RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi Konstanta : Jurnal Matematika dan Ilmu Pengelatuan Alam

Ishak Isa

Universitas Negeri Gorontalo

Author-ID : 3379855

Aerospace Engineering Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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PENETAPAN TEMBAGA (CU) PADA MUARA SUNGAI BONE DENGAN METODE SPEKTROFOTOMETRI SERAPAN ATOM Isa, Ishak
Sainstek Vol 1, No 3, 2006
Publisher : Jurnal Sainstek

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (56.919 KB)

This research is aimed to know the amount of Cuprum (Cu) in the Bone Rivers delta by its sediment as the sample. This analysist uses the Atomic Absorption Spectrofotometry method. Sample of this research was taken from two places. They were the delta of Bone River and river stream area 50 meters from the delta. This was done to know the source of the Cuprum that comes into the delta. This research shown that the amount of Cuprum in Bone Rivers delta is 0,0449658 ppm than the amount of Cuprum in the river stream area which is 50 meters from the delta where the amount of Cuprum is 0,0445991 ppm. This amount is still in the limit of tolerance, base on the Letters of Decision of Minister of Cuprum in the maritime body is 0,06 ppm.

PEMANFAATAN ARANG BRIKET LIMBAH TONGKOL JAGUNG SEBAGAI BAHAN BAKAR ALTERNATIF Lukum, Haris; Isa, Ishak; Sihaloho, Mangara
Sainstek VOL 06, NO 05, 2012
Publisher : Jurnal Sainstek

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (222.661 KB)

This study aims to utilize corn cob charcoal made briketdengan using sago pereket used variation in the ratio between sago and charcoal are: 1:3, 1:4, 2:3, 2:5. charcoal briquettes are made of corn cobs proksimasi testing include: air.kadar ash content, volatile compounds decomposition levels, the levels of heat, carbon-bound, and test the density of briquettes. comparing the corn cob charcoal briquettes with briquette quality standards through test proksimasi. test results of corn cob charcoal briquettes proksimasi dalah as follows: the level of water in 1:3 variation was 6.66%.,, 1:4 is 7.30%., 2:3 is 8.66%., 2:5 is 7.50%., 1:3 variation in ash content was 3.28%., 1:4 is 3.11%., 2:3 and 2:5 were 3.50% is 3.40%., Dekomposi volatile compounds in variations of 1:3 is 44.58., 1:4 is 58.99%., 2:3 is 2:5 adalah51 62.02%, 30%. Carbon bound to the variation of 1:3 is 45.48%., 1:4 is 54.56., 2:3 and 2:5 is 25.84 is 41.20. Calorific value of the variation of 1:3 is 6757kal / g. 1:4 is 6150kal / g., 2:3 is 3758 cal / g and 2:5 is 2912 cal / g.Kerapatan at 1:3 variation is 0.63 g/cm3., 1:4 is 0.60 g / cm3.,., 2:3 is 0.56 cal / g and 2:5 is 0.55 cal / g. Corn cob briquettes charcoal briquettes meet the quality standards by having a calorific value and high decomposition of volatile compounds that corn cob briquettes are of good quality

PENETAPAN MERKURI (Hg) PADA SALURAN AIR LIMBAH RUMAH SAKIT ALOEI SABOE GORONTALO SECARA DIRECT MERCURY ANALYZER Isa, Ishak
Sainstek Vol4, No 3, 2009
Publisher : Jurnal Sainstek

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Penelitian ini bertujuan untuk mengetahui kadar merkuri terlarut pada saluran pembuangan limbah dari poliklinik gigi rumah sakit Aloei Saboe Kota Gorontalo. Penetapan kadar merkuri dalam Sampel secara Direct Mercury Analyzer (DMA). Sampel yang dianalisis diambil pada tiga titik yaitu saluran poliklinik gigi (titik A), pada saluran umum/samping rumah sakit (titik B), dan jarak 100 meter dari titik B/samping SMA 1 Gorontalo (titik C). Hasil penelitian menunjukkan bahwa kadar merkuri pada Sampel air limbah rumah sakit berturut-turut pada titik A (1995 ppb), titik B (7115 ppb), dan titik C (1306 ppb). KATA KUNCI : DIRECT MERCURY ANALYZER, MERKURI

INTERPRETASI DATA DERAJAT KRISTANILITAS DAN UKURAN KRISTAL KARBON AKTIF AMPAS TEBU TERAKTIVASI KOH, H3PO4, Na2S2O3, KMnO4, KSCN, FeCl3 Kunusa, Wiwin; Iyabu, Hendrik; Isa, Ishak
Jurnal Zarah Vol 8 No 2 (2020): Jurnal Zarah
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/zarah.v8i2.2390

Penelitian ini mengkaji tentang pembuatan dan karakterisasi karbon aktif ampas tebu (KAAT) menggunakan metode aktivasi fisik dan aktivasi kimia. Digunakan variasi suhu karbonasi 4500C dan 6500C dan aktivator H3PO4 10%, FeCl3 10%dan KMnO4 10%. Hasil karakterisasi derajat kristanilitas dan ukuran Kristal karbon aktif menggunakan Instrumen pembacaan hasil Difragtogram XRD. Variasi aktivator dan variasi suhu dilakukan tujuannya untuk menghasilkan produk arangaktif yang memiliki permukaan spesifik, porositas, kerapatan dan ketahanan mekanis yangtinggi.Berdasarkan hasil perhitungan derajat kristalinitas sampel secara keseluruhan cenderung meningkat berdasarkan kenaikan suhu.

Information system of Limboto Lake potential management Lanto Ningrayati Amali; Sunarty Eraku; Ishak Isa; Rifadli Bahsuan; Sitti Suhada; Muhammad Rifai Katili
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 5: October 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i5.11800

Limboto Lake is one of the lakes in Gorontalo Province; its water supply is generated from 23 small and large rivers. The lake holds potential in several sectors, e.g., tourism, fisheries, socio-economy and culture. However, such an advantage has no quality information system as it is found that there are no particular services that manage the information regarding Limboto Lake accurately. The objective of this research is to create an information system for the management of the potential area of the lake to provide quality services to access the information accurately and completely. The provided information is also updated timely. This research employed the System Development Life Cycle (SDLC) method in the development of the information system. Furthermore, the data were collected from interview, observation, and reviewing literature and document. This system is tested using white box and black box where it generated the expected outcome and is web-based. The output of this research is a system that eases the society to access the information regarding the management of the potential area in Limboto Lake.

Biosorption of Methylene Blue by Activated Carbon from Sugarcane Waste (ACSW) Hendri Iyabu; Wiwin Rewini Kunusa; Ishak Isa; Doly Prima Silaban
The Journal of Pure and Applied Chemistry Research Vol 10, No 3 (2021): Edition September-December 2021
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2021.010.03.559

This study was aimed to produce and characterized activated carbon from sugarcane bagassebyphysical and chemicalactivation. Physical activation was performed by carbonation process in temperatures 4500C and 6500C. While chemical activationusedH3PO4 10%, FeCl3 10% and KMnO4 10% as activator. The results showed that total yield (%) 49.8396 - 80.635; pH 4.0-7.9; ash content (g) 0.3338-0.8820; adsorption capacity of iod (%) 93.92-99.20. Morphological structure, functional group and Crystal structure was studied by using SEM analysis, FT-IR and XRD Difragtogram respectively.Adsorption capacity(%) of methylene blue 1.5 ppm and 2.5 ppm using UV-VIS Spectrophotometer produces; for H3PO4activatorat 450℃ = 99.24 and ND;at 600℃ = ND and 99.24. FeCl3 activator at 450℃ = 93.8 and 28.68; At 600℃ = ND and 99.24. KMnO4 activator at 450℃ = 61.24 and 65.12; At 600℃ = 39.4 and 53.79.

Biokonversi Limbah Tongkol Jagung Menjadi Bioetanol Sebagai Bahan Bakar Alternatif Terbarukan Hendri Iyabu; Ishak Isa
Jambura Journal of Chemistry Vol 1, No 2 (2019): August
Publisher : Universitas Negeri Gorontalo

Penelitian ini bertujuan untuk mengkonversi lignoselulosa dari jagung tongkol limbah menjadi bioetanol sebagai bahan bakar alternatif terbarukan. Proses pembuatan etanol dari kotoran jagung sampah dapat melalui tiga tahapan yang penting, menghidrolisis lignocellulose menjadi gula, fermentasi gula ke dalam pemurnian etanol andethanol. Proses menghidrolisis kimia menggunakan asam sulfat encer. Fermentasi gula ke etanol menggunakan Saccharomyces Cerevisiae, sedangkan pemurnian alkohol yang dihasilkan melalui proses distilasi. Hasil penelitian menunjukkan bahwa alkohol (etanol) konsentrasi yang diperoleh masih di bawah standar yang diinginkan sebagai alternatif energi untuk bahan bakar fosil.

Pemanfaatan Asap Cair Tempurung Kelapa Sebagai Pestisida Organik Terhadap Mortalitas Ulat Grayak (Spodoptera Litura F.) Ishak Isa; Wenny J.A Musa; Sity Wirid Rahma
Jambura Journal of Chemistry Vol 1, No 1 (2019): February
Publisher : Universitas Negeri Gorontalo

This study aims to determine the effect of the concentration of liquid smoke coconut shell on mortality against armyworm. Research conducted at the Chemical Laboratory of the State University of Gorontalo. Liquid smoke is obtained through the pyrolysis process is a heating process at a given temperature of a coconut shell with a limited amount of oxygen. To find out the components contained in the liquid smoke coconut shell, then analyzed using GCMS, then in assay acid, phenol content test, test the pH of liquid smoke and liquid smoke test results influence coconut shell can be mortality in armyworm. The results obtained pyrolysis liquid smoke grade 3 is used as an organic pesticide on armyworms with a variant of the concentrations used are 1, 3, 5 and 7%. GCMS analysis finds that there are 7 compound, methyl ester of oxalic acid 31.41%, 2,3-butanadion 0.29%, 48.75% acetic acid, 2-propanone 1-hydroxy 7.25%, propanoic acid 4,01%, 2- furankarboksaldehid 5.09%, and 3.19% phenol. Values acid test of 13.9356 mg/mL, the test value phenol content of 6.53710-01%, has a pH of 3. The results showed that liquid smoke coconut shell with a concentration of 7% have a presentation armyworm mortality of 88.89%.Keywords: Shell Oil, Liquid Smoke, Pesticides Organic, armywormPenelitian ini bertujuan untuk mengetahui pengaruh konsentrasi asap cair tempurung kelapa terhadap mortalitas terhadap ulat grayak. Penelitian dilakukan di Laboratorium Kimia Universitas Negeri Gorontalo. Asap cair diperoleh melalui proses pirolisis merupakan proses pemanasan pada temperatur tertentu dari tempurung kelapa dengan jumlah oksigen yang terbatas. Untuk mengetahui komponen yang terdapat pada asap cair tempurung kelapa, maka dianalisis menggunakan GCMS, selanjutnya di uji kadar asam, uji kadar fenol, uji pH asap cair dan uji pengaruh hasil asap cair tempurung kelapa dapat bersifat mortalitas pada ulat grayak. Hasil pirolisis yang didapatkan asap cair grade 3 yang digunakan sebagai pestisida organik pada ulat grayak dengan varian konsentrasi yang digunakan yaitu 1, 3, 5 dan 7%. Hasil analisis GCMS diketahui terdapat 7 senyawa, metil ester asam oksalat 31,41%, 2,3-butanadion 0,29%, asam asetat 48,75 %, 1-hidroksi- 2-propanon 7,25 %, asam propanoat 4,01%, 2-furan karboksaldehid 5,09%, dan fenol 3,19%. Nilai uji kadar asam sebesar 13,9356 mg/mL, nilai uji kadar fenol sebesar 6,53710-01%, memiliki pH sebesar 3. Hasil penelitian menunjukan bahwa asap cair tempurung kelapa dengan konsentrasi 7% memiliki presentasi mortalitas ulat grayak sebesar 88,89%.Kata Kunci : Tempurung kelapa, asap cair, pestisida organik, ulat grayak

Potensi Ampas Tebu Sebagai Adsorben Logam Berat Cd, Cu dan Cr Rusmani Tasanif; Ishak Isa; Wiwin Rewini Kunusa
Jambura Journal of Chemistry Vol 2, No 1 (2020): February
Publisher : Universitas Negeri Gorontalo

Penelitian ini bertujuan untuk mengetahui daya serap arang aktif dari ampas tebu dan kondisi optimum arang aktif dalam mengadsorpsi ion logam berat Cd, Cu dan Cr dengan tiga variasi yaitu variasi massa, variasi konsentrasi dan variasi waktu kontak. Limbah ampas tebu memiliki kandungan selulosa yang mampu untuk mengadsorpsi adsorben. Preparasi ampas tebu meliputi pembuatan arang ampas tebu, pembuatan arang aktif secara aktivasi kimia dengan menggunakan larutan HCl, arang aktif yang diperoleh dikarakterisasi meliputi uji kadar air, kadar abu serta analisis gugus fungsi menggunakan Instrument Fourier Infrare (FTIR),dan analisis morfologi arang aktif menggunakan Scanning Electron Microscope (SEM). Aplikasi arang aktif digunakan sebagai adsorben logam berat Cu, Cd, dan Cr dengan menggunakan Spektrometri Serapan Atom (SSA). Berdasarkan hasil penelitian menunjukan bahwa kemampuan daya serap adsorpsi arang aktif pada fariasi massa untuk logam Cd, Cu dan Cr diperoleh berat optimum optimum 2,5 g dengan daya serap masing-masing logam adalah Cd 0,31 mg/g, Cu 0,31 mg/g, dan Cr 0,31 mg/g, Variasi konsentrasi ion logam Cd dan Cu dan Cr dengan daya serap adsorpsi mencapai kondisi optimum pada daya serap adsorpsi mencapai kondisi optimum pada konsentrasi konsentrasi 2 mg/L dengan daya serapan masing-masing logam adalah Cd 0,19 mg/g, Cu 0,19 mg/g dan Cr 0,19 mg/g. Penyerapan optimum logam Cd, Cu dan Cr dengan massa adsorben 1 g adalah mengadsorpsi Cd 0,7981 mg/g, Cr 0,7995 mg/g sementara untuk logam Cu 0,755 mg/g.

Analisis Kandungan Calsium (Ca) Kalium (K) Pada Sedimen Danau Limboto Menggunakan Metode AAS Annisa Untuba; Ishak Isa; Wiwin Rewini Kunusa; Jafar La Kilo
Jambura Journal of Chemistry Vol 4, No 2 (2022): August
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jambchem.v4i2.14768

ABSTRACT Lake Limboto is a natural resource currently owned by Gorontalo Province. Lake Limboto has played a role as a source of income for fishermen, flood prevention, irrigation water sources and tourism objects. Sediment is sediment that comes from the breakdown of rocks, or biological materials that are transported through a liquid, and solid materials (sediments) that float in, or are deposited in water. This study aims to determine the content of calcium and potassium in the sediment of Limboto lake, straw, and analysis of Ca and K in liquid organic fertilizer from straw and sediment using the AAS method. The results showed that the levels of calcium (Ca) from the three points in the sediments of the Limboto lake met the SNI standards, namely 0.20, 0.37, 0.59%. Meanwhile, the potassium (K) levels from the three points did not meet the SNI standards, namely 0.15, 0.10, 0.13%, different from those obtained from the analysis of the calcium and potassium content of the straw that met the SNI standards of 0.35% and 1.52. %. In liquid organic fertilizer the content of Ca and K from three points yields little, while the results of Ca content meet the SNI standards of 0.04, 0.05, 0.06%, the results of K levels do not meet the SNI standards, namely 0.09, 0.07, 0.08%. Keywords: Limboto Lake; Straw Sediment; Calcium; Potassium

Co-Authors Abidin, Khoirul Ahmad Kadir Kilo Akram La Kilo Andimala, Febriyanti Annisa Untuba Arviani Arviani Astin Lukum Balong, Sulsitiawati Bukani, Windi Doly Prima Silaban Elawati, Elawati Elvira T Haruna Endah Nurrohwinta Djuwarno Erga Kurniawati Erni Mohamad Febriyanti Andimala Fitryane Lihawa giu, fitri ani Halalutu, Hamdan Halalutu, Hamdan Haleda, Padria Haris Lukum Haris Munandar Hendri Iyabu Hendri Iyabu Hendri Iyabu Hendri Iyabu Hiola, Faramita Ibrahim, Indriyanti Indriati Martha Patuti Ishak, Candrawati Jafar La Kilo Jafar La Kilo Jafar La Kilo Julhim S Tangio K Baderan Kasim, Sesha Ramadhani La Ode Aman Lanto Ningrayati Amali Latief, Suti Anggriani LATIF, MULTIANI S Lisdawati N. Umar Lukman A. R. Laliyo Maimun Wahab Mangara Sihaloho Mardjan Paputungan Marike Mahmud Maryam Padi Masrid Pikoli Mayawati Uno Merlin Darise Meyrin Hamzah Mohamad Adam Mustapa Mohamad Aprianto Paneo Muhammad Taufiq Nur Muhammad Taupik Musa, Weni J.A Musa, Wenny J.A Najmah Najmah Najmah, Najmah Nento, Tia Dwi Lestari Netty Ino Ischak Nita Suleman Nita Suleman Nita Suleman Novianti, Rani Nur Ain Thomas Nurhayati Bialangi Ode Aman, La Openhotman, Openhotman Opir Rumape Padi, Maryam Pahrun, Abdul Wahab Pakaya, Agustina H. Papeo, Dizky Ramadani Putri Rahma, Sity Wirid Rifadli Bahsuan Riskawati Pomolango Rusli Isa Rusmani Tasanif Saripa A. Laiya Selvian Idrus Siti Aminah Sitti Suhada Sity Wirid Rahma Sri Andrawati Biya Sukertini, Kadek Sunarty Suly Eraku Thayban, Thayban Tiro, Lusiani La Umar, Ahmat Sudir Usman, Yuyan Ali Wenny J.A Musa Weny J.A Musa Widayanti . Wiwin Rewini Kunusa Yuszda K Salimi Zainal, Sriyanti Zainudin, Farnawaty

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