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All Journal Eksergi: Chemical Engineering Journal Walisongo Journal of Chemistry Warta AKAB Journal of Industrial Community Empowerment
Khairati, Miftahul
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Economics, Econometrics & Finance Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Production of Biogas with Two-Stage Fermentation of Cow Dung-Palm Oil Mill Effluent NH, Harmiwati; Supriadi, Eko; Rahmad, Dedy; Akbar, Addin; Khairati, Miftahul; Amrin, M. Zhafran Zharif; Adi, Tegar Trikora; Suhardito, Ibnu; Hidayat, Salsabila Alifia; Phuong, Nguyen Thi Thanh
Walisongo Journal of Chemistry Vol 6, No 1 (2023): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v6i1.13541

Abstract

In this research, biogas is produced from Palm Oil Mill Effluent (POME) by fermentation of cow dung using a stirred reactor and purified by various CO2 and H2S removal techniques. The variables in this study were: composition of cow dung (55%, 60%, 65%, 70%, 75%, 80% w/w), amino acid composition (0.5%, 1%, 1.5% w/w) and length of fermentation time (2, 6, 10, 14, 16 days). The fixed variables were stirring speed (100 rpm), temperature (30oC) and reactor volume (100 L). This research also investigated the effect of using a lime packed reactor on the purity of methane gas. From the results of first stage of fermentation, it was found that the optimum composition of cow dung-POME was at 60% and the fermentation time was 14 days. In the second stage of fermentation using optimum results at first stage compared to fermentation of cow dung without POME, the results of measuring the gas pressure produced in 60% cow dung-POME fermentation were 17.5 Psig greater than fermentation of cow dung without POME of 15 Psig.
Perbandingan Hasil Biofoam dari Limbah Kulit Jagung dan Ampas Tebu Menggunakan Metode Pressing dan Screening Nurillahi, Resi; Mesa, Nazwa Ananda; Putra, Reski Lediyo; Nurmalasari, Enny; Khairati, Miftahul; Baroza, Andika
Journal Warta AKAB Vol 48, No 2 (2024): Desember 2024
Publisher : Politeknik AKA Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55075/wa.v48i2.244

Abstract

Kemasan yang tidak ramah lingkungan menjadi suatu masalah yang saat ini berkembang dengan bertambahnya populasi manusia. Penggunaan styrofoam sebagai bahan kemasan buah sekali pakai menimbulkan limbah yang cukup banyak dan pembakaran styrofoam menimbulkan gas berbahaya seperti styrene, polyaromatic hydrocarbons (PAHs), hydrochlorofluorocarbon (HCFC), dan karbon monoksida. Beberapa inovasi telah digunakan untuk menggantikan Styrofoam sebagai kemasan makanan salah satunya mengganti polimer buatan sebagai bahan baku kemasan dengan polimer alami yang lebih aman dan degradable. Pada penelitian ini digunakan ampas tebu dan kulit jagung sebagai bahan baku untuk membuat biofoam dengan metode screening dan metode thermopressing. Pada penelitian ini akan dikaji karakteristik biofoam yang dihasilkan dari perbedaan metode pembuatan. Tahapan pembuatan Biofoam dimulai dengan membuat pulp masing-masing bahan baku dengan menggunakan larutan NaOH 0,1 M, dengan perbandingan antara serbuk ampas tebu dan NaOH 0,1 M yaitu 1:2 % b/v. Biofoam yang dihasilkan dianalisa dengan beberapa parameter uji yaitu Uji Organoleptik, Uji Daya Serap Air, Uji Biodegrability, Uji Kebocoran, Uji kuat Tarik. Hasil dari pembuatan biofoam dengan perbedaan metode pembuatan menunjukkan bahwa, hasil biofoam terbaik yaitu biofoam yang berasal dari kulit jagung dengan metode screening, hasil analisa organoleptic menujukkan bahwa permukaan yang dihasilkan lebih halus, memiliki daya serap air 24.33%, mengalami kerusakan 10% pada 15 hari pengamatan pada uji biodegrability, dan memiliki nilai kuat Tarik tertinggi yaitu 2.83 N/mm2. Biofoam dari kulit jagung dengan metode screening yang dihasilkan memiliki potensi yang lebih baik dibandingkan dengan variable lainnya.
Pembuatan Nata De Coco di Nagari Kamang Hilir Kabupaten Agam Sebagai Upaya Pemberdayaan Masyarakat Ulia, Hasnah; Aini, Apsari Puspita; Nurmalasari, Enny; Khairati, Miftahul; Luthfi, Muhammad Zulfikar; Yahya , Agung Kurnia
Journal of Industrial Community Empowerment Vol. 2 No. 1 (2023)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v2i1.190

Abstract

Agam district has a coconut plantation of 56,744 hectares with an average production of 3,000 tons per year. Coconut water is one of the coconut plant products that has not been utilized optimally. Many benefits or new products that have a higher selling value use coconut water as a raw material. One of the products derived from coconut water that we consume daily is Nata de coco. Nata de coco has high fiber, but low in calories. Nata de coco can also be a business opportunity for the home industry. Based on the business opportunity from Nata de coco, The community service of Politeknik ATI Padang held the training of the production of Nata de coco to the women community in Kamang Hilir Village, Agam District, West Sumatera. The training was carried out on February 5, 2023 attended by 30 participants. The training began with the explanation about the materials and tools used in making Nata de coco. The main materials used were coconut water, urea, sugar, Acetobacter xylinum. Then, the practice is carried out jointly between the women community and the community service team from Politeknik ATI Padang. The training was closed with the presentation of business prospective from Nata de coco. All of the participants were enthusiastic with this training. It is expected that the women community in Kamang Hilir Village have the knowledge and the skill to make their own Nata de coco.
Comparison of Different Types of Bleaching Earth on the Quality of Bleaching Palm Oil (BPO) Khairati, Miftahul; Aini, Apsari Puspita; Nurmalasari, Enny; Yahya, Agung Kurnia
Eksergi Vol 22 No 1 (2025)
Publisher : Prodi Teknik Kimia, Fakultas Teknik Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v22i1.13311

Abstract

Bleaching Earth (BE), primarily derived from Bentonite, is widely used in the bleaching process of Crude Palm Oil (CPO). Its efficiency depends on the proportions of SiO₂ and Al₂O₃, which enable effective pigment absorption. This study evaluates the performance of unmodified Bentonite, nano SiO₂-modified Bentonite, and commercial BE in producing Bleached Palm Oil (BPO). The novelty lies in the nano SiO₂ modification, designed to enhance the structural properties and absorption capabilities of Bentonite. Characterization of BE was conducted using Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM), while BPO quality was assessed through parameters like moisture content, acid value, Free Fatty Acid (FFA) levels, (Deterioration of Bleachability Index (DOBI), and β-carotene concentration. The results showed that BPO processed with nano SiO₂-modified Bentonite had the lowest β-carotene concentration (443%) and a DOBI value of 1.453, demonstrating superior bleaching performance compared to unmodified and commercial BE. Other parameters, including FFA levels and moisture content, exhibited minimal variation. Color analysis revealed that BPO processed with nano SiO₂-modified Bentonite achieved a comparable color value (1.5/15) to commercial BE. These findings highlight the potential of nano SiO₂-modified bentonite for improving oil quality by reducing FFA and acid value while maintaining optimal moisture content, offering a novel and effective alternative to unmodified bentonite in oil refining.
Co-Authors Addin Akbar Adi, Tegar Trikora Aini, Apsari Puspita Amrin, M. Zhafran Zharif Baroza, Andika Eko Supriadi Enny Nurmalasari Hidayat, Salsabila Alifia Mesa, Nazwa Ananda Muhammad Zulfikar Luthfi NH, Harmiwati Nurillahi, Resi Phuong, Nguyen Thi Thanh Putra, Reski Lediyo Rahmad, Dedy Suhardito, Ibnu Ulia, Hasnah Yahya , Agung Kurnia Yahya, Agung Kurnia