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Kajian Isoterm Adsorpsi Linear Alkilbenzena Sulfonate (LAS) dalam Limbah Cair Detergen Menggunakan Biosorben Ampas Kopi dan Ampas Kelapa Mimin Septiani; Zakiyah Darajat; Muhammad Arham Yunus; Maria Assumpta Nogo Ole; Zuhrotul Fikri Ilma
Eksergi Vol 20, No 2 (2023)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v20i2.9955

Abstract

One of the efforts to minimize the impact of detergent waste pollution is by adsorption using coffee dregs and coconut dregs adsorbents. The purpose of this study was to determine the optimum mass of coffee grounds and coconut pulp as adsorbents, to compare the effectiveness of their absorption in decreasing levels of Linear Alkyl Benzene Sulfonate, and to study their adsorption isotherm models. This research was conducted in batches with variations in the mass of each adsorbent, namely 1 gram, 2 grams, 3 grams, 4 grams and 5 grams. This research was conducted in batches with variations in the mass of each adsorbent, namely 1 gram, 2 grams, 3 grams, 4 grams and 5 grams. The detergent waste samples were contacted with the adsorbent for 30 minutes and then the absorption capacity was tested using the Methylene Blue test method. The results showed that the optimum absorption of LAS content from coffee grounds and coconut pulp adsorbents occurred at a mass of 2 grams with the greatest increase in absorption efficiency index Coconut dregs adsorbent is more effective than coffee dregs because it can absorb up to 37%, while coffee dregs are only 10% with the same adsorbent mass of 5 grams. The adsorption isotherm model of the 2 types of adsorbents refers to the Langmuir equilibrium with R2 values for coffee grounds 0.8651 and coconut pulp 0.9868.
Pemanfaatan Ekstrak Belimbing Wuluh (Avverhoa bilimbi L.) Menjadi Sabun Cuci Piring Zakiyah Darajat; Dian Ranggina; Harun Pampang; Afriyanti S. Lamuru; Muhammad Arham Yunus; Maria Assumpta Nogo Ole; Nurfiansyah Nurfiansyah
COVIT (Community Service of Tambusai) Vol. 2 No. 2 (2022): SEPTEMBER 2022
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/covit.v2i2.18389

Abstract

Wuluh star fruit is a plant that is rich in benefits. The population of this plant is very abundant in the community both in the yard or as a shade plant in the yard. The population of this plant is not proportional to its utilization so that the star fruit usually falls and rots. Seeing this, a community service activity was carried out regarding the use of starfruit into dish soap, which besides being able to add to the economic value of starfruit, can also reduce environmental pollution. Wuluh star fruit (Averrhoa bilimbi L.) contains saponins, flavonoids, acetic acid, and vitamin C. Saponins have the ability to kill bacteria while flavonoids can destroy bacterial proteins by lysis method so that bacteria cannot reproduce and die. Saponins also function as a foam producer so that they can be used in the manufacture of dish soap. Keywords: Wuluh star fruit, saponin, dish soap
BIODEGRADASI XYLENE DARI LAHAN TERCEMAR MINYAK BUMI OLEH BAKTERI RHODOCOCCUS ERYTHROPOLIS Ole, Maria Assumpta Nogo; Juliastuti, Sri Rachmania
JURNAL TEKNOLOGI KIMIA MINERAL Vol 2 No 1 (2023): JURNAL TEKNOLOGI KIMIA MINERAL
Publisher : Politeknik ATI Makassaar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (475.887 KB) | DOI: 10.61844/jtkm.v2i1.455

Abstract

Peningkatan eksploitasi minyak bumi merupakan sumber utama pencemaran tanah dan air. Tanah yang tercemar hidrokarbon pada dasarnya telah mengandung mikroorganisme yang dapat memecah hidrokarbon. Akan tetapi proses biodegradasi hidrokarbon dengan metode in situ mengalami hambatan karena lahan tercemar yang luas dan kebutuhan nutrien yang tidak terpenuhi. Oleh sebab itu maka dikembangkan metode ex situ dengan memindahkan tanah tercemar ke laboratorium untuk diolah dengan metode slurry bioreaktor. Mikroorganisme yang digunakan dalam proses ini adalah bakteri aerob Rhodococcus erythropolis yang mampu menguraikan alkilbenzena, seperti o-xylena, toluene dan etilbenzena pada temperatur 25oC – 37oC. Proses degradasi dilakukan pada 3 bioreaktor berpengaduk untuk konsentrasi baktri 12,5%, 15,0% dan 17,5%. Monitoring populasi bakteri dilakukan setiap 2 hari untuk mengetahui fase hidup mikroorganisme. Analisis hidrokarbon dilakukan setiap 14 hari selama 8 minggu dengan metode gas chromatography (GC). Bioreaktor 17,5% Rhodococcus erythropolis memberikan persen degradasi paling baik yaitu 96,83%.
Efektivitas Penggunaan Poli Aluminium Klorida (PAC) dan Aluminium Sulfat (Tawas) Dalam Pengolahan Limbah Cair Industri pada Waste Water Treatment Plant (WWTP) PT. KIMA Makassar dengan Metode Koagulasi Menggunakan Jar Test Harun Pampang; Maria Assumpta Nogo Ole; Zakiyah Darajat
KOLONI Vol. 1 No. 4 (2022): DESEMBER 2022
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/koloni.v1i4.280

Abstract

Wastewater in industrial areas has various contents. The levels of pollutant substances in waste water have been regulated in industrial area waste water quality standards stipulated in Government Regulations. One method used to achieve quality standards is a chemical process, namely adding chemicals as coagulants using a jar-test machine. In this study, the coagulation process of liquid waste from PT. Makassar Industrial Area with the addition of polyaluminium chloride (PAC) and aluminum sulfate (alum) which aims to study the effectiveness of using two types of coagulants with variations of 0.02, 0.04, 0.06, and 0.08 grams in 500mL of wastewater. After 1 minute fast stirring and 10 minutes slow stirring then leaving for 10 minutes, the TSS test showed that the addition of alum was able to reduce TSS better than the addition of PAC. The addition of 0.04 grams of alum resulted in an effectiveness of 91.71%, while for PAC the best results were the addition of 0.06 grams of coagulant with an effectiveness of 46.13%. Keywords: coagulation, jar-test, alum, PAC, wastewater treatment
Production of CaO from Golden Snail Shells: Structural and Surface Area Characterization by XRD, FTIR, and BET Analysis Jeanne Dewi Damayanti; Maria Assumpta Nogo Ole; M. Ilham Nurdin; Arifah Sukasri; Nur Amin Riyadi
Jurnal Kartika Kimia Vol 9 No 1 (2026): Jurnal Kartika Kimia
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, University of Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jkk.v9i1.1077

Abstract

Golden snails are widely recognized as significant pests in Indonesian rice fields because they damage young rice plants by attacking their stems and leaves. Despite their harmful agricultural impact, golden snail shells contain a high calcium carbonate (CaCO₃) content of approximately 60.56%, making them a valuable raw material for calcium oxide (CaO) production through calcination. In this study, golden snail shells were calcined at 700, 800, and 900°C for 5 hours. The resulting CaO materials were characterized using Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), and Brunauer Emmett Teller (BET) surface area analysis. The findings demonstrate that calcination temperature significantly influences the physicochemical properties of the produced CaO, particularly its surface area. Among the tested conditions, the sample calcined at 900°C exhibited the highest specific surface area of 244.5211 m²/g, indicating enhanced porosity and a greater number of potential active sites at elevated calcination temperatures.