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All Journal Dedikasi: Jurnal Pengabdian kepada Masyarakat Journal of Biobased Chemicals (JOBC) Journal of Energy, Materials, & Manufacturing Technology
Atiqa Rahmawati
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Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Mechanical Engineering Social Sciences Other

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Pemberdayaan UKM Batik Kabupaten Jember dalam Pengelolaan Limbah Cair dengan Metode Green Technolgy Bekti Palupi; Istiqomah Rahmawati; Atiqa Rahmawati; Gregah Pangayoman Hartono Putro; Arfian Alwi Firmansyah
Dedikasi:Jurnal Pengabdian kepada Masyarakat Vol 1, No 2 (2021): Jurnal Dedikasi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/dedikasi.v1i2.76

Abstract

Peningkatan jumlah produksi batik memberikan dampak terhadap lingkungan karena limbah cair yang dihasilkan selama proses pembuatan batik. Penggunaan air dalam proses pembuatan batik rata-rata 25-50 m3 per meter kain. Produksi batik di Indonesia sekitar 500 juta meter per tahun sehingga membutuhkan air 25 juta m3 yang setara dengan kebutuhan air bersih untuk 2500 rumah tangga. Persediaan air bersih tersebut menjadi limbah cair batik dengan volume yang besar, warna yang keruh, dan bau yang menyengat. Limbah cair batik memiliki kandungan pH, Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), dan Total Suspended Solid (TSS) yang tinggi. Solusi yang diberikan untuk mengatasi permasalahan tersebut adalah(1) penyuluhan mengenai kandungan kimia, dampak dan bahaya limbah industri batik terhadap ligkungan dan kehidupan manusia di sekitar kawasan industri, (2) penyuluhan/sosialisasi metode-metode yang dapat diaplikasikan untuk menangani limbah industri batik, (3) Penyuluhan/sosialisasi penggunaan dan perawatan teknologi tepat guna mesin pengolah limbah batik sebagai solusi mengurangi pencemaran limbah batik pada lingkungan hidup, (4) penyerahan teknologi tepat guna berupa green technology alat pengelolaan limbah batik.
Microwave Assisted-Extraction of Essential Oil from Fresh Basil (Ocium basilicium L.) Leaves Ditta Kharisma Yolanda Putri; Atiqa Rahmawati
Journal of Biobased Chemicals Vol. 1 No. 1 (2020): Journal of Biobased Chemicals
Publisher : Program Studi Teknik Kimia Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (935.751 KB) | DOI: 10.19184/jobc.v1i1.105

Abstract

In this research, the extraction of essential oil from fresh basil leaves using solvent-free microwave extraction (SFME)and microwave hydrodistillation (MHD) method. Several parameters influence the extraction of basil oil using SFME method: microwave power, the ratio between the mass of raw material with a volume of distiller (F/D), material size, and length of extraction time. Besides, the components contained in basil oil and changes in oil gland conditions in basil leaves before and after being extracted were also evaluated. The optimum condition was obtained as follows: microwave power of 380 W, the ratio between the mass of raw material with a volume of distiller (F/D) of 0.1 g/mL, raw material size of intact (± 3 cm), with an extraction time of 60 min. Moreover, SFME has a shorter extraction time to produce yields than MHD methods. GC-MS analyzed the composition of basil oil, and there were 49 identified components. This study shows that SFME method more effective than the MHD method for extraction basil oil from fresh leaves based on time extraction and yield.
Effect of Time, pH, and Yeast Concentration on Bioethanol Levels in the Ulva sp. Fermentation Process Aina Christalia Rinastiti; Dianita Ivana Permata; Bekti Palupi; Zuhriah Mumtazah; Meta Fitri Rizkiana; Atiqa Rahmawati
Journal of Biobased Chemicals Vol. 2 No. 2 (2022): Journal of Biobased Chemicals
Publisher : Program Studi Teknik Kimia Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jobc.v2i2.269

Abstract

Bioethanol is a form of renewable energy that is used to reduce dependence on the use of fossil fuels which cause various negative impacts on the environment. Ulva sp. contains high carbohydrates so it has the potential as a raw material for bioethanol production. This study aims to determine the optimum conditions of the fermentation process with the variables used time, pH, and yeast concentration. This study used the results of hydrolysis of Ulva sp. with optimum operating conditions of 0.1 N HCl concentration, 80 mesh particle size, and 450 watt microwave power. Measurement of bioethanol levels was carried out using an alcoholmeter. The results showed that the optimal conditions for fermentation were 7 days of fermentation, pH 5.5, and yeast concentration of 1.5% which resulted in a bioethanol content of 7.55%.
Effect of Ethanol Solution Concentration in the Extraction Process of Centella asiatica L. Bioactive Components Using Microwave-Assisted Extraction (MAE) Method Fira Ulvatur Rohmah; Rina Auliyah Safitri; Ayu Ulum Rahmawati; Atiqa Rahmawati
Journal of Biobased Chemicals Vol. 2 No. 2 (2022): Journal of Biobased Chemicals
Publisher : Program Studi Teknik Kimia Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jobc.v2i2.274

Abstract

The Pegagan plant has a scientific name in the form of Centella asiatica L. which is included in the Centella genus, Apiaceae family, and kingdom Plantae. Pegagan (Centella asiatica L.) has distinctive bioactive components, namely triterpene ester glycoside compounds in the form of asiaticoside and madecassoside, and triterpene group compounds in the form of Asiatic acid and madecassic acid. In this study, the extraction of bioactive components from pegagan was carried out using the Microwave-Assisted Extraction (MAE) method and will study the effect of ethanol solvent concentration in the extraction of bioactive compounds. Analysis of the extracted bioactive content was carried out by analyzing the total phenol content using the Folin-Ciocalteau reagent and ANOVA analysis. The results obtained from the study were in the form of total phenol content as an indication of the presence of bioactive compounds, namely at operating conditions of 450 watts of power, 50% ethanol concentration with a radiation time of 15 minutes which resulted in a total phenol content of 21.9244 mg AGE/g sample. In the ANOVA analysis with ethanol solvent, variables that gave a significant response to the total phenol content were microwave power, radiation time, and ethanol concentration with an R-square value of 95.31%. The effect of ethanol concentration on the total phenol content produced, namely the concentration of pure ethanol solvent will produce extracts with the smallest total phenol content, the effect of extraction time on total phenol content, namely the longer extraction time will increase the total phenol content. Maximum total phenol content using ethanol solvent that is, at operating conditions of 450 watts of power, 10% ethanol concentration with a radiation time of 15 minutes which resulted in a total phenol content of 520 mg AGE/g sample.
Rancang Bangun Prototipe Alat Pengukuran Suhu Kerut Kulit Tersamak Analog Robbika, Fadzkurisma; Atiqa Rahmawati; Baskoro Ajie; Laili Rahmawati; Emiliana Anggriyani; Mario Sariski Dwi E; Ikbal Rizky Putra
Journal of Energy, Materials, & Manufacturing Technology Vol 3 No 01 (2024): Journal of Energy, Materials, & Manufacturing Technology
Publisher : Unit Penelitian, dan Pengabdian Masyarakat (UPPM) Politeknik ATI Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61844/jemmtec.v3i01.749

Abstract

Proses penyamakan kulit merupakan suatu proses konversi bahan organik yang mudah membusuk menjadi bahan stabil yang mampu menahan serangan biokimia Salah satu parameter penting dalam proses penyamakan kulit adalah  suhu pengkerutan kulit. Suhu pengkerutan kulit adalah suhu yang dicapai pada saat kulit mengkerut maksimum 0,3% dari panjang awal, jika kulit dipanaskan secara perlahan-lahan dalam media pemanas. Saat ini masih banyak pelaku industri di dalam negeri yang melakukan uji suhu pengerutan kulit penyamakan dengan menggunakan metode manual namun metode tersebut sangat tidak akurat karena tergantung kejelian operator dalam melihat kulit. Selain itu untuk mengetahui kemasakan kulit juga dapat dilakukan dengan menggunakan alat Leather Shrinkage yang diperjual belikan salah satunya alat Leather Shrinkage merk Gester seri GT-KC23. Namun harga alat tersebut cukup mahal sehingga kurang aplikatif pada industri pengolahan kulit yang berskala kecil dan menengah. Pada penelitian ini akan dilakukan rancang bangun alat pengukuran suhu kerut kulit tersamak yang lebih praktis dan mudah dalam penggunaannya, serta metode pengujiannya sudah baku sesuai dengan Standar Nasional Indonesia (SNI) 06-7127-2005. Alat pengukuran suhu kerut menggunakan sensor suhu air PT-100, pemanas, dan rangkaian indikator pergerakan manual. Data dari sensor suhu akan diproses oleh mikrokontroler Arduino uno.  Pada rancangan alat uji ini dilakukan uji coba pada 4 macam kulit yaitu, kulit nabati, kulit pickle, kulit chamois dan kulit aldehyde. Berdasarkan hasil pengujian alat pada kulit pickle, kulit chamois dan kulit aldehyde juka dibandingkan dengan hasil pengujian dengan alat Leather Shrinkage merk Gester seri GT-KC23 dianggap sudah cukup representatif.
Microwave Assisted-Extraction of Essential Oil from Fresh Basil (Ocium basilicium L.) Leaves Ditta Kharisma Yolanda Putri; Atiqa Rahmawati
JOBC Vol. 1 No. 1 (2020): Journal of Biobased Chemicals
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In this research, the extraction of essential oil from fresh basil leaves using solvent-free microwave extraction (SFME) and microwave hydrodistillation (MHD) methods. Several parameters influence the extraction of basil oil using the SFME method: microwave power, the ratio between the mass of raw material with a volume of distiller (F/D), material size, and length of extraction time. Besides, the components contained in basil oil and changes in oil gland conditions in basil leaves before and after being extracted were also evaluated. The optimum condition was obtained as follows: microwave power of 380 W, the ratio between the mass of raw material with a volume of distiller (F/D) of 0.1 g/mL, raw material size of intact (± 3 cm), with an extraction time of 60 min. Moreover, SFME has a shorter extraction time to produce yields than MHD methods. GC-MS analyzed the composition of basil oil, and there were 49 identified components. This study shows that the SFME method is more effective than the MHD method for the extraction of basil oil from fresh leaves based on time extraction and yield.
Optimization of Extraction of Bioactive Compound from Pegagan Leaves Using Ethanol Solvent With Microwave-Assisted Extraction Method (MAE) Fira Ulvatur Romah; Atiqa Rahmawati; Meta Fitri Rizkiana; Ari Susanti
JOBC Vol. 2 No. 1 (2022): Journal of Biobased Chemicals
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Treatment using natural ingredients in Indonesia is the leading choice, and it is growing in society. This is because treatment with natural ingredients has relatively milder side effects than synthetic treatment. Therefore, further research is needed on natural ingredients that can be used as natural medicines, including pegagan (Centella asiatica (L.)). Several studies have found bioactive compounds in pegagan that can be used in various medical methods. The author wants to know the optimal conditions for extracting pegagan bioactive compounds using the microwave-assisted extraction (MAE) method. This study used the Pegagan leaf size 40 mesh that had been dried. Pegagan leaves were extracted using ethanol as a solvent with microwave power, solvent concentration, and extraction time as variables. Variable power: 150 watts, 300 watts, and 450 watts. Variable solvent concentration 25%, 50%, and 75%. Variable extraction time for 5, 10, and 15 minutes. The results of the study were analyzed using total phenol analysis using the Folin-Ciocalteu method. The research data obtained optimum operating conditions at 75% solvent concentration, 450-watt microwave power, and an extraction time of 10 minutes with a total phenol content of 1251.410225 mg AGE/g sample.
Effect of Time, pH, and Yeast Concentration on Bioethanol Levels in the Ulva sp. Fermentation Process Aina Christalia Rinastiti; Dianita Ivana Permata; Bekti Palupi; Zuhriah Mumtazah; Meta Fitri Rizkiana; Atiqa Rahmawati
JOBC Vol. 2 No. 2 (2022): Journal of Biobased Chemicals
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Bioethanol is a form of renewable energy used to reduce dependence on fossil fuels, which have various adverse environmental impacts. Ulva sp. contains high amounts of carbohydrates, which can potentially be a raw material for bioethanol production. This study aims to determine the optimal conditions of the fermentation process, considering the variables of time, pH, and yeast concentration. This study used the hydrolysis results of Ulva sp. with optimum operating conditions of 0.1 N HCl concentration, 80 mesh particle size, and 450-watt microwave power. Measurement of bioethanol levels was performed using an alcohol meter. The results showed that the optimal conditions for fermentation were 7 days, pH 5.5, and a yeast concentration of 1.5%, resulting in a bioethanol content of 7.55%.
Effect of Ethanol Solution Concentration in the Extraction Process of Centella asiatica L. Bioactive Components Using Microwave-Assisted Extraction (MAE) Method Fira Ulvatur Rohmah; Rina Auliyah Safitri; Ayu Ulum Rahmawati; Atiqa Rahmawati
JOBC Vol. 2 No. 2 (2022): Journal of Biobased Chemicals
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Pegagan plant has a scientific name in the form of Centella asiatica L., which is included in the Centella genus, Apiaceae family, and kingdom Plantae. Pegagan (Centella asiatica L.) has distinctive bioactive components, namely triterpene ester glycoside compounds in the form of asiaticoside and madecassoside, and triterpene group compounds in the form of Asiatic acid and madecassic acid. In this study, the extraction of bioactive components from pegagan was carried out using the Microwave-Assisted Extraction (MAE) method, and the effect of ethanol solvent concentration on the extraction of bioactive compounds was studied. Analysis of the extracted bioactive content was carried out by analyzing the total phenol content using the Folin-Ciocalteau reagent and ANOVA analysis. The results obtained from the study were in the form of total phenol content as an indication of the presence of bioactive compounds, namely at operating conditions of 450 watts of power, 50% ethanol concentration, with a radiation time of 15 minutes, which resulted in a total phenol content of 21.9244 mg AGE/g sample. In the ANOVA analysis with ethanol solvent, variables that gave a significant response to the total phenol content were microwave power, radiation time, and ethanol concentration, with an R-square value of 95.31%. The effect of ethanol concentration on the total phenol content produced, namely the concentration of pure ethanol solvent, will produce extracts with the smallest total phenol content. The effect of extraction time on total phenol content, namely, the longer the extraction time, will increase the total phenol content. Maximum total phenol content using ethanol solvent, that is, at operating conditions of 450 watts of power, 10% ethanol concentration, with a radiation time of 15 minutes, which resulted in a total phenol content of 520 mg AGE/g sample.
Co-Authors Aina Christalia Rinastiti Ari Susanti Ayu Ulum Rahmawati Baskoro Ajie Bekti Palupi Dianita Ivana Permata Ditta Kharisma Yolanda Putri Emiliana Anggriyani Fadzkurisma Robbika Fira Ulvatur Rohmah Fira Ulvatur Romah Firmansyah, Arfian Alwi Gregah Pangayoman Hartono Putro Ikbal Rizky Putra Istiqomah Rahmawati Laili Rahmawati Mario Sariski Dwi E Meta Fitri Rizkiana Rina Auliyah Safitri Robbika, Fadzkurisma Yuafni Zuhriah Mumtazah