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All Journal Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia EduChemia: Jurnal Kimia dan Pendidikan Al-Kimia Abdimas Toddopuli: Jurnal Pengabdian Pada Masyarakat Cokroaminoto Journal of Chemical Science Jurnal Abdimas Indonesia : Jurnal Abdimas Indonesia
Nurmalasari, Nurmalasari
Program Studi Kimia Universitas Cokroaminoto Palopo
Religion Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Energy Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Other

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Pengaruh Komposisi Kitosan Terhadap Sifat Biodegradasi dan Water Uptake Bioplastik dari Serbuk Tongkol Jagung Muhammad Nur Alam; Kumalasari Kumalasari; Nurmalasari Nurmalasari; Ilmiati Illing
Al-Kimia Vol 6 No 1 (2018): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v6i1.4778

Abstract

The aim of this research is to obtain the effect of chitosan addition on the properties of biodegradation and water uptake for bioplastics. Bioplastic is made from mixing corncob powder and chitosan using by gliserol as plasticizer. Bioplastic is synthesized for gelatinization temperature of 80oC. Chitosan addition is varied to 2, 4, and 6 g. Based on the analysis, the addition of chitosan can significantly decrease water uptake of bioplastic. The lowest percentage of water uptake was 8.59 % by addition 6 gr chitosan. The highest weight loss percentage of bioplastic was 88,42 % which is obtained by the addition of 2 gr chitosan heaped for 15 days in soil. This indicates that the bioplastic has the high biodegradation properties.  Also, the result of FTIR analysis indicated presence of O-H and N-H groups of bioplastics due to the addition of chitosan and glyserol, but their instensity experienced falling down and shifting at the wave numbers after stockpiled.
Plastic Pyrolisis of Low Density Polyethylene (LDPE) Using Bleaching Earth (BE) Catalyst Become Liquid Fuel Sri Widya Astuti Abidin; Nurmalasari Nurmalasari; Sumiati Sumiati; Ayu Ramadani
Al-Kimia Vol 8 No 1 (2020): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v8i1.10750

Abstract

This study aims to determine the effect of adding Bleaching Earth (BE) catalyst to the amount of liquid fraction by pyrolysis of Low Density Polyethylene (LDPE) and find out the concentration of gasoline and diesel fractions from plastic pyrolysis Low density polyethylene (LDPE). The method in this study is the pyrolysis method (heating without oxygen) and analysis of the liquid fraction resulting from pyrolysis using GCMS (Gas Chromatrographic Mass Spectrometry). In this study, the effect of adding Bleaching Earth (BE) catalyst on Low Densiry Polyethylene plastic pyrolysis is the more catalyst used, the lower the quantity of liquid fraction. Based on GCMS analysis on plastic pyrolysis of Low Density Polyethylene (LDPE) from various variations of Bleaching Earth (BE) catalysts used the optimum concentration was obtained by adding 2.5 g, 5 g, and 7.5 g Bleaching Earth (BE) catalysts to produce fractions higher diesel (C13-C20), 37.04%, 31.04% and 35.59% respectively
Pelatihan Pembuatan Bros Dari Kain Perca bagi Anak Panti Asuhan di Kota Palopo Nurasia Nurasia; Nurmalasari S
Abdimas Toddopuli: Jurnal Pengabdian Pada Masyarakat Vol. 2 No. 1 (2020): Desember 2020
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/atjpm.v2i1.431

Abstract

Kegiatan pelatihan pembuatan bros dari kain perca bagi anak panti asuhann di Kota Palopo bertujuan untuk mengenalkan masyarakat tentang kewirausahaan, memberikan edukasi kepada anak panti asuhan mengenai peluang wirausaha dan pembekalan keterampilan dalam membuat salah satu produk dari kain perca menjadi bros yang unik dan dapat dikomersialkan serta mempererat tali silaturrahmi antara seluruh civitas akademika UNCP dengan masyarakat Kota Palopo. Adapun metode dalam pengabdian ini terdiri 4 tahapan yaitu observasi, persiapan, pelaksanaan dan pendampingan. Pada tahapan pelaksanaan kegiatan dibagi kedalam 2 bagian yaitu pembekalan wirausaha dan praktek pembuatan produk wirausaha dalam hal ini pembuatan bros dari kain perca. Kegiatan ini diikuti oleh 15 orang. Hasil pelatihan berupa bros kain perca yang dapat dikembangakan menjadi aksesoris hijab maupun souvenir pernikahan. Berdasarkan wawancara dengan Pembina panti asuhan, mereka sangat tertarik dengan kegiatan pelatihan dan berharap akan ada keberlanjutan dari kegiatan pelatihan.
Sintesis Katalis NiMo secara Sequential Deposition dan Codeposition pada Silika Mesopori Tercetak Gelatin Nurmalasari Nurmalasari
Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Vol 18, No 1 (2017)
Publisher : Jurusan Kimia FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (469.067 KB) | DOI: 10.35580/chemica.v18i1.4663

Abstract

ABSTRAKKatalis NiMo terimpregnasi pada silika mesopori (SM) tercetak gelatin tulang sapi telah berhasil disintesis serta aplikasinya pada hidrorengkah pelumas bekas telah dilakukan. SM disintesis dengan metode sol-gel pada pH 4 dan dikalsinasi pada suhu 550 ᵒC. SM dianalisis menggunakan FTIR, SSA and TEM. Katalis NiMo(s)/SM dipreparasi menggunakan metode sequential deposition dan NiMo(c)/SM dipreparasi menggunakan metode codeposition. Katalis dioksidasi menggunakan gas O2 dilanjutkan reduksi menggunakan H2, kemudian dikarakterisasi dengan SEM EDS, SAA dan metode gravimetri. Aktivitas katalitik katalis diuji dalam hidrorengkah pelumas bekas pada suhu 450 ᵒC selama 120 menit dibawah laju alir gas H2 15 mL/menit dengan perbandingan katalis dan umpan 1:10. Sampel SM memiliki diameter pori 7,98 nm; luas permukaan spesifik 550 m2/g dan volume pori 1,10 cm3/g dan menunjukkan struktur wormhole-like (seperti lubang cacing). Keasaman total katalis sampel SM, NiMo(s)/SM dan NiMo(c)/SM adalah 5,1; 6,7 dan 7,3 mmol/g.Kata kunci: Katalis, Silika, Deposition, Pelumas, LimbahABSTRACTNiMo catalyst impregnated on mesoporous silica (SM) using gelatin templating of bovine bone as well as its application in hydrocracking of waste lubricant has been evaluated. The SM sample was sinthesized by sol-gel method at pH 4 and calcined at 550 oC. Mesoporous silica material was analyzed by FTIR, SSA and TEM. The NiMo(s)/SM catalyst was prepared by sequential deposition method and the NiMo(c)/SM was prepared by codeposition method. The catalysts were oxidated using O2 gas followed by reduced using H2 gas then characterized according to SEM EDS, SAA, and gravimetric method. Catallity Activity was tested in hydrocracking of waste lubricant at temperature 450 oC with H2 flow rate 15 mL/min for 120 min and catalyst to feed ratio of 1:10. The result showed that the SM sample had pore diameter, spesific surface area and pore volume of 7.98 nm, 550 m2/g and 1,10 cm3/g, respectively and showed wormhole-like structure. Total acidity of SM, NiMo(s)/SM and NiMo(c)/SM samples were 5.1; 6.7 and 7.3 mmol/g.Keywords: Catalyst, Silica, Deposition, Lubricant, Waste
ANALISIS KUALITAS AIR SUNGAI DI KELURAHAN PAJALESANG KOTA PALOPO Putu Darmawan; Sukarti; Nururrahmah Hammado; Nurmalasari
Cokroaminoto Journal of Chemical Science Vol. 5 No. 1 (2023)
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The river water which is passes through Pajalesang, Palopo City, through settlements and several industrial developments. Increasing population and development activities along river basins can lead to increased discharge of waste into water bodies. The river which is used as a place for waste disposal from the activities of the surrounding community can cause a decrease in water quality so that it does not meet the required quality standards for the use of clean water. This research aims to determine the quality of river water in Pajalesang, Palopo City. The research method was used several stages, namely sample preparation, data analysis using physical parameters (odor, taste and color, turbidity, total dissolved solids (TDS)), and data analysis using chemical parameters, namely pH, temperature, and iron (Fe) content. The results showed on the physical parameters of river water in Pajalesang, Palopo City, that it is odorless and when drunk it is tasteless and colorless, the resulting turbidity is 7.91 NTU, the total dissolved solids (TDS) are 70 mg/L and the temperature is 26.8ºC. It means that based on the physical parameters, the results exceeded the threshold standard requirements for clean water quality standards set by Minister of Health Regulation No. 32/2017. The chemical parameters in river water in Pajalesang, Palopo City showed that a pH value of 7.9 and a metal content of iron (Fe) of 0.1mg/L. The results also exceeded the threshold requirements for clean water quality standards based on chemical parameters.
ANALISIS KUALITAS AIR SUMUR UNTUK EKSTRAKSI PATI SAGU Nururrahmah Hammado; Nurmalasari; Laurensius Leong Liwu; Sukarti
Cokroaminoto Journal of Chemical Science Vol. 5 No. 1 (2023)
Publisher : Universitas Cokroaminoto Palopo

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Abstract

The main process in processing sago to obtain sago starch uses large amounts of water. One of the factors that determine the quality of sago starch is the water used for sago starch extraction because water is used to separate sago starch from sago fiber. The purpose of this study was to determine the quality of ground water used for sago starch extraction based on physical and chemical parameters. The physical parameters analyzed were the temperature, turbidity, odor, taste, and color of the ground water, while the chemical parameters analyzed were the concentrations of BOD, COD, Fe, and the pH of the ground water. Water samples were obtained from wells in Jaya Village, Telluwanua District, Palopo City. The preparation and testing of water quality were carried out at the Natural Materials Laboratory of the Faculty of Science, University of Cokroaminoto Palopo, and the Chemical Laboratory of the Makassar City Environmental Service. The results showed that the quality of ground water was based on physical parameters: temperature (26 oC), turbidity 7.54 NTU, ground water was odorless, tasteless, and colorless, while chemical parameters obtained BOD concentration of 2.2 mg/L; COD was 27.3 mg/L, and Fe metal was 4 mg/L. The results indicate that the ground water used for sago starch extraction is still within the threshold required for water quality (Class II). This research can be continued by adding tests for biological parameters, as well as several other parameters such as TDS, hardness, and several other hazardous metals so that the results of this study can be used as consideration for using the ground water as a source of water for sago starch extraction.
Thermal Stability Analysis of Cellulose From Sago Fiber Waste (Metroxylon sago) Nurmalasari, Nurmalasari; Lestari, Sastriana Jaya; Syamsuddin, Mimi; Sukarti, Sukarti; Alam, Muhammad Nur
EduChemia: Jurnal Kimia dan Pendidikan Vol 7, No 2 (2022)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v7i2.13491

Abstract

Sago pulp is a lignocellulosic waste rich in cellulose, so that it can be used optimally as a source of carbon and cellulose. Fixed carbon can be obtained maximally by determining the carbonization temperature. This research aims to determine the temperature of the cellulose sample starting to decompose and the energy required at the time of decomposition. The process of extracting cellulose from sago fiber waste uses NaOH alkalinization for delignification, bleaching with H2O2, and hydrolysis with HCl. Identification of lignin in sago fiber is known by the appearance of the C=O group in the wave region of 1734.01 cm-1 with strong intensity; after extraction, no peak number was found in the extracted cellulose FTIR spectrum. TGA analysis of cellulose underwent two stages of mass change, the first stage of decomposition of water molecules at a temperature of 47°C-203°C obtained a mass decrease of 5.69%, and the second stage of decomposition at a temperature of 287°C-397°C obtained a mass decrease of 58.95%. DSC analysis obtained two thermal properties of physical changes contained in two endothermic peaks, the first peak of water evaporation which required energy of 28,1120 J/g, and the second peak of decomposition, which required energy of 9.6188 J/g.
PENDAMPINGAN PEMBUATAN MIKRO ORGANISME LOKAL (MOL) BAGI MASYARAKAT DESA SALU INDUK Nurmalasari Nurmalasari; Suhaeni Suhaeni
Jurnal Abdimas Indonesia Vol. 1 No. 1 (2021): Mei 2021
Publisher : Perkumpulan Dosen Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53769/jai.v1i1.46

Abstract

Desa Saluinduk merupakan salah satu desa dengan komoditi utama tanaman padi. Kegiatan pengabdian kepada masyarakat ini dilakukan di Desa Saluinduk, Kabupaten Luwu, Provinsi Sulawesi Selatan. Sasaran dalam kegiatan ini adalah kelompok tani Saluinduk. Tujuan kegiatan pengabdian kepada masyarakat ini adalah memberikan pengetahuan kepada petani padi tentang cara memperoleh mikroorganisme lokal (MOL). Metode yang diterapkan dalam kegiatan ini berupa workshop dan pendampingan praktik pembuatan MOL. Hasil pendampingan menunjukkan bahwa petani memahami pengetahuan tentang pupuk organik cair berbahan MOL dan cara pembuatannya.
PELATIHAN DAN PENDAMPINGAN PELAKU USAHA MIKRO KECIL DAN MENENGAH (UMKM) SINGKONG BEKU DI KECAMATAN BARA KOTA PALOPO Nurasia Nurasia; Eva Sohriati; Nurmalasari Nurmalasari
Jurnal Abdimas Indonesia Vol. 2 No. 3 (2022): Juli-September 2022
Publisher : Perkumpulan Dosen Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53769/jai.v2i3.305

Abstract

Kegiatan pelatihan dan pendampingan bagi Pelaku Usaha Mikro Kecil dan Menengah (UMKM) Singkong Beku di Kecamatan Bara Kota Palopobertujuan untuk memberikan keterampilan kepada pelaku usaha dalam proses pengolahan singkong beku dimulai dari tahapan preparasi bahan, produksi bahan dan dilanjutkan dengan pengemasan, penyimpanan dan pendistribusian produk. Kegiatan ini dilaksanakan dalam jangka waktu 2 hari dimana pada hari pertama kegiatan dilakukan wawancara dan observasi terkait permasalahan yang dialami oleh para pelaku usaha dalam proses produksi singkong beku. Pada hari kedua kegiatan, dilaksananakan pelatihan dan pendampingan dalam bentuk pemberian materi dari pakar terkait tahapan persiapan, pengoilahan, pengemasan, distribusi serta pemasaran dari produk singkong beku. Kegiatan pelatihan ini diharapkan dapat memberikan informasi kepada masyarakat pelaku Usaha Mikro Kecil dan Menengah (UMKM) tentang manfaat dari pengolahan pangan yang baik dan menerapkannya dalam proses pembuatan produk dengan mengikuti SOP pengolahan pangan yang baik serta mampu menerapkan keterampilan penggunaan teknologi dalam proses persiapan, pengolahan, pengemasan dan penyimpanan serta pemasaran singkong beku di Kecamatan Bara Kota Palopo.
PENDAMPINGAN PELAKSANAAN LESSON STUDY BAGI GURU BIOLOGI DI SMA NEGERI 2 PALOPO Eva Sohriati; Nurmalasari S.; Nurasia Nurasia; Irwan Ramli; Khaerati Khaerati
Jurnal Abdimas Indonesia Vol. 3 No. 3 (2023): Juli-September 2023
Publisher : Perkumpulan Dosen Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53769/jai.v3i3.533

Abstract

Kegiatan pendampingan pelaksanaan lesson Study bagi guru biologi di SMA Negeri 2 Palopo bertujuan untuk meningkatkan keterampilan guru dalam merancang proses pembelajaran di dalam kelas berbasis lesson study dengan tujuan agar dapat meningkatkan keaktifan peserta didik dalam proses pembelajaran sehingga dapat meningkatkan hasil belajar peserta didik khususnya pada mata pelajaran biologi. Kegiatan ini dilaksanakan selama 1 bulan yakni pada bulan Juli 2023. Kegiatan dilaksanakan dalam 3 tahapan yakni perencanaan, pelaksanaan dan Evaluasi. Pada tahapan perencanaan tim pengabdian melakukan observasi awal dan wawancara dengan pihak sekolah terkait permasalahan guru biologi disekolah. Pada tahapan pelaksanaan dilakukan melalui kegiatan pelatihan penyusunan bahan ajar atau kegiatan penyususnan lesson plan oleh guru model, dilanjutkan dengan tahapan pelaksanaan pembelajaran didalam kelas (do) dan diakhiri dengan kegiatan see yang merupakan refleksi dari pelaksanaan kegiatan didalam kelas. Adapun hasil yang diharapkan dari kegiatan ini adalah meningkatnya keterampilan guru dalam mengajar dan meningkatkan keaktifan serta hasil belajar peserta didik. Hasil dari kegiatan lesson study terlihat adanya peningkatan keaktifan siswa dalam proses pembelajaran didalam kelas.
Co-Authors Alam, Muhammad Nur Ayu Ramadani Eva Sohriati Hammado, Nururrahmah Illing, Ilmiati Khaerati Kumalasari Kumalasari Laurensius Leong Liwu Lestari, Sastriana Jaya Muhammad Nur Alam Nurasia Nurasia Nurasia Putu Darmawan Ramli, Irwan Sri Widya Astuti Abidin Suhaeni Suhaeni Sukarti Sukarti Sumiati Sumiati Sumiati Sumiati Syamsuddin, Mimi