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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan CHEESA: Chemical Engineering Research Articles
Nurani Ikhlas
Institut Teknologi Pembangunan Surabaya
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences

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Pengaruh Ekstraksi SiO2 dari Lumpur Lapindo Terhadap Daya Adsorpsinya pada Larutan Metil Orange Ika Fitri Ulfindrayani; Nurani Ikhlas; Qurrota A’yuni; Nurull Fanani; Binaria Lumban Gaol; Devi Lestari
CHEESA: Chemical Engineering Research Articles Vol 2, No 2 (2019)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (340.736 KB) | DOI: 10.25273/cheesa.v2i2.5108

Abstract

Metil orange merupakan salah satu zat warna yang banyak digunakan di industri tekstil. Metil orange ini tergolong ke dalam zat warna yang berbahaya bagi lingkungan. Salah satu metode yang baik digunakan untuk mengurangi bahaya dari metil orange yaitu metode adsorpsi. SiO2 diketahui memiliki sifat adsorben yang baik karena memiliki struktur dan sifat permukaan yang stabil terhadap bahan kimia. Lumpur Lapindo merupakan salah satu sumber SiO2 yang keberadanya melimpah. Kandungan SiO2 pada Lumpur Lapindo yakni sebesar 55%. Tingginya kandungan SiO2 dalam Lumpur Lapindo, membuat lumpur lapindo memiliki daya adsorpsi yang baik. Pada penelitian ini Lumpur Lapindo digunakan sebagai adsorben untuk metil orange. Proses adsorpsi dilakukan dengan metode batch. Lumpur Lapindo dipreparasi terlebih dahulu untuk mengetahui pengaruhnya terhadap daya adsorpsi pada Metil orange. Preparasi dilakukan dengan ekstraksi SiO2 dari Lumpur Lapindo menggunakan metode kopresipitasi yang dapat meningkatkan kemurnian SiO2 dari 50% menjadi 78,6%. SiO2 hasil ekstraksi memiliki %removal dan kapasitas adsorpsi yang lebih tinggi dibandingkan dengan lumpur Lapindo masing-masing sebesar 81,39% dan 0,081mg/g.
Measuring the Effect of Kampong AMOI Program on Sustainability Factors using Social Return on Investment Method: A Case Study of Riding Panjang Village, Bangka Barat Retno Suryani; Andriani Silfiana; Nurul Lathifah; Nurani Ikhlas
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 (927.184 KB) | DOI: 10.14710/presipitasi.v19i1.190-198

Abstract

The Kampong AMOI (Integrated Agro-Independent) Program is a community empowerment program carried out by PT Timah Tbk Metallurgical Unit Muntok. This community empowerment was carried out in Riding Panjang Village, Merawang District, Bangka Regency, Air Putih Village, Tanjung Village, Muntok District, and West Bangka Regency. This program integrates three activities, namely nursery perennials, composting, and broiler cultivation. The Kampong AMOI program has a significant impact on the economic and environmental development of the three villages. Therefore, in this paper, the results of the program impact will be analyzed using the evaluative social return on investment (SROI) method. This study aims to comprehensively evaluate, measure, and calculate the impacts of the program's implementation from the environmental, economic, welfare, and social aspects. The Kampong AMOI Community Empowerment Program (Integrated Agro-Independent Village) results have an SROI value of 2.518. This result shows that every IDR 1 invested has a benefit or impact value of IDR 2.518. This result also concludes that the Kampong AMOI program is reasonable to be conducted in Riding Panjang Village, Air Putih Village, and Tanjung Village.
Feasibility Study of Mernek Milik Kita Program (MERLITA) using Social Return on Investment (SROI) Method Retno Suryani; Nurani Ikhlas
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 18, No 3 (2021): November 2021
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (574.208 KB) | DOI: 10.14710/presipitasi.v18i3.367-376

Abstract

The MERLITA (Mernek Milik Kita) program is a community development program for PT Pertamina (Persero) Fuel Terminal Maos Cilacap, which was carried out in Mernek Village, Maos District, Cilacap Regency. This program aims to increase the income of farmers and farm laborers by changing the function of planting rice for consumption into superior seeds. In addition, it also encourages environmentally friendly and sustainable agricultural practices because these seeds can reduce the use of urea which can reduce greenhouse gas emissions. The MERLITA program has a significant impact on economic and environmental development in Mernek Village, the community around Mernek village feels the impact. Therefore, in this paper, the results of the Impact Assessment of the program using the SROI method will be given. The measurement results obtained the value of the SROI ratio of 1.34, indicating that every 1 rupiah invested has an impact value of Rp. 1.34. This situation proves that the MERLITA Program is still feasible to be conducted and still positively impacting Mernek Village economy.
Co-Authors Andriani Silfiana Binaria Lumban Gaol Devi Lestari Ika Fitri Ulfindrayani Nurul Lathifah Nurull Fanani Qurrota A’yuni Retno Suryani