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All Journal Jurnal Natur Indonesia Teknosains: Media Informasi Sains dan Teknologi SINEKTIKA: Jurnal Arsitektur Jurnal Kimia Mulawarman ARTEKS : Jurnal Teknik Arsitektur Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Akademika Kimia EPI International Journal of Engineering Abdi Dosen : Jurnal Pengabdian Pada Masyarakat JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Jurnal Pengabdian kepada Masyarakat Nusantara Jurnal Riset Pendidikan MIPA Mattawang: Jurnal Pengabdian Masyarakat Panrannuangku Jurnal Pengabdian Masyarakat Media Eksakta Jurnal Akademika Kimia Jurnal Akademika Kimia
Baharuddin Hamzah
Pendidikan Kimia University Of Tadulako
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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PENGALIRAN UDARA UNTUK KENYAMANAN TERMAL RUANG KELAS DENGAN METODE SIMULASI COMPUTATIONAL FLUID DYNAMICS Latif, Sahabuddin; Hamzah, Baharuddin; Ihsan, Ihsan
Sinektika Vol 14, No 2: Juli 2014
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Sirkulasi udara yang baik sangat dibutuhkan pada ruang berventilasi alami untuk mencapai kenyamanan termal, karena dapat  mempercepat proses evaporative cooling,pengeluaran panas dan ketersediaan udara segar dalam ruang. Penelitian ini bertujuanmengkaji aliran udara pada Ruang Kelas Gedung Kuliah Bersama Fakultas TeknikUniversitas Hasanuddin di Kabupaten Gowa, agar ditemukan rekayasa pengaliran udarayang dapat mempercepat terjadinya proses pengeluaran panas. Penelitian eksperimentalini menggunakan metode simulasi CFD (Computational Fluid Dynamics). Parameter input dalam simulasi diperoleh melalui  pengukuran di lapangan berupa dimensi ruang kelas, luas bukaan ventilasi, dan parameter iklim mikro. Rekayasa aliran udara dilakukanterhadap tiga perlakuan yaitu kecepatan udara, luas bukaan, serta modifikasi darikecepatan udara dan luas bukaan. Analisis dilakukan untuk mengetahui bagian ruangyang mengalami aliran udara tinggi dan rendah serta mengetahui faktor pendukung dan kendala dengan menggunakan perangkat lunak SolidWorks Simulation 2013. Hasilpenelitian memperlihatkan bahwa sistem ventilasi eksisting ruang-ruang kelas dapatmendistribusikan pergerakan udara yang nyaman di dalam ruang antara 0.25 m/s hingga 1.5 m/s, pada parameter inlet 1 m/s hingga 3 m/s dengan kenyamanan ruangan (51.85%) hingga (85.19%). Setelah dilakukan perbaikan sistem ventilasi pada ruang kelas,kenyamanan ruang dapat ditingkatkan menjadi (96.30%) hingga (100%), dengan rasioluasan bukaan ventilasi (21.60%) dari luas lantai ruangan, dengan rincian luas bukaaninlet (14.50%) dan luas bukaan outlet (7.10%). Disimpulkan bahwa penambahan luas inlet dan outlet dengan rasio yang tepat pada ruang kelas, dapat mengoptimalkansirkulasi udara. Diharapkan agar jendela kaca mati pada ruang-ruang kelas di buka untukmenambah luas inlet dan penambahan luas bukaan dinding outlet bagian bawah, pintusebaiknya di tutup pada saat ruang digunakan.
Analisis Kadar Timbal (Pb) Dalam Daging Kerang Bakau (Polymesoda erosa) Dan Kerang Darah (Anadara granosa) Di Perairan Salule Pasangkayu Sulawesi Barat Rahmawati, Rahmawati; Hamzah, Baharuddin; Nuryanti, Siti
Jurnal Akademika Kimia Vol 4, No 2 (2015)
Publisher : Universitas Tadulako

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Abstract

Bivalve os one marine animals that can efficiently accumulate to heavy metal. This is due to they livein the base layer of the sediment in the aquatic and they are moving very slowly. Therefore, it has beendone a research about the analysis of consentration of lead (Pb) in the bivalve polymesoda erosa sp andthe bivalve anadara granosa at the aquatic of Salule Pasangkayu West Sulawesi has been reported byusing direct spectro. The research’s aim was to analyze concentration of Pb as heavy metal in the bivalvepolymesoda erosa and the anadara granosa sp, The results obtained that concentration of Pb at muddyplaces was higher than at sandy area. Level of Pb showed that Pb exceeds quality standard in both clamswhere in the blood clam was 3.75 mg/Kg and 3.857 in dry weight, while the Mangrove calm showedthe result of 5,00 mg/Kg and 5.25 mg/Kg in dry weight.
Ekstraksi Ion Merkuri MenggunakanTeknik Emulsi Membran Cair dengan Variasi Konsentrasi Benzoil Aseton dalam Fasa Membran dan Variasi pH Fasa Eksternal Sulniawati, Sulniawati; Hamzah, Baharuddin; Abram, Paulus Hengky
Jurnal Akademika Kimia Vol 6, No 4 (2017)
Publisher : Universitas Tadulako

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Abstract

Mercury ion extraction using the liquid membrane emulsion technique with the variation of benzoil aseton concentration in membrane phase and variation of pH of external phase has been done. The sample containing Hg2+ ions with a concentration of 20 mg/L. Variation of benzoil aseton were concentration of 0.01 M, 0.015 M, 0.02 M and 0.025 M, whereas variation of external phase pH used were 1,5; 2; 2,5; 3 and 3,5. The measurement of extraction was conducted by using UV-Vis spectrophotometer. The results showed that the largest percent extraction on the extraction of mercury ions in solution by using liquid membrane emulsion was at a concentration of benzoil aseton 0.02 M with the percentage of extraction 79.33% and the pH external phase 2 with the percentage of extraction 85.30%.
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%.
Penerapan Model Pembelajaran Snowball Throwing Berbantuan Kode SMILES pada Materi Hidrokarbon Terhadap Hasil Belajar Siswa Kelas XI SMA Negeri 5 Palu Djahir, Ahmad Rifaldi; Walanda, Daud K.; Hamzah, Baharuddin
Jurnal Akademika Kimia Vol 3, No 4 (2014)
Publisher : Universitas Tadulako

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Abstract

Snowball throwing learning model is a modification of aquastion technique. This technique is focused on the ability to formulate questions which are combined in a game called snowball throwing. SMILES is a simple chemical notation comprehensive where the scructures of molecules can be found by using ASCII character which representing atom and bond symbol. The study aim is to determine the influence of snowball throwing assisted learning model SMILES code on hydrocarbon material to the learning outcomes of students clas XI in SMA Negeri 5 Palu. This study is experimental with pretest and posttest control group design, in which the samples are students of class XI IPA 2 (n=33) as experimental group while students of clas XI IPA 4 (n=32) as control group. The testing data used t-test statistical analysis one side (right) with pre-requisite test, normality test and homogeneity. The result of data analysis are the score of X1 experiment class is 73.81 with standard deviation is 8.19 while score of X2 control group is 65 with standard deviation is 14.36. Based on testing hypothesis result that tcounted>ttable is 3.05 > 1.67 with significance level 0.05 and confidence level = 63. The results show that H0 is rejected and H1 is accepted then it is concluded that the application of Snowball Throwing assisted learning model SMILES code on hydrocarbon material positively influence to the learning outcomes of students class XI in SMA Negeri 5 Palu.
KANDUNGAN MERKURI (Hg) DALAM AIR LAUT, SEDIMEN, DAN JARINGAN IKAN BELANAK (Liza melinoptera) DI PERAIRAN TELUK PALU Yusuf, Moh.; Hamzah, Baharuddin; Rahman, Nurdin
Jurnal Akademika Kimia Vol 2, No 3 (2013)
Publisher : Universitas Tadulako

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Abstract

Mercury (Hg) is one type of a dangerous heavy metals. As one of contaminants, mercury enter the aquatic ecosystem through atmospheric decomposition or sourced from the industrial waste externalisation and bilogical and chemical converted in methyl mercury. This research aims to find out and determine the mercury concentrate which contained in sea water, sediment and belanak (Liza melinoptera) network in Palu bay water. The analysis of mercuri content on the tested sample using Automatic Mercury Analyzer. The working principle of the device is gold amalgamation method by heating and separation. The research result showed that the mercury content in belanak network is 0.143 - 0.188 ppm, sediment is 2.453 - 2.800 ppm and the sea water is 0.030 – 0.040 ppm. Based on the decision of the state minister of environmental regarding the guidelines for determination of Hg standard quality for sea water is 0.002 ppm and 0.001 ppm for marine biota. It shows that the Palu bay water condition has been polluted and the belanak is not worth to be consumed.
Uji Efektivitas Ekstrak Tanaman Putri Malu (mimosa pudica linn) Sebagai Bahan Pengawet Alami Tomat Fadlian, Fadlian; Hamzah, Baharuddin; Abram, Paulus Hengky
Jurnal Akademika Kimia Vol 5, No 4 (2016)
Publisher : Universitas Tadulako

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Abstract

Putri malu plant (mimosa pudica Linn) is known to contain saponin which is antibacterial compounds that can be used as a preservative. This study aims to prove whether the putri malu extracts can be used as a natural preservative for tomato and to determine the concentration of putri malu extracts to preserve tomatoes. The extraction method used was maceration and iodimetric titration to determine the levels of vitamin C before and after preservation. The results showed that the putri malu extract can be used as a natural preservative for tomatoes and the most effective concetration in preserving tomatoes was of 6%, that was for 11 days. At this level of concentration vitamin C showed the smallest value among others concentration where it decreased from 36.373 mg/100 g into 34.613 mg/100 g of material.
Analisis Logam Timbal (Pb) Dan Besi (Fe) Dalam Air Laut Di Pelabuhan Desa Paranggi Kecamatan Ampibabo Fiskanita, Fiskanita; Hamzah, Baharuddin; Supriadi, Supriadi
Jurnal Akademika Kimia Vol 4, No 4 (2015)
Publisher : Universitas Tadulako

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Abstract

Determination of concentration of lead (Pb) and iron (Fe) has been conducted in sea water in Paranggi village, district of Ampibabo. The method used is spectrophotometry, namely atomic absorption spectrophotometer (AAS). Sea water sample is taken in the morning with a 3-point sampling, which is at a distance of ± 5 m, 10 m and 15 m respectively. The 3-point sampling is from the port side of the back end of the ship and the port end of the backrest ship at a distance of ± 5 m ahead. Analysis of Pb level is measured at a wavelength of 217 nm and Fe at a wavelength of 248.3 nm. Result shows that Pb levels at point A is 0.4869 mg/L, at point B is 0.5304, and at point C is 0.4869 while for the Fe levels shows that at point A is 0.3073, at point B is 0.2652, and at point C is 0.2863. The range of the concentration of Pb is between 0.4869 to 0.5304 mg/L. This concentration is higher when compared with the NAB Pb, 0.025 mg/L. Furthermore, the range of the concentration of Fe is from 0.2652 to 0.3073 mg/L. Similarly to Pb result above, this concentration is higher when compared with the NAB Fe, 0.01 mg /L.
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.
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.
Co-Authors Abdul Wahid Wahab Afadil Agustin Tiwow Alep, Boni Alizah, Nur Amin, Alif Hidayatullah Anak Agung Istri Sri Wiadnyani Asisa, Nur Azzajjad, Muhammad Fath Baloga, Hendra Bayu Riyadi, Bayu Cica Anisa Daud Karel Walanda Delviana, Delviana Dia Afrianti Sangkota, Vivi Diharnaini Diharnaini Djahir, Ahmad Rifaldi Djasman, Syamsiar Masgul Fadlian, Fadlian Fiskanita, Fiskanita Fitriani, Eva Frantauansyah, Frantauansyah Genefefa T., Fulgensia Hardani, Muhammad F. Hardani, Muhammad Fakhrul HUsnia Mucthar Husnia, Husnia I Gusti Ngurah Antaryama Iffatunniswah Suhud Ihsan Ihsan Irawati, Dwi Ardi Irwan Irwan Irwan Said Jamaludin M Sakung Kadek N. Anjani Laksono Trisnantoro Linawati Linawati Luh Putu Ratna Sundari Magfirah Mangela, Yessika D. Minarni Rama Jura Moh. Yusuf, Moh. Muhammad Awaluddin Hamdy Mustapa, Kasmuddin Nasution, Annio Indah Lestari Ni Luh A. Murtini Noor Jalaluddin Nurdin Rahman Nurhayati Kamaruddin Nurul Jamala Pathuddin Paulus H. Abram Paulus Hengky Abram Poppy Fitra Wahyuni Pulukadang, Sri H. V. Purnama Ningsih Putri, Eska Perdanawati Kahar Rahmawati, Rahmawati Rawal, Andi Resky Reny, Reny Reny, Reny Rezki Rezki Ria Wikantari Ririen Hardani Rosady Mulyadi S, Afadil Sahabuddin Latif, Sahabuddin Sahida Sahida Salsabila, Unik Hanifah Sangkota, Vivi Diah Siti Nurbaya Siti Nuryanti Siti Rabiah Laonu Sitti Aminah Sitti Rahmawati Solfarina, Solfarina Sri Hastuti Virgianti Pulukadang Suhartini Musa Suherman Suherman Sulniawati, Sulniawati Supriyatno, Tri Octivan Suwiyarsa, I Nyoman Tamala, Sindy T. Taupik Hidayat Tiwow, Vanny Maria Agustina Tri Suci Lestari Tudjuka, Mora Delfita Tuljannah, Naima Widya Astuti