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All Journal Teknika: Jurnal Sains dan Teknologi IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Jurnal Inovator Kinetika Jurnal Pendidikan dan Teknologi Indonesia International Journal of Research in Vocational Studies (IJRVOCAS) Aptekmas : Jurnal Pengabdian Kepada Masyarakat Journal of Applied Agricultural Science and Technology
Abu Hasan
Politeknik Negeri Sriwijaya
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KINETIKA ADSORPSI KARBON AKTIF DALAM PENURUNAN KONSENTRASI LOGAM TEMBAGA (Cu) DAN TIMBAL (Pb) Ulfa Meila Anggriani; Abu Hasan; Indah Purnamasari1
KINETIKA Vol. 12 No. 2 (2021): KINETIKA 01072021
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Heavy metals cause environmental pollution and affect human health because they are toxic. Cu and Pb are heavy metals that are often found in environmental pollution. One of the methods to reduce Cu (II) and Pb (II) metal content is adsorption using activated carbon. The purpose of this study was to determine the ability of activated carbon to absorb Cu (II) and Pb (II) metals, as well as to calculate its kinetics and adsorption capacity. Activated carbon with a certain amount (1 g and 1.5 g) is added to 50 ml of Cu (II) and Pb (II) metal solution for a certain time (0 - 40 minutes). The results obtained after the adsorption process were analyzed using Atomic Absorption Spectrophotometry (AAS). From the results of AAS analysis, it was found that activated carbon with a mass of 1.5 grams and a contact time of adsorption for 40 minutes was the most effective in reducing the concentration of Cu (II) and Pb (II) metals. Cu (II) metal adsorption follows Freundlich adsorption isotherm model while Pb (II) metal follows Langmuir adsorption isotherm model. The adsorption kinetics pattern of Cu (II) and Pb (II) metals follows second order kinetic adsorptions
KINETIKA ADSORPSI LOGAM Cu DAN Zn PADA LIMBAH CAIR KELAPA SAWIT MENGGUNAKAN MEMBRAN SILIKA: ABSORPTION KINETIC OF Cu AND Zn METALS IN PALM LIQUID WASTE USING SILICA MEMBRANE Feni Sri Erani; Abu Hasan; Indah Purnamasari
KINETIKA Vol. 13 No. 03 (2022): KINETIKA 01112022
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Heavy metals can cause environmental pollution and affect human health. Cu and Zn are often found in the environment. One method to reduce Cu and Zn is to use the adsorption method. Adsorption has become a competitive method in the field of wastewater. Adsorption kinetics is one of the main factors that must be understood before the application of any adsorbent. In each adsorption process, linear or non-linear analysis of the kinetics was applied. A fit index (correlation coefficient or sum of squares) was applied to access the best model. The purpose of this study was to determine the adsorption equation model, to obtain the adsorption kinetics of Cu and Zn metals using a silica membrane. The methodology used is silica extraction by precipitation method and then the process of making PVA and PEG membranes as adhesives and solvents. For the analysis of metal concentrations of Cu and Zn, Atomic Absorption Spectrophotometry (AAS) was used, while for membrane morphology analysis, a Scanning Electron Microscope (SEM) was used. From the process of applying silica membrane to palm oil liquid waste, the results of Pseudo Order 1 absorption kinetics for Cu metal (artificial solution) with k value of artificial Cu metal (4M) 0.0596, and k value of artificial Cu metal (8M) 0.0022, while the Pseudo Order 1 absorption kinetics for Zn metal with a k value of Zn metal (4M) 0.0077, and a k value of Zn metal (8M) 0.0109.
MENGENALKAN KEUNGGULAN POLITEKNIK NEGERI SRIWIJAYA KE DUNIA INTERNASIONAL MELALUI VIDEO WAWANCARA DENGAN KEPALA HUMAS POLSRI Sabilal Rasyad; Nyayu Latifah Husni; Ade Silvia Handayani; Afiifa Aaliyah Maharani; M. Sobri; Abu Hasan
Aptekmas Jurnal Pengabdian pada Masyarakat Vol 5 No 3 (2022): APTEKMAS Volume 5 Nomor 3 2022
Publisher : Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36257/apts.v5i3.5382

Abstract

Politeknik Negeri Sriwijaya (POLSRI) adalah salah satu perguruan tinggi terkemuka di kota Palembang Sumatera Selatan. Politeknik yang mendapat peringkat ketiga terbaik di Sumatera Selatan dan berada di klaster ke 12 sebagai pendidikan vokasi terbaik di Indonesia ini, mulai mengadakan program Internasionalisasi terhadap aktivitas pendidikan di kampusnya sebagai upaya pengenalan dengan dunia Internasional untuk melakukan peningkatan mutu dan kualitas pendidikannya. Internasionalisasi itu sendiri merupakan serangkaian aktivitas internasionalisasi seperti academic mobility bagi mahasiswa dan dosen, jejaring internasional, partnership and projects; program akademik internasional yang baru, serta inisiatif penelitian. Lebih lanjut lagi Internasionalisasi sebagai bentuk penyampaian pendidikan kepada negara lain melalui berbagai bentuk penyampaian, seperti kampus cabang atau franchises dengan berbagai bentuk tatap muka ataupun jarak jauh (e-learning). Sebagai upaya meningkatkan kualitas pendidikan dengan menjaring mahasiswa asing, Polsri mengembangkan program Beasiswa Mahasiswa Internasional yang terusu-menerus diadakan. Hal ini memberikan dampak yang signifikan dari perkembangan kualitas pendidikan sebagai hasil dari perwujudan penguatan inovasi, jaringan dan kolaborasi, pertukaran budaya dan adaptasi bentuk pendidikan di lingkungan kampus dengan Mahasiswa dari macam negara.
Delignification and Adsorption Research of Bioethanol Process using Pseudostem of Musa Balbisiana (Pisang Klutuk) as the Blending Raw Material to Gasohol Rafit Arjeni; Abu Hasan; Aida Syarif
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 1 (2023): February 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i1.1

Abstract

Indonesia is a country that has the most energy sources in the Southeast of Asia and the fifth in Asia-Pacific subsequent to China, India, Japan and South Korea. Energy usage in Indonesia in 2016 was still dominated by 47% fuel oil. If the energy usage increases continuously, energy sustenance and resilience in Indonesia will be plagued. Therefore, there is a necessary to utilize the alternative energy sources that would be earth-friendly as well New and Renewable Energy (EBT) like bioethanol. Bioethanol can be produced by organic wastes, pseudostem of Musa Balbisiana (Pisang Klutuk) as the example. This research is focused on the study of delignification and adsorption of the process of bioethanol using pseudostem of Musa Balbisiana as the blending raw material to gasohol. The process started with the pre-treatment and delignification of the pseudostem of Musa Balbisiana with the sorts of NaOH concentration including the following of 10%, 20%, 30% and 100oC, 125oC, 150oC, 175oC, dan 200oC for the heating temperatures. In delignification, it can be stated that the concentration of 10% NaOH on 150oC temperature produced the finest cellulose and lignin content with the amount of 81,3% cellulose and 10,1% lignin. The pseudostem fibers that have passed the process of delignification, was done to the process of hydrolysis and fermentation for producing bioethanol. The result of Bioethanol was carried out to the process of distillation for separating bioethanol and water. Continuing the process, bioethanol was purified in adsorption and distillation process. In adsorption, the 5gr, 10gr, 15gr, 20gr, and 25gr adsorbent alloyed to the purified bioethanol, and it can be claimed that the highest rate of purified bioethanol is 20gr with the 99,11% bioethanol content. The 99,11% bioethanol content was blending with Pertalite with the ratios of 5:95, 10:90, 15:85, 20:80, and 25:75, thereafter it was analyzed the RON content which obtained the highest point that is 97,48 on 25:75 ratio.
Characterization of Rubber Seed (Hevea Brasiliensis) as Raw Material for The Production of Biofuel Ayuni Lestari; Muhammad Yerizam; Abu Hasan
Journal of Applied Agricultural Science and Technology Vol. 7 No. 3 (2023): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v7i3.140

Abstract

Rubber seeds from the Musi Rawas region in South Sumatra have great potential for rubber seed plantations. However, their utilization has not been maximized and they are often treated as plantation waste. This research aims to obtain the characteristics of rubber seeds as raw materials for biofuel production, so that the rubber seeds from the South Sumatra region can be utilized by the community and not just considered as plantation waste. In the first treatment, the rubber seeds are crushed to obtain the seed coat and the kernel. The crushed rubber seed shells are finely ground and sieved, while the kernel is pressed to extract vegetable oil using a pressing tool. The test methods used to determine the characteristics of the rubber seed shells include proximate analysis and calorific value, while GC-MS analysis is employed for the rubber seed oil. The proximate analysis of the rubber seed shell (RSS) yielded the following results: moisture content of 15.97 wt%, volatile matter of 47.43 wt%, fixed carbon of 32.45 wt%, and ash content of 4.15 wt%. The calorific value of the rubber seed shell was found to be 3312.8694 calories per gram. For the GC-MS yield of the rubber seed oil, the composition is as follows: palmitic acid 7.32%, linoleic acid 34.69%, oleic acid 45.35%, and pentadecanoic acid 8.86%. Based on the obtained results, rubber seeds show promising potential as raw materials for biofuel production through the pyrolysis process.
Co-Authors Ade Silvia Handayani Afiifa Aaliyah Maharani Aida Syarief Aida Syarif Arfan Hasan Ayuni Lestari Bambang Irawan Fadarina Feni Sri Erani Husni, Nyayu Latifah Indah Purnamasari Indah Purnamasari1 Indarianti Utami Joniken Lesmana Julismi KA Ridwan Leila Kalsum M. Sobri Muhammad Yerizam Nasron Nasron Nedia Sandika Rafit Arjeni Rivaldo Arviando Robert Junaidi Rusdianasari Sabilal Rasyad Sopian Soim, Sopian Syahdilla Fadel Muhammad Ulfa Meila Anggriani Yohandri Bow