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All Journal Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Akademika Kimia Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Journal of Applied Science, Engineering, Technology, and Education Jurnal Pengabdian kepada Masyarakat Nusantara Ideguru: Jurnal Karya Ilmiah Guru Jurnal Riset Pendidikan MIPA Mattawang: Jurnal Pengabdian Masyarakat Quantitative Economics and Management Studies Panrannuangku Jurnal Pengabdian Masyarakat Media Eksakta Jurnal Akademika Kimia Jurnal Ilmu Pendidikan Indonesia Jurnal Akademika Kimia
Purnama Ningsih
Program Studi Pendidikan Kimia, Fakultas Keguruan Dan Ilmu Pendidikan, Universitas Tadulako, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Pengaruh Konsentrasi Surfaktan dan Perbandingan Volume Emulsi dengan Volume Fasa Eksternal Pada Ekstraksi Ion Merkuri Menggunakan Teknik Emulsi Membran Cair Hidayah, Nurul; Hamzah, Baharuddin; Ningsih, Purnama
Jurnal Akademika Kimia Vol 6, No 3 (2017)
Publisher : Universitas Tadulako

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Abstract

Mercury ion extraction has been done using emulsion liquid membrane technique a research. The aim of the study is to determine the optimal conditions at the extraction process of mercury ion with research variables, namely variations of the surfactant concentration and the volume ratio of emulsion and external phase (Ve:Veks). In this study, the sample was 20 mg/L of Hg2+ ions in concentration. The concentration of mercury ions remaining in the sample after extraction were analyze using a UV-Vis Spectrophotometer at a wavelength of 490 nm using ditizon as complexation. The optimum condition far varying concentrations surfactant was 2% and the volume ratio of emulsion (Ve) and external phase (Veks) was 1:5 with the percentage of extraction respectively 47.65% and 56.80%.
Penentuan Perbandingan Volume Fasa Membran dan Volume Fasa Internal serta Lama Waktu Ekstraksi pada Proses Ekstraksi Ion Merkuri Menggunakan Teknik Emulsi Membran Cair Genefefa T., Fulgensia; Hamzah, Baharuddin; Ningsih, Purnama
Jurnal Akademika Kimia Vol 6, No 3 (2017)
Publisher : Universitas Tadulako

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Abstract

This study aimed to determine the optimum condition on the extraction process of mercury ions with the variables of study on the ratio of membrane phase volume and internal phase volume (Mp:Ip) and the extraction time which will provide the greatest percent extraction. Sample used in this study was an artificial sample containing Hg(II) ions with a concentration of 10 mg/L. Hg(II) ions will be distributed into internal phase through membrane phase formed from a mixture of surfactants, kerosene and chelating compounds. Concentration of mercury ions remained in the samples was analyzed using a UV-VIS spectrophotometer at a wavelength of 490 nm with ditizon as a complex. The optimum condition was achieved at a volume ratio of membrane phase (Mp) with internal phase (Ip) of 2:2, and the extraction time was for 10 minutes, where percent extractions were 66.11% and 82.23%, respectively.
Analisis Senyawa Metabolit Primer Pada Jamur Merang (Volvariela volvaceae) Di Daerah Perkebunan Kelapa Sawit Lalundu Wahidah, Nur; Ratman, Ratman; Ningsih, Purnama
Jurnal Akademika Kimia Vol 6, No 1 (2017)
Publisher : Universitas Tadulako

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Abstract

Lalundu region is located in Central Sulawesi where we can find many mushrooms (volvariela volvaceae). The aim of this study is to determine the levels of primary metabolites of mushroom at the regional oil palm plantations Lalundu. The analysis of carbohydrates level was using a UV-vis Spectrophotometer, for protein using a Spectro Direct while for fat by soxhlet. Based on the results of the analysis, the levels of carbohydrates obtained was 7.35% in 1 gram mushroom. The protein content obtained was 1,67% while the fat content results were 2.53%. These indicate that the primary metabolite levels in mushroom at Lalundu region are very high compared to literature.
Penerapan Model Pembelajaran Problem Based Learning (PBL) terhadap Hasil Belajar Siswa SMAN 7 Palu Kelas XI pada Materi Larutan Penyangga Beddu, Amsar T.; Sabang, Sri Mulyani; Ningsih, Purnama
Jurnal Akademika Kimia Vol 7, No 1 (2018)
Publisher : Universitas Tadulako

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Abstract

This research aims to investigate the result of a study in applying the model of problem-based learning (PBL) the students of SMAN 7 Palu on the topic buffer. This method use quasy experiment with pretest-posttest control group design. The population is a class XI students of SMAN 7 Palu, where the sample is a 23 students in class XI IPA 3 as the experimental group and 23 students in class XI IPA 4 as the control group, which is determined by purposive sampling. The result of student learning to the average value of the experimental class is bigger than for class control experiment was 82.61 and for the control, class is 8.65. Test normality using the Kolmogorov-Smirnov test values obtained for the experimental class Sig 0.20 > 0.05 and class control 0.20 > 0.05, it means that both at data are normally distributed. Homogeneity test using the test statistics Lavene which gained value of Fhitung 0.37 > 0.54 Ftabel for experimental classes.200 Sig > 0.05 and for grade control 0.20 > 0.05, it means that both of normally distributed data, there is similarities variant between a group or the means homogeneous. Testing hypothesis use t-test two parties where the significance value of 0.06, it means at the value of Sig > 0.05, that Ho rejected and Ha accepted. Based on the statistical test, PBL learning model on material buffer has a positive influence on results for students at SMAN 7 Palu
Pengaruh Model Pembelajaran Advance Organizer Terhadap Hasil Belajar Siswa SMA Negeri 3 Sigi pada Materi Larutan Elektrolit dan Non Elektrolit Maryam, Maryam; Ratman, Ratman; Ningsih, Purnama
Jurnal Akademika Kimia Vol 7, No 2 (2018)
Publisher : Universitas Tadulako

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Abstract

This study aimed to determine the influence of advance organizer learning model toward learning achievements of students at SMA Negeri 3 Sigi on the topic electrolyte and non-electrolyte solutions. This study was a quasi-experiment with pretest-posttest control group design using two groups of students, i.e. 34 Class X B as an experimental group , and 34 Class X A as a control group. Data of learning achievements of students was analyzed using t-test two parties statistical analysis. Results showed that the average values of experiment class (X1) was 77.15 with a standard deviation of 11.59, while the average values of control class (X2) was 68.44 with a standard deviation of 10.73. This testing hypotheses with statistical t-test two parties obtained -ttable ≤ tcount ³ + ttable (tcount = 10.89 and ttable = 2.00) with a significant level a = 0.05, and degrees of freedom 66. Therefore, H0 was rejected, and HI was accepted. This study concluded that advance organizer learning model influenced learning achievements of students at SMA Negeri 3 Sigi on the topic electrolytes and non-electrolyte solutions.
Serbuk Dari Limbah Cangkang Telur Ayam Ras Sebagai Adsorben Terhadap Logam Timbal (Pb) Satriani, Dewi; Ningsih, Purnama; Ratman, Ratman
Jurnal Akademika Kimia Vol 5, No 3 (2016)
Publisher : Universitas Tadulako

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Abstract

The aim of this study is to determine the optimum time and weight required for eggshell powder when it absorbs Pb, and to determine the adsorption capacity of the eggshell powder at the optimum condition for Pb with the shaking time variation of 10, 20, 30, 40 and 50 minutes. The weight variation of adsorbent is 0.25, 0.50, 0.75, 1 and 1.25 grams. The work steps in this study were production of the eggshell powder as the adsorbent, making of a solution of Pb 60 ppm, and determination the Pb concentration at equilibrium using a spectrophotometer spektrodirect respectively. The results obtained after the adsorption process for the time variation was 30 minutes, this optimum time giving %Pb absorbed was 94.65%. The weight variation of adsorbent is 1 gram, this optimum weight giving %Pb absorbed was 98.91%. Furthermore, the absorption capacity adsorbent of eggshell powder in both optimum conditions was 0.078 mg Pb/mg adsorbent.
Efek Ekstrak Buah Srikaya (Annona Squamosa L.) Terhadap Penurunan Tekanan Darah Pada Mencit (Mus musculus) Fitriani, Fitriani; Walanda, Daud K.; Ningsih, Purnama
Jurnal Akademika Kimia Vol 6, No 1 (2017)
Publisher : Universitas Tadulako

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Abstract

The research aim is to determine the effect of sugar-apple fruit extract on the reduction of blood pressure in mice as the tested animal. The sugar-apple extract was obtained through maceration method with the ratio of sugar-apple fruit powder and water 1:10, after that the heating was done to produce the extract in solid form, then the potassium content was measured by using a spectrophotometer and male mice were induced by adrenaline injection, namely epinephrine. The mice were divided into 5 groups randomly with different treatment. P1 was as a negative control (-), P2, P3, P4 were given the sugar-apple extract with the doses of 50, 100 and 150 mg/kg BW respectively, while P5 was as positive control (+) that was given captopril. The data obtained were analyzed by the statistical analysis, the analysis of variance (ANOVA) and was followed by Duncan’s test. The result obtained that on preclinical testing revealed that the sugar-apple extract was proven to reduce the blood pressure of mice and the effective extract was the concentration of 150 mg/kg with the average blood pressure of 48 mmHg.
Adsorpsi Logam Timbal (Pb) dari Larutannya dengan Menggunakan Adsorben dari Tongkol Jagung Ningsih, Dwi Arista; Said, Irwan; Ningsih, Purnama
Jurnal Akademika Kimia Vol 5, No 2 (2016)
Publisher : Universitas Tadulako

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Abstract

Heavy metals will cause environmental problems. One of the efforts that can minimize level of heavy metal from their solutions is to reduce heavy metals content, so that safely discarded at sea/river. One such way to reduce level of heavy metals is by adsorption. Some agricultural waste are potential as an adsorbent, namely a corncob. Therefore, the aim of this study is to determine the optimum weight of adsorben from corncob to absorb Pb(II) from its solution. In this study, the corncob was used as an adsorbent to adsorb Pb(II) by using three methods, namely powder, charcoal and activated charcoal with a solution of HCl. The parameters tested were amount of adsorbent or weight of the powder, charcoal and activated charcoal by the weight variation of 20, 40, 60, 80 and 120 mg to determine the optimum conditions in adsorbing Pb(II). The optimum conditions are obtained for the powder was 80 mg with the absorption of 96.92%, the charcoal is 80 mg with absorption of 97.29%, and the activated charcoal was 40 mg with the absorption of 94.70%.
Analisis Bioetanol dari Limbah Kulit Buah Sukun (Artocarpus altilis) dengan Cara Hidrolisis dan Fermentasi Fardiana, Fardiana; Ningsih, Purnama; Mustapa, Kasmudin
Jurnal Akademika Kimia Vol 7, No 1 (2018)
Publisher : Universitas Tadulako

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Abstract

This study aimed to determine glucose and ethanol levels from fermentation of peel waste of breadfruit. Glucose level was determined using UV-Vis spectrophotometer and then continued with fermentation of glucose from hydrolysis process using yeast tape (saccharomyces cerevisiae) for 3 days to produce bioethanol. The step in this study was the sample preparation, the acid variations in hydrolysis with HCl, H2SO4, H3PO4 (10%) and the fermentation. Determination of ethanol from the fermentation of glucose was measured by using alkoholmeter. The highest glucose level was 0.68% which was from hydrolysis using HCl and the highest ethanol level was 9% which obtained from the fermentation of glucose by using HCl hydrolysis. The conclusion shows that the type of acid used to reach optimum hydrolysis of the breadfruit’s peel is HCl.
Pemanfaatan Arang Aktif Biji Kapuk (Ceiba Pentandra L.) sebagai Adsorben Logam Timbal (Pb) Wahyuni, Sri; Ningsih, Purnama; Ratman, Ratman
Jurnal Akademika Kimia Vol 5, No 4 (2016)
Publisher : Universitas Tadulako

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Abstract

Lead is a heavy metal that has been a problem particulary in the aquatic environment. This reseach is an effort to reduce these problems by using adsorption method that utilizes an adsorbent of cotton seeds to Pb. Cotton seeds were chemically activated trough the process using a solution of 85% H3PO4. This study aims to determine the optimum weight of activated charcoal an adsoption capacity in optimum condition by using two parameter variations of weight of 0,3; 0,6; 0,9; 1,2 and 1,5 grams and Pb concentration of 10, 20, 30, 40 and 50 ppm by using a contact time of 30 minutes. Pb concentration was measured using a spectrophotometer spectro-direct. The result obtained that optimum weight of active charcoal cotton seeds was 1,2 grams with a percentage of 97,76% uptake an adsorption capacity in optimum condition Pb was 0,05 mg/mg activated charcoal.
Co-Authors A. Makuasa, Dian Anriani Ade P. Maedja Afadil Agussatriana Amin, Alif Hidayatullah Amiruddin Kade Anak Agung Gede Sugianthara Andrianto Handojo, Andrianto Anggreni, Afrillia Arfiani, Arfiani Azzajjad, Muhammad Fath Baby Melyta Pallar Baharuddin Hamzah Baharuddin Hamzah Beddu, Amsar T. Boroallo, Paramitha Yemima Dandi Daud Karel Walanda Dewi Satria Ahmar Dian Anriani A. Makuasa Eksari Ekasari Fahrul Riski Fardiana, Fardiana Fathul Khair Fauzhia, Hariati Fitriani Fitriani Genefefa T., Fulgensia Hendrik Kurniawan Hikmawandari, Hikmawandari I Made Subrata, I Made Irwan Irwan Irwan Said Irwan Said Jamaluddin Sakung Jamaludin M. Sakung Kaipal, Kaipal Kasmudin Mustapa Lage, Mersed Djein Leonardo Leonardo Luh Putu Ratna Sundari Magfirah Mardiati Sulistyowati Maryam Amalia Maryam Maryam Megawati Megawati Mery Napitupulu Miftahul Jannah Mihra, Mihra Minarni Rama Jura Mubarik Mubarik Muh. F. I. Ote Muhammad Fakhrul Hardani Muhammad Zaky Nasution, Annio Indah Lestari NB Prihantini, NB Ningsih, Dwi Arista Nining Prihantini, Nining Nur wahidah Nurfianti NURLAELA NURLAELA Nurlia L. Radjabani Oktavia, Rini Pathuddin Paulus H. Abram Paulus Hengky Abram Poppy Fitra Wahyuni Rahma, Nur Ratman Ratman Ratman Ratman Ratman Ratman Reny, Reny Rezki Rezki Ririen Hardani Satriani, Dewi Singgih Sugeng Santosa Siti Fatimah Siti S. K. Pandjo Sitti Aminah Sitti Rahmawati Sri Hastuti Virgianti Pulukadang Sri Mulyani Sabang Sri Wahyuni Suherman Suherman Sulviana Supriyatman, Supriyatman Tiwow, Vanny Maria Agustina Tri Santoso Vivi D. A. Sangkota