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All Journal CHEMICA Jurnal Teknik Kimia JTERA (Jurnal Teknologi Rekayasa) I-Com : Indonesian Community Journal Journal of Applied Agricultural Science and Technology
Firda Mahira Alfiata Chusna
Universitas Ahmad Dahlan
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Public Health Social Sciences Other

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Effects of Nutrients Ca and K on Anaerobic Digestion of Food Waste Firda Mahira Alfiata Chusna; Lukhi Mulia Sitophyta; Rachma Tia Evitasari
CHEMICA: Jurnal Teknik Kimia Vol 9, No 1 (2022): April 2022
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v9i1.24538

Abstract

We often find food waste daily, especially on household and restaurant scales. Using food waste for helpful something, biogas is an alternative to reduce wasted waste and produce renewable energy. The anaerobic digestion process is a process that decomposes organic material into biogas with the help of microorganisms in conditions without oxygen. Adding nutrients in the anaerobic digestion process can positively affect biogas-producing microorganisms. One of the nutrients or nutrients studied this time is Ca and K. The provision of nutrient Ca has a positive effect, namely a significant increase in biogas production compared to without the addition of nutrients. However, adding K does not positively impact biogas production is inhibited. Excessive amounts of nutrient K can inhibit the process by inhibiting microorganisms in breaking down intermediate products into biogas. The largest volume of biogas produced for five days came from the reactor with the addition of nutrient Ca, which was 15072 cm3, while the control reactor and reactor with the addition of nutrient K produced biogas of 1648.5 cm3 and 15.7 cm3. The addition of nutrient Ca increases biogas production more than nine times.
Various Types of Acids on Pretreatment of Corn Stover for Enhancing Biogas Yield Lukhi Mulia Shitophyta; Zahra Lintang Cahyaningtyas; Nurul Aulia Syifa; Firda Mahira Alfiata Chusna
JTERA (Jurnal Teknologi Rekayasa) Vol 7, No 2: December 2022
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v7.i2.2022.275-280

Abstract

Biogas production from lignocellulosic biomass has gained attention in the development of renewable fuels. Corn stover belongs to lignocellulosic biomass. Pretreatment is needed to help the digestion of biomass due to its lignocellulosic recalcitrance. This study aims to compare the different types of acids for enhancing biogas production. The experiment was carried out in a 1 L batch digester at room temperature with different acids of HCl, H2SO4, and C2H2O4 at concentrations of 0%, 5%, 10%, and 15%. The acids pretreatment was performed for 24 hr. Results show that pretreatment of C2H2O4 has a positive impact on increasing biogas yield. The highest cumulative yield of 580.8 mL/gVS is obtained at 15% C2H2O4. The increase in acid concentrations decreases the initial pH value. The pH value below 6 reduces biogas yield.
An Analysis of Coal Fly Ashes from Different Combustion Processes for The Agricultural Utilization Farrah Fadhillah Hanum; Yudhi Pramudya; Firda Mahira Alfiata Chusna; Erda Rahmilaila Desfitri; Iqbal Hapsauqi; Nafira Alfi Zaini Amrillah
Journal of Applied Agricultural Science and Technology Vol. 7 No. 2 (2023): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v7i2.79

Abstract

The residue of thermal power plants is known as coal fly ash and has been considered solid waste pollution worldwide. The characteristic of coal fly ashes showed that it contains several components that could be utilized in several fields. One of the potential utilization is in the agricultural application. This study analyzed the characteristic of two different types of coal fly ashes and their effect on the soil. The x-ray fluorescence (XRF) analysis resulted that SiO2, Al2O3, Fe2O3, CaO dan MgO are the five major components in the soil, and both coal fly ash, CFA A and CFA B. This XRF analysis result concluded that coal fly ashes have great potential to be a substitute for silica fertilizer. Then, the effect of the coal fly ash addition also was studied by the moisture content and nutrient (N, P, and K) content characteristics in the soil and the soil-ash mixture. The findings indicated that the addition of 125 grams of coal fly ash A had a greater impact on the soil compared to fly ash B when 250 grams of soil was used.
Pengelolaan dan Pengolahan Sampah Organik di Dukuh Sanan, Kabupaten Bantul Rachma Tia Evitasari; Dinan Yulianto; Firda Mahira Alfiata Chusna
I-Com: Indonesian Community Journal Vol 3 No 2 (2023): I-Com: Indonesian Community Journal (Juni 2023)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (372.777 KB) | DOI: 10.33379/icom.v3i2.2577

Abstract

Dukuh Sanan terletak di Provinsi Daerah Istimewa Yogyakarta, Kabupaten Bantul, Kecamatan Pleret, dan Kelurahan Bawuran. Mayoritas pemuda di Dukuh Sanan tergabung ke dalam karang taruna yang berperan aktif memilah sampah botol plastik dan plastik bening untuk dijual dengan nilai ekonomis yang rendah. Hal ini suatu rintisan yang baik tetapi belum mengakomodasi ketegori sampah lain. Program pengabdian ini berupaya meningkatkan ilmu pengetahuan pemuda karang taruna Dukuh Sanan selaku mitra dalam mengelola dan mengolah sampah organik menjadi pupuk kompos. Metode pelaksanaan pengabdian masyarakat ini terdiri dari tahap pra-pelaksanaan, pelaksanaan, dan pasca-pelaksanaan. Tahap pra-pelaksanaan berupa persiapan dan sosialisasi kegiatan. Tahap pelaksanaan meliputi penyuluhan pemisahan jenis sampah organik dan anorganik, pelatihan pengelolaan sampah dengan prinsip 3R (reduce, reuse, dan recycle), dan pelatihan pembuatan pupuk kompos dari sampah organik. Para peserta mengikuti kegiatan dengan sangat antusias dan berhasil membuat produk berupa pupuk kompos. Tahap pasca-pelaksanaan dilakukan evaluasi peningkatan pengetahuan mengenai pembuatan pupuk kompos sebesar 93%.
Co-Authors Dinan Yulianto Erda Rahmilaila Desfitri Evitasari, Rachma Tia Farrah Fadhillah Hanum Iqbal Hapsauqi Lukhi Mulia Shitophyta Lukhi Mulia Sitophyta Nafira Alfi Zaini Amrillah Nurul Aulia Syifa Yudhi Pramudya Zahra Lintang Cahyaningtyas