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All Journal Reaktor Jurnal Sains Materi Indonesia Jurnal Sains dan Teknologi CHEMICA Jurnal Teknik Kimia Rekayasa Mesin Jurnal Dinamika Penelitian Industri Jurnal Litbang Industri Konversi Science and Technology Indonesia Faktor Exacta Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia IKRA-ITH ABDIMAS Jurnal Teknik Kimia Jurnal Ilmiah Teknik Kimia Jurnal Sains dan Teknologi Reaksi Jurnal Riset Teknologi Pencegahan Pencemaran Industri Jurnal Pengabdian Kolaborasi dan Inovasi IPTEKS Bharasumba Jurnal Multidispliner JURNAL REKAYASA KIMIA & LINGKUNGAN

Cundari, Lia

Department Of Chemical Engineering, Faculty Of Engineering, Universitas Sriwijaya, Indonesia

Author-ID : 551090

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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The Effect of Flowrate on Dye Removal of Jumputan Wastewater in a Fixed-Bed Column by Using Adsorption Model: Experimental and Breakthrough Curves Analysis Lia Cundari; Bazlina Dawami Afrah; Asyeni Miftahul Jannah; Patrick Rudy Meizakh; Muhammad Alik Aziz; Wulan Ayum Larasati
Reaktor Volume 22 No. 1 April 2022
Publisher : Dept. of Chemical Engineering, Diponegoro University

One of the traditional arts in Indonesia is Jumputan fabric which produced by using tie and dye technic. The Jumputan wastewater contains organic compounds which can decrease the oxygen content in water. An economic and applicable process to handle the Jumputan wastewater is adsorption. The research was conducted to find out the effect of flowrate to the adsorption performance of the dye onto activated carbon in a continuous fixed-bed column based on the breakthrough curve parameter. The activated carbon made from betel nuts (Cyrtostachys lakka) with size particle of 60 mesh. The column dimension was 2 inches of inside diameter and 60 cm of height column. The bed height was 10 cm. The feed pumped from the top of column with variation of flowrate of 10, 20 and 30 ml/min. The absorbance of the dye was analyzed by using UV-Vis spectrophotometer. The adsorption column models were analyzed using Thomas, Yoon-Nelson, and Adam-Bohart. The result of this research was the dye removal efficiency decreased with the increase in flowrate, which was 61.4%; 56.9%; and 47.6% for 10, 20, and 30 ml/min respectively. Feed flowrate showed a negative effect on the saturation time, the higher the flowrate, the faster it reaches the saturation point of the adsorbent. The breakpoints were 180, 260, and 420 minutes at 30, 20, 10 ml/min flowrate. The model data indicated that Thomas and Yoon-Nelson are fitted well with the experimental results. The models show the largest regression and the smallest error with the value of each 0.99 and 0.0035 at flowrate of 10 ml/min.

Electro-adsorption as a Hybrid Processing to Removed Oil from Synthetic Oily Solution by Using Activated Carbon and Iron Electrodes Lia Cundari; Bazlina Dawami Afrah; Suci Dwijayanti; Alvina Suryadinata; Aldi Ramadhani
Science and Technology Indonesia Vol. 7 No. 3 (2022): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Biosolar contains oil, fatty acids, emulsifiers, bactericides, and other chemicals. If the oil contents are mixed with water, it will become hazardous waste and affect drinking water sources, endanger human health, air pollution, affect agricultural production, and damage the natural landscape, so the oil content must be processed to reduce its hazardous content. One of the methods used in treating oily solutions is adsorption. The adsorption method for oily solution treatment is ineffective because it requires several stages, so the required capital is relatively larger and takes longer. Electro-adsorption is one of the methods that is being developed for treating oily solutions. Electro-adsorption is a hybrid separation technology to break down oil emulsions in wastewater and some other organic content. The purpose of this study is to characterize the activated carbon and determine the effect of voltage and time on synthetic oily solution treatment in terms of COD value and oil-fat content. A synthetic oily solution is made by mixing 1 g of biosolar/B30 into the water from the Musi River to a volume of 1 L. The application of the electro-adsorption method uses commercially activated carbon as an adsorbent and iron as an electrode. Variations given to the process with voltage 0, 5, 10, 15 V and time 0, 5, 10, 15, 20, and 25 minutes. The characteristic of activated carbon showed a size change in the pore size from 2.58 µm to 1.98 µm and a reduction of surface area from 740 (±180) m2/g to 730 (±120) m2/g. The electro-adsorption method was effective in treating oily solutions. The decrease of COD reaches the maximum level at a voltage 10 V for 25 minutes, which was 75.92% from 62.33 mg/L to 15 mg/L initially, while the concentration of oil-fat obtains the maximum level at a voltage of 5 V for 5 minutes that is equal to 99.65%, initially 303.19 mg/L to 1.05 mg/L. The optimum condition of the electro-adsorption process in synthetic oily solution was at the voltage of 5 V and a time of 5 minutes. The electro-adsorption process is an effective method to treat synthetic oily solutions.

Evaluasi Kinerja Heat Exchanger E-401 Pada Unit Pe3 Pt. Lotte Chemical Titan Nusantara Achmad Naufal Al Ghifary; Amanda Nabila Hasya; Tubagus Riadz; Lia Cundari
Jurnal Sains dan Teknologi Reaksi Vol 20, No 01 (2022): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v20i01.3255

Heat exchanger adalah peralatan yang digunakan dalam proses perpindahan panas antara fluida dingin dan panas yang memiliki perbedaan temperatur tanpa terjadi proses perpindahan massa di dalamnya. Permasalahan yang ada pada alat heat exchanger berupa pembentukan fouling yang dapat dipengaruhi oleh kondisi operasi yaitu temperatur fluida. Pembentukan fouling pada alat heat exchanger dapat menurunkan efisiensi kerja dari alat ini. Dalam laporan ini, dilakukan evaluasi kinerja heat exchanger E-401 pada Unit PE-3 PT. Lotte Chemical Titan Nusantara untuk mengetahui pengaruh dari gangguan pembentukan fouling terhadap kinerja dari heat exchanger E-401. Evaluasi kinerja heat exchanger E-401 diselesaikan dengan metode perhitungan Kern yang menggunakan aplikasi Microsoft Excel. Penelitian ini mengambil data operasional heat exchanger E-401 dalam rentang periode Agustus hingga Desember 2021 dengan tingkat efisiensi aktual sebesar 64.07%; 47.15%; 63.53%; 66.08%; 73.23%. Nilai fouling factor hasil perhitungan data aktual sebesar 0.0002 m2hOC/kcal. Heat exchanger E-401 memenuhi tingkat efisiensi desain jika mencapai angka 74.5827% dan nilai fouling factor desain sebesar 0.0007 m2hOC/kcal. Untuk itu, perlu dilakukan optimasi desain heat exchanger agar meningkatkan efisiensi kinerja alat.Kata Kunci: Heat Exchanger, Fouling Factor, Efisiensi

PROCESSING OF TEMPE LIQUID WASTE IN STAGES USING COMBINATION OF COAGULATION AND ELECTROCOAGULATION METHODS Lia Cundari; Faisal Akbar Adin; Asyeni Miftahul Jannah; Dyos Santoso
Konversi Vol 11, No 2 (2022): OKTOBER 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v11i2.14206

The purpose of this study was to determine the effect of slow stirring time of flocculation and stress on the electrocoagulation process on turbidity levels and pH values of tempe liquid waste. The research method used is a combination of coagulation and electrocoagulation processes carried out in batches. Variations carried out were slow stirring time of flocculation (10, 15, 20, 25 and 30 minutes) and variation of voltage (3,6, and 9 volts). The results showed that the stirring time and electrocoagulation voltage affected the turbidity of the tempe liquid waste but did not affect the pH level of the tempe liquid waste. The best slow flocculation time was 20 minutes with a turbidity yield of 31.04 NTU and a percent removal of turbidity of 91.56%. The electrocoagulation voltage of 9 volts resulted in a turbidity of 2.01 NTU and a percent turbidity removal of 93.52%.

Studi Kasus Terhadap Alat Penukar Kalor 127-C PUSRI IV Berbasis Simulasi Program Heat Transfer Research Inc. (HTRI) Dengan Variabel Jumlah Plug dan Material Tube Nucke Aurelia; Lia Cundari; Winandyo Mangkoto
Faktor Exacta Vol 15, No 4 (2022)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/faktorexacta.v15i4.14148

Heat exchanger (HE) is used as a medium for heat exchange between fluids. One of the most critical HE at PUSRI, is the 127-C (Ammonia Refrigerant Condenser) in the PUSRI-IV ammonia unit which is supported by 2 identical HEs, namely 127-CA and 127-CB. This HE serves to condense ammonia gas into liquid ammonia. After evaluating the performance of this HE, there was an average decrease of 31.46%. Therefore, it is necessary to optimize this HE, one of which is through research using the HTRI (Heat Transfer Research Inc.) simulator to see the effect of the number of plugs and tube material replacement. The variable number of plugs used are 17, 250, 500, 750 and 1000 for the 127-CA and 21, 250, 500, 750 and 1000 for the 127-CB. As for the tube material variables, namely Carbon Steel (CS), 304- Stainless Steel (304-SS), and 316- Stainless Steel (316-SS). After simulation and analysis were carried out by considering the factors of heat transfer performance, corrosion resistance and cost-benefit, it was concluded that re-tubing with 304-SS material was the most appropriate choice. The maximum number of plugs for CS material is 1000 pieces while for 304-SS and 316-SS materials it is 750 pieces. Heat exchanger (HE) is used as a medium for heat exchange between fluids. One of the most critical HE at PUSRI, is the 127-C (Ammonia Refrigerant Condenser) in the PUSRI-IV ammonia unit which is supported by 2 identical HEs, namely 127-CA and 127-CB. This HE serves to condense ammonia gas into liquid ammonia. After evaluating the performance of this HE, there was an average decrease of 31.46%. Therefore, it is necessary to optimize this HE, one of which is through research using the HTRI (Heat Transfer Research Inc.) simulator to see the effect of the number of plugs and tube material replacement. The variable number of plugs used are 17, 250, 500, 750 and 1000 for the 127-CA and 21, 250, 500, 750 and 1000 for the 127-CB. As for the tube material variables, namely Carbon Steel (CS), 304- Stainless Steel (304-SS), and 316- Stainless Steel (316-SS). After simulation and analysis were carried out by considering the factors of heat transfer performance, corrosion resistance and cost-benefit, it was concluded that re-tubing with 304-SS material was the most appropriate choice. The maximum number of plugs for CS material is 1000 pieces while for 304-SS and 316-SS materials it is 750 pieces.

Characterization of Biosorbent from Musa acuminata balbisian Peel using FTIR Spectroscopy and Its Application to Cadmium (Cd) Removal: Effect of Activator Type, pH, and Biosorbent Ratio Lia Cundari; Alna Livia Fanneza; Nanda Citra Arisma
CHEMICA: Jurnal Teknik Kimia Vol 9, No 3 (2022): December 2022
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v9i3.23992

Biosorbent that use in this study made from kepok banana peel (Musa Acuminata balbisian). The present study is done to determine the characteristic of biosorbent and the effect of activator type, pH, and ratio of biosorbent for the cadmium removal. The experiments were carried out in batch process, laboratorium scale, room temperature, and 60 mesh of biosorbent size particle. The biosorbent produced by using chemical activation method onto dry banana peel. The variation in this research was the type of activator (H3PO4 and H2SO4), pH of Cadmium (3, 4, and 5), and the ratio of biosorbent dosage to the volume of cadmium solution (1:20, 1.5:20, and 2:20 (g/ml)). The biosorbent characterized by using Fourier Transform Infra-Red (FTIR). The cadmium concentration analyzed by using Atomic Absorption Spectroscopy (AAS). Characterization with FTIR showed the differences in functional groups onto biosorbent before and after adsorption. There was a change in the spectral band of C-H and C=O functional groups for biosorbent that activated with H3PO4 and a change in the spectral band of C-H functional groups for biosorbent that activated with H2SO4. The acid activators showed the best condition was at 90 minutes contact time, pH 4 and the ratio of biosorbent dosage and the volume of 1.5:20 (g/ml). The result showed that the H3PO4 was the best acid activator in the removal of cadmium with amount of 99.91%.

PROSES PENGERINGAN NPK BERDASARKAN EVALUASI ROTARY DRYER DAN KADAR AIR NPK DI PT. PETROKIMIA GRESIK Guluh Fauziah Marintika; Lia Cundari; Farid Hayu Kurniawan
Jurnal Rekayasa Mesin Vol. 14 No. 1 (2023)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v14i1.1279

Drying is an important process in the production of NPK fertilizers. The average NPK water content in August 2021 – January 2022 was 1.64%, still exceeding a good NPK water content of < 1.5%. The high NPK moisture content resulted that review are needed in drying process through rotary dryer evaluation and observation by creating multiple linear regression math. The average thermal efficiency is calculated based on the actual data, which is 73%, do not decrease significantly and still close to the value of the design data of 90%. The mathematical equation obtained is Y1 = 114.9292 + 0.000338X1 + 0.0439062X2 -1.711792X3 -0.3749378X4 with a regression coefficient of 0.8657472. Factors that affect the NPK fertilizer water content are the air temperature of dryer, the flow rate of incoming NPK water mass, the flow rate of NPK mass and the flow rate of air dryer mass.

Tempeh Industry Wastewater Treatment using Mix Natural Adsorbents (Zeolite, Bentonite, Water Hyacinth-Activated Carbon): Effect of Mass Ratio and Dosage of Mix Adsorbents on Turbidity and pH Lia Cundari; Muhammad Radhiy Sukandar; Fahmi Nurusman
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 14 (2023): special issue
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2023.v14.no3.p41-52

Adsorption is the process of agglomeration of dissolved substances in solution by the surface of an absorbent substance which makes the material enter and collect in an absorbent substance. Natural adsorbents that function to treat tempe liquid waste are zeolite, bentonite, and water hyacinth activated carbon. The purpose of this study was to determine the effect of the mass ratio and dose of natural adsorbents on the turbidity and pH values of tempe wastewater. The mass ratio variation used was the ratio of each material in the form of zeolite: bentonite: active carbon of water hyacinth in the form of R1 (1:1:1); R2 (2:1:1); R3 (1:2:1); and R4 (1:1:2). The adsorbent dose carried out was 1.5 gr; 3 grams; and 4.5 gr per 100 ml volume of liquid waste. The contact time between the adsorbent and the liquid waste is every 15, 30, 60, 90, 120, 150 minutes. Processing of tempe liquid waste was carried out in laboratory-scale batches with 120 rpm stirring. The analysis was carried out in form of turbidity, pH, COD, BOD, and TSS. The results showed that the adsorption was able to reduce turbidity and increase the pH level up to 99% by stirring the mass ratio R2 (2:1:1) for 150 minutes with a dose of 4.5 grams. It was found that the turbidity value decreased from 520.5 NTU to 2.47 NTU =ncrease in pH levels reaching 75% at 150 minutes of stirring at a dose of 4.5 grams. Decreased pH value from 3.7 to 6.4. The maximum adsorption capacity validation results were obtained based on the Frendulinch analysis of 7.07-49.75 mg/g with a Freundlich constant of 0.67-0.70 at a dose of 4.5 grams.

Biocoagulant effectivity test in tempe wastewater treatment: the effect of biocoagulant type and dosage Lia Cundari; Ade Tiara; Kha-Rizma Yudia Zannah
Jurnal Litbang Industri Vol 13, No 2 (2023)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24960/jli.v13i2.8098.99-105

Tempe is a popular Indonesian food enjoyed by many people. However, the production process generates a significant amount of liquid waste. Liquid waste treatment can be done through coagulation and floctuation processes with the help of coagulants. The purpose of this study was to determine the effect of the type and dose of biocoagulant on the turbidity and pH values of tempe wastewater The variations included the use of various biocoagulants (papaya seeds, tamarind seeds, and moringa seeds), biocoagulant doses (500, 1000, and 1500 mg/L) and variations in slow flocculation time (10, 15, 20, 15, 25, and 30 minutes). The analysis encompassed measurements of turbidity, pH, COD, BOD, and TSS. The research data is then validated in a certified laboratory. The results showed that the type of biocoagulant, dose of biocoagulant and stirring time would affect the turbidity value of tempe wastewater but did not significantly affect the pH value. The highest reduction in turbidity was 52.3 NTU with a percent decrease in turbidity of 96.2% at pH 4.145 using 500 mg/L tamarind seed biocoagulant and stirring time of 25 minutes. The results showed that only the BOD and TSS parameters met the tempe liquid waste quality standards, so that further processing was required, such as by adsorption and electrocoagulation.

Mixture composition and coal size effect on coal water mixture quality Bazlina Dawami Afrah; Lia Cundari; Ni'matul Hakiki Vebri Awan; Illovine Hadassa; Eva Oktarinasari; Miftahurrizka Afrah
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.v30i1.1238

Coal usage as a primary energy source is targeted to continue to increase and replace petroleum as the main energy source. Further processing is required to achieve the standard fuel characteristics, one of which is through a process called Coal Water Mixture (CWM) by adding water and additives to coal to produce fuel with characteristics like heavy oil. This research was conducted to analyze the best composition and size of the coal for CWM processing using variations in coal composition (20 %; 30 %; 40 %; 50 %; and 60 %) and coal particle size (40, 80, and 120 mesh). The parameters studied for each CWM product are product quantity, inherent moisture, density, pH, and calorific value. The results of the initial analysis show that the CWM product with a coal composition of 50 % has characteristics that most closely resemble Heavy Fuel Oil (HFO). CWM product with a coal composition of 50 % with all three variations of coal size was then tested for its calorific value and the respective values were 3476.3153 cal/g; 4025.5551 cal/g; and 4488.4248 cal/g. The resulting product meets the physical characteristics qualifications, but to substitute HFO as fuel, it is necessary to use high quality coal, namely anthracite with a higher calorific value or upgrade the coal raw materials that will be used for the CWM processing.

Co-Authors Achmad Naufal Al Ghifary Achmad Zaidan Ade Tiara Agung D. Aryansyah Agung Gunawan Agus Suranto Al-Faiz, Ahmad Haris Aldi Ramadhani Aldi Ramadhani Alfatih, Muhammad Ma'ruf Alisan, Cinthya Putri Alna Livia Fanneza Althaf Taufiqurrahman Alvina Suryadinata Alvina Suryadinata Amanda Nabila Hasya Amira Siti Ramadhani Andini, Handalia Putri Annafi, Muhammad Aristya Fahrizul Ariva, Helmi Asha Aisha Julian Asnari, Muhammad Asyeni Miftahul Jannah Azhari, M. Thohir Bazlina Dawami Afrah Bobby Redian D. Dionisius David Bahrin Dedek Oktari Dwi Anggraini Dwi Budi Santoso Dyos Santoso Eki Saputra Endang Supriyatna Eva Oktarinasari Fachry Abda El Rahman Fahmi Nurusman Faisal Akbar Adin Farid Hayu Kurniawan Fitri Hadiah Fitri, Rizza Fadillah Friskha Hanifah Sakinah Gayatri, Rianyza Guluh Fauziah Marintika Habil Majid Wirawan Hadi Samhudi Herani, Lingga Putri Illovine Hadassa Ilmiaty, R. Silvia Indahsari, Siti Rachmi Januari, Ristian Julian, Asha Aisha Kha-Rizma Yudia Zannah Larasati, Wulan Ayum Leily Nurul Komariah Leonardo R. Ginting Luthfiyah A. Sayyidah Miftahurrizka Afrah Muhammad A. Rizan Muhammad Alik Aziz Muhammad Ardian Muhammad Radhiy Sukandar Nanda Citra Arisma Ni'matul Hakiki Vebri Awan Novia Sumardi Nucke Aurelia Oktarinasari, Eva Omar Ibrahim Patrick Rudy Meizakh Perdana. Ts, Redho Putri Ramadhania Putri, Anisyah Kamila R. Rosalina Rahmadian, M. Rafly Rahmadian, Muhammad R Ramadhanty, Rizky Vasya Riady, M.I. Riduansyah, Muhammad Ripaldi, Alif Rizka Wulandari Putri Rizki, Fadhilah Rosalina Rosalina RR. Ella Evrita Hestiandari Selpiana, Selpiana Shailendra, F. Habib Sinta, Eis Candra Suci Dwijayanti Suhendra, Ahmad Adi Susila Arita Susmanto, Prahady Teddy Suryadinata Tubagus Riadz Tuti Indah Sari, Tuti Indah Tuty Emilia Agustina Untung Waluyo uthfiyah A. Sayyidah wahyuningsih, dwi retno Winandyo Mangkoto Wulan Ayum Larasati Yandriani Yandriani Zalman, Arjun

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