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All Journal International Journal of Applied Power Engineering (IJAPE) JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Waste Technology Eksergi: Chemical Engineering Journal World Chemical Engineering Journal JURNAL INTEGRASI PROSES Jurnal Riset Teknologi Pencegahan Pencemaran Industri
Iqbal Syaichurrozi
Jurusan Teknik Kimia, Fakultas Teknik, Universitas Sultan Ageng Tirtayasa, Cilegon-Banten, Indonesia
Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Other

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Effect of Alum Dose in the Coagulation Process for Decreasing the Pollutant in the Palm Oil Mill Effluent: Experimental and Kinetic Analysis Iqbal Syaichurrozi; Jayanudin Jayanudin; Listiyani Nurwindya Sari; Anellysha Putri Apriantika
Eksergi Vol 19, No 3 (2022)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v19i3.7405

Abstract

Palm oil mill effluent (POME) is palm oil processing industrial waste that cannot be discharged directly into water bodies. Therefore, this waste must be treated. One method that can be used to treat it is coagulation. The purpose of this study was to investigate the effect of coagulant doses on the coagulation process for treating the POME through experimental and kinetic analysis. The alum dose was varied to 1, 3, 5, 10, 15 g/L. The volume of treated waste was 1 L. Before adding alum, the pH of POME was adjusted to 7.0 with the addition of technical grade NaOH. The coagulation process was carried out for 180 minutes at room temperature. Every 20 minutes, the pH of the liquid was measured and a fluid sample as much as ±50 mL was taken to be settled for 24 hours. Next, the total suspended solid (TSS) concentration in the supernatant was analyzed. The results showed that the addition of alum could decrease the liquid pH and increase the TSS of the liquid. The coagulation process for 180 minutes resulted in a TSS reduction efficiency of 33.3, 33.3, 37.1, 1.7, -17.8% at alum doses of 1, 3, 5, 10, 15 g/L respectively. The first-order kinetic model provided a better prediction than the second-order kinetic model with R2 values of 0.7876-0.9707 and 0.2746-0.8912, respectively.
Development of Simple Kinetic Model on Biogas Production from Co-Digestion of Vinasse Waste and Tofu Residue at Variation of C/N Ratio Syaichurrozi, Iqbal; Rusdi, Rusdi
World Chemical Engineering Journal VOLUME 4 NO. 1 JUNE 2020
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v4i1.10590

Abstract

The Generated Biogas Rate (GBRT) model and the Predicted Maximum Biogas Potential and Yield (PMBPY) model were developed in this work for better understanding of the anaerobic co-digestion of vinasse waste and tofu residue at variation of total carbon/total nitrogen (C/N) ratio which was 3.71, 5.26, 7.30, 32.54, 97.34. Rate constant (k (/day)) and biogas production rate (ū (mL/day)) estimated using GBRT model was 0.071, 0.140, 0.153, 0.150, 0.125 /day and 20.206, 101.393, 111.832, 95.967, 58.616 mL/day respectively for all variables (R2 of 0.925 – 0.976). The maximum biogas potential (Pm) obtained using PMBPY model for all variables was 335.8317, 737.0868, 760.4523, 608.3871, 523.3872 mL respectively (R2 = 0.914 – 0.972). The fitting error between measured biogas and predicted biogas through the developed model was 0.20 – 7.03 %. The developed kinetic model can predict biogas potential with prediction efficiency (%) over modified Gompertz model of 91.71 – 98.57%.
Review: Biogas Production from Rice Straw Sari, Listiyani Nurwindya; Prayitno, Hadi; Farhan, Muhamad; Syaichurrozi, Iqbal
World Chemical Engineering Journal VOLUME 6 NO. 2 DECEMBER 2022
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/wcej.v6i2.17995

Abstract

Rice straw is a rice plant whose fruit (grain) has been removed, so only the stems and leaves are left. Rice straw is the largest among rice plant waste and has not been utilized as well. Utilization of rice straw waste is not optimal because its usually used for cattle feed and as organic fertilizer. Apart from being used as cattle feed and organic fertilizer, methane gas can still be used for alternative renewable energy sources such as biogas. Rice straw has a carbon-to-nitrogen (C/N) ratio content between 50-70. However, to achieve the optimum biogas formation, the substrate requires a C/N ratio of 20-30, therefore a combination of other waste mixtures, such as cow dung or waste that has a low C/N ratio content is usually carried out.
Triple Batch Digesters in Series Method to Analyze Biogas Potential from Bioethanol Vinasse Syaichurrozi, Iqbal; Budiyono, Budiyono; Sumardiono, Siswo
World Chemical Engineering Journal VOLUME 1 NO. 1 JUNE 2015
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i1.198

Abstract

The purpose of this study was to investigate biogas production from bioethanol vinasse using the simple method which was triple batch digester in series mode. Three digesters (A, B, C) were used in laboratory scale and carried out in 30 days respectively. The fresh rumen was added in substrates before that were put into each digester (A, B, C). Ratio of COD/N in substrat was adjusted in variation of 1436/7, 400/7, 500/7, 600/7, 700/7. The results showed that in digester A, biogas was produced in large amount a first time of fermentation. In digester B, biogas generated was less than that in digester A. Meanwhile, in digester C, biogas was not produced again. Ratio of 500/7 and 600/7 generated the most biogas volume which was 9,322 and 9,168 mL. Keywords: Bioethanol, Biogas, Series Method, Triple Batch, Vinasse,
Review: Biogas Production from Cow Dung and Its Potential in Indonesia Apriantika, Anellysha Putri; Anwari, Ropi; Janah, Citra Nurul; Syaichurrozi, Iqbal
World Chemical Engineering Journal VOLUME 6 NO. 2 DECEMBER 2022
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/wcej.v6i2.17994

Abstract

Cows are ruminant livestock used as a source of food and the economy. Besides that, cows also produce waste, namely cow dung. If cow dung piles up in the open and spreads, it will carry by rainwater to lower places, which can cause soil and air pollution. To reduce cow dung waste can be used as a substrate in an anaerobic digester to produce biogas. Important factors that can affect the biogas rate include pH, temperature, Total Solid (TS) and Volatile Solid (VS) content, and the C/N ratio. The yield of biogas can be optimal with pretreatment and co-digestion. The potential for cow dung can generate electricity of 5,580 kW per day from 18 million head of cattle.
GRATIS (Gravity-Fed Biofiltering System) : Application of The Water Treatment Technology for Cibaten River in Indonesia Yudanto, Dea Yusuf; Napitasari, Mita; Suhirman, Suhirman; Syaichurrozi, Iqbal
World Chemical Engineering Journal VOLUME 1 NO. 3 DECEMBER 2016
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i3.944

Abstract

River is one of the resources for water because it is popular for human necessary,especially used in washing, bathing and cooking activity. At this era, the pollution isdesecrated by industrial and domestic waste. Hence, the quality of water on rivers hasdecreased. Cibanten river located in Banten Province-Indonesia country is one of theriver, whose water quality is decreased by pollution. The characteristics of Cibanten riveris Total Dissolved Solid (TDS) of 416 ppm, Total Suspended Solid (TSS) of 100 - 900 ppm,pH level of 6-8. Therefore, watertreatment must be done before the water is used.Biofiltering technology with gravity system was chosen, It utilized the combination ofcoconut fibrous and zeolite active (activation without chemical). This Equipment calledGRATIS (Gravity-fed Biofiltering System). Result from this treatment, TDS decreased to249 ppm (sample 2) and 185 ppm (sample 3), pH increased to 7.23 (sample 3) and 8.5(sample 2), TSS decreased to 9-115 ppm with fed water of TSS about 1048 ppm. Turbiditypoint decreased about 99.5 % (sample 2) and 99.7% (sample 3). BOD (biological OxygenDemand) decreased about 83.9% (sample 2) and 87.1% (sample 3) and COD (ChemicalOxygen Demand) decreased about 30.8% (sample 2) and 38.5% (sample 3).
Potential as biogas energy and organic fertilizer: a mixture of rice husks and cow dung on full scale anaerobic digestion Matin, Hashfi Hawali Abdul; Syafrudin, Syafrudin; Suherman, Suherman; Budiyono, Budiyono; Syaichurrozi, Iqbal
International Journal of Applied Power Engineering (IJAPE) Vol 14, No 3: September 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v14.i3.pp533-540

Abstract

Rice husk is a biomass that can potentially be converted into biogas energy. In this research, a study was carried out regarding the effect of alkaline pretreatment and then a study related to the potential for developing biogas from rice husks in Indonesia and a study related to the potential utilization of biogas by-products in the form of slurry as solid organic fertilizer. So, the main objective is to determine the effect of alkaline pretreatment of rice husks on the potential development of rice husks as raw material for biogas production on a full-scale anaerobic digestion (AD). Research related to the effect of alkaline pretreatment using 3% NaOH by immersion in the substrate for 24 hours was carried out on a lab scale. The variable TS is set at 27%, C/N ratio is 35, uses a 2-liter digester, and measurements are carried out every other day for 60 days. Furthermore, the up-scale was carried out with an AD fixed dome model with a volume of 6 m3. In this study, it was found that pre-treatment with 3% NaOH increased biogas productivity by 1.6 times higher. The potential for rice husk to be converted into biogas energy can reach 3.5 million liters of biogas by 2022. The by-product of biogas in the form of slurry also has the potential to be used as solid organic fertilizer directly. Parameter tests that have been carried out show that the slurry in biogas from rice husks that have gone through a 60-day AD fermentation process complies with the Indonesian National Standard (SNI) 7763:2018 concerning solid organic fertilizers.
Co-Authors Afdwiyarni Metta Karina Ahmad Imanuddin Anellysha Putri Apriantika Anwari, Ropi Apriantika, Anellysha Putri B Budiyono Budiyono Budiyono Dea Yusuf Yudanto, Dea Yusuf Dyah Hesti Wardhani Hadi Prayitno, Hadi I Gusti Bagus Wiksuana Janah, Citra Nurul Jayanudin Jayanudin Listiyani Nurwindya Sari M. Fakhri Basyir Matin, Hashfi Hawali Abdul Mita Napitasari, Mita Muhamad Farhan Nabilah Nabilah Netty Handayani Putri Kurnia Villta Rafi Muhammad Farraz Rusdi Rusdi Sari, Listiyani Nurwindya Sharfan Dwicahyanto Siswo Sumardiono Suherman, Suherman SUHIRMAN SUHIRMAN Sutaryo Sutaryo Syafrudin Syafrudin Topik Hidayat Wardalia Wardalia Yustinus Selis Toron