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All Journal Nusantara Science and Technology Proceedings International Journal of Eco-Innovation in Science and Engineering (IJEISE) Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat
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Department Of Chemical Engineering, Faculty Of Engineering, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Surabaya 60294, Indonesia
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Morphology Characteristic Study of Adsorbent Prepared from Sidoarjo Hot Mud Dwi Hery Astuti; Aissyah Lathifah Adriyanti; Arrizal Buditama; Ardika Nurmawati; Lucky Indrati Utami; Sani
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2736

Abstract

Sidoarjo hot mud has erupted for the past 16 years and has many effects on the environment. This mud contains several porous materials, such as silica and aluminum oxide, which can be used as adsorbents. This study aimed to characterize the morphology of the adsorbent and apply it to waste cooking oil purification. The composition of virgin hot mud was 46.5% SiO2 and 13% Al2O3 with an amorphous crystalline structure. The hot mud was activated with H2SO4 under different drying process conditions where the drying temperature differed from 150oC to 250oC, while the drying period was set from 30 to 90 minutes. After the activation, the structure of the adsorbent became more crystalline. From XRD analysis, the lowest intensity resulted from adsorbent with 225oC and 75 minutes of drying, with 191,038 m2/gr on pore surface area. This adsorbent had a greater pore surface area and gave the best adsorption process.
Pengolahan Pupuk Cair Dalam Upaya Pemanfaatan Limbah Kotoran Sapi di Kelompok Tani Ternak Wonosari Desa Kalipucang Kecamatan Tutur Kabupaten Pasuruan RR. Jasmine Nadya E. N. Rochadiana; Akmalia Dinda Oktavianta; Shiva Eric Z. Nur; Sani Sani; Ika N. Puspitawati
Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat Vol. 3 No. 1 (2023): Januari 2023 - Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat
Publisher : Indonesian Scientific Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25008/altifani.v3i1.322

Abstract

Kebanyakan peternak di Kelompok Tani Ternak Wonosari belum memanfaatkan secara maksimal limbah kotoran sapi. Mereka berkonsentrasi pada produksi susu yang dihasilkan sapi perah, pakan sapi, dan kotoran sapi ditimbun sebagai bahan bakar, yakni biogas. Namun, filtrat kotoran sapi yang diambil dari kotoran sapi dapat digunakan sebagai pupuk cair untuk tanaman. Tujuan penulisan artikel ini adalah untuk menjabarkan pengolahan pupuk cair dari kotoran sapi. Metode yang digunakan dalam artikel ini adalah metode eksperimental dalam percobaan membuat pupuk organik dan didukung studi literatur terkait. Berdasarkan hasil percobaan diperoleh hasil, bahwa Kelompok Tani Ternak Wonosari dapat memanfaatkan dan mengolah limbah kotoran sapi menjadi pupuk cair yang bernilai ekonomis dan dapat diperjual-belikan baik ke sesama anggota organisasi maupun ke para petani di luar organisasi.
Synthesis and Modification of Nano-Precipitated Calcium Carbonate (PCC) with Addition of Ethylene Glycol Sani; Mega Rosilina; Mochamad Titus Maulana; A.R Yelvia Sunarti; Srie Muljani; Dwi Hery Astuti; Isni Utami
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 3 No. 1 (2022): IJEISE
Publisher : International Journal of Eco-Innovation in Science and Engineering (IJEISE)

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Abstract

ZA fertilizer waste (Ammonium sulfate) is waste generated from the industrial process of producing ZA fertilizer. The waste contains very high calcium and has the potential to be used as a raw material in the manufacture of Precipitated Calcium Carbonate (PCC). PCC with certain qualities can be developed in the field of advanced materials, with size modification into nanoparticles. One method to produce nanoparticles is using the coprecipitation method, with the help of a polymer solution. This study aims to produce Nano-PCC by finding the best conditions of CaCl2: Ethylene Glycol mole ratio and stirring speed. Nano-PCC is synthesized by reacting fertilizer waste with HCl to form a CaCl2 solution. Then, the solution is mixed with ethylene glycol to prevent particle agglomeration so that the size obtained will be smaller. The mixture is then reacted with Na2CO3 to form precipitated calcium carbonate (PCC). In this study, the variables were the mole ratio of CaCl2: ethylene glycol (1:12, 1:14, 1:18, 1:20) and stirring speed (350, 500, 650, 800, and 950 rpm). Based on PSA analysis, the Nano-PCC obtained at the smallest CaCl2: ethylene glycol ratio 1:12, stirring speed 950 rpm was 51.83 nm. Based on Scherrer’s calculations with XRD, the particle size obtained was 48.25 nm. SEM analysis showed that the crystals formed were dominated by vaterite crystals, with a size range of 55.71-607.79 nm.
Control of Corrosion Rate of Metal Alloys: SS 304 And SS 201 Using Phosphate Inhibitor in Nacl 3.5% AR Yelvia Sunarti; Isni Utami; A. Fani Dwiyulianty Fariadi; Arfinka Pinakesti; Dwi Hery Astuti; Sani
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 4 No. 2 (2023): IJEISE
Publisher : International Journal of Eco-Innovation in Science and Engineering (IJEISE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ijeise.v4i2.117

Abstract

Corrosion is metal damage caused by electrochemical reactions with its environment. This environment can be water, air, gas, acid solution, salt solution, and others. Metals are highly active in producing an oxide layer on the metal surface under the influence of an aerobic environment. Metal corrosion is a process where the action of the surrounding media damages metal materials by the introduction of corrosion ions. This study aims to determine the best conditions for phosphate in controlling the rate of corrosion and Knowing the inhibition of phosphate on controlling the rate of corrosion. The materials used were stainless steel 201, stainless steel 304, and phosphate as an inhibitor. Meanwhile the solution NaCl 3.5% as a corrosive media environment and distilled water. Based on this research, the best phosphate concentration in reducing the corrosion rate of stainless steel 201 and 304 is 100 ppm with a reduction in the corrosion rate of stainless steel 201 of 0.022312 mpy with an inhibition percentage of 89.68%, and a reduction in the corrosion rate of stainless steel 304 by 0.045694 mpy with the percentage of inhibition is 94.027%. The corrosion rate of 304 stainless steel is lower than that of 201 stainless steel caused by differences in the Cr element composition of each metal. Stainless steel 304 contains 18.24% Cr while stainless steel 201 contains 13.00% Cr. The lower the Cr content in stainless steel, the stainless steel will be more susceptible to corrosion.
Co-Authors A. Fani Dwiyulianty Fariadi A.R Yelvia Sunarti Aissyah Lathifah Adriyanti Akmalia Dinda Oktavianta AR Yelvia Sunarti Ardika Nurmawati Arfinka Pinakesti Arrizal Buditama Dwi Hery Astuti Dwi Hery Astuti Ika N. Puspitawati ISNI UTAMI Isni Utami Lucky Indrati Utami Mega Rosilina Mochamad Titus Maulana RR. Jasmine Nadya E. N. Rochadiana Shiva Eric Z. Nur Srie Muljani