Chemical Engineering, Renewable Energy, Sustainability and the Environment, Environmental Science, Ecology
12
Scopus Publications
452
Scholar Citations
11
Scholar h-index
15
Scholar i10-index
Scopus Publications
One-step phase transferring method on preparing CuInS2/ZnS QDs dispersion via ultrasonic treatment for bioimaging Adi Permadi, Lukhi Mulia Shitophyta, Ibdal Satar International Journal of Advances in Applied Sciences, 2024 Sonochemistry has many applications in biomedical engineering owing to its ability to break chemical bonds. It can also be used to facilitate the preparation of aqueous quantum dots (QDs) dispersions during microemulsion formati on. Cavitation, bubble growth and collapse during sonication facilitate the formation of microemulsions between a solvent and water. Sonication was employed in this study to prepare aqueous copper indium sulfide colloidal zinc sulfide (CuInS2/ZnS) QD dispersions using different solvent systems. The resultant QDs were characterized by UV-vis absorption, photoluminescence, and dynamic light scattering. Hexane was determined to be the best solvent for the preparation of QD dispersions with the resultant QDs (30 nm in diameter) retaining their chemical integrity and >30% of their quantum yield. CuInS2/ZnS QD dispersions in water can be directly prepared without any non-polar solvent and it has shown high quantum yield. Further, it was also shown that less-toxic, which is efficient in labeling tumor cells derived from human liver cancer (HepG2). It’s evident that, sonication was found to be an efficient alternative approach for preparing aqueous QD dispersions without the need for surface modification, or the use of non-polar solvents during microemulsion formation.
Anaerobic digestion of corn stover pretreated with sulfuric acid in different soaking durations Lukhi Mulia Shitophyta¹, Hilda Dyah, Ana Wulansari, Azim Khan Global Nest Journal, 2024 <p>The biogas production of pretreated corn stover has been determined in different soaking durations. Batch anaerobic digestion applies three different soaking durations in sulfuric acid pretreatment under room temperature. The study aimed to probe the effect of soaking durations during sulfuric acid pretreatment. The experiment was conducted in 600 mL digesters at room temperature. Biogas volume was measured using the water displacement method every three days. The observed cumulative biogas yields varied between 48.74 mL/g VS and 99.95 mL/g VS. The highest biogas yield was obtained when corn stover was soaked in sulfuric acid for 6 hours. The 24 h-pretreated corn stover got the lowest biogas yield. The statistical result proved a significant effect of soaking durations on biogas production (p &lt; 0.05). The logistic model provided a better fit than the first-order model, with R2 values ranging from 0.9923 to 0.9987 and divergence between experimental and predicted values varying between 0.12% and 1.48%.</p>
Drying kinetics of modification cassava-seaweed noodles using an oven Gita Indah Budiarti, Endah Sulistiawati, Titisari Juwitaningtyas, Lukhi Mulia Shitophyta, Irene Enjeli Purba, Seila Setiyani International Journal of Advances in Applied Sciences, 2023 Consumption of noodles in the world is always increasing. Noodles made from wheat flour are unhealthy because they cause diabetes, so alternative noodles are needed, such as modified cassava flour and seaweed. Modification cassava is used because it does not contain gluten and seaweed has nutritional value to make healthy, low-calorie noodles. The purpose of this study was to determine the temperature and time of the drying parameters of seaweed noodles. The drying method uses an oven with variable temperature (60, 70, 80, and 90 ) and drying time (2, 4, 6, 8, and 10 hours). The results of the study obtained optimal water content at 60 with 6 hours of 11.75%. The drying kinetics evaluated by logarithmic equation, optimal drying constant value at 80 of 0.67 h<sup>-1</sup> with R2 0.9391. Effective moisture diffusivity (D<sub>eff</sub>) maximum evaluated by second Fick law obtained 9.35×10<sup>7</sup> m<sup>2</sup>/sec at temperature 90 with R2=0.9227. The proximate value of ash content is 12.11%, protein is 9.46%, lipid is 0.10%, and carbohydrates is 65.08%.
Reaction of Carbon Dioxide Gas Absorption with Suspension of Calcium Hydroxide in Slurry Reactor Zahrul Mufrodi, L. M. Shitophyta, Hary Sulistyo, . Rochmadi, Muhammad Aziz Emerging Science Journal, 2023 Chemical phenomena involving three phases (solid, liquid, and gas) are often found in the industry. Carbonate (CaCO3) is widely used in industries as a powder-making material in the cosmetic industry, a pigment in the paint industry, and filler in the paper and rubber industry. This research aim to study the ordering process carbonate deposits (CaCO3) from the absorption process of CO2 gas with Ca(OH)2 suspension. The absorption reaction of CO2 gas with Ca(OH)2 suspension was carried out in a stirred slurry tank reactor. Initially, the reactor containing water was heated to a certain temperature, then Ca(OH)2 was added to the reactor. Furthermore, CO2 gas with a certain flow rate and temperature (according to the reactor temperature) is flown with the help of a gas distributor. Samples were taken every 1 min until the concentration of Ca(OH)2 could not be detected (completely reacted). The variables in this study were: stirrer rotation speed (5.66711.067 rps), CO2 gas flow rate (34.0127–60.5503 c/s), and temperature (30–50°C). The mass transfer coefficient and the reaction rate coefficient were determined by minimizing Sum of Squares of Errors (SSE). This experimental process follows a dynamic regime. A dimensionless number relationship for the gas-liquid mass transfer for the value range is Re1 = 18928.76-38217.20, Sh = 0.07928 Reg0.4383 Rel0.4399 Sc0.6415 with an error of 5.19%. The dimensionless number relationship for solid-liquid mass transfer is Sh = 0.0001179 Reg0.4674 Rel0.5403 Sc1.444 with an error of 7.31%. The relationship between the reaction rate constant and the temperature in the 30-50 °C range can be approximated by the Arrhenius equation, namely kr = 1771000 e-2321.4/T cm3/mgmol/s with an error of 3.63%. Doi: 10.28991/ESJ-2023-07-02-02 Full Text: PDF
Upgrading of biogas yield from the liquid waste of tofu by variation types of co-digestions Lukhi Mulia Shitophyta, Adi Permadi, Syaeful Akbar Padya Aip Conference Proceedings, 2023 Accumulation of liquid waste of tofu can lead to environmental pollution due to the difficulty decomposition by microorganisms. Converting liquid waste of tofu into biogas is the right choice to overcome environmental problems and reduce the usage of fossil fuels. Biogas is produced through the anaerobic digestion (AD) process by microorganisms. The addition of co-digestion can improve the efficiency of microorganisms. Therefore, this study aims to compare biogas yields from various types of co-digestion (tomato wastes, food wastes, and cow rumen), determine the optimal concentration of co-digestion (10%, 20%, and 30%), and measure the content of volatile solids (VS) before and after the anaerobic digestion process. The methods were the preparation of feedstock, the production of biogas, and analysis of initial and final VS. The results showed that co-digestion of cow rumen produced the highest biogas yield of 376.24 mL/g VS. Cow rumen of 20% is an optimum co-digestion for biogas production from the liquid waste of tofu. VS reduction is directly proportional to biogas yield.
Evaluation and modelling of biogas production from batch anaerobic digestion of corn stover with oxalic acid Shitophyta Lukhi Mulia, Arnita Arnita, Wulansari Hilda Dyah Ana Research in Agricultural Engineering, 2023 Corn stover is one of the potential lignocellulosic biomasses as the raw material of biogas production. Pretreatment of lignocellulose substrates can enhance biodegradability and biogas yield. This study investigates the effect of oxalic acid pretreatment on biogas production during batch anaerobic digestion of corn stover. First-order, logistic, modified Gompertz and transference models predicted kinetic parameters during biogas production from pretreated corn stover. Results showed that oxalic acid pretreatment significantly affected biogas production (P < 0.05). The highest cumulative biogas yields of pretreated and untreated corn stover were 95.14 mL/gVS and 57.55 mL/gVS, respectively. Pretreated substrates improved biodegradability by 165%. Four kinetic models provided the determination coefficients R2 higher than 0.9. The logistic model and modified Gompertz provided the best deviation of 1.57 and 3.75%, respectively. The logistic model proved the best fitting in predicting cumulative yields and simulating the kinetic model of anaerobic digestion of pretreated corn stover among the three models.Â
Theoretical Biochemical Methane Potential Generated by the Anaerobic Digestion of Mustard Green Residues in Different Dilution Volumes Lukhi Mulia Shitophyta, Septia Riskillah Putri, Zienmy Ayu Salsabiella, Gita Indah Budiarti, Fatima Rauf, Azim Khan Polish Journal of Environmental Studies, 2023 The green mustard residues can be converted into biogas through anaerobic digestion. In this study, different dilution volumes (1 L, 1.5 L, 2 L) were observed to determine the effect of dilution volumes on biogas yield. Three kinetic models (first-order, Fitzhugh, modified Gompertz model) were used to simulate the methane potential, kinetic constants, and lag phase time. The experiment was carried out in 5 L digesters at room temperature. The results showed that modified Gompertz is the best model for simulating the AD process. Dilution volume affected biogas production (p<0.05) with the highest biogas yield of 4372.58 mL/gVS (dilution volume of 2 L). The statistical analysis showed a significant correlation between the COD total, different dilution volumes and theoretical methane potential (p<0.05).
The Impact of Alkali Pretreatment and Organic Solvent Pretreatment on Biogas Production from Anaerobic Digestion of Food Waste Lukhi Shitophyta, Syaeful Padya, Ahmad Zufar, Novia Rahmawati Journal of Ecological Engineering, 2022 Anaerobic digestion of food waste is an encouraging technology for biogas production. Pretreatment of the substrate is needed to increase biodegradation. This study aimed to investigate the effect of alkali pretreatment and organic solvent pretreatment on biogas production. Physical pretreatment was also applied in this study. NaOH (0%, 2%, 4% and 6%) was used as alkali pretreatment. Ethanol (0, 2, 4 and 6%) was used as organic solvent pretreatment. The experiment was conducted in a 1 L batch digester under room temperature. Results showed that 0% NaOH generated the highest cumulative biogas yield of 46.1 mL/gVS. The best biodegradability of 37.5% was achieved in NaOH of 0%. The lower concentration of ethanol generated a higher biogas yield. The greatest cumulative yield of 41.5 mL/gVS was obtained at an ethanol concentration of 0% with a biodegradability of 33.84%. Statistical analysis proved that alkali pretreatment and organic solvent pretreatment had no significant effect on biogas production (p>0.05). Physical pretreatment had a significant effect (p<0.05) with the highest cumulative yield of 58.2 mL/gVS. The kinetic model proved that the modified Gompertz was a suitable model for predicting and simulating the kinetics of anaerobic digestion from food waste (R 2 > 0.9).
The effect of effective microorganisms-4 (em-4) on biogas yield in solid-state anaerobic digestion of corn stover L M Shitophyta, G I Budiarti, Y E Nugroho, M Hanafi Iop Conference Series Materials Science and Engineering, 2020 Biogas production from various organic wastes such as corn stover can be used as an alternative fuel. Corn stover is one of the agricultural wastes that are widely generated in Indonesia. It contains cellulose which has the potential to be used as raw material for producing biogas. The biogas production process was carried out in solid-state anaerobic digestion (SS-AD), i.e., a biological process that occurs naturally by a microorganism that breaks down molecules of organic material with a total solid content greater than 15%. This research was aimed to investigate the effect of EM-4 concentration on biogas yield. The volatile solids (VS) reduction was also measured in this study. The results of the study showed that EM-4 concentration had a significant effect on biogas yield (p < 0.05). The positive linear relationship was found between EM-4 concentration and biogas yield. The highest biogas yield of 597.98 L/kg VS was obtained at EM-4 15%. The main source of biogas production during SS-AD of corn stover was the reduction of VS.
Comparison of kinetic model for biogas production from corn cob L M Shitophyta, Maryudi Iop Conference Series Materials Science and Engineering, 2018 Energy demand increases every day, while the energy source especially fossil energy depletes increasingly. One of the solutions to overcome the energy depletion is to provide renewable energies such as biogas. Biogas can be generated by corn cob and food waste. In this study, biogas production was carried out by solid-state anaerobic digestion. The steps of biogas production were the preparation of feedstock, the solid-state anaerobic digestion, and the measurement of biogas volume. This study was conducted on TS content of 20%, 22%, and 24%. The aim of this research was to compare kinetic models of biogas production from corn cob and food waste as a co-digestion using the linear, exponential equation, and first-kinetic models. The result showed that the exponential equation had a better correlation than the linear equation on the ascending graph of biogas production. On the contrary, the linear equation had a better correlation than the exponential equation on the descending graph of biogas production. The correlation values on the first-kinetic model had the smallest value compared to the linear and exponential models.
Market Response to Green Investment Alternative in Indonesia: Readiness for Global Sustainability Standards RN Ainy, LM Shitophyta, S Noviani, N Helena, D Nurleva MAKSIMUM: Media Akuntansi Universitas Muhammadiyah Semarang 15 (2) , 2025 2025
Utilization of Snails as Liquid Organic Fertilizer (POC) with the Anaerobic Composter Tube Method SP Lestari, DRN Afifah, LM Shitophyta, A Rahayu Indonesian Journal of Chemical Engineering 3 (1), 32-37 , 2025 2025
Formulasi dan uji sensori otak-otak cumi dengan variasi penambahan tepung Eucheuma spinosum dan tepung tapioka MS Triyastuti, HMP Ondang, LM Shitophyta, GI Budiarti, LK Dewi Jurnal Gastronomi Indonesia 12 (2), 9-18 , 2024 2024 Citations: 3
One-step phase transferring method on preparing CuInS2/ZnS QDs dispersion via ultrasonic treatment for bioimaging A Permadi, LM Shitophyta, I Satar Int J Adv Appl Sci 13 (1), 73-83 , 2024 2024 Citations: 20
Perhitungan kadar air, rendemen dan uji organoleptik pada ikan asin A Nurfitriyani, MS Triyastuti, LM Shitophyta, BR Wahidi, I Mukhaimin Media Teknologi Hasil Perikanan 12 (1), 45-55 , 2024 2024 Citations: 29
Anaerobic digestion of corn stover pretreated with sulfuric acid in different soaking durations LM Shitophyta, Arnita, HDA Wulansari, A Khan GLOBAL NEST JOURNAL 26 (1) , 2024 2024
Drying kinetics of modification cassava-seaweed noodles using an oven GI Budiarti, E Sulistiawati, T Juwitaningtyas, LM Shitophyta, IE Purba, ... Int J Adv Appl Sci 12 (4), 309-316 , 2023 2023
Pengaruh Penyimpanan Pada Uji Organoleptik Cireng Mercon The Effect of Storage on Cireng Mercon Organoleptic Test MS Triyastuti, DH Ndahawali, A Nurfitriyani, L Mulia Jurnal Airaha 12 (02) , 2023 2023 Citations: 1
Kinetic analysis of anaerobic digestion of rice husk for prediction of methane yield: analisis kinetika pencernaan anaerobik sekam padi untuk prediksi hasil metana LM Shitophyta, NA Nurillah, E Agustina, S Purwanti, MS Triyastuti Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan 7 (2), 33-38 , 2023 2023 Citations: 1
Effect of Pineapple Peel Extracts on Organic Fertilizer Nutrients and Growth of Cayenne Pepper (Capsicum Annuum) LM Shitophyta, RD Larasati, MNB Pertiwi, MS Triyastuti G-Tech: Jurnal Teknologi Terapan 7 (4), 1401-1406 , 2023 2023 Citations: 1
Theoretical Biochemical Methane Potential Generated by the Anaerobic Digestion of Mustard Green Residues in Different Dilution Volumes LM Shitophyta, SR Putri, ZA Salsabiella, GI Budiarti, F Rauf, A Khan Polish Journal of Environmental Studies 32 (5), Shitophyta LM, Putri SR … , 2023 2023 Citations: 11
Production of bioethanol from Kepok banana peels (Musa acuminata x Musa balbisiana) using different types of yeast LM Shitophyta, RS Zhirmayanti, HA Khoirunnisa, S Amelia, F Rauf G-Tech: Jurnal Teknologi Terapan 7 (3), 897-903 , 2023 2023 Citations: 5
Edukasi dan pelatihan konversi sampah organik menjadi pupuk kompos bagi siswa SD Muhammadiyah Pandes, Yogyakarta LM Shitophyta, S Jamilatun, S Amelia, DDC Wijaya, DN Yunita Jurnal Abdi Masyarakat Indonesia 3 (4), 1101-1104 , 2023 2023 Citations: 13
Upgrading of biogas yield from the liquid waste of tofu by variation types of co-digestions LM Shitophyta, A Permadi, SA Padya AIP Conference Proceedings 2772 (1), 060010 , 2023 2023
Reaction of carbon dioxide gas absorption with suspension of calcium hydroxide in slurry reactor Z Mufrodi, LM Shitophyta, H Sulistyo, M Aziz Emerging Science Journal 7 (2), 328-338 , 2023 2023 Citations: 38
Evaluation and modelling of biogas production from batch anaerobic digestion of corn stover with oxalic acid. Res LM Shitophyta, A Arnita, HDA Wulansari Agric. Eng 69, 151-157 , 2023 2023 Citations: 14
The Impact of Alkali Pretreatment and Organic Solvent Pretreatment on Biogas Production from Anaerobic Digestion of Food Waste LM Shitophyta, SA Padya, AF Zufar, N Rahmawati Journal of Ecological Engineering 23 (12), 179-188 , 2022 2022 Citations: 8
Pelatihan Teknologi Pengelolaan dan Pengolahan Sampah Menuju Sekolah Ramah Lingkungan Untuk Guru dan Siswa/i SD Muhammadiyah Pandes, Bantul S Amelia, S Jamilatun, LM Shitopyhta, M Utami, I Sriyana Prosiding Seminar Nasional Hasil Pengabdian Kepada Masyarakat Universitas … , 2022 2022
Pemanfaatan limbah cangkang telur ayam dan telur puyuh sebagai pupuk organik untuk tanaman sawi LM Shitophyta, T Aulia, YR Aditya JURNAL AGITASI 2 (1) , 2022 2022
Effects of Nutrients Ca and K on Anaerobic Digestion of Food Waste FMA Chusna, LM Sitophyta, RT Evitasari CHEM. J. Tek. Kim. 9, 54-59 , 2022 2022 Citations: 3
MOST CITED SCHOLAR PUBLICATIONS
Pelatihan pembuatan pupuk kompos dari sampah organik di Ranting Muhammadiyah Tirtonirmolo, Kasihan, Yogyakarta SA Lukhi Mulia Shitophyta, S Jamilatun Community Development Journal 2 (1), 136-140 , 2021 2021 Citations: 106
Reaction of carbon dioxide gas absorption with suspension of calcium hydroxide in slurry reactor Z Mufrodi, LM Shitophyta, H Sulistyo, M Aziz Emerging Science Journal 7 (2), 328-338 , 2023 2023 Citations: 38
Perhitungan kadar air, rendemen dan uji organoleptik pada ikan asin A Nurfitriyani, MS Triyastuti, LM Shitophyta, BR Wahidi, I Mukhaimin Media Teknologi Hasil Perikanan 12 (1), 45-55 , 2024 2024 Citations: 29
Pembuatan pupuk organik cair dari urine kambing Jawa Randu dan sampah organik rumah tangga AY Fahlevi, ZT Purnomo, LM Shitophyta Rekayasa 14 (1), 84-92 , 2021 2021 Citations: 24
Perbandingan Pretreatment Kimia dan Biologi pada limbah makanan untuk Produksi Biogas LM Shitophyta, A Pernadi, N Rahmawati, NS Sembiring ITERA 6 (2), 297-301 , 2021 2021 Citations: 21
One-step phase transferring method on preparing CuInS2/ZnS QDs dispersion via ultrasonic treatment for bioimaging A Permadi, LM Shitophyta, I Satar Int J Adv Appl Sci 13 (1), 73-83 , 2024 2024 Citations: 20
Produksi Biogas dari Kotoran Sapi dengan Biodigester Kontinyu dan Batch LM Shitophyta, MH Darmawan, Y Rusfidiantoni Journal of Chemical Process Engineering 7 (2), 85-90 , 2022 2022 Citations: 18
Biogas production from corn stover by solid-state anaerobic co-digestion of food waste LM Shitophyta, GI Budiarti, YE Nugroho, D Fajariyanto Jurnal Teknik Kimia Dan Lingkungan 4 (1), 44-52 , 2020 2020 Citations: 17
Evaluation and modelling of biogas production from batch anaerobic digestion of corn stover with oxalic acid. Res LM Shitophyta, A Arnita, HDA Wulansari Agric. Eng 69, 151-157 , 2023 2023 Citations: 14
Edukasi dan pelatihan konversi sampah organik menjadi pupuk kompos bagi siswa SD Muhammadiyah Pandes, Yogyakarta LM Shitophyta, S Jamilatun, S Amelia, DDC Wijaya, DN Yunita Jurnal Abdi Masyarakat Indonesia 3 (4), 1101-1104 , 2023 2023 Citations: 13
Biogas production from rice straw by solid-state anaerobic digestion LM Shitophyta, Budiyono, AM Fuadi AIP Conference Proceedings 1699 (1), 030025 , 2015 2015 Citations: 13
Theoretical Biochemical Methane Potential Generated by the Anaerobic Digestion of Mustard Green Residues in Different Dilution Volumes LM Shitophyta, SR Putri, ZA Salsabiella, GI Budiarti, F Rauf, A Khan Polish Journal of Environmental Studies 32 (5), Shitophyta LM, Putri SR … , 2023 2023 Citations: 11
Pelatihan pembuatan sabun cuci cair secara daring di masa pandemi Covid-19 LM Shitophyta, S Amelia, S Jamilatun Jurnal Pengabdian Masyarakat Indonesia 2 (1), 33-36 , 2022 2022 Citations: 11
Solid-state anaerobic digestion of rice straw for biogas production: A review LM Shitophyta CHEMICA: Jurnal Teknik Kimia 3 (1), 17-23 , 2016 2016 Citations: 11
Pemanfaatan minyak jelantah untuk pembuatan lilin sebagai alternatif mengatasi limbah domestik dan meningkatkan nilai tambah S Jamilatun, LM Sitophyta, S Amelia Prosiding Seminar Nasional Hasil Pengabdian Kepada Masyarakat Universitas … , 2020 2020 Citations: 10
The Impact of Alkali Pretreatment and Organic Solvent Pretreatment on Biogas Production from Anaerobic Digestion of Food Waste LM Shitophyta, SA Padya, AF Zufar, N Rahmawati Journal of Ecological Engineering 23 (12), 179-188 , 2022 2022 Citations: 8
Comparison of kinetic model for biogas production from corn cob LM Shitophyta, Maryudi IOP conference series: Materials Science and Engineering 345 (1), 012004 , 2018 2018 Citations: 7
Pemanfaatan Ubi Jalar (Ipomoea Babatas, L.) Menjadi Sirup Glukosa Dengan Hidrolisis Asam LM Shitophyta, DSB Ardiansyah, MR Nendanov Jurnal Penelitian Sains 22 (1), 45-49 , 2020 2020 Citations: 6
The effect of effective microorganisms-4 (em-4) on biogas yield in solid-state anaerobic digestion of corn stover LM Shitophyta, GI Budiarti, YE Nugroho, M Hanafi IOP Conference Series: Materials Science and Engineering 830 (2), 022024 , 2020 2020 Citations: 6
Pemanfaatan Limbah Cair Tahu menjadi Biogas di Industri Tahu Murni Pak Min Jomblangan, Banguntapan, Yogyakarta LM Shitophyta, S Purwanti, M Maryudi Jurnal Pengabdian Pada Masyarakat 4 (4), 541-546 , 2019 2019 Citations: 6
