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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Specta Journal of Technology
Ainun Zulfikar
Institut Teknologi Kalimantan
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Environmental Science

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Performance of Electrocoagulation Process for Microplastic Fibre Removal from Laundry Wastewater Marita Wulandari; Intan Dwi Wahyu Setyorini; Anggie Melinda Handayani; Ismi Khairunnissa Ariani; Ainun Zulfikar
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 19, No 1 (2022): March 2022
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (521.13 KB) | DOI: 10.14710/presipitasi.v19i1.34-43

Abstract

Laundry wastewater contains not only detergent but also contains fabric fibres and threads. Microplastic fibres have been discovered as a potential source of microplastic fibres in synthetic clothing washed in the environment. To reduce microplastic concentration in wastewater, many approaches have been developed. Electrocoagulation is one of them. Using both synthetic microplastics and laundry wastewater samples, this study examined the performance of electrocoagulation methods to remove microplastics. The flocculation and deposition mechanisms remove microplastic fibre. This research was set up by using a reactor with a volume of 1 L, 60 V of voltage and 60 minutes of contact time. Electrical current of 5A and 10A was applied to remove microplastic fibres during electrocoagulation (EC). The removal efficiency of polyester fibre was 55-68 per cent for 60 minutes with a current of 5A and 42-85 per cent for 60 minutes with a current of 10A. Polyamide fibre removal efficiency in 60 minutes is 53 per cent to 74 per cent at 5A current and 57 per cent to 72 per cent at 10A current. According to this study, it can be concluded that EC can remove microplastic fibre from laundry effluent.
Studi Pengaruh Waktu Alkalisasi pada Ekstraksi Selulosa Berbasis Serat Eceng Gondok (Eichhornia crassipes) Ainun Zulfikar; Ni Putu Sriniti Novi Kartika Putri; Gusti Umindya Nur Tajalla
SPECTA Journal of Technology Vol. 4 No. 2 (2020): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1063.12 KB) | DOI: 10.35718/specta.v4i2.182

Abstract

This study uses fiber from water hyacinth as the object of research, which is a plant that contains lignocellulose which consists of cellulose, lignin, and hemicellulose. Cellulose extraction is needed to obtain purer cellulose. The cellulose extraction method used was alkalization, using a 17.5% NaOH solution in a mass: volume ratio of 1: 100 with a variation of alkalization time for 20 minutes, 40 minutes and 60 minutes and the alkalization method uses the reflux heating method. Tests used in this study were include gravimetric methods namely Chesson Datta, Fourier Transform Infrared (FTIR), and Scanning Electron Microscope (SEM). Chesson Datta is used to determine the quantitative lignocellulose content by reducing the initial mass and final mass of the sample from the process. FTIR is used to determine the functional groups that lignocellulose has from each sample. SEM was conducted to determine the morphology of the water hyacinth fibers before and after the alkalization treatment. The results obtained by Chesson Datta, with the most optimal alkalization time were 20 minutes with 53.3% cellulose content, 27.6% hemicellulose, and 0.3% lignin. FTIR shows the functional groups C = O, C = C, and C-H belonging to lignocellulose along with the shifting of the wave number and the change in absorbance in each variable. SEM shows morphological differences in the fibers undergoing the process of alkalization with those without treatment. So that the alkalization affects the morphology of the water hyacinth fiber.
Pengaruh Penambahan H2O2 sebagai Foaming Agent pada Karakteristik Batu Bata Ringan Tahan Api Berbahan Dasar Fireclay dan Fly Ash PLTU Teluk Balikpapan Adrian Gunawan; Amelia Anggraini Pangestu; Etty Rahmayanti; Andika A.I. Saputra; Intan Dwi Wahyu Setyo Rini; Ainun Zulfikar; A. I. Arobi
SPECTA Journal of Technology Vol. 6 No. 1 (2022): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (273.494 KB) | DOI: 10.35718/specta.v6i1.390

Abstract

Total kebutuhan material refractory di Indonesia mencapai 200.000 ton per tahun, sedangkan kapasitas produksi mencapai 50.000 ton per tahun. Untuk memenuhi kebutuhan tersebut, diperlukan bahan baku alternatif selain bahan baku utama yakni fireclay yang berasal dari tanah liat, yakni Fly Ash (FA) dari sisa pembakaran batu bara di PLTU. Jenis material refractory dalam penelitian ini adalah batu bata ringan tahan api, dengan menggunakan zat Hidrogen Peroksida (H2O2) sebagai foaming agent. Fly Ash digunakan berasal dari PLTU Teluk Balikpapan dengan tingkat substitusi fireclay sebesar 5% s.d 25%, serta H2O2 dengan variasi 5 ml s.d 9 ml. Analisis yang dilakukan adalah XRF untuk FA, serta kuat tekan, densitas, penyerapan, porositas, dan shrinkage untuk specimen batu bata ringan tahan api. Hasil kuat tekan terbaik adalah 0,549 Mpa dengan linier shrinkage 2%, penyerapan 37,46%, 2%, densitas 1,44 g/cm3, dan porositas 50%
Co-Authors A. I. Arobi Adrian Gunawan Amelia Anggraini Pangestu Andika A.I. Saputra Anggie Melinda Handayani Ariani, Ismi Khairunnissa Etty Rahmayanti Gusti Umindya Nur Tajalla Intan Dwi Wahyu Setyo Rini Marita Wulandari Ni Putu Sriniti Novi Kartika Putri