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All Journal Jurnal Pendidikan Kimia Indonesia Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Akademika Kimia Jurnal SOLMA JMM (Jurnal Masyarakat Mandiri) Agritechnology : Jurnal Teknologi Pertanian Jurnal Inovasi dan Teknologi Pembelajaran (JINOTEP) Kajian dan Riset Dalam Teknologi Pembelajaran Patria : Jurnal Pengabdian Kepada Masyarakat Jurnal Riset Pendidikan MIPA Jurnal Abdimas Ilmiah Citra Bakti (JAICB) Mattawang: Jurnal Pengabdian Masyarakat Jurnal Akademika Kimia Jurnal Ilmu Pendidikan Indonesia Jurnal Akademika Kimia Jurnal Pendidikan MIPA
Mery Napitupulu
Pendidikan Kimia FKIP Universitas Tadulako Palu Indonesi 94119
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Biocharcoal Dari Kulit Kakao (Theobroma cacao L)Untuk Mengadsorpsi Ion Logam Timbal Pb Podala, Katherina; Walanda, Daud K.; Napitupulu, Mery
Jurnal Akademika Kimia Vol 4, No 3 (2015)
Publisher : Universitas Tadulako

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Abstract

Cacao is a commodity crop growth in the plantation farmers, particularly in Central Sulawesi. Processed of the cocoa fruits are mainly as the food products. Furthermore, the cocoa bark just become rubbish. This study aims to utilize the waste of cocoa bark to be used as biocharcoal to adsorb lead metal ions. The method used was spectrophotometry, where the lead ions concentration absorbed was measured using a Spectrodirect spectrophotometer. The results showed that at the optimum contact time 90 minutes, the lead ion capacity adsorption was 97% and the lead weight adsorbed was 25.26 mg/g. The optimum weight of 60 mg, where the lead ions capacity adsorption was 96.88% and the lead weight adsorbed was 25.22 mg/g. The optimum adsorption capacity was 40 ppm, where the lead ions adsorption obtained was 99.61% and the lead weight adsorbed was 10.84 mg/g.
Biocharcoal dari Biji Salak (Salacca edulis) sebagai Adsorben Terhadap Kromium Pongenda, Rudy Christiyanto; Napitupulu, Mery; Walanda, Daud K.
Jurnal Akademika Kimia Vol 4, No 2 (2015)
Publisher : Universitas Tadulako

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Abstract

Salak, snake skin fruit, is one of many kind fruit that is much preferred by people because its taste is sweet, crunchy and because it has a high nutrient content and have good prospects for cultivated. During this time, only flesh fruit of salak are utilized and the seed become waste. Therefore, it has been done a research about biocharcoal of salak seed (salacca edulis) as an absorbent for chromium. The method used in this study was a laboratory experiment using salak seeds biocharcoal as the adsorbent for chromium, concentration of absorbed chromium was measured by using a spectrodirect spectrophotometer. The results showed that the optimum time for adsorption of metal ion chromium obtained was 60 minutes with the absorption efficiency of 99.67%, while the optimum weight for absorption of metal ion chromium obtained was 80 mg with the absorption efficiency of 99.70% and the optimum concentration for absorption of metal ion chromium was 80 ppm with the absorption efficiency of 99.77%.
Analisis Vitamin C Pada Buah Pepaya, Sirsak, Srikaya Dan Langsat Yang Tumbuh Di Kabupaten Donggala Cresna, Cresna; Napitupulu, Mery; Ratman, Ratman
Jurnal Akademika Kimia Vol 3, No 3 (2014)
Publisher : Universitas Tadulako

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Abstract

Vitamin C is known as ascorbic acid. The function of vitamin C is to help the synthesis of collagen and antioxidants that the body needs. Vitamin C can be obtained from fruits, and each fruit had different levels of vitamin C. This study aims to determine the levels of vitamin C in the fruit papaya, soursop, sugar apple and complexioned fruit. This study uses a volumetric method that uses a solution of iodine (I2) as the titer, and using starch as an indicator, and each piece studied every day for three days with the same treatment. The results obtained levels of vitamin C in papaya fruits in a row are the first day of 46.89 mg, the second day 34.6 mg, third day and 22.88 mg. Vitamin C in the complexioned fruits are the first day 82.28 mg, the second day 61.31 mg, and third day 37.14 mg. Vitamin C in the sweetsop fruit are the first day 49.83 mg, the second day 35.2 mg, and third day 20.46 mg. And the soursop fruit vitamin C content was obtained on the first day 62.42 mg, the second day 33.44 mg, and third day of 23.14 mg. The results demonstrated that levels of Vitamin C in four fruits had decreased each day since the time of storage.
ANALISIS LOGAM ZINK (Zn) DAN BESI (Fe) AIR SUMUR DI KELURAHAN PANTOLOAN KECAMATAN PALU UTARA Rahayu, Budi; Napitupulu, Mery; Tahril, Tahril
Jurnal Akademika Kimia Vol 2, No 1 (2013)
Publisher : Universitas Tadulako

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Abstract

A study is carried out to determine the metal content of zinc (Zn) and iron (Fe) in well water samples by AAS using a wet method of destruction through the addition of concentrated HNO3 as a solvent and forming acidic. The measuring the levels of zinc in the sample performed at a wavelength (λ) = 213 nm and measuring the levels of iron in the sample performed at a wavelength (λ) = 248.3 nm. The results obtained for the levels of zinc metal respectively are 0.3121 mg/L, 0.1175 mg/L, and 0.0478 mg/L, and iron metal levels are 0.394 mg/L, 0.546 mg/L, and 0.324 mg/L. These data indicate the metal content of zinc in wells water Pantoloan Village North Palu Palu district is still below the threshold value while the metal content of iron in wells near the sea (sampel B) is above the standard threshold value defined in the Rules of Ministry of Health Decree No. 492 /2010.
Analisis Sulfur (S) dan Besi (Fe) pada Limbah Cair Panas Pembangkit Listrik Tenaga Uap (PLTU) Di Kelurahan Panau Kecamatan Palu Utara Madjid, Nurhidayah Abd.; Napitupulu, Mery; Said, Irwan
Jurnal Akademika Kimia Vol 7, No 1 (2018)
Publisher : Universitas Tadulako

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Abstract

This research aims to find the levels of sulfur and iron in the liquid waste heat of PLTU discarded into bodies of water at Panau village Subdistrict north of Palu. This research used spectrodirect for the analysis. The result of the research showed that the waste not contents the sulfur or iron, but contents the sulfite. Based on measurements using wavelengths of 405 nm was found that the sample contains 3.12 mg/L sulfite compounds.
Uji Aktivitas Antioksidan Ekstrak Daun Binahong (Anredera cordifolia (Tenore) Steenis) Dengan 1,1-Difenil-2-Pikrilhidrazil (DPPH) Menggunakan Spektrofotometer UV-Vis Parwati, Ni Kadek Fina; Napitupulu, Mery; Diah, Anang Wahid M.
Jurnal Akademika Kimia Vol 3, No 4 (2014)
Publisher : Universitas Tadulako

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Abstract

Testing of antioxidant activity of binahong (anredera cordifolia (tenore) steenis) leafs extracts has been done with 1,1-diphenyl-2-picrylhydrazyl (DPPH) using UV-Vis spectrophotometer. The aim of this research was to determine the antioxidant activity of binahong leafs extracts. Concentration of 1,1-diphenyl-2-picrylhydrazyl (DPPH ) after addition of binahong leafs extracts was determined using UV-Vis Spectrophotometer. Various concentrations of binahong leafs extracts were 20 ppm, 40 ppm, 60 ppm and 80 ppm. Vitamin C was the positive control used at similar variation concentrations, whereas DPPH solution dissolved in absolute ethanol was as the negative control. The results showed that the IC50 values obtained for binahong leafs extracts and vitamin C were 40.27 ppm and 49.20 ppm. Based on the IC50 data, it can be seen that binahong leafs extracts are stronger antioxidant than vitamin C.
ANALISIS LOGAM TEMBAGA (Cu) PADA BUANGAN LIMBAH TROMOL (TAILING) PERTAMBANGAN POBOYA Nuriadi, Nuriadi; Napitupulu, Mery; Rahman, Nurdin
Jurnal Akademika Kimia Vol 2, No 2 (2013)
Publisher : Universitas Tadulako

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Abstract

The analyses of Copper (Cu) has been performed in the sample of drum waste (tailings) gold mining in Poboya by using Atomic Absorption Spectrophotometry (AAS) method.The alkaline destruction by the addition of HNO3 and HClO4 has been done by heating then distilled. The absorbance was measured at a wavelength (λ) = 324.7 nm on copper metal analysis. From the analysis,it was obtained copper metal in each drum consist of as follows drum A. 204.92 mg/kg, drum B 151.85 mg/kg, drum C 79.51 mg/kg, drum D 167.78 mg/kg, drum E 190.68 mg/kg, with the overall average value of 158.94 mg/kg. The data shown that the area gold mining at Poboya contain copper metal ion in high quantity.
Biocharcoal dari Serbuk Gergaji Kayu Cempaka (Elmerrillia ovalis Miq) serta Daya Adsorpsinya pada Zink dan Tembaga Susilawati, Niluh Eka; Walanda, Daud K.; Napitupulu, Mery
Jurnal Akademika Kimia Vol 4, No 2 (2015)
Publisher : Universitas Tadulako

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Abstract

Cempaka wood is a typical wood in Sulawesi Island and Maluku archipelago. This wood can be used for wood industry particularly for the manufacture of furniture. However, not only furniture can be produced from the wood but also the sawdust as the waste. This research utilized the sawdust of cempaka wood as biocharcoal to adsorb zinc and copper ions included in liquid organic fertilizer complement based on variation of weight and concentration of biocharcoal. The method used in this study was the spectrophotometry spectroDirect with sawdust of cempaka wood as the adsorbent. The results showed the characteristic of water content of biocharcoal was 4.05% while ash content was 7.75%. The optimum weight of biocharcoal to adsorb zinc ions was 40 mg with the adsorption capacity of 19.97 mg/g while for copper ions was 60 mg with the adsorption capacity of 16.16 mg/g. The optimum concentration of zinc and copper ions than can be adsorbed was 60 ppm with the adsorption capacity of 11.80 mg/g for copper ion and 9.29 mg/g for zinc ion.
Analisis Kadar Flavonoid pada Batang Jarak Pagar (Jatropha curcas L.), Jarak Merah (Jatropha gossypifolia L.), dan Jarak Kepyar (Ricinus communis L.) Kesumasari, Ni Made; Napitupulu, Mery; Jura, Minarni Rama
Jurnal Akademika Kimia Vol 7, No 1 (2018)
Publisher : Universitas Tadulako

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Abstract

This study aimed to determine flavonoids levels contained in each of jatropha plant samples to be used as an alternative affordable free radicals deterrent. The flavonoid content was analyzed using UV-Vis spectrophotometry. Stem of the three samples was extracted using HCl. The results showed that total flavonoids levels contained in each stem of Jatropha curcas L., Jatropha gossypifolia L., and Ricinus communis L. were 3.959 mg/L, 1.309 mg/L, and 0.083 mg/L, respectively.
Adsorpsi Biocharcoal Kulit Durian (Durio zibethinus Murr) Terhadap Ion Kadmium Kusuma, I Gede Yoga Nata; Napitupulu, Mery; Walanda, Daud K.
Jurnal Akademika Kimia Vol 4, No 1 (2015)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2015.v4.i1.7843

Abstract

Research on the adsorption biocharcoal of durian (durio zibethinus murr) bark to cadmium ion has been conducted. Heavy metal ions are toxic and generally as a major pollutant to the environment. Handling of waste containing heavy metal ions, especially Cd2+ ions have been carried out and need to be developed. This study described the ability of biocharcoal (biological charcoal) of durian bark to adsorb Cd2+ ions from their solutions. The method in this study was a laboratory experiment using biological charcoal powder of durian bark as an adsorbent of Cd2+ ions. Concentration of Cd2+ ions absorbed was measured using atomic absorption spectrophotometer (AAS) at a wavelength of 228.8 nm. The results showed the optimum Cd2+ ion absorbed was at 80 mg biocharcoal with the percentage of the Cd2+ ion absorbed up to 93.46%, where the weight of the Cd2+ ion absorbed was 16.62 mg/g. The optimum pH was at 7.0 with the percentage of the Cd2+ ion absorbed up to 97.94%, where the weight of the Cd2+ ion absorbed was 17.42 mg/g. The optimum concentration was at 20 ppm with the percentage of the Cd2+ ion absorbed up to 91.97%, where the weight of Cd2+ ion absorbed was 11.42 mg/g. The maximum absorption capacity of biocharcoal to the Cd2+ ion using the Langmuir isotherm adsorption equation was 33.33 mg/g of biocharcoal.
Co-Authors Afadil Almahdali, Khafifah Anang Wahid M.Diah Areeya Milehman Arwansyah Arwansyah Bau Ratu Budi Rahayu, Budi Cresna, Cresna Daud Karel Walanda Delviana Melego Detris Poba Dwijogo, Wasis D Enar, Rohmala Ersa W. Lakukua Galib, Stefhanny Ginting, Dewi Gleryl F. Novemly Hajerina, Hajerina Hutagaol, Jhon I Komang Jati Purnawan I Nengah Kundera I W. A. Wirawan Ijirana Iriani, Fitri Irwan Irwan Jamaludin M Sakung Kesumasari, Ni Made Kusuma, I Gede Yoga Nata Leonardo Leonardo Lis K. Djaledje Lumbantobing, Ria M., Erni Madjid, Nurhidayah Abd. Masriana Masriana, Masriana Mesakh, Eka Putra Minarni Rama Jura Minarni Rama Jura Miryam B. Kalase Muhammad Agus Muljanto MUHAMMAD ALI Napitupulu, Nurasyah D Nurasyah Dewi Napitupulu Nurdin Rahman Nurhikma, Nurhikma Nuriadi, Nuriadi Parwati, Ni Kadek Fina Poba, Detris Podala, Katherina Pongenda, Rudy Christiyanto Punaji Setyosari Purnama Ningsih Ratman Ratman Ratman Ria Lumbantobing Rita Lefrida Ryka Marina Walanda Sarungallo, Zita Septianingsih, Siti Fathonah Setiawan, I Ketut Ardi Siang Tandi Gonggo Siti Nuryanti Sitti Rahmawati Situngkir, Risma U Solika, Nafikatus Sri Hastuti Virgianti Pulukadang Sri Mulyani Sabang Susilawati, Niluh Eka Tahril Taslima Tiara Maharani, Tiara Walanda, Richard Albert Walanda, Ryka M Walanda, Ryka M. Zarnila, Zarnila