Article

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2023) Conversion of Free Fatty Acid in Calophyllum inophyllum Oil to Fatty Acid Ester as Precursor of Bio-Based Epoxy Plasticizer via SnCl2–Catalyzed Esterification. Polymers.

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Andre Dianata Hogi Kusuma, - and Yoshua Wira Putra Budiono, - and Haniif Prasetiawan, - and Pragusti Lintang Adhi Nanggala, - and I Istadi, - (2022) Biodiesel Production from Used Cooking Oil Using Integrated Double Column Reactive Distillation: Simulation Study. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 94 (1). ISSN 2289 - 7879

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Normaliza Normaliza, - and Elva Dianis Novia Anisa, - and Haniif Prasetiawan, - and Dhoni Hartanto, - and Harumi Veny, - and Fazlena Hamzah, - and Miradatul Najwa Muhd Rodhi, - (2022) Synthesis of Biodiesel via Interesterification Reaction of Calophyllum inophyllum Seed Oil and Ethyl Acetate over Lipase Catalyst: Experimental and Surface Response Methodology Analysis. energies, 15. pp. 1-15.

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Haniif Prasetiawan, - and Radenrara Dewi Artanti Putri, - and Bayu Triwibowo, - (2021) Optimisation of Free Fatty Acid Removal in Nyamplung Seed Oil (Callophyllum inophyllum L.) using Response Surface Methodology Analysis. Pertanika Journal of Science and Technology, 29 (4). pp. 2605-2623. ISSN 0128-7680

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2021) Steady-State and Dynamic Simulation Study of Reactive Distillation for FFA Esterification in Biodiesel Synthesis. Jurnal Rekayasa Kimia dan Lingkungan, 16 (1). pp. 28-36. ISSN 1412-5064

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Haniif Prasetiawan, - and Radenrara Dewi Artanti Putri, - and Bayu Triwibawo, - (2021) Optimisation of Free Fatty Acid Removal in Nyamplung Seed Oil (Callophyllum inophyllum L.) using Response Surface Methodology Analysis. Pertanika Journal of Science and Technology, 29 (4). ISSN 0128-7680

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Haniif Prasetiawan, - and Daniel Setiyo Nugroho, - and Ajeng Riswanti Wulandari, - (2021) Steady-State and Dynamic Simulation Study of Reactive Distillation for FFA Esterification in Biodiesel Synthesis. Jurnal Rekayasa Kimia dan Lingkungan, 16 (1). ISSN 1412-5064

Nur Qudus, - and Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Zakky Syamrizal, - and Dhoni Hartanto, - and Zainul Akmar Zakaria, - (2021) Vinasse-Based Slow-Release Organo-Mineral Fertilizer with Chitosan-Bentonite Matrix. Jurnal Bahan Alam Terbarukan, 10 (1). pp. 1-8. ISSN 2303- 0623

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2020) Alteration of Biodiesel Properties and Automotive Diesel Engine Performance due to Temperature Variation of the Transesterification Process. Jurnal Rekayasa Kimia dan Lingkungan, 15 (2). pp. 90-98. ISSN 1412-5064

Dwi Widjanarko, - and Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Ahmad Afwan Fathoni, - (2020) Alteration of Biodiesel Properties and Automotive Diesel Engine Performance due to Temperature Variation of the Transesterification Process. Jurnal Rekayasa Kimia dan Lingkungan, 15 (2). ISSN 1412-5064

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Ahmad Faiz Armiano Syah, - (2020) Conversion of Durian Shell Agroindustrial Waste into Various Valuable Products to Support the Food Security During the Covid-19 New Normal Era: Review. Jurnal Teknologi Hasil Pertanian, 13 (2). pp. 124-129. ISSN 2614-7920

Dwi Nuryana, - and Muhammad Fahrul Rahman Alim, - and Maizatulakmal Yahayu, - and Muhammad Abbas Ahmad Zaini, - and Raja Safazliana Raja Sulong, - and Muhammad Fakhrul S)mkri Abd Aziz, - and Haniif Prasetiawan, - and Zainul Akmar Zakaria, - and Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2020) Methylene Blue Removal Using Coconut Shell Biochar Synthesized through Microwave-Assisted Pyrolysis. Jurnal Teknologi (Sciences and Engineering), 82 (5). ISSN 2180-3722

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2019) Synthesis of ZnO/CaO Catalyst from Eggshell Waste for Biodiesel Production. Jurnal Bahan Alam Terbarukan, 8 (1). pp. 65-71. ISSN 2303-0623

Achmad Chafidz, - and Cholila Tamzysi, - and Lilis Kistriyani, - and Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Dhoni Hartanto, - (2019) Mechanical Properties of PP/clay Nanocomposites Prepared from Masterbatch: Effect of Nanoclay Loadings and Re-Processing. Key Engineering Materials, 805. pp. 59-64. ISSN 1013-9826

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Muhammad Hafizt Akbar, - and Dwi Widjanarko, - (2019) Reduction of FFA in Kapok Randu (Ceiba pentandra) Seed Oil via Esterification Reaction Using Sulfuric Acid Catalyst: Experimental and Kinetics Study. Jurnal Bahan Alam Terbarukan, 8 (2). pp. 156-166. ISSN 2303- 0623

Dino Wicaksono, - and Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2019) Synthesis of ZnO/CaO Catalyst from Eggshell Waste for Biodiesel Production. Jurnal Bahan Alam Terbarukan, 8 (1). pp. 65-71. ISSN 2303- 0623

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Haniif Prasetiawan, - and Brylian Rizky Pratama, - and Dani Prasetya, - and Anwaruddin Hisyam, - (2018) Esterification of Non-edible Oil Mixture in Reactive Distillation Column over Solid Acid Catalyst: Experimental and Simulation Study. Journal of Physical Science, 29 (2). ISSN 1675-3402

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Raden Rara D. A Putri, - and Nurul Badriah, - and Febriana E. N Faizah, - (2018) Preparation and Characterization of Edible Film from Sorghum Starch with Glycerol and Sorbitol As Plasticizers. Journal of Engineering Science and Technology, 13. ISSN 823-4690

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2017) Effects of Solid Vinasse-Based Organic Mineral Fertilizer on Some Growth Indices of Tomato Plant. Jurnal Bahan Alam Terbarukan, 6 (2). pp. 190-197. ISSN 2303-0623

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Oktafiani, - and Dhoni Hartanto, - and Prima Astuti Handayani, - (2017) Effects of Solid Vinasse-Based Organic Fertilizer on Some Growth Indices of Tomato Plant. Jurnal Bahan Alam Terbarukan, 6 (2). pp. 190-197. ISSN 2303- 0623

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2016) A New Route of Biodiesel Production through Chemical Interesterification of Jatropha Oil using Ethyl Acetate. International Journal of ChemTech Research, 9 (6). pp. 627-634. ISSN 0974-4290

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Imam Novrizal Aji, - and H. Hadiyanto, - and Arief Budiman, - (2016) Application of Tin(II) Chloride Catalyst for High FFA Jatropha Oil Esterification in Continuous Reactive Distillation Column. Bulletin of Chemical Reaction Engineering & Catalysis, 11 (1). ISSN 1978-2993

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Riris Pristiyani, - and Heny Dewajani, - (2016) A New Route of Biodiesel Production through Chemical Interesterification of Jatropha Oil using Ethyl Acetate. International Journal of ChemTech Research, 9 (6). ISSN 0974-4290

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Oktafiani, - and Dhoni Hartanto, - and Prima Astuti Handayani, - and Dimas Rahadian Aji Muhammad, - (2015) Pembuatan Pupuk Organo-Mineral Fertilizer (OMF) Padat dari Limbah Industri Bioetanol (Vinasse). Jurnal Bahan Alam Terbarukan, 4 (2). ISSN 2303- 0623

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Suryo Purwono, - and Rochmadi, - and Arief Budiman, - (2014) Graphical exergy analysis of reactive distillation column for biodiesel production. International Journal of Exergy, 15 (4). ISSN 1742-8297

Mauro Banchero, - and Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Giuseppe Gozz, - (2014) Reactive distillation in the intensification of oleic acid esterification with methanol–A simulation case-study. Journal of Industrial and Engineering Chemistry, 20 (6). ISSN 1226-086X

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Prima Astuti Handayani, - and Rochmadi, - and Suryo Purwono, - and Arief Budiman, - (2014) Tin (II) Chloride Catalyzed Esterification of High FFA Jatropha Oil: Experimental and Kinetics Study. Int. Journal of Renewable Energy Development (IJRED), 3 (2). pp. 75-81. ISSN 2252-4940

Book Section

Nurahmad Rifai, - and Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2022) Ekstraksi Asam Lemak Omega-3 dari Daun Krokot (Portulaca Oleracea L.) dengan Pelarut Alkohol Food Grade dan Enkapsulasi Menggunakan Metode Plate-Drying. In: Book Chapter Kimia Jilid 1. LPPM Universitas Negeri Semarang, Semarang.

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Indah Purnamasari, - and Ririn Mahmudati, - and Haniif Prasetiawan, - (2022) Interesterification Reaction of Vegetable Oil and Alkyl Acetate as Alternative Route for Glycerol-Free Biodiesel Synthesis. In: BIOFUELS AND BIOENERGY A Techno-Economic Approach. Elsevier, India. ISBN 978-0-323-90040-9

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Dhoni Hartanto, - and Hasan Abdul Rohman, - and Mitamaytawati, - and Nur Qudus, - and Daniyanto, - (2020) Valorization of Sugarcane-Based Bioethanol Industry Waste (Vinasse) to Organic Fertilizer. In: Valorisation of Agro-industrial Residues – Volume II: Non-Biological Approaches. Applied Environmental Science and Engineering for a Sustainable Future, II . Springer, pp. 203-223. ISBN 978-3-030-39207-9

Conference or Workshop Item

D Widjanarko, - and Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and I P Jamari, - (2020) Effect of Ceiba pentandra Biodiesel/ Dexlite Diesel Blends on the Four-Stroke Diesel Engine Performances. In: The 6th International Conference on Industrial Mechanical, Electrical and Chemical Engineering - ICIMECE 2020, 20 Oktober 2020, UNS Surakarta.

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Haifah, - and D Widjanarko, - and H Prasetiawan, - (2020) Experimental and Kinetic Study of Free Fatty Acid Esterification Derived from Ceiba pentandra Seed Oil with Ethanol. In: The 7th International Conference on Mathematics, Science, and Education 2020 (ICMSE 2020], 6 Oktober 2020, Unnes Semarang.

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2020) Phenolic Compound Derived from Microwave-Assisted Pyrolysis of Coconut Shell: Isolation and Antibacterial Activity Testing. In: ICENIS 2020, 12-13 Agustus 2020, Undip Semarang.

D Widjanarko, - and M Khumaedi, - and Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2019) Continuous and Integrated Model of Learning Media and Evaluation for Vocational Education Application: A Case in Automotive Biodiesel Learning Material. In: The 5th International Conference on Technology and Vocational Teachers (ICTVT 2019), 14 - 15 September 2019, UNY.

Muhammad Syarif Abdullah, - and Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2019) The Extraction of Purslane (Portulaca oleracea L.) Using Alcohol Solvents 48 % and Its Utilization as a Source of Encapsulated Omega-3 Oil. In: The 2nd International Conference on Chemical Process and Product Engineering (ICCPPE) 2019, 25-26 September 2019, Undip Semarang.

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Muhammad Yasir Adhi Utomo, - and Pipit Risky Nurjanah, - and Dwi Widjanarko, - (2019) Synthesis of Biodiesel from Kapok (Ceiba Pentandra L.) Seed Oil through Ultrasound-Enhanced Transesterification Reaction. In: The 5th International Conference on Industrial, Mechanical, Electrical, and Chemical Engineering 2019 (ICIMECE 2019), 17-18 September 2019, UNS Surakarta.

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and B Triwibowo, - and R A Ramadhani, - and DH S Riyadi, - and I Istadi, - (2018) Simplex Lattice Design Method for the Optimization of Non-Edible Oils Mixture Composition as Feedstock for Biodiesel Synthesis Using Reactive Distillation. In: The 3rd International Conference of Chemical and Materials Engineering, 19-20 September 2018, Undip Semarang.

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2017) Conversion of Ligno-cellulosic Biomass Waste into Cellulose Nano-Fibril (CNF) Biodegradable Film for Bioactive Food Packaging. In: Seminar NasionalTeknikKimia''Kejuangan" 2017 Universitas Pembangunan Nasional Veteran, 13 April 2017, UNJ.

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2016) Integrating Renewable Energy Education in Junior and Senior High Schools Curriculum in Indonesia. In: Prosiding Konvensi Nasional Pendidikan Indonesia [KONASPI] VIII Tahun 2016, 12-15 Oktober 2016, UNJ.

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2016) Kinetics study of Jatropha oil esterification with ethanol in the presence of tin (II) chloride catalyst for biodiesel production. In: Internasional Conference on Engineering, Science and Nanotechnology (ICESNANO), 3-5 Agustus 2016, UTHM Malaysia.

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia and Mohamad Setiaji Erfana, - and Dhoni Hartanto, - (2015) Pembuatan Pupuk Organik Cair (POC) dari Limbah Industri Bioetanol (Vinasse) Melalui Proses Fermentasi Berbantuan Promoting Microbes. In: Prosiding Seminar Nasional Kimia dan Pendidikan Kimia (SNKPK) 2015, 10 Oktober 2015, Unnes Semarang.

Book

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2022) Book Chapter Kimia Jilid 1. Penerbit LPPM Universitas Negeri Semarang, Semarang.

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia (2012) BIOFUELS AND BIOENERGY A Techno-Economic Approach. Charlotte Cockle.

Ratna Dewi Kusumaningtyas,, FT Teknik Kimia Applied Environmental Science and Engineering for a Sustainable Future. Springer Nature Switzerland AG.. ISBN 978-3-030-39207-9

Patent

EC00202216920, 11 Maret 2022 (2022) Karya Rekaman Video Bahan Baku Biodiesel Seri 2: Nonedible Vegetable Oil (NEVO). 000332285.

IDS000004599 (2022) Alat Produksi Biodiesel dengan Reaktor Transesterifikasi Ganda. IDS000004599.

EC00202216920 (2022) Bahan Baku Biodiesel Seri 2: Nonedible Vegetable Oil (NEVO). 000332285.

500202100468 (2021) Alat Pengolah Biodiesel Multi Kapasitas. 1DS000004552.

S00202106437 (2021) Alat Produksi Biodiesel dengan Reaktor Transesterifikasi Ganda. IDS000004599.

EC00202043631, 23 Oktober 2020 (2020) Program Komputer Media Proses Produksi Biodiesel. 000211867.

S00202001156 (2020) Alat Pirolisis Berbantu Gelombang Mikro untuk Pembuatan Arang Hayati. IDS000004358.

EC00202043631 (2020) Media Proses Produksi Biodiesel. 000211867.

SID201904133 (2020) Telur Asin yang Diperkaya dengan Omega-3 dari Tanaman Krokot. IDS000003300.

S00201910435 (2019) Metode Pembuatan Bahan Bakar Pelet Biomassa dari Limbah Eceng Gondok. IDS000004494.

P00201507855 (2015) Peralatan yang Digunakan untuk dan Proses Produksi Biodiesel dengan Reactive Distillation. IDP000050708.