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Coaxyl-mask: Masker Ramah Lingkungan dari Sabut Kelapa (Cocos nucifera) dan Acetobacter xylinum Sinta Setyaningrum; Zahra Nur Salsabila; Aisyah Auliya Rahmawati; Anindya Indrita Putri; Dhea Nurul Amalia; Syakira Athiya Tsany
Fluida Vol 15 No 1 (2022): FLUIDA
Publisher : Jurusan Teknik Kimia, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v15i1.3481

Penggunaan masker bagi setiap orang dinilai efektif untuk membatasi penyebaran Covid-19. Namun, permasalahan lingkungan muncul akibat dari banyaknya penggunaan masker karena masker sekali pakai sulit untuk terurai secara alami. Maka dari itu, Coaxyl-mask merupakan inovasi masker sekali pakai yang terbuat dari bioselulosa hasil fermentasi Acetobacter xylinum dan sabut Cocos nucifera. Masker ini terdiri dari 3 lapisan yaitu film bioselulosa yang memiliki sifat water repellent, filter sabut kelapa, dan film bioselulosa sehingga mampu terdekomposisi dengan cepat jika dibandingkan dengan masker sekali pakai pada umumnya. Pada gagasan yang diusulkan ini, perancangan teknik implementasi Coaxyl-mask yaitu dengan melibatkan banyak pihak seperti, pedagang kelapa, produsen masker, tim riset perusahaan medis, dan pabrik independen. Diprediksi masker ini akan memiliki manfaat yang panjang sebagai alat pelindung pada saat pandemi dan mampu menjadi solusi dalam menangani pencemaran atau penimbunan masker seiring dengan jumlah pemakai yang banyak. Wearing masks has been proven to be the most effective in preventing and minimising the spread of Covid-19. However, there is an environmental risk along with the growing demand of single-use masks. This is caused as the single use mask waste cannot be degraded naturally. Therefore, Coaxyl-mask is a green innovation of masks that is made from biocellulose produced by fermentation of glucose using Acetobacter xylinum and coconut husk waste. This mask is made of three layers of water repellent biocellulose film, a filter made from coconut husk, and another biocellulose film that is non-irritative to the skin. As the materials were made of natural materials, this mask can degrade naturally faster compared to conventional single use masks, so it is environmentally friendly. To implement this idea, there need to be a lot of party involved such as coconut seller, mask producers, medical equipment research team, and independent factories. Because its biodegradable materials, this mask will be a revolutionary invention in medical industry and will be very useful in preventing diseases while saving the environment.

Pemanfaatan Ekstrak Daun Jambu Biji Sebagai Inhibitur Korosi Baja Paduan dalam Medium Larutan NaCl Agustinus Ngatin; Annisaa Fitri Wulandari; Asri Dwi Saffanah; Dian Ratna Suminar; Sinta Setyaningrum
Fluida Vol 15 No 2 (2022): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v15i2.3923

Korosi merupakan masalah yang tak dapat dihindari oleh industri. Salah satu upaya untuk menekan laju korosi adalah dengan menggunakan inhibitor korosi. Daun jambu biji (Psidium guajava L.) mengandung antioksidan berupa tanin yang dapat dimanfaatkan sebagai inhibitor korosi organik ramah lingkungan pada baja paduan tinggi dalam medium larutan NaCl 3,56% (b/v). Ekstrak daun jambu biji didapatkan dengan metode maserasi, sedangkan pengkorosian dengan metode perendaman. Penelitian ini bertujuan untuk mengkaji pengaruh konsentrasi inhibitor ekstrak daun jambu biji dan waktu pengkorosian terhadap laju korosi dengan efisiensi inhibisinya pada baja paduan tinggi dalam medium larutan NaCl 3,56%. Hasil penelitian menujukkan bahwa laju korosi terendah dicapai pada konsentrasi inhibitor ekstrak 400 ppm sebesar 0,0244 mm/y dengan efisiensi inhibisi 53,03%. Pengaruh waktu pengkorosian baja paduan tinggi pada konsentrasi inhibitor ekstrak 400 dan 800 ppm menghasilkan laju korosi terendah pada waktu 192 jam, yaitu 0,0301 dan 0,0282 mm/y. Penggunaan ekstrak daun jambu biji sebagai inhibitor korosi berhasil menurunkan laju korosi baja paduan tinggi dalam medium larutan NaCl 3,56%.

Coaxyl-mask: Masker Ramah Lingkungan dari Sabut Kelapa (Cocos nucifera) dan Acetobacter xylinum Sinta Setyaningrum; Zahra Nur Salsabila; Aisyah Auliya Rahmawati; Anindya Indrita Putri; Dhea Nurul Amalia; Syakira Athiya Tsany
Fluida Vol 15 No 1 (2022): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v15i1.3481

Penggunaan masker bagi setiap orang dinilai efektif untuk membatasi penyebaran Covid-19. Namun, permasalahan lingkungan muncul akibat dari banyaknya penggunaan masker karena masker sekali pakai sulit untuk terurai secara alami. Maka dari itu, Coaxyl-mask merupakan inovasi masker sekali pakai yang terbuat dari bioselulosa hasil fermentasi Acetobacter xylinum dan sabut Cocos nucifera. Masker ini terdiri dari 3 lapisan yaitu film bioselulosa yang memiliki sifat water repellent, filter sabut kelapa, dan film bioselulosa sehingga mampu terdekomposisi dengan cepat jika dibandingkan dengan masker sekali pakai pada umumnya. Pada gagasan yang diusulkan ini, perancangan teknik implementasi Coaxyl-mask yaitu dengan melibatkan banyak pihak seperti, pedagang kelapa, produsen masker, tim riset perusahaan medis, dan pabrik independen. Diprediksi masker ini akan memiliki manfaat yang panjang sebagai alat pelindung pada saat pandemi dan mampu menjadi solusi dalam menangani pencemaran atau penimbunan masker seiring dengan jumlah pemakai yang banyak. Wearing masks has been proven to be the most effective in preventing and minimising the spread of Covid-19. However, there is an environmental risk along with the growing demand of single-use masks. This is caused as the single use mask waste cannot be degraded naturally. Therefore, Coaxyl-mask is a green innovation of masks that is made from biocellulose produced by fermentation of glucose using Acetobacter xylinum and coconut husk waste. This mask is made of three layers of water repellent biocellulose film, a filter made from coconut husk, and another biocellulose film that is non-irritative to the skin. As the materials were made of natural materials, this mask can degrade naturally faster compared to conventional single use masks, so it is environmentally friendly. To implement this idea, there need to be a lot of party involved such as coconut seller, mask producers, medical equipment research team, and independent factories. Because its biodegradable materials, this mask will be a revolutionary invention in medical industry and will be very useful in preventing diseases while saving the environment.

Application of Gold Nanoparticles Synthesized with Malva Nut Gum as Reducing Agent for scFv Conjugates in a Colorimetric Chikungunya Virus Detection Muhamad Zulchoir Rasyid; Ratna Yulistya Ningrum; Sinta Setyaningrum; Budi Santoso; Muhammad Yusuf; Bachti Alisjahbana; Toto Subroto; Bevi Lidya
Fluida Vol 16 No 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4493

Gold nanoparticles have good surface plasmon properties in the presence of free electrons on their surface. The presence of free electrons on the surface of the plasmon causes gold nanoparticles to be able to bind to various kinds of biomolecules and proteins, including single-chain variable fragments (scFv). In this study, gold nanoparticle conjugates with Chikungunya antiviral scFv have been successfully prepared with the aim of developing a colorimetric method for rapid detection of envelope protein Chikungunya virus (E2 CHIKV). The manufacture of gold nanoparticles was carried out using malva nut gum and trisodium citrate as reducing agents. The results showed the formation of the AuNP-scFv conjugate which was characterized by a shift in the maximum wavelength for gold nanoparticles synthesized using malva nut gum as a reducing agent from 532.89 nm to 536.62 nm. Similarly, for gold nanoparticles synthesized using trisodium citrate as a reducing agent, the maximum wavelength shifted from 528.99 nm to 531.95 nm. The detection result of E2 CHIKV protein using the AuNP-scFv conjugate has not shown a positive result

The Methylene Blue Adsorption by Calcium Alginate-Activated Carbon Composite in Fixed Bed Column Wardana Putra, Adzikri; Hermawan, Heru; Setyaningrum, Sinta; Paramitha, Tifa
Fluida Vol. 17 No. 2 (2024): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v17i2.4926

Methylene blue is a material that is often used as a cationic dye in the textile industry. Methylene blue is toxic and difficult to degrade. Adsorption is one method to reduce the methylene blue from wastewater. In this study, methylene blue was adsorbed by calcium alginate/activated carbon composite (CaAlg-AcC) in a fixed bed column. The influence of CaCl2.2H2O concentration, initial concentration of methylene blue, and flow rate in the continuous adsorption process were investigated. Every adsorption process was done in 110 min. The results revealed that the CaAlg-AcC composite synthesized using 1% (w/v) CaCl2.2H2O solution has the highest adsorption percentage, 95.28% in 110 min. The initial methylene blue concentration 50 mg/L gave the highest result of adsorption percentage with the smallest amount of methylene blue adsorbed of 31.77 mg. The flow rate of methylene blue 4 ml/min reached the highest adsorption percentage with the amount of methylene blue adsorbed of 41.79 mg.

Effect of Water Hyacinthâ€™s Particle Size as Additional Substrate to the Leachate Anaerobic Bioreactor Ramadhani, Laily Isna; Widyabudiningsih, Dewi; Wirawan, Feri; Almarnugraha, Aditya; Setyaningrum, Sinta
Fluida Vol. 17 No. 1 (2024): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v17i1.5503

Municipal solid waste leachate contains landfill-produced organic contaminants. Leachate with the high organic content pottentially pollute nearby waterways. The high content of pollutants in leachate is represented by the measured Chemical Oxygen Demand (COD) content. Therefore, leachate was carried out using the anaerobic method. The anaerobic approach was chosen because it can process high-organic waste and produce biogas, in which methane in biogas may be used as renewable energy. Leachate from old landfills is heavy in nitrogen, thus to optimize the anaerobic process, it must be mixed with high-carbon substrates. Water hyacinth, a fast-growing plant with a high carbon content, is a weed because it pottentially damage the ecosystem. This research begins by comparing the anaerobic reactor with a single substrate of leachate and a mixed substrate (leachate and water hyacinth). Water hyacinth was added with size variations of 1 mm; 5 mm; 10 mm; and 15 mm. From the four variations, the mixed substrate reactor had a higher COD reduction efficiency than the single substrate in all water hyacinth sizes. The optimum particle size of water hyacinth is 1 mm, resulted the highest COD reduction efficiency of 81% and the highest biogas cummulative volume of 4,230 mL. The addition of water hyacinth as an additional substrate statisticaly proven has a strong correlation to the increasing efficiency of COD removal compared to the biogas production.

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