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All Journal Jurnal Hortikultura Indonesia Jurnal Kreatif Tadulako Online Jurnal Akademika Kimia Jurnal Akademika Kimia
Vanny M. A Tiwow
Pendidikan Kimia University Of Tadulako
Agriculture, Biological Sciences & Forestry Chemistry Education

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ADSORPSI ION KADMIUM(II) DARI LARUTANNYA MENGGUNAKAN BIOMASSA AKAR DAN BATANG KANGKUNG AIR (Ipomoea aquatica Forks) (Adsorption of Cadmium(II) Ion from its Solution by Using Biomass of Roots and Stems’ Water Spinach (Ipomoea Aquatic Forsk)) Suhud, Iffatunniswah; Tiwow, Vanny M. A.; Hamzah, Baharuddin
Jurnal Akademika Kimia Vol 1, No 4 (2012)
Publisher : Universitas Tadulako

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Abstract

The research has been conducted on the adsorption of cadmium(II) ion from its solution by using biomassa roots and stems of water spinach (Ipomoea Aquatic Forsk). Theaim of the research was to determine optimum pH and concentration of cadmium(II) metal adsorbed by biomass root and stems of water spinach. The method used this study was laboratory experiments with 0.1 grams of roots and stems of water spinach powder as adsorbent and 25 mL of the cadmium(II) solution. The variation of pH was 1, 2.3, 4.5, 6.7, and 8, while the concentration was 100 ppm, 200 ppm, 300 ppm, 400 ppm, 500 ppm, 600 ppm, and 700 ppm. Determination of cadmium(II) ion adsorbed by the adsorbent has been performed using atomic adsorption spectrophotometer (AAS). The measurement showed that the optimum pH of cadmium(II) ion adsorbed by the root of water spinach was at pH 4, and by the stems was at pH 3. While the optimum concentration of metal cadmium(II) solution adsorbed by the biomass of roots and stems of water spinach was 600 ppm, the same as the adsorption powerof 91.862 mg/g for root and 91.118 mg/g for stems respectively.
Analisis Unsur Hara Pupuk Organik Cair dari Limbah Ikan Mujair (Oreochromis mosambicus) Danau Lindu dengan Variasi Volume Mikroorganisme Lokal (MOL) Bonggol Pisang Lepongbulan, Winda; Tiwow, Vanny M. A.; Diah, Anang Wahid M.
Jurnal Akademika Kimia Vol 6, No 2 (2017)
Publisher : Universitas Tadulako

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Abstract

The Lake Lindu is one of the potential water resources in Central Sulawesi with various species of fish and one of the most commonly found fish are species mujair fish. Mujair fish processing wastes such as offal can be polluted the environment if not managed properly. The study aim is to determine the contents of NPK nutrients in the liquid organic fertilizer by adding MOL banana weevil. The contents of nitrogen (N), phosphorus (P), and potassium (K) was determined by using spectro direct. The NPK contents in the liquid organic fertilizer of mujair fish waste from Lake Lindu reached the maximum NPK contents of nitrogen (N) of 0.311% by addition 100 mL MOL banana weevil, phosphorus (P) 0.167% by addition 150 mL of MOL banana weevil, and potassium (K) of 0.037% by addition 150 mL MOL banana weevil.
Analisis Kandungan Nitrogen (N) dan Posforus (P) pada Limbah Jeroan Ikan Mujair (Oreochromis mosambicus) Danau Lindu Hildawianti, Hildawianti; Tiwow, Vanny M. A.; Abram, Paulus Hengky
Jurnal Akademika Kimia Vol 6, No 3 (2017)
Publisher : Universitas Tadulako

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Abstract

An effort to minimize the environmental pollution is using that waste as a base material of organic fertilizer. This study was conducted to determine the levels of Nitrogen (N) and phosphorous (P) contained in the offal waste of mujair fish (Oreochromis mosambicus) from Lindu lake. Samples of mujair offal waste were taken from fish saler on the street Towua, Palu. Analysis of Nitrogen levels usedKjeldhal method which consists of three phases, namely destruction, distillation, and titration. On the other hand, for Phosphorus analysis was using wet digestion method, followed by absorbance measurements of samples with spectronic 20 at a wavelength of 720 nm. Based on the analysis, the average of nitrogen (N) levels in mujair offal waste was 2.78%, while the average of phosphorus (P) levels was 2.48%. From these results, it is known that mujair offal waste contains more nitrogen (N) compared to phosphorous (P). In addition, when compared to the quality standard liquid organic fertilizer N and P content in mujair offal almost meets the quality standard liquid fertilizer, where the minimum technical requirements of organic liquid fertilizer should contain a total N content of 3-6% and 3-6% P2O5.
Analisis Kadar Glukosa pada Nasi Putih dan Nasi Jagung dengan Menggunakan Metode Spektronik 20 Novianti, Muli; Tiwow, Vanny M. A.; Mustapa, Kasmudin
Jurnal Akademika Kimia Vol 6, No 2 (2017)
Publisher : Universitas Tadulako

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Abstract

Study on the main content of carbohydrates in rice and corn has been done. This study aims to determine the glucose level in a mixture of corn and rice with a certain ratio prior and during storage in a rice cooker. Spectronic 20 was used in this study to measure the absorption wavelength of sample solutions. Samples used in this study were from rice and sweet corn (Zea mays L. Saccharata) in various ratios of 1:0, 0:1, 1:1, 1:2, 2:1, 3:1 and 1:3, and variations in storage of 0, 1, 6, 12, 18, 24, 30, and 36 hours. The results showed that the highest glucose level in corn were of 32.250 ppm within 12 hours storage, and 40.447 ppm in rice for 12 hours storage. The highest level of glucose in mixture of corn and rice for 12 hours storage was 67.546 ppm at a ratio of 1 : 3.
Analisis Tembaga (Cu) Dan Timbal (Pb) dalam Air Laut dan Sedimen di Perairan Pantai Loli Kecamatan Banawa Kabupaten Donggala Santi, Santi; Tiwow, Vanny M. A.; Gonggo, Siang Tandi
Jurnal Akademika Kimia Vol 6, No 4 (2017)
Publisher : Universitas Tadulako

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Abstract

This study aimed to determine the concentration of heavy Cu and Pb in seawater and sediment in coastal waters Loli subdistrict Banawa, district Donggala. The method used was destruction and using Atomic Absorption Spectrophotometer (AAS) instrument.Samples of seawater and sediment were taken by two sampling points. Samples were destructed by using a solution of HNO3 and HClO4with ratio 4: 1. Levels were measured at a wavelength of 325.7 nm for Cu and 217 nm for Pb. The analysis result obtained that the levels of Pb in the seawater in the range of 0,531-0.671 mg/L, while for Cu in the range of 0.009-0.090 mg/L it can be concluded that the levels of Pb and Cu in seawater has exceeded the levels were of 0,008 mg/L. For sediment samples obtained that Pb levels were around 1,78-7,73 mg/kg while for Cu 15.86-68.88 mg/kg so Cu in sediment was up to 30 mg/kg while the levels of Pb did not exceed the tolerance limits of 33 mg/kg.
Pengaruh Model Pembelajaran Kooperatif Tipe NHT (Numbered Heads Together) Terhadap Hasil Belajar Siswa Kelas XI IPA SMA Negeri 1 Dolo Pada Materi Pelajaran Kimia Koloid Febiliyanti, Rezha; Tiwow, Vanny M.A.; Gonggo, Siang Tandi
Jurnal Akademika Kimia Vol 3, No 2 (2014)
Publisher : Universitas Tadulako

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Abstract

This research is motivated by low achievement and lack of chemistry students in learning activities especially on the subject of colloids. Based on observations in SMA Negeri 1 Dolo, it has known that the process of teaching and learning suggests that teachers in teaching chemistry concepts and theories through learning activities centered on the teacher or just direct instruction, students were not actively engaged in activities and less opportunity to develop the students thinking process, so the learning process tends boring and turned to student learning laziness. These problems could be overcome by using a type of learning model NHT (Numbered Heads Together). This study aims to figure out the Effects of Cooperative Learning Model Type NHT (Numbered Heads Together) on Student Results of Class XI IPA SMAN I Dolo on topic Colloids. The population in this study was the students of class XI SMA Negeri 1 Dolo 2012/2013 school year, and the research sample was 33 students of class XI IPA 3 as the experimental class (learning by using NHT), and 34 students of class XI IPA 2 as a control class (direct learning). Data were obtained by providing post-test to both samples group. After that, the data were analyzed to test the hypothesis by using one tail t-test. The average and the deviation standard obtained for the experimental class was 64.15 and 10.75. While the average and deviation standard for control class was 53,03 and 10,21. Based on t-test analysis, it can be concluded that the learning outcomes of students who use cooperative learning model NHT (Numbered Heads Together) is higher than student learning outcomes using direct instructional model.
Penentuan Kadar Flavonoid dan Vitamin C dalam Umbi Bawang Hutan (Eleutherine bulbosa (Mill) Urb) yang Berasal dari Desa Matantimali Kabupaten Sigi Karmila, Karmila; Jura, Minarni R.; Tiwow, Vanny M. A.
Jurnal Akademika Kimia Vol 7, No 2 (2018)
Publisher : Universitas Tadulako

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Abstract

This study aimed to determine flavonoids and vitamin C levels contained in forest onion bulbs (Eleutherine bulbosa (Mill) Urb). Determination of the levels of flavonoids in forest onion bulbs extracted by maceration in etanol-HCl 1%, while vitamin C is extracted with 96% ethanol. Flavonoids and vitamin C levels in samples of forest onion bulbs were determined using UV-Vis spectrophotometer. The result showed that the flavonoids levels obtained was as much as 13.4058 mg/ 100 g, while vitamin C levels was as much as 31.678 mg/100 g.
Analisis Kadar Kalsium (Ca) dan Fosforus (P) pada Limbah Sisik dan Sirip Ikan Mujair (Oreochromis mossambicus) dari Danau Lindu Sulawesi Tengah Tiwow, Vanny M. A.; Hafid, Inda Widiarti; Supriadi, Supriadi
Jurnal Akademika Kimia Vol 5, No 4 (2016)
Publisher : Universitas Tadulako

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Abstract

The most fish species live in lake Lindu is mujair fish with the average number production of 1080 per day. The scales and fins of mujair fish are the biggest waste that is produced from the processing of this fish and they were just thrown away, which can pollute the environment. The aim of this study is to analyze the level of calcium (Ca) and phosphorus (P) on waste of mujair fish (scales and fins) from the lake Lindu as a basic ingredient of a liquid organic fertilizer. Samples of the scales and fins were taken from a seller mujair fish at Touwa street Palu. To analyze the level of calcium (Ca) and phosphorus (P) from the scales and fins was used a Spectrodirect. Based on the results of the analysis, the average of level of calcium (Ca) in the scales and fins was 4.98 mg/L and 33.33 mg/L, while the average of level of phosphorus (P) was 73.33 mg/L and 145.33 mg/L. The average concentration of dry weight of Ca in samples of the scales was 3,32 mg/kg and the fins was 22,22 mg/kg. The average concentration of the dry weight of P in samples of the scales was 48,88 mg/kg and the fins was 96,88 mg/kg. The results of this analysis showed that the highest concentration of calcium (Ca) and phosphorus (P) was in the fins of mujair fish.
Penggunaan Model Pembelajaran Kooperatif Tipe Think-Pair-Share (TPS) Pada Pokok Bahasan Struktur Atom Untuk Meningkatkan Hasil Belajar Siswa Kelas X SMA Negeri 2 Palu Fajaryanti, Desi Eka; Tiwow, Vanny M. A.; Rahman, Nurdin
Jurnal Akademika Kimia Vol 3, No 3 (2014)
Publisher : Universitas Tadulako

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Abstract

The purpose of this research was to investigate the students’ learning outcomes toward the use of cooperative learning model of Think Pair Share (TPS) on the topic of atomic structure to the tenth year students of SMA 2 Palu. The method used was an experimental research. The population was the tenth year students of SMA 2 Palu in the academic year of 2012/2013. The research used purposive sampling technique (based on the specific reason: the two classes have the same average scores of class). The sample consisted of 32 X-A students as the experimental class (Think Pair Share (TPS) technique) and 32 X-D students as the control class. The data collection was through test on atomic structure. The testing of research data used statistic analysis one tale t-test (right) by employing its prerequisite test of normality and homogeneity. The average score of the experimental class was 12.63 with the deviation standard of 2.82 and of the control class was 9.89 with the deviation standard of 2.70. Based on the hypothesis testing, it was found that tcounted value >ttable or 3.98 > 1.66 with degree of significance of 00.5 and degree of freedom = 62. The Ho was rejected. It is concluded that the learning outcome by using cooperative learning of Think Pair Share technique on the topic of nuclear structure is higher than that of the conventional technique.
Penggunaan Multimedia Pada Materi Klasifikasi Zat Di Kelas VII SMP Negeri 1 Palu Secsiolita, Raisa; Pursitasari, Indarini Dwi; Tiwow, Vanny M. A.
Jurnal Akademika Kimia Vol 4, No 2 (2015)
Publisher : Universitas Tadulako

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Abstract

This study was conducted to seek the use of instructional media multimedia-based to supportintegrated science learning especially on chemical materials. This instructional media was used to assistteachers in teaching of chemical materials to improve learning outcomes of students in the class VIIat the State Junior High School 1 Palu. The population in this study were 528 students class VII atthe State Junior High School 1 Palu. The sample in this study was 32 students of class VII M as anexperimental class and 33 students of class VII K as the control class. The results of the data analysisobtained an average value (χ1) of experiment class was 84.96 with a standard deviation of 6.21 and theaverage value (χ2)of control class was 82.16 with a standard deviation of 9.69. The results of hypothetictesting was tc = 4.137 and tt = 1.67 with a significance level α = 0.05. Based on the results it can beconcluded that the use of multimedia in the material of substance classification gave positive effect onthe learning outcomes of students in the Class VII at the State Junior High School 1 Palu.
Co-Authors Adrianton A. Afadil Agreistin E. Peole Alfiani Alfiani Angriani, Eva Baharuddin Hamzah Burhan Burhan, Burhan Dhamayanti, Noviasri Diah, Anang Wahid M. Enny Adelina Fajaryanti, Desi Eka Fatma Dhafir Fatmah Dhafir Febiliyanti, Rezha Hafid, Inda Widiarti Herlina Herlina Hildawianti, Hildawianti Hj. Musdalifah Nurdin I Made Tangkas Iffatunniswah Suhud Indarini Dwi Pursitasari Irna Vidianawati Irwan Irwan Irwan Said Karim, Kaharudin karmila karmila Kasmiati Kasmiati Kasmudin Mustapa, Kasmudin Lepongbulan, Winda Lestari Alibasyah Lestari M.P Ali Basyah Marrey Lanuhung Ambomide Mega Silvia Mestawaty Mestawaty Mildha Y. Charin Minarni Rama Jura Minarni Rama Jura Moh. Sahril Nirmala Nirmala Novianti, Muli Nurdin Rahman Paulus Hengky Abram Ramadhan, Sofyan Ramlah Ramlah Ratman Ratman Ratman Ratman Ratman Ratman Rosita Rosita Santi Santi Sarjan N. Husain Sarmilah Sarmilah Secsiolita, Raisa Siang Tandi Gonggo Siti Nuryanti Sri M. Sabang Sri Mulyani Sabang Suherman Suherman Suparman Suparman Supriadi Supriadi Tahril Tanggebono, Iren S. A. Usia, Mirdawati Wardatul Hanifah Wayan A. K. Mahardika Wayan N. Sugiani Yonathan Banua