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Jurnal Teknik Kimia
Published by Universitas Sriwijaya
ISSN : 08530963     EISSN : 27214885     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Industrial & Manufacturing Engineering
Jurnal Teknik Kimia merupakan publikasi tulisan ilmiah hasil riset dan pengalaman lapangan di bidang Teknik Kimia, mulai dari prinsip dasar atau fundamental sampai pada penerapan/aplikasinya di industri. Jurnal Teknik Kimia dalam versi cetak telah diterbitkan sejak tahun 1996. Jurnal Teknik Kimia juga diterbitkan dalam versi on line mulai tahun 2013. Pada versi on line dapat diakses publikasi di Jurnal Teknik Kimia sejak tahun 2008 sampai sekarang.
Arjuna Subject : -
Articles 289 Documents
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Producing liquid organic fertilizer (LOF) by combining rice straw waste with local microorganisms (MOL) to enhance the growth of rice plants Adityas Agung Ramandani; Shintawati Shintawati; Salomo P Aji
Jurnal Teknik Kimia Vol 30 No 1 (2024): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya in collaboration with Asosiasi Pendidikan Tinggi Teknik Kimia Indonesia (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v30i1.1613

Abstract

Rice straw is a byproduct of rice harvesting that is often underutilized or discarded, contributing to agricultural waste. Finding effective ways to utilize rice straw could reduce waste and potentially enhance agricultural productivity. This study investigates the impact of rice straw and Local Microorganisms (MOL) on rice plant growth through liquid organic fertilizer (LOF). Employing a 2 x 2 factorial randomized regular two-level factorial design with three replications and blocks, the study assessed the impact of varying levels of rice straw (50 grams and 100 grams) and MOL application (200 mL and 400 mL) on rice plant height over a 7-day period. Results indicate that the combination of 50 grams of rice straw and 200 mL of MOL yielded the highest average plant height of 4.91 cm. Notably, MOL (B) exerted the most substantial influence on plant height, with the interaction between rice straw (A) and MOL also contributing, albeit to a lesser degree. Optimization analysis identified the optimal combination of 50 grams of rice straw and 266 mL of MOL for maximizing rice plant growth, underscoring the potential of integrating these elements into agricultural practices. This approach not only mitigates agricultural waste but also reduces dependence on chemical fertilizers, aligning with principles of sustainable agriculture. Moreover, the study robust experimental design and statistical analysis using Design Expert Version 13 validate the reliability and applicability of these findings in agricultural settings.
The The effect of sterilization time on oil loss into the condensate water of sterilizer in the crude palm oil industry Sri Rizki Putri Sri Primandari; Mulianti Mulianti; Harumi Veny
Jurnal Teknik Kimia Vol 29 No 3 (2023): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya in collaboration with Asosiasi Pendidikan Tinggi Teknik Kimia Indonesia (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v29i3.1772

Abstract

Sterilization in the sterilizer unit is one of the important processes in the Crude Palm Oil (CPO) industry but it can cause oil loss in the palm fruit which reduces the oil yield if the sterilization process is carried out over time. Therefore, the sterilization time needs to be considered so that this study aims to analyze the effect of the length of Fresh Fruit Bunches (FFB) sterilization time on oil loss in condensate water sterilizer on the industry of CPO and determine the maximum time in the Sterilizer. This study was conducted at a CPO plant in West Sumatra with a maximum standard of 1.2 % oil loss, the optimum sterilization time can be determined. This study uses a horizontal-type sterilizer through a triple-peak sterilization system. Peak pressure 1 is 1.2 bar; peak pressure 2 is 2.0 bar; and the triple peak pressure is 3.0 bar with a temperature of 130-140 °C. The time varies from 83 – 90 minutes. The results showed that the longer the sterilization time, the greater the percentage of oil loss. In conclusion, the maximum time in sterilizer is achieved under 87.4 minutes with an maximum oil loss standard of 1.2 %.
Production of ceramic membranes made from porang (Amorphophallus muelleri B.) and zeolite and its utilization on jumputan wastewater treatment Amira Siti Ramadhani; Aristya Fahrizul; D. Dionisius; Putri Ramadhania; Lia Cundari
Jurnal Teknik Kimia Vol 30 No 1 (2024): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya in collaboration with Asosiasi Pendidikan Tinggi Teknik Kimia Indonesia (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v30i1.2166

Abstract

Palembang has a rich art of weaving jumputan cloth. Jumputan fabric uses naphthol as a dye which if discharged into the river will affect the water. Porang (Amorphophallus muelleri B.) and zeolite have potential as absorbents in absorbing impurities in liquid waste from jumputan cloth through its modification into membranes. The purpose of this study was to determine the formulation and effectiveness of ceramic membranes from porang tubers and zeolites in treating jumputan cloth wastewater, and to characterize the permeate results from the membrane. This research uses ceramic membrane filtration method combined with coagulation using Poly Aluminum Chloride (PAC) and quicklime. Coagulation uses two stirring methods, namely fast and slow stirring. Filtration was carried out for 125 minutes and every 25 minutes the filtrate was sampled. After the filtration process, several parameters were analyzed, namely turbidity, color, TSS, and pH. The best turbidity value reduction was shown in membrane variation 2 at 50 minutes with a decrease of 68.71 %, a decrease in color concentration was shown in membrane variation 2 at 75 minutes operating time with a decrease of 69.19%, the decrease in TSS value is shown in membrane 2 at an operating time of 125 minutes with a decrease of 81.03 %. The highest pH increase was found in membrane variation 1 at an operating time of 125 minutes with an increase of 42.67 %. The filtration process with ceramic membranes is effective in reducing turbidity, color concentration, TSS, and increasing the pH of the waste.
Thermophysical and stability investigation of Al2O3- TiO2/water hybrid nanofluids Barlin Barlin; Amir Arifin; Astuti Astuti; Irvandy Irvandy; Irvandi Pratama Putra; Hary Putranto
Jurnal Teknik Kimia Vol 29 No 3 (2023): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya in collaboration with Asosiasi Pendidikan Tinggi Teknik Kimia Indonesia (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v29i3.2168

Abstract

Currently, one of the big challenges in the cooling systems technology is producing coolant fluid with good thermophysical dan stability properties. The new cooling fluids, namely nanofluid-based coolant has been developed for facing this challenge. Nanofluid is the dispersion of nanoparticle into base fluid. In this experimental investigation, thermophysical and stability of Al2O3-TiO2/Water hybrid nanofluid are studied. The Al2O3-TiO2/Water based hybrid nanofluid have been prepared by using two step method. The experiment is carried out for the various combination of volume fraction (0.2-0.6 wt%), ratio of nanoparticles (70:30-30:70wt%), stirring time (30-90 min), and sonication time (60-120 min). The thermophysical properties of the prepared nanofluids were characterized using pycnometer method for density and viscometer fall ball for viscosity. Photograph capturing method is applied to investigate the stability of nanofluids. According to the obtained results, the viscosity, density and stability have influenced by the synthesis parameters.
Sugar content improvement by sonication in the pretreatment of empty fruit bunch hydrolysis Rosalina Rosalina; Dwi Kemala Putri; Reni Sutri
Jurnal Teknik Kimia Vol 30 No 1 (2024): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya in collaboration with Asosiasi Pendidikan Tinggi Teknik Kimia Indonesia (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v30i1.2266

Abstract

The empty palm fruit bunches (EFB) has great potential as an alternative feedstock for bioethanol production due to its high content of cellulose and hemicellulose. However, besides cellulose and hemicellulose, EFB also contains lignin, which can hinder the hydrolysis process and therefore requires delignification. This study aims to determine the effect of sonication in alkali delignification on the sugar content of hydrolysis. Ultrasonic in 37 KHz was performed at a temperature of 80 °C. Sonication process durations ranged from 30 minutes to 150 minutes using a 10 % (w/v) NaOH solvent. The hydrolysis of EFB fibers was carried out in a water bath at 80 °C using a 0.5 N sulfuric acid solvent in a ratio of 1:20 (w/v) for 2 hours. The sugar content was measured using the phenol-sulfuric acid method with UV-Visible spectrophotometry. In this study found that the ultrasonic irradiation time length gave good results at a time limit not exceeding 90 minutes due to hemicellulose characteristics . The highest sugar content was obtained at a sonication duration of 90 minutes, measuring 20.60 mg/L, which was 38.5 % higher than alkali delignification without sonication for 150 minutes. SEM analysis indicated that EFB had undergone changes in the surface morphology and structure. Qualitative FTIR analysis showed that the hydrolysis solution contained glucose and pentose, which are products of hydrolyzed cellulose and hemicellulose.
Biodiesel production with DES (deep eutectic solvent) catalyst using used cooking oil feedstock through two-stage transesterification process Fitri Hadiah; Nur Kemala Debi Lestari; Mughni Ayahanda Putri; Budi Santoso; Rahmawati Rahmawati
Jurnal Teknik Kimia Vol 30 No 1 (2024): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya in collaboration with Asosiasi Pendidikan Tinggi Teknik Kimia Indonesia (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v30i1.2308

Abstract

Most of biodiesel in Indonesia is still produced by costly processed utilizing pricey catalysts and high grade fatty acid methyl esther (FAME). Low cost catalysts need to be invented in order to make biodiesel more affordable, while raw material also need to be obtained from low cost alternatives. such as broadly available waste cooking oil.This research used waste cooking oil as raw material in biodiesel transesterification process, utilizing DES (Deep Eutectic Solvent) K2CO3-gliserol, as alternative catalyst. The output was biodiesel with near SNI 7182:2015 criteria. Optimum biodiesel production was achieved in low 65 oC temperature while utilizing two step transesterification process using DES K2CO3-gliserol 5.5 % and 35 % methanol, whereas glycerol total was 0.32 % and methyl esther contain was 96.89 %.
Extraction of K2CO3 from empty palm fruit bunch ash and properties analysis Cindi Pakpahan; Susila Arita; Tuti Indah Sari; Leily Nurul Komariah; Fitri Hadiah; Nino Renaldi
Jurnal Teknik Kimia Vol 30 No 1 (2024): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya in collaboration with Asosiasi Pendidikan Tinggi Teknik Kimia Indonesia (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v30i1.2355

Abstract

Empty oil palm fruit bunches (EPFB) are the largest solid waste generated from palm oil mills. Accounting for 21-23 % of the total fresh fruit bunches. EFB ash contains K (Potassium) which can be recovered as K2CO3 through extraction. This research aims to recover K2CO3 from empty oil palm fruit bunches (EPFB) as a catalyst raw material because it is alkaline using the K2CO3 extraction method from the ash of empty oil palm fruit bunches (EPFB), which begins with a combustion process at a temperature of 700 oC to obtain ash. Ash extraction was carried out in 2 stages using water as a solvent. The K2CO3 yield from empty palm fruit bunch ash reached 57.28 %. The alkalinity test showed that the K2CO3 content in the solid extract reached 85.91 %. The properties of the ash and K2CO3 produced were analyzed using XRF, XRD and FTIR. The results of XRF analysis show that the potassium content in the ash contains the element K (potassium) which is quite large, namely 71.24 % and after extraction the purity of potassium oxide reaches 97.08 %. XRD analysis of the results of the synthesis of potassium carbonate from empty oil palm fruit bunches showed that the intensity of the material beam was obtained in a 2ϴ pattern which was lower than the intensity pattern of pure potassium carbonate. The results of FTIR analysis show that the spectrum of carbonate ions from the EPFB C-O bend is visible at 1359,879 and 700.75 cm-1 and these results are similaire to the pure carbonate ion vibration mode.
Application of integrated adsorption method (oil palm fiber, activated carbon, and ultrafiltration) in hospital wastewater treatment M. Fazrin Pramavada; Susila Arita; I. Isnurhadi
Jurnal Teknik Kimia Vol 30 No 2 (2024): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya in collaboration with Asosiasi Pendidikan Tinggi Teknik Kimia Indonesia (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v30i2.2407

Abstract

Hospital wastewater contains various pollutants including organic and inorganic compounds, heavy metals, and microorganisms which pose environmental and health risks. In Indonesia, the volume of hospital wastewater is increasing, whereas wastewater effluent hasn’t met wastewater quality standard optimally. Conventional wastewater treatments require high-cost, large areas, long operating times, and produce sludge. Previous studies showed that adsorption and filtration effectively decreased Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solids (TSS), and total coliform levels of hospital wastewater. Activated carbon is widely used adsorbent, but oil palm fiber offers higher adsorption capacity due to its cellulose and lignin content. It’s abundant, renewable, low-cost, and eco-friendly adsorbent. Meanwhile, filtration membrane has high adsorption capacity, but it gets saturated quickly and needs pre-treatment process. This study analyzes the effectiveness of integrated adsorption method in hospital wastewater treatment. It was a quasi-experimental study with one group pre-test post-test design. Wastewater from Hospital X in Palembang was treated with oil palm fiber, activated carbon, and ultrafiltration after being deposited for 24 hours. There were four trials. The combination of oil palm fiber, activated carbon, and ultrafiltration shows promising result with removal efficiency percentage of pH by 8.91 %; BOD by 60.53 %; COD by 57.52 %; TSS by 84.21 %; and total coliform by 52.50 %. Each adsorbent has specific role: oil palm fiber significantly decreases BOD (47.37 %) and TSS (80 %) levels; activated carbon effectively decreases COD (58 %) and total coliform (60%) levels; and ultrafiltration effectively decreases TSS level (83.58 %).
The effect of Used Cooking Oil (UCO) pre-treatment using bagasse on Free Fatty Acid (FFA) content Haryani, Nina; Utami, Andiga Asih Ambarwati; Imanda, Elfrida Rasyidah Desvi
Jurnal Teknik Kimia Vol 30 No 2 (2024): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya in collaboration with Asosiasi Pendidikan Tinggi Teknik Kimia Indonesia (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v30i2.1674

Abstract

Used Cooking Oil (UCO) refers to cooking oil that has been previously used. UCO can be reused through impurity removal and reduction of the FFA high content. The reduction of FFA content in UCO can be achieved using the adsorption method, employing adsorbents derived from various materials such as agricultural waste and zeolite. Examples of agricultural waste suitable for this purpose include rice husks, straw, and bagasse, the latter of which can serve as a natural adsorbent. This study aimed to investigate the impact of UCO pre-treatment on FFA content. The research comprised three stages: preparation, adsorption, and analysis. Initially, the FFA content in UCO was 5.50 %. The pre-treatment of UCO involved using bagasse with varying stirring speeds (0, 150, 200 rpm) and adsorption temperatures (70, 85, 100 oC). Optimal pre-treatment conditions were identified, with the most significant reduction in FFA to 1.49 % observed at 200 rpm and 100 oC. The utilization of bagasse as a natural adsorbent effectively reduces the high FFA content in UCO as part of its pre-treatment process.

Page 29 of 29 | Total Record : 289

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