During the pandemic, we are getting more demanded to maintain cleanliness and wash our hands frequently. The purpose of this community service activities is to educate the public in processing cooking oil waste into a useful product, that is soap. This activity is carried out as an effort to support the government program namely 5 M, which is one of the activity from this program is washing hands with soap. This activity was carried out in Tegal Kunir Kidul Village, Mauk Sub-District, Tangerang District. The methods that we used are workshops and direct mentoring. The participants who attended the workshop were 30 persons, consisting of program at village level womens and youth organizations. The results obtained from this workshop are the increasing of resident’s insight in terms of processing waste, as well as increasing skills in making soap products from cooking oil waste. In the future, it will not only come to waste processing, but also making the opportunities to increase businesses that can be manage by local villages.
The amount of household waste such as fruit peel waste which is organic waste will have an impact on the environment. The organic waste can be processed into eco-enzyme. Eco-enzyme is obtained from the fermentation process. The fruit peel used are watermelon, pineapple, banana, and orange. The fermentation process used fruit peel waste, water, and sugar in a ratio of 3 : 10 : 1. After 90 days of the fermentation process, filtering is carried out to obtain the filtrate which is an eco-enzyme. The obtained of eco-enzyme has brown and a sour aroma. Eco-enzyme positive has contains acetic acid and lactic acid, also flavonoids, alkaloids, and saponins. This eco-enzyme can be used to cleaned the floors, as a fertilizer, and others. It has changed what was a waste at the first, into something that has many benefits, by processed the waste in the right way.
Tujuan dari penelitian ini adalah untuk mengidentifikasi perbedaan peningkatan efikasi diri antara kelas eksperimen yang menerapkan model pembelajaran kooperatif tipe STAD dengan kelas kontrol yang menerapkan model pembelajaran kooperatif konvensional. Metode penelitian yang digunakan adalah quasi experiment dengan desain penelitian nonequivalent control group design yang melibatkan dua kelas penelitian yaitu kelas eksperimen dan kelas kontrol. Kuesioner yang diadaptasi dari College Chemistry Self-Efficacy Scale (CCSS) digunakan sebagai instrumen penelitian. Hasil penelitian menunjukkan terdapat perbedaan peningkatan efikasi diri yang signifikan (p<0,05) antara kelas eksperimen (<g> = 0,55) dengan kelas kontrol (<g> = 0,35). Disarankan bahwa model pembelajaran kooperatif tipe STAD dapat diterapkan dalam berbagai proses pembelajaran karena melalui model pembelajaran tersebut dapat meningkatkan efikasi diri. Pengembangan efikasi diri sama pentingnya dengan pengembangan penguasaan konsep.
sejalan dengan pertumbuhan jumlah penduduk di Indonesia. Salah satu limbah organik yang banyak dihasilkan dari produksi makanan adalah kulit talas Bogor. Limbah kulit talas ini kami konversi menjadi bioetanol dengan metode fermentasi menggunakan ragi tape yang mengandung saccharomyces cereviceae dengan variasi lama fermentasi 4,6,8,10 dan 12 hari. Hasil fermentasi kemudian dipisahkan dengan metode destilasi dan didapatkan berat jenis destilat 0,8483 gr/mL. Dari penelitian ini didapatkan destilat bioetanol sebanyak 79 mL dengan yield 14,68%. Dengan demikian limbah kulit talas memiliki potensi untuk konversi biomassa menjadi bioetanol yang merupakan salah satu bahan bakar alternative yang ramah lingkungan.Kata kunci: limbah kulit talas Bogor, fermentasi, bioetanol Abstract.[ Utilization of Bogor Taro Skin Waste (Colocasia Esculenta) As an Alternative Energy Source of Bioethanols]The handling of organic waste both domestic waste and industrial waste is a very important thing to be developed because the amount of waste or organic waste is in line with the growth of the population in Indonesia. One of the many organic wastes produced from food production is Bogor taro skin. We convert taro skin waste into bioethanol by fermentation method using yeast tape containing saccharomyces cereviceae with long fermentation variations 4,6,8,10 and 12 days. The results of fermentation were then separated by a distillation method and obtained by the specific gravity of distillate 0.8483 gr / mL. From this study, 79 mL bioethanol distillate was obtained with a yield of 14.68%. Thus taro skin waste has the potential to convert biomass into bioethanol which is one of the alternative fuels that is environmentally friendly.
Berkembangnya berbagai bidang industri yang menggunakan pewarna sintetis di duniaberimbas pada meningkatnya pencemaran lingkungan air di sekitar lingkungan industry tersebut.Pencemaran lingkungan air oleh limbah zat warna ini berbahaya untuk kesehatan manusia maupun biotaair di tempat lingkungan tercemar. Penanggulangan limbah cair zat warna sintetis ini sudah banyakdikembangkan berbagai metode seperti fotolisis, biodegradasi, elektrokimia dan sebagainya. Degradasielektrokimia sudah berkembang saat ini dengan elektroda-elektroda baru terhadap berbagai zat warnasintetis. Zat warna sintetis yang paling luas penggunaannya adalah zat warna azo yang memilikispesifikasi ikatan N=N. Artikel ini menampilkan berbagai riset yang dilakukan oleh peneliti-penelitiyang mengembangkan degradasi elektrokimia terhadap berbagai zat warna sintetis azo (azo dyes). Metodeini memberikan hasil yang signifikan terhadap dekolorisasi zat warna dan COD removal yang sangatbagus diberbagai hasil riset. Sehingga degradasi elektrokimia merupaka metode yang menjanjikan dimasadepan untuk penanggulangan limbah zat warna yang ramah lingkungan karena penggunaan bahan kimiayang sedikit.Kata kunci: Azo Dyes, degradasi elektrokimia, pencemaran lingkungan
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