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All Journal JURNAL INTEGRASI PROSES Konversi Jurnal Chemurgy Jurnal Teknik Industri Terintegrasi (JUTIN) Jurnal Surya Teknika Equilibrium Journal of Chemical Engineering Jurnal Riset Teknologi Pencegahan Pencemaran Industri REACTOR : Journal of Research On Chemistry And Engineering Jurnal Teknologi Kimia Unimal CHEMTAG Journal of Chemical Engineering Journal of Industrial Community Empowerment SAINTI: Majalah Ilmiah Teknologi Industri Jurnal Teknologi Kimia Mineral Journal of Energy, Materials, & Manufacturing Technology Majalah Teknik Industri Jurna Beta Kimia Communication in Food Science and Technology Journal Of Chemical Process Engineering PATRIOTIK: Jurnal Inovasi dan Pemberdayaan Masyarakat ISTA Online Technologi Journal
Muhammad Zulfikar Luthfi
Politeknik Industri Petrokimia Banten
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Social Sciences Other

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Pengaruh Kondisi Temperatur Pirolisis Tandan Kosong Kelapa Sawit Terhadap Komposisi Produk Tar Nury, Dennis Farina; Luthfi, Muhammad Zulfikar; Zullaikah, Siti
REACTOR: Journal of Research on Chemistry and Engineering Vol. 3 No. 1 (2022)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v3i1.47

Abstract

Oil palm empty fruit bunch (EFB) is one of the biomass wastes that have a great potential of a bioenergy resource due to its natural properties, such as high calorific value. The conversion of EFB biomass into valuable biofuels can achieved through biochemical and thermochemical processes. Tar (bio oil), the liquid product from the pyrolysis is one of the most attractive biofuels. The study aims to determine the effect of temperature process of pyrolysis EFB on its tar production under droptube reactor. The results showed that maximum tar yield was 43,80% obtained at 500 °C. The EFB tar produced at 500 °C was also determined to have a higher of phenol compound at 51,9%. The high phenolic content indicates its potential to be used for the production of renewable phenolic resins. Hence, the present work of pyrolysis of EFB presents itself as a promising method to produce phenol rich tar (bio-oil) from biomass waste.
UJI EFEKTIVITAS ADSORBEN DARI KULIT DURIAN TERHADAP KADAR COD DAN TSS PADA LIMBAH CAIR INDUSTRI TAHU Nury, Dennis Farina; Damayanti, Alfira Putri; Deviany, Deviany; Luthfi, Muhammad Zulfikar
Jurnal Chemurgy Vol 9, No 2 (2025): Jurnal Chemurgy-Desember 2025
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v9i2.21739

Abstract

AbstrakPenelitian ini bertujuan untuk mengevaluasi efektivitas adsorben arang aktif dari kulit durian dalam menurunkan kadar BOD dan COD pada limbah cair industri pengolahan rumput laut. Proses adsorpsi dilakukan dengan variasi massa adsorben dan waktu kontak untuk menentukan kondisi optimum. Hasil terbaik diperoleh pada perlakuan massa adsorben 100 gram dengan waktu kontak 2 jam, yang menghasilkan penurunan BOD sebesar 74,4 mg/L (6,06%) dan COD sebesar 224,1 mg/L (21,64%). Penurunan kadar BOD dan COD menunjukkan bahwa peningkatan massa adsorben dan waktu kontak memberikan pengaruh positif terhadap kemampuan adsorpsi. Namun demikian, efektivitas adsorpsi dapat dipengaruhi oleh faktor kejenuhan adsorben, fouling pada permukaan, serta proses desorpsi yang terjadi pada waktu kontak lebih lama. Karakteristik proses adsorpsi dianalisis menggunakan model isoterm Langmuir dan Freundlich. Hasil analisis menunjukkan bahwa data adsorpsi lebih sesuai dengan model isoterm Langmuir, yang mengindikasikan terjadinya adsorpsi monolayer pada permukaan homogen. Dengan demikian, optimasi massa dan waktu kontak diperlukan agar adsorpsi berlangsung efektif dalam menurunkan beban pencemar organik. Kata Kunci: adsorpsi, arang aktif, kulit durian, BOD, COD, isoterm LangmuirAbstract This study aims to evaluate the effectiveness of activated carbon adsorbent derived from durian peel in reducing BOD and COD levels in wastewater from the seaweed processing industry. The adsorption process was conducted by varying the adsorbent mass and contact time to determine the optimum conditions. The best result was achieved with 100 grams of adsorbent and 2 hours of contact time, resulting in a BOD reduction to 74.4 mg/L (6.06%) and COD to 224.1 mg/L (21.64%). The decrease in BOD and COD levels indicates that increasing adsorbent mass and contact time positively influences adsorption efficiency. However, the adsorption performance may be limited by adsorbent saturation, surface fouling, and desorption at prolonged contact times. The adsorption characteristics were analyzed using Langmuir and Freundlich isotherm models. The results revealed that the Langmuir isotherm better described the adsorption process, indicating monolayer adsorption on a homogeneous surface. Therefore, optimizing the adsorbent mass and contact time is crucial to achieving efficient organic pollutant removal. Keywords: adsorption, activated carbon, durian peel, BOD, COD, Langmuir isotherm
Technical and Economic Evaluation of Agricultural Waste-Based Biological Agents for Laboratory-Scale Ammonia Removal Wiratama, Ihsan; Suhirman, Suhirman; Arvianto, Rizky Ibnufaatih; Nainggolan, Denny Hendrik; Puteri, Denanda Clarasati; Putra, Muhammad Iqbal; Luthfi, Muhammad Zulfikar
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 2 (2026): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i2.56944

Abstract

Ammonia contamination in water poses serious ecological risks, while commercial bioremediation agents remain costly for widespread application. This study evaluated the technical and economic performance of a self-formulated biological agent made from golden apple snail shells and banana pseudostems for ammonia removal. A laboratory-scale preliminary experiment used 500 mL batch reactors containing synthetic wastewater in a 2 × 3 × 3 factorial design without replication, comparing EM4 and the self-formulated agent at initial ammonia concentrations of 10, 30, and 50 ppm over 1, 2, and 3 days. Ammonia was measured by the Nessler spectrophotometric method and analyzed using ANOVA GLM. The self-formulated agent showed performance comparable to EM4, with both achieving more than 80% removal under suitable conditions. Removal efficiency was influenced by the interaction between ammonia load and contact time, while cost analysis indicated a potential 92.1% saving. Further replicated pilot-scale studies with abiotic controls and real wastewater are recommended.
EVALUASI DOSING FLOKULAN TERHADAP WAKTU PENGENDAPAN JUICE PADA SINGLE TRAY CLARIFIER DI PT. PEMUKASAKTI MANISINDAH Nury, Dennis; Sufra, Rifqi; Tiara, Mega; Aulia, Siti Aisyah Rahimah; Luthfi, Muhammad Zulfikar
IONTech Journal Vol. 4 No. 2 (2023): Agustus 2023
Publisher : Institut Sains dan Teknologi Al-Kamal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62702/ion.v4i2.88

Abstract

Abstrak Salah satu parameter untuk mendapatkan gula sesuai standar SNI adalah kemurnian nira. Nira merupakan cairan hasil ekstraksi tebu. Nira akan dipisahkan dari kotoran menjadi nira jernih dengan ditambahkan flokulan. Konsentrasi flokulan juga sangat berpengaruh terhadap pengendapan nira. Penelitian ini bertujuan menentukan dosis flokulan yang efektif untuk meningkatkan laju pengendapan kotoran nira dan mengetahui dosis flokulan yang dapat mempengaruhi kualitas clear juice atau nira encer. Pengujian yang dilakukan meliputi pengujian jar test, pengukuran turbiditas, pH dan pengamatan warna. Hasil penelitian menunjukkan bahwa dosis flokulan dapat mempengaruhi kualitas clear juice yang dihasilkan. Berdasarkan tiga aspek yaitu pH clear juice, laju pengendapan dan turbiditas, dosing flokulan yang baik yaitu pada 7 ppm dengan kondisi pH awal 7,8 Kata kunci: clear juice, flokulan, jar test, nira, turbiditas Abstract One of the parameters to obtain sugar according to SNI standards is the purity of nira. nira is the liquid extracted from sugarcane. Nira will be separated from impurities into clear nira by adding flocculants. Flocculant concentration is also very influential on the precipitation of nira. This study aims to determine the dose of flocculant that is effective to increase the rate of precipitation of nira impurities and determine the dose of flocculant that can affect the quality of clear juice or dilute nira. Tests conducted include jar test, turbidity measurement, pH and color observation. The results showed that the dose of flocculant can affect the quality of clear juice produced. Based on three aspects, namely clear juice pH, settling rate and turbidity, good flocculant dosing is at 7 ppm with initial pH conditions of 7.8. Keywords: clear juice, flocculant, jar test, sugarcane juice, turbidity
PENGARUH MASSA KARBON AKTIF DAN KONSENTRASI ADSORBAT DALAM PENYERAPAN ZAT WARNA METILEN BLUE Nury, Dennis; Luthfi, Muhammad Zulfikar; Deviany, Deviany; Achmad, Feerzet; Panjaitan, Jabosar Ronggur Hamonangan
IONTech Journal Vol. 4 No. 2 (2023): Agustus 2023
Publisher : Institut Sains dan Teknologi Al-Kamal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62702/ion.v4i2.89

Abstract

In this study, the effect of activated carbon mass and methylene blue solution concentration on adsorption capacity, the length of time required to reach equilibrium, and isothermal modeling of activated carbon material in the adsorption process were studied. The variables used are the mass of activated carbon as much as 100 mg, 75 mg, and 50 mg and the concentration of methylene blue solution of 20, 40, 60, 80, and 100 ppm. The adsorption process in the three mass variations occurred at an optimum contact time of 80 and 90 minutes with an adsorption percentage of 99%. Adsorption of methylene blue dye by activated carbon from durian peel follows Freundlich isothermal modeling with a K value of 15846.44 mg/g and 1/n of 23.666 which shows an indicator of concentration dependence of the amount of energy associated with the adsorption process.
Kinetics of Ammonia Biodegradation Using EM4 with Palm Sugar as an External Carbon Source Puteri, Denanda Clarasati; Arvianto, Rizky Ibnufaatih; Suhirman, Suhirman; Ardian, Adna Ivan; Putra, Muhamad Iqbal; Luthfi, Muhammad Zulfikar; Wiratama, Ihsan; Jerry, Jerry; Nury, Dennis Farina
Jurnal Beta Kimia Vol 6 No 1 (2026): Volume 6 Issue 1, May 2026
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jbk.v6i1.27517

Abstract

Biological treatment of ammonia requires sufficient carbon availability to maintain stable microbial activity and sustain optimal degradation rates. This study evaluates the kinetics of ammonia biodegradation using an EM4 microbial consortium supplemented with palm sugar as an external carbon source in aerobic batch reactors. Initial ammonia concentrations of 10, 30, and 50 ppm were evaluated over six days of operation. Monitored parameters included ammonia concentration, pH, and biomass (MLSS), while kinetic evaluation applied a pseudo–first‑order model via the ln(St/S0)–time relationship. The results showed removal efficiencies of 79.0–83.4%, accompanied by MLSS increases from ~2,000 to ~4,600 mg/L with higher initial concentrations. The pH range of 5.8–8.5 remained conducive to microbial activity. The ln(St/S0) curves exhibited strong linearity, confirming the suitability of the pseudo–first‑order model, and the reaction rate constants increased under higher substrate and biomass conditions. These findings indicate that palm sugar is effective as an external carbon source for sustaining process stability and accelerating ammonia removal. The integration of EM4 with a natural carbon source demonstrates potential as an efficient, economical, and readily implementable biological approach for ammonia treatment in wastewater.
PENGARUH LEVEL INTERPHASE TERHADAP NILAI SPLITTING DEGREE DAN YIELD PRODUKSI PADA PROSES HIDROLISIS PADA COLUMN SPLITTING : - Aldi Dwi Ramadhan; Muhammad Zulfikar Luthfi
SAINTI: Majalah Ilmiah Teknologi Industri Vol. 17 No. 2 (2020)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/

Abstract

Sebuah perusahan di Sumatera Utara bergerak di bidang pengolahan minyak sawit menjadi fatty Acid dan glycerin. Dalam proses industri yang ada saat ini, minyak sawit mentah dihidrolisis menjadi asam lemak dan gliserol pada suhu 250°C dan tekanan 53 bar selama 7-8 jam pada kolom splitting. Derajat keberhasilan proses reaksi hidrolisis yaitu semakin tinggi nilai splitting degree maka semakin sempurna reaksi hidrolisis. Permasalahan yang sering terjadi yaitu Acid value dan Saponification Value pada proses di splitting tidak maksimal dikarenakan salah satu faktor seperti ketinggian level Interphase. Acid value dan Saponification Value merupakan hal yang menentukan nilai dari splitting degree. Dari hal itu, perlu melakukan analisa pengaruh level Interphase terhadap nilai splitting degree serta Yield proses hidrolisis di dalam kolom splitting. Hasil menunjukkan level Interphase yang efesien untuk proses hidrolisis fat splitting yaitu level Interphase 3 oil = 4,2 meter (Point 0).
ANALYSIS OF AMMONIA ASSIMILATION KINETICS AND DETERMINATION OF SUBSTRATE INHIBITION CONDITIONS IN VARIATIONS OF MOLASSES DOSE IN A BATCH REACTOR SYSTEM Putra, Muhammad Iqbal; Arvianto, Rizky Ibnufaatih; Suhirman, Suhirman; Ardian, Adna Ivan; Puteri, Denanda Clarasati; Nury, Dennis Farina; Luthfi, Muhammad Zulfikar; Lestari, Maghfira Arum
Equilibrium Journal of Chemical Engineering Vol 10, No 1 (2026): Volume 10, No 1 July 2026 (First Online)
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v10i1.115734

Abstract

The purpose of this study is to find the inhibitory phenomena caused by an excessive organic load and to estimate the ideal molasses dosage for ammonia assimilation by Saccharomyces spt. The experiment was carried out utilizing a batch reactor system with different molasses doses of 0, 5, 10, 15, and 20 mL at a constant starting ammonia content of 50 mg/L. Ammonia assimilation followed a pseudo-first-order model with a significant coefficient of determination R2 > 0.90 in the active dose range, according to the kinetic studies. The results confirmed that a dose of 10 mL was the optimum condition, producing the highest reaction rate constant (k) of 0.5107 day-1 and an ammonia reduction efficiency of 93.58%. On the other hand, raising dosage 20 mL caused a substrate inhibition phenomenon, which was marked by a drop in the k value to 0.2268 day-1 and a low ammonia reduction efficiency of 58.42% because of the initial acidification. The ammonia removal rate and biomass concentration (MLSS) had a very strong positive linear connection (r=0.98) according to Pearson correlation analysis, indicating that nitrogen assimilation with biomass growth-rather than physical volatilization-is the primary mechanism of removal. In order to optimize ammonia absorption performance without causing environmental toxicity, this study suggests a dose of 10 mL.
Co-Authors Adelia, Putri Jesika Ahmad Rifqiyan Farohi Aini, Apsari Puspita Aldi Dwi Ramadhan Apsari Puspita Aini Ardian, Adna Ivan Arum, Amalia Sekar Arvianto, Rizky Ibnufaatih Aulia, Siti Aisyah Rahimah Auriyani, Wika Atro Betariani, Khairunisa Choerudin, Choerudin Chrystover, Endrigo Damayanti, Alfira Putri Dennis Farina Nury Deviany, Deviany Eko Supriadi Enny Nurmalasari Fahlovi, Oldy Farohi , Ahmad Rifqiyan Febriyanto, Pramahadi Feerzet Achmad Ferry Ikhsandy Fitriyani, Vira Handoko, Yohanes Tri Harmiwati N. H Hasnah Ulia Hibrah Hibrah Hibrah, Hibrah Jabosar Ronggur Hamonangan Panjaitan Janah, Dikri Uzlifah Jerry Jerry Jerry, Jerry Khairati, Miftahul Kurniawati, Intan Wahyuning Lestari, Maghfira Arum Manurung, Martin Sugiarto Maulana, Akmal Mayastuti, Sherina Miftahul Khairati Miftahurrahmah Miftahurrahmah, Miftahurrahmah Monita Pasaribu Muhammad Nasyarudin Iqbal, Muhammad Nasyarudin N. H. , Harmiwati N. H., Harmiwati N.H, Harmiwati Nainggolan, Denny Hendrik Nasyarudin Iqbal, Muhammad Naufal, Hafidz Ningrum, Khofifah Anggitiya Nugroho , Muhammad Erwin Cahyo Nugroho, Muhammad Erwin Cahyo Nury , Dennis Farina Nury, Dennis Oktria, Dandi Permadani, Resi Levi Puji Rahayu Puteri, Denanda Clarasati Putra, Muhamad Iqbal Putra, Muhammad Iqbal Putra, Renold Ramadhan Ramadhan, Aldi Dwi Renold Ramadhan Putra Rifqi Sufra RR. Ella Evrita Hestiandari Safitri, Nurul Ulfa Setiadi, Tjandra Siti Zullaikah SUHIRMAN SUHIRMAN Surya, Dhanu Fransgio Pratama Sutri, Reni Tiara, Mega Tri Widjaja Tutuka, Rachmadi Ulia, Hasnah Variyana, Yeni Wiratama, Ihsan Yahya , Agung Kurnia Yahya, Agung Kurnia Zulkipli, Rohiman Ahmad