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All Journal Indonesian Journal of Global Health research Jurnal EMA (Ekonomi Manajemen Akuntansi) ARZUSIN: Jurnal Manajemen dan Pendidikan Dasar Entrepreneurship and Community Development Jurnal Ekonomi Bisnis Manajemen dan Akuntansi (Jebisma) Jurnal ATMOSPHERE
Retnowati, Dewi
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Religion Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Nursing Public Health Social Sciences

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Journal : jurnal atmosphere

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PUPUK MULTINUTRIENT BERBASIS GEL DARI LIMBAH MONOKULTUR PROSES FERMENTASI Oktavian, Dio Ajeng; Iswono, Veronica Putri; Dinnastyar, Faishal Ahmad; Marsen, Vinsen Alexander; Retnowati, Dewi; Anggorowati, Dwi Ana; Rahman, Nanik Astuti
jurnal ATMOSPHERE Vol. 4 No. 2 (2023): ATMOSPHERE
Publisher : Teknik Kimia ITN Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/atmosphere.v4i2.8471

Abstract

Gel organic fertilizer is the result of liquid organic fertilizer that is converted from liquid to gel, which is produced naturally. This gel organic fertilizer is an additional material used to meet the nutrient needs of plants to increase better productivity. The source of gel organic fertilizer is not much different from liquid organic fertilizer. Where the material for making gel organic fertilizer can be obtained from agricultural residues, MSME industries, factory waste that has no selling value such as vegetable waste, cheese whey waste, and molasses. This study aims to determine the effect of variable thickening agents on gel fertilizer from various gel structure modifiers. The treatments are as follows: The fixed variable is the fermentation time of 14 days and the independent variable of gel structure modifiers including tapioca starch, Carbopol 94, and Aquakeeper Hydrogel. The results of this research show that the treatment of free variables has a very significant effect and gives the best results without involving auxiliary media such as heating.
OPTIMALISASI ECENG GONDOK (EICCHORNIA CRASSIPES) SEBAGAI PUPUK ORGANIK CAIR UNTUK PERTANIAN BERKELANJUTAN DAN RAMAH LINGKUNGAN Retnowati, Dewi; Dewi, Rini Kartika
jurnal ATMOSPHERE Vol. 6 No. 1 (2025): ATMOSPHERE
Publisher : Teknik Kimia ITN Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/atmosphere.v6i1.14675

Abstract

Fertilizer is one of the commodities that can increase plant productivity by adding macro and micro element supplements so that agricultural and plantation products have good quality and quantity. Water hyacinth (Eichornia Crassipes) is a plant that is very adaptable to poor environmental conditions, water hyacinth is easy to find and grows quickly even in waters with low nutrient levels. The implementation of this research is in the Basic Chemistry Laboratory of Chemical Engineering, Faculty of Industrial Technology, Malang National Institute of Technology. This research covers a series of processes starting from the preparation of tools and materials, including the collection of main raw materials such as water hyacinth and nutrients including bean sprouts, banana peels, rice washing water and coconut water, variables, processing stages, fermentation. the variables used are the control variables of 1500 grams of water hyacinth. EM4 bioactivator 250 ml, molasses 500 ml, water 2250 ml, pH 4-9, Temperature 38-45 oC and variable changes fermentation time 14 days, 21 days, 28 days, 35 days, Nutrients rice washing water 500 ml, banana peel 500 grams, coconut water 500 ml, bean sprouts 500 grams. The pH produced an average of 4.0 and a temperature of 27-28 oC NPK nutrients with nutrients Coconut water produces the highest nitrogen of 0.36% on the 35th day, rice washing water produces the highest phosphorus of 0.1239% on the 28th day and banana peel produces the highest potassium of 0.3764% on the 21st day
Co-Authors Alwi, Itsnaini Muslimati Arnanda Ajisaputra Arsyil Waritsman Dinnastyar, Faishal Ahmad Dwi Ana Anggorowati Fitriyani, Syefalia Hendy Hermawan Indrawati, Novy Karmelita Iswono, Veronica Putri M. Syafriel Marsen, Vinsen Alexander Nanik Astuti Rahman Nila Putri Purwandari, Nila Putri Noor Faidah, Noor Oktavian, Dio Ajeng Pudji Lestari Putri, Devi Setya Rini Kartika Dewi Shabri S, Moh. Susilo, Hardi Syaqinah, Sirly Noer