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All Journal Jurnal Teknik Mesin Jurnal Litbang Industri Jurnal Mandala Pengabdian Masyarakat Jurnal Litbang Industri Jurnal Rekayasa Kimia & Lingkungan Aceh International Journal of Science and Technology Teknologi dan Industri Pertanian Indonesia
- Darmadi
Department Of Chemical Engineering, Faculty Of Engineering, Universitas Syiah Kuala, Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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Pengolahan Limbah Cair Rumah Sakit secara Sonochemical Kusuma, Laila; Darmadi, Darmadi; Adisalamun, Adisalamun
Jurnal Litbang Industri Vol 7, No 1 (2017)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (615.867 KB) | DOI: 10.24960/jli.v7i1.2691.29-39

Abstract

Hospital as a service provider has an important role in human life, especially for people who are experiencing physical and mental disorders. Various types of diseases and therapies performed in hospitals has made it as one of the producers of hazardous and infectious waste that requires special handling and processing so as not to pollute the water, soil, and air environment. Hospital wastewater treatment was conducted to determine the ability of sonochemical method to reduce level of Chemical Oxygen Demand (COD) and determine the optimum conditions of the parameters used by the design of Response Surface Methodology Box-Behnken. The parameters that affected this process was the concentration of hydrogen peroxide (H2O2), pH, and reaction time. The Waste used was taken from the waste water treatment plant in Zainoel Abidin General Hospital in Banda Aceh with COD value 260.65 ppm. The optimum conditions of this treatment process occured at pH 2, H2O2 concentration 500 ppm, and reaction time 119.98 minutes with reduction of COD was 81.88%.ABSTRAKRumah sakit sebagai penyedia layanan jasa memegang peranan cukup penting dalam kehidupan manusia, terutama bagi orang-orang yang sedang mengalami gangguan fisik dan mental. Berbagai jenis penyakit dan terapi yang dilakukan di rumah sakit telah menjadikannya sebagai salah satu penghasil limbah berbahaya dan infeksius yang memerlukan penanganan dan pengolahan khusus agar tidak mencemari lingkungan yaitu air, tanah dan udara. Pengolahan limbah cair rumah sakit dilakukan untuk mengetahui kemampuan metode sonochemical dalam menurunkan kadar Chemical Oxygen Demand (COD) dan menentukan kondisi optimum dari parameter yang digunakan berdasarkan disain Response Surface Methodology Box-Behnken. Parameter yang mempengaruhi proses ini adalah konsentrasi hidrogen peroksida (H2O2), pH, dan waktu reaksi. Limbah yang digunakan diambil dari instalasi pengolahan air limbah di Rumah Sakit Umum Zainoel Abidin Kota Banda Aceh dengan nilai COD sebesar 260,65 ppm. Kondisi optimum dari proses pengolahan terjadi pada pH 2, konsentrasi H2O2 500 ppm, dan waktu reaksi 119,98 menit dengan penurunan COD sebesar 81,88 %
Analisis Karakteristik Emisi Gas Buang Pada Sarana Transportasi Roda Dua Kota Banda Aceh - Jalaluddin; Asri Gani; - Darmadi
Jurnal Teknik Mesin Unsyiah Vol 1, No 4 (2013)
Publisher : Jurnal Teknik Mesin Unsyiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (17.41 KB)

Abstract

The study was conducted to measure exhaust emissions and describe the level of air pollution from motorcycles operating in Banda Aceh and and surrounding areas. The measurement of exhaust emissions is done when the engine starts with the average gas pressure between 3000 - 4000 rpm and the motorcycle is in  stationary condition, as well as air conditioning in the cabin is off. The measurement parameter is Carbon Dioxide CO2 ( % ) , Carbon Monoxide CO ( mg/m3 ) , Nitrogen Dioxide NO2 ( mg/m3 ) , and Sulful Dioxide SO2 ( mg/m3 ) and the emission gauge used is Quintox flue Gas Analyzer. Based on the results of the study of the level of CO2 produced by motorcycles of various cylinder capacities are 12 % below quality standards. The level of O2 generated in the combustion process of the motorcycles is far above 2% and 1050mg/m3 of SO2. The level of SO2 exshausted is 2% above the quality standard of SO2 set in the Regulation of the Minister of  Environment , which is 800 mg/m3.
Pengolahan Limbah Cair Rumah Sakit secara Sonochemical Laila Kusuma; Darmadi Darmadi; Adisalamun Adisalamun
Jurnal Litbang Industri Vol 7, No 1 (2017)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24960/jli.v7i1.2691.29-39

Abstract

Hospital as a service provider has an important role in human life, especially for people who are experiencing physical and mental disorders. Various types of diseases and therapies performed in hospitals has made it as one of the producers of hazardous and infectious waste that requires special handling and processing so as not to pollute the water, soil, and air environment. Hospital wastewater treatment was conducted to determine the ability of sonochemical method to reduce level of Chemical Oxygen Demand (COD) and determine the optimum conditions of the parameters used by the design of Response Surface Methodology Box-Behnken. The parameters that affected this process was the concentration of hydrogen peroxide (H2O2), pH, and reaction time. The Waste used was taken from the waste water treatment plant in Zainoel Abidin General Hospital in Banda Aceh with COD value 260.65 ppm. The optimum conditions of this treatment process occured at pH 2, H2O2 concentration 500 ppm, and reaction time 119.98 minutes with reduction of COD was 81.88%.ABSTRAKRumah sakit sebagai penyedia layanan jasa memegang peranan cukup penting dalam kehidupan manusia, terutama bagi orang-orang yang sedang mengalami gangguan fisik dan mental. Berbagai jenis penyakit dan terapi yang dilakukan di rumah sakit telah menjadikannya sebagai salah satu penghasil limbah berbahaya dan infeksius yang memerlukan penanganan dan pengolahan khusus agar tidak mencemari lingkungan yaitu air, tanah dan udara. Pengolahan limbah cair rumah sakit dilakukan untuk mengetahui kemampuan metode sonochemical dalam menurunkan kadar Chemical Oxygen Demand (COD) dan menentukan kondisi optimum dari parameter yang digunakan berdasarkan disain Response Surface Methodology Box-Behnken. Parameter yang mempengaruhi proses ini adalah konsentrasi hidrogen peroksida (H2O2), pH, dan waktu reaksi. Limbah yang digunakan diambil dari instalasi pengolahan air limbah di Rumah Sakit Umum Zainoel Abidin Kota Banda Aceh dengan nilai COD sebesar 260,65 ppm. Kondisi optimum dari proses pengolahan terjadi pada pH 2, konsentrasi H2O2 500 ppm, dan waktu reaksi 119,98 menit dengan penurunan COD sebesar 81,88 %
Pengolahan Limbah Cair Rumah Sakit secara Sonochemical Laila Kusuma; Darmadi Darmadi; Adisalamun Adisalamun
Jurnal Litbang Industri Vol 7, No 1 (2017)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (615.867 KB) | DOI: 10.24960/jli.v7i1.2691.29-39

Abstract

Hospital as a service provider has an important role in human life, especially for people who are experiencing physical and mental disorders. Various types of diseases and therapies performed in hospitals has made it as one of the producers of hazardous and infectious waste that requires special handling and processing so as not to pollute the water, soil, and air environment. Hospital wastewater treatment was conducted to determine the ability of sonochemical method to reduce level of Chemical Oxygen Demand (COD) and determine the optimum conditions of the parameters used by the design of Response Surface Methodology Box-Behnken. The parameters that affected this process was the concentration of hydrogen peroxide (H2O2), pH, and reaction time. The Waste used was taken from the waste water treatment plant in Zainoel Abidin General Hospital in Banda Aceh with COD value 260.65 ppm. The optimum conditions of this treatment process occured at pH 2, H2O2 concentration 500 ppm, and reaction time 119.98 minutes with reduction of COD was 81.88%.ABSTRAKRumah sakit sebagai penyedia layanan jasa memegang peranan cukup penting dalam kehidupan manusia, terutama bagi orang-orang yang sedang mengalami gangguan fisik dan mental. Berbagai jenis penyakit dan terapi yang dilakukan di rumah sakit telah menjadikannya sebagai salah satu penghasil limbah berbahaya dan infeksius yang memerlukan penanganan dan pengolahan khusus agar tidak mencemari lingkungan yaitu air, tanah dan udara. Pengolahan limbah cair rumah sakit dilakukan untuk mengetahui kemampuan metode sonochemical dalam menurunkan kadar Chemical Oxygen Demand (COD) dan menentukan kondisi optimum dari parameter yang digunakan berdasarkan disain Response Surface Methodology Box-Behnken. Parameter yang mempengaruhi proses ini adalah konsentrasi hidrogen peroksida (H2O2), pH, dan waktu reaksi. Limbah yang digunakan diambil dari instalasi pengolahan air limbah di Rumah Sakit Umum Zainoel Abidin Kota Banda Aceh dengan nilai COD sebesar 260,65 ppm. Kondisi optimum dari proses pengolahan terjadi pada pH 2, konsentrasi H2O2 500 ppm, dan waktu reaksi 119,98 menit dengan penurunan COD sebesar 81,88 %
Pemanfaatan Serbuk Gergaji untuk Pengasapan Kayu dan Pengolahan Air Kolam Lele Dumbo Mirna Lubis; Darmadi Darmadi; Hisbullah Hisbullah; Adisalamun Adisalamun
Jurnal Mandala Pengabdian Masyarakat Vol. 3 No. 2 (2022): Jurnal Mandala pengabdian Masyarakat
Publisher : Progran Studi Farmasi STIKES Mandala Waluya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1012.425 KB) | DOI: 10.35311/jmpm.v3i2.115

Abstract

Kegiatan pengabdian ini dilaksanakan bermitra dengan usaha pengolahan kayu dan budidadya lele dumbo yang terletak di Desa Lhong Raya, Kecamatan Banda Raya, Kabupaten Aceh Besar. Kegiatan pengabdian masyarakat ini melibatkan dua mitra unit usaha, yaitu usaha pengolahan kayu dan usaha budidaya lele dumbo. Permasalahan mitra pertama terletak pada proses pengeringan kayu. Selama ini pengeringan kayu memakan waktu yang lama minimal enam bulan. Selain itu, serbuk gergaji hasil pengolahan kayu menumpuk dan dapat menimbulkan masalah lingkungan. Sedangkan mitra kedua menemui permasalahan pada proses pengolahan air kolam lele dumbo. Tim pengabdian telah melakukan kegiatan untuk membantu mitra menyelesaikan permasalahannya. Pada mitra pertama, kegiatan mencakup pembuatan unit proses pengeringan kayu. Unit ini terdiri dari dari ruang pengering dan dapur pembakaran. Udara pengering untuk pengeringan kayu dipanaskan dalam dapur pembakaran yang berbahan bakar serbuk gergaji. Pada mitra kedua, kegiatan mencakup pembuatan kolam treatment (pengolahan) air. Unit pengolahan ini terdiri dari dua kolam. Dalam kolam pertama, lumpur yang ada dalam air kolam lele dumbo diendapkan. Pada kolam kedua air dari kolam pertama diberikan asap cair sebagai pembunuh kuman. Pencapaian kegiatan ini pada mitra pertama adalah telah beroperasinya ruang pengering. Pengoperasian unit ini telah mempersingkat waktu yang dibutuhkan untuk pengeringan kayu.
Adsorption of Mercury (II) Ions from Water Using Carbon-Based Monolith with Manganese Oxide Filler Debby Widya Kusuma; Mahidin Mahidin; darmadi darmadi
Jurnal Rekayasa Kimia & Lingkungan Vol 17, No 2 (2022): Jurnal Rekayasa Kimia & Lingkungan (July - December, 2022)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (310.043 KB) | DOI: 10.23955/rkl.v17i2.27747

Abstract

Mercury is harmful to humans and the ecological environment. The adsorption process is known as an effective method for removing heavy metals. This research is devoted to developing new adsorbents based on carbon materials to remove metal ions Hg(II) with carbon-based monolith adsorbents without and with manganese oxide fillers (KM and KMM). The results of adsorption efficiency, adsorption kinetics, and isotherm models were made in a batch system with varying concentrations of mercury solution from 2 mg/L to 6 mg/L with adsorbents without and with manganese oxide fillers (KM and KMM). The highest removal efficiency reached 96% on KMM and 47% on KM. The adsorption isotherm of Hg(II) ions corresponds to the Freundlich model, with intensity and volume constants obtained respectively 0.042 and 1.347 L/mg on KM adsorbents, while on KMM adsorbents the intensity and volume constants obtained are 0.291 and 2.079, respectively. L/mg. These results indicate that physical adsorption occurs more dominantly than chemical adsorption. The adsorption of Hg(II) ions was in accordance with the pseudo-first-order adsorption kinetics, with the adsorption capacity and rate constant on the KM adsorbent obtained were 0.0505 mg/g and 0.0072 g/mg, while the adsorption capacity and rate constant for the KMM adsorbent were on KM adsorbents obtained were 0.0848 mg/g and 0.0239 g/mg.
Pengolahan Limbah Cair Laundry Menggunakan Membran Selulosa Diasetat Berbasis Selulosa Pulp Kayu Sengon (Paraserianthes falcataria) Vera Roni Setiawan; Cut Meurah Rosnelly; Darmadi Darmadi
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 3 (2013): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (263.319 KB) | DOI: 10.23955/rkl.v9i3.782

Abstract

The improvement of laundry activity brought a negative effect on the environment because laundry wastewater have a high content pollutants such as phosphate, surfactants, mineral, nitrogen, COD and other components, so the treatment is needed before being discharged into terristorial water. Laundry wastewater treatment has been conducted by membrane technology. Preparation of cellulose diacetate  membranes with ultrafiltration process had be done by phase inversion using dimethylformamide (DMF) as a solvent. The filtration experiment showed that the highest membrane flux was 77,408 L/m2.h at TMP 3 bar. While the lowest flux at TMP 1 bar was 55.649 L/m2.h. Rejection of membrane ultrafiltration for parameters of COD, phosphate, and surfactant were 67%, 72%, and 63% respectively.Keywords: cellulose diacetate membranes, laundry wastewater, flux, rejection
Aplikasi Metode Advance Oxidation Process (AOP) Fenton pada Pengolahan Limbah Cair Pabrik Kelapa Sawit Ruka Yulia; Hesti Meilina; Adisalamun Adisalamun; Darmadi Darmadi
Jurnal Rekayasa Kimia & Lingkungan Vol 11, No 1 (2016): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1026.361 KB) | DOI: 10.23955/rkl.v11i1.4098

Abstract

Penelitian ini bertujuan untuk mengetahui kemampuan proses Fenton dalam menurunkan kadar chemical oxygen demand (COD) dan kadar total suspended solid (TSS) dari limbah cair pabrik kelapa sawit (PKS) dan menentukan kondisi optimum dari parameter yang digunakan dengan Response Surface Methodology menurut Box- Behnken design. Sampel diambil pada keluaran pertama kolam anaerobik ketiga dari instalasi pengolahan limbah cair kelapa sawit yang mengandung nilai COD berkisar antara 8.000 hingga 12.000 ppm. Pada penelitian ini, dilakukan pengujian pada berbagai pH, konsentrasi FeSO4.7H2O dan konsentrasi hidrogen peroksida. Hasil  penelitian menunjukkan bahwa kemampuan proses AOP dengan metode Fenton dapat menurunkan konsentrasi COD dan TSS masing-masing adalah 70,7704% dan 88,3897% pada konsentrasi FeSO4.7H2O 3703,52 ppm, konsentrasi H2O2 5586,43 ppm, dan pH 3.
Bentonite and Magnetite Filler-Modified Polyurethane Foam in Fixed Bed Column for the Adsorption of Mercury(II) Ions from Aqueous Solution Siti Sarah; Adisalamun Adisalamun; Darmadi Darmadi; Suraiya Kamaruzzaman; Abrar Muslim; Saiful Saiful
Aceh International Journal of Science and Technology Vol 10, No 1 (2021): April 2021
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (535 KB) | DOI: 10.13170/aijst.10.1.18890

Abstract

This paper proposed adsorbent development by synthesizing polyurethane foam (PUF) using a simple method, mixing polyol with isocyanate and adding fillers of bentonite and magnetite to the PUF matrix. The study's main objective was to produce a PUF-based adsorbent with high reactivity to remove Hg2+ in wastewater. This bentonite and magnetite filler-modified polyurethane foam (BMPUF) adsorbent was fixed in a bed column for the adsorption of mercury (II) ions from an aqueous solution. The effect of initial Hg2+ concentration on the removal rate and the effect of contact time on adsorption efficiency was investigated. Langmuir, Freundlich, and BET non-linear models were taken into account to determine the best adsorption isotherm fitting and obtain adsorption capacity, intensity, and pore volume. As a result, it followed the non-linear Freundlich model, and the average adsorption capacity and intensity were 0.466 mg/g and 0.923, respectively. The average BET-based pore volume obtained was 0.782 L/mg. The kinetics study showed that the non-linear pseudo-first-order kinetics model was more suitable for describing the Hg2+ adsorption kinetics. The maximum equilibrium adsorption capacity was 1.770 mg/g with the adsorption rate of 0.0013 min-1 based on the non-linear model. The effect of varying bentonite and magnetite ratio on adsorption isotherm and kinetics was also investigated. Overall, the potential application of BMPUF adsorbent in the adsorption of mercury (II) ions was demonstrated in the current study. 
Optimasi Proses Pembuatan Karbon Aktif dari Ampas Bubuk Kopi Menggunakan Aktivator ZnCl2 Rasdiansyah Rasdiansyah; Darmadi Darmadi; Muhammad Dani Supardan
Jurnal Teknologi dan Industri Pertanian Indonesia Vol 6, No 3 (2014): Vol.(6) No.3, October 2014
Publisher : Agricultural Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (720.124 KB) | DOI: 10.17969/jtipi.v6i3.2312

Abstract

Activated carbon can be manufactured from a variety source materials containing element carbon. Dregs of coffee grounds is one of abundant and promising activated carbon raw materials. This study was conducted to assess optimization process of activated carbon production from dregs of coffee grounds by using ZnCl2 as an activator. The optimization process is performed by using Response Surface Method to optimize factors that affected quality of the activated carbon using Box-Behnken design. The factors used were carbonation temperature (T) with a level of 400 oC, 500 oC and 600 °C; concentration of ZnCl2 (K) with a level of 30%, 40%, 50%; and mass ratio of ZnCl2 to activated carbon with level of 2:1, 3:1 and 4:1. A second order regression model of iodine absorption of activated carbon was Y = 626,2 - 36,5T + 28,6K - 36,5R + 31,2T2 + 47,1K2 - 0,5R2 - 19,0TK + 15,9TR + 101,5KR. Results of optimization process showed that optimum iodine absorption of 799.659 mg/g was obtained at the following conditions, i.e. carbonation temperature of 400 oC, ZnCl2 concentration of 30% and mass ratio of ZnCl2 to activated carbon of 2:1.
Co-Authors - Jalaluddin Abrar Muslim Adisalamun Adisalamun Adisalamun Adisalamun Asri Gani Cut Meurah Rosnelly Debby Widya Kusuma Hesti Meilina Hisbullah Hisbullah Kusuma, Laila Laila Kusuma Mahidin Mahidin Mirna Lubis Muhammad Dani Supardan Rasdiansyah Rasdiansyah Ruka Yulia Saiful Saiful Saiful Saiful Siti Sarah Suraiya Kamaruzzaman Vera Roni Setiawan