cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Agung Ari Wibowo
Contact Email
agung.ari@polinema.ac.id
Phone
+62341404424
Journal Mail Official
jtkl@polinema.ac.id
Editorial Address
Jl. Soekarno Hatta No. 9, Malang, Indonesia
Location
Kota malang,
Jawa timur
INDONESIA
Jurnal Teknik Kimia dan Lingkungan
Published by Politeknik Negeri Malang
ISSN : 25798537     EISSN : 25799746     DOI : http://dx.doi.org/10.33795/jtkl
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology
JTKL editors welcome manuscripts in the form of research articles, literature review, or case reports that have not been accepted for publication or even published in other scientific journals. Articles published in cover key areas in the development of chemical and environmental engineering sciences, such as: Energy Waste treatment Unit operation Thermodynamic Process simulation Development and application of new material Chemical engineering reaction Biochemical Biomass Corrosion technology The "JURNAL TEKNIK KIMIA DAN LINGKUNGAN" journal is a peer-reviewed Open Access scientific journal published by Politeknik Negeri Malang. This journal first appeared in October 2017. The main purpose of the journal was to support publication of the results of scientific and research activities in the field of Chemical and Environmental Engineering. It is published twice a year in April and October.
Arjuna Subject : Teknik Kimia (semua kategori) - Kimia Proses dan Teknologi
Articles 5 Documents
 1 
Search results for , issue "Vol. 1 No. 1 (2017): October 2017" : 5 Documents clear
Fermentasi Anaerobik Biogas Dua Tahap Dengan Aklimatisasi dan Pengkondisian pH Fermentasi Purwinda Iriani; Yanti Suprianti; Fitria Yulistiani
Jurnal Teknik Kimia dan Lingkungan Vol. 1 No. 1 (2017): October 2017
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (964.831 KB) | DOI: 10.33795/jtkl.v1i1.16

Abstract

Generally, biogas production on the household scale is using one-stage anaerobic fermentation technology, which accommodates two main processes of biogas production, namely acetogenesis and methanogenesis. An obstacle of using one-stage biogas digester is the imbalance of the fermentation process that indicated by the increase of organic load rate and shorter retention time that lead to un-optimal biogas productivity. This research undertook the application of two-stage anaerobic digestion, supported by adjusting the initial pH for both acetogenic and methanogenic processes. Firstly, the research initiated by acclimatization (activation) process of acetogenic and methanogenic bacteria via fermentation in laboratory scale (19 L) digesters, separately. The results of acetogenic bacteria acclimatization process on cow dung media showed the pH stability needed for the reaction acetogenic, in the range of 5-6, while the control showed the pH changes still in the neutral pH range (6-7). The substrate from lab-scale acetogenic and methanogenic digester, then used as a starter for pilot-scale digester (125 L and 500 L, respectively). The mixture of water and cow dung were adjusted at initial pH 5.5 on acetogenic digester for 2 weeks. Those material were used for biogas production in the methanogenic digester. The result of the methanogenic process showed an increasing volume of biogas and the composition of methane (CH4) in the biogas. The highest CH4 composition was obtained on the 20th day, which reached 74.82%, and the highest volume of biogas production was at day 22, with the rate of 8.87 L/day. The highest energy potential obtained was 217.66 kJ/day.
Review Pemanfaatan Design Expert untuk Optimasi Komposisi Campuran Minyak Nabati sebagai Bahan Baku Sintesis Biodiesel Reshita Amalia Ramadhani; Dody Herdian Saputra Riyadi; Bayu Triwibowo; Ratna Dewi Kusumaningtyas
Jurnal Teknik Kimia dan Lingkungan Vol. 1 No. 1 (2017): October 2017
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (768.923 KB) | DOI: 10.33795/jtkl.v1i1.5

Abstract

Mixing different types of vegetable oils for synthesis of biodiesel is one of the efforts for renewable alternative energy. Mixed oil of vegetable oils more potential because it is not difficult to finding raw materials and not useful yet. Vegetable oils mixture as raw materials used include: Jatropha curcas oil, nyamplung oil and waste cooking oil. The mixed and optimized compositions use the simplex lattice design method with a total mixture. The data to be obtained is the influence data of each mixed oil to decrease of FFA during esterification reaction. Simplex lattice design method is one of the methods available in the software Design Expert 10.0. The designs used to optimize the formula on different amounts of different material compositions. The biodiesel synthesis is run based on the experimental design produced by the Expert Design 10.0 program. The use of lattice simplex method design: determination formula, optimizing formulation variable and total number of runs, keeping total concentration constant. ANOVA (Analysis of variance) to determine the significance of response analysis among variables and can know the suggested model. Desirability is a method that shows the program's ability to meet the criteria specified in the final product. The desired value that is critical to the desired product improvement program is so perfect.
Produksi Crude Selulase dari Bahan Baku Ampas Tebu Menggunakan Kapang Phanerochaete chrysosporium Sri Rulianah; Zakijah Irfin; Mufid; Prayitno
Jurnal Teknik Kimia dan Lingkungan Vol. 1 No. 1 (2017): October 2017
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (915.771 KB) | DOI: 10.33795/jtkl.v1i1.24

Abstract

Bagasse contain high cellulose which potentially to be used to raw material for producing cellulase enzyme using fungi Phanerochaete chrysosporium. This fungus has ability to produce cellulase enzymes from substrates which contain cellulose and also produce enzymes that can degrade lignin content so it didn’t need the delignification process. The objective of this study was to convert cellulose in bagasse to be crude cellulase enzymes by using Phanerochaete chrysosporium and determine the effect of substrate concentration and fermentation time to the enzyme activity. This research was conducted by drying and reducing the bagasse particle size, rejuvenating mold Phanerocheate chrysoporium, making inoculum in liquid medium, fermenting bagasse in accordance with the variable, with media NLM (nitrogen limited media) using Phanerocheate chrysoporium. Fermentation results were filtered, and it was analyzed the activity of crude cellulase. The variable in this study was the time of fermentation 9, 11, 13, 15, and 17 days and substrate concentration: 5, 6, and 7 % b/v. Crude cellulose was filtered and was analyzed the enzyme activity by DNS (dinitro salicylic acid) reagent, using UV-Vis spectrophotometer. The best result of this study was the crude cellulase with highest activity 91,304 U/mL for 7 % substrate concentration with fermentation time 17 days.
Studi Kinetika Reaksi Metanolisis Pembuatan Metil Ester Sulfonat (MES) Menggunakan Reaktor Batch Berpengaduk Abdul Chalim; Agung Ari Wibowo; Ade Sonya Suryandari; Muhammad Muhajjir Syarifuddin; Moh. Tohir
Jurnal Teknik Kimia dan Lingkungan Vol. 1 No. 1 (2017): October 2017
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1021.599 KB) | DOI: 10.33795/jtkl.v1i1.23

Abstract

Surfactant is a surface active agent which is widely applied in chemical industry related to its ability to stabilize the emulsion between the oil phase and the water phase. Surfactant-based on vegetable oil is a technology developed in the field of surfactant which has been dominated by surfactants made from petroleum. Methyl ester sulfonate (MES) is an anionic surfactant produced by the reaction between fatty acid methyl ester with a sulfonating agent or called as sulfonation reaction. MES undergoes an advanced process called methanolysis and neutralization reactions. This study investigated the effect of reactant molar ratio, reaction time and reaction temperature on MES yield on methanolysis reaction. The highest MES yield of 49.71% was achieved at a reaction temperature of 120°C, the reaction time of 120 minutes and the molar ratio between MES and methanol of 1:3. The rate constants of methanolysis reactions are determined by reacting the reactants in the stirred batch reactor under those operating conditions.
Pengaruh Komposisi Air Laut dan Pasir Laut Sebagai Sumber Energi Listrik Okky Putri Prastuti
Jurnal Teknik Kimia dan Lingkungan Vol. 1 No. 1 (2017): October 2017
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (266 KB) | DOI: 10.33795/jtkl.v1i1.13

Abstract

Electrical energy is energy derived from electric charge that causes static electric field or the movement of electrons in a conductor (conductor of electricity) or ions (positive or negative) in a liquid or gas. The electrical energy needed by society to lighting, heating, cooling, or to move back in mechanical equipment to produce other forms of energy. Utilization of a mixture of sand and sea water is one of the methods of renewable energy. In other hand, utilization of sea water is known that it can generate electricity. This study is a preliminary study to combine sea water and sea sand as raw materials. The purpose of this study was to analyze the optimal composition of sea water and sea sand in generating electrical energy. Source of sea water and sea sand comes from Kenjeran Beach Surabaya Indonesia. Research methods such as mixing sea water and sea sand with a weight percent ratio sea sand in the mixture of 0%, 25%, 50%, 75%, and 100%. The electrical energy generated is determined by observing the current flow and power are seen on the multi meter. Based on the results of current and voltage measurements obtained respectively 2,4 V; 2,3 V; 2,3 V; 1,8 V; and 0,9 V. So the results of the analysis of the composition of sea water and sea sand can potentially be used as a source of electrical energy, although sea sand as agent of resistant.

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2017 2017


Reset
Filter By Issues
All Issue Vol. 9 No. 2 (2025): October 2025 Vol. 9 No. 1 (2025): April 2025 Vol. 8 No. 2 (2024): October 2024 Vol. 8 No. 1 (2024): April 2024 Vol. 7 No. 2 (2023): October 2023 Vol. 7 No. 1 (2023): April 2023 Vol. 6 No. 2 (2022): October 2022 Vol. 6 No. 1 (2022): April 2022 Vol. 5 No. 2 (2021): October 2021 Vol. 5 No. 1 (2021): April 2021 Vol. 4 No. 2 (2020): October 2020 Vol. 4 No. 1 (2020): April 2020 Vol. 3 No. 2 (2019): October 2019 Vol. 3 No. 1 (2019): April 2019 Vol. 2 No. 2 (2018): October 2018 Vol. 2 No. 1 (2018): April 2018 Vol. 1 No. 1 (2017): October 2017 More Issue