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All Journal Reaktor Seminar Nasional Teknik Kimia Kejuangan Jurnal Rekayasa Hijau Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat INAQUE: Journal of Industrial & Quality Engineering Jurnal Engine: Energi, Manufaktur, dan Material Jurnal Teknologi Lingkungan Lahan Basah Envirotek : Jurnal Ilmiah Teknik Lingkungan Makara Journal of Technology
Wivina Diah Ivontianti, Wivina Diah
Jurusan Teknik Kimia Fakultas Teknik Universitas Tanjungpura Pontianak
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Peat Water Treatment Using Modified Red mud Ivontianti, Wivina Diah; Shalindry, Riysan Octy; Maleiva, Lalak Tarbiyatun Nasyin
Reaktor Volume 24 No.1 April 2024
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.24.1.15-21

Abstract

Red mud is an alumina refinery waste residue that has been used to develop an effective adsorbent for wastewater treatment, one of which can be applied to peat water. Peat water treatment is carried out using the adsorption method. This study sought to ascertain the impact of the acid types of acid HCl and H2SO4 solution on dealumination process to the characteristics of the red mud adsorbent based on the analysis of XRF and BET instruments. In addition, this study was to determine the effect of the effect of mass variations of the red mud adsorbent on the effectiveness of peat water treatment. This research was conducted on a laboratory scale using variations in the adsorbent mass of 1 g; 3 g ; 5 g and 7 g and variation of contact time used was 15, 30, 60, and 90 minutes . The results showed an increase in the Si/Al ratio from 1.064% to 1.697% for HCl, while for H2SO41.565%.  Increasing of surface area with HCl was 179.574% while using H2SO4 was 162.891%. The results of research on the adsorption process with variations in the mass of the adsorbent 1, 3, 5, and 7 grams obtained the results of peat water pH respectively were 6.6; 7.0; 7.0; and 7,1. In the Fe metal there were removal of 73.39%; 37.09%; 24.19% and -141.93%. Then for the organic matter removal efficiency were 53.07%; 50%; 44.30% and -17.98% respectively. In variation of contact time for the parameter Fe, there were removals of 29,03%, 27,41%, and 24,19% respectively. Then for organic matter the removal efficiencies were 32,46%, 54,82%, 48,25%, and 44,29%. The optimum condition based on the result obtained are the 5 g for the mass adsorbent and 30 minute for contact time. Keywords: adsorbent; dealumination; H2SO4; HCl; peat water; red mud.
Effect of the CaO Catalyst Concentration Based on Barnacle Shells (Tetraclita squamosa) on Biodiesel Production from Coconut Oil Rakasiwi, Rinjani; Rezeki, Sri; Hafiza, Nurul; Ivontianti, Wivina Diah
Makara Journal of Technology Vol. 29, No. 1
Publisher : UI Scholars Hub

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Abstract

Barnacle shells are a source of the calcium oxide (CaO) catalyst, which is nontoxic, highly alkaline, and biodegradable. This study aims to determine the characteristics and the effect of the CaO catalyst concentration obtained from the calcination of barnacle shell particles at a temperature of 900 ℃ for 2 and 4 h on the transesterification reaction of biodiesel from coconut oil. Transesterification was conducted at 65℃ for 2 h with a methanol/coconut oil molar ratio of 6:1. The concentration of the CaO catalyst was varied (i.e., 1wt%, 3wt%, 5wt%, 7wt%, and 9wt%) for coconut oil. The results of the characterization of the catalyst through the X-ray diffraction test showed that the best calcination time was 4 h. The characteristic peaks of CaO appear at diffraction angles (2θ) of 31.4°, 36.0°, 54.3°, and 64.7°. The optimum catalyst concentration was 5wt%, where the highest yield (92.17%) was obtained with the following biodiesel characteristics: density at 40 ℃ of 863 kg/m3 , kinematic viscosity at 40 ℃ of 3.03 cSt, water content of 0.01%, and acid number of 0.26 mg KOH/g. The results of the gas chromatography–mass spectrometry analysis based on the optimum catalyst concentration showed that biodiesel was composed of methyl ester compounds, which were dominated by methyl laurate (54.52%) and methyl myristate (19.37%).
Pengaruh Penambahan Lumpur PDAM dan Zeolit sebagai Media Imobilisasi Bakteri terhadap Produksi Biogas dari Limbah Organik Pasar (Effect of Addition PDAM Sludge and Zeolite as Bacterial Immobilization Media on Biogas Production from Organic Waste) Ivontianti, Wivina Diah; Rakasiwi, Rinjani Ratih; Asniawati, Dwi
Jurnal Teknologi Lingkungan Lahan Basah Vol 8, No 2 (2020): Juli 2020
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtllb.v8i2.43189

Abstract

Abstract  Organic waste can be processed into biogas through the anaerobic decomposition process. Anaerobic decomposition can be influenced by various factors including the addition of immobilization media. Cell immobilization is an attempt to increase the stability of the anaerobic process while reducing the potential for washout. Adding this solid material can increase reactor efficiency and can increase methane yield. The research on the addition of zeolite and PDAM sludge as immobilization media aims to find out how the effect of the addition of immobilized media, as well as the best composition between PDAM slurry and zeolite as immobilization media in the biogas production process from organic waste. The immobilization media used has three variations in the composition ratio between PDAM sludge and zeolites, namely 2:0, 2:1, 1:1 and a control reactor. Observation parameter are of VS, pH, concentration of methane gas and gas volume. Based on observations made, it was known that the addition of zeolite and sludge PDAM as a medium of immobilization in the biogas production process could increase biogas production and the concentration of methane produced. Of the three variations in the composition of the media used in this study, the composition ratio of 2: 1 gave the best biogas production results in the amount of 23.2844 L. As for the methane concentration, the overall reactor with the addition of immobilization media results in higher biogas concentrations and the reactor with the addition of media with a ratio of 2: 1 gave the largest methane concentration results.  Keywords: biogas, immobilization, PDAM  Sludge, zeolite  Abstrak  Sampah organik pasar dapat diolah menjadi biogas melalui proses penguraian anaerobik. Penguraian anaerobik ini dapat dipengaruhi oleh berbagai faktor diantaranya penambahan media imobilisasi. Imobilisasi sel adalah salah satu usaha untuk meningkatkan stabilitas proses anaerob sekaligus mengurangi potensi washout. Penambahan material padatan ini dapat meningkatkan efisiensi reaktor dan dapat meningkatkan yield metana. Penelitian bertujuan untuk mengetahui bagaimana pengaruh penambahan media imobilisasi tersebut, serta komposisi terbaik antara lumpur limbah PDAM dan zeolit sebagai media imobilisasi pada proses produksi biogas dari limbah pasar. Media imobilisasi yang digunakan memiliki tiga variasi perbandingan komposisi antara lumpur PDAM dan zeolit, yaitu 2:0, 2:1,   1:1 dan   reaktor kontrol. Parameter pengamatan adalah   nilai VS, pH, konsentrasi gas metana, dan volume gas. Berdasarkan hasil pengamatan yang dilakukan diketahui bahwa penambahan zeolit dan lumpur PDAM sebagai media imobilisasi pada proses produksi biogas dapat meningkatkan produksi biogas serta konsentrasi metana yang dihasilkan. Dari tiga variasi perbandingan komposisi media yang digunakan dalam penelitian ini, perbandingan komposisi  2:1 memberikan hasil produksi biogas terbaik yaitu sebesar 23,2844 L. Sedangkan untuk konsentrasi metana, reaktor dengan penambahan media imobilisasi menghasilkan konsentrasi biogas yang  lebih tinggi dengan hasil terbaik yaitu variasi   perbandingan 2:1. Kata kunci: biogas, immobilisasi, lumpur PDAM, zeolit
Co-Authors Aslami Khairullah Asniawati, Dwi Aulia, Penny Eddy Kurniawan Elly Sri Rezeki Eva Pramuni Oktaviani Sitanggang Eva Pramuni Oktaviani Sitanggang Eva Pramuni Oktaviani Sitanggang Eva Pramuni Oktaviani Sitanggang Pramuni Oktaviani Sitanggang Febri Prima GITA SURYANI LUBIS Hafiza, Nurul Japri, Bryan Anthony Lalak Tarbiyatun Nasyin Maleiva MUHAMMAD IVANTO Nurfa Kholiza Oktaviani, Eva Pramuni Puspita, Filda Agum Rakasiwi, Rinjani Ria Devitasari Shalindry, Riysan Octy Sintanggang, Eva Pramuni Oktaviani Siti Syamsiah Sri Rezeki Sri Rezeki Syahrul Khairi Syaifurrahman Syaifurrahman Wiratni Budhijanto Yusup Yusup Zainal Abidin