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Institut Teknologi Indonesia
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Bahan Bakar Padat dari Sisa Kempa Biji Bintaro (Cerbera Manghas L) kudrat sunandar
JURNAL ILMU PENGETAHUAN DAN TEKNOLOGI (IPTEK) Vol. 3 No. 1 (2019): Jurnal Ilmu Pengetahuan dan Teknologi (IPTEK)
Publisher : Institut Teknologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31543/jii.v3i1.131

Abstract

Pada saat ini tanaman bintaro(Cerbera manghas L.)  dipergunakan sebagai tanaman hias dan peneduh jalan. Dengan kadar minyak berkisar antara 40 sampai 60%, tanaman bintaro merupakan salah satu tanaman potensial penghasil minyak nabati yang dapat dijadikan sebagai bahan bakar. Pengambilan dan pengempaan minyak ini menghasilkan bungkil biji yang dapat dimanfaatkan sebagai alternatif bahan bakar padat. Tujuan penelitian ini adalah untuk mengetahui potensi pemanfaatan limbah produksi minyak bintaro dengan metode densifikasi sebagai bahan bakar yang memiliki nilai mutu sesuai dengan SNI No. 1/6235/2000 dan mempelajari pengaruh komposisi campuran: cake bintaro, serbuk kayu dan perekat terhadap kualitas briket. Briket bungkil bintaro yang di hasilkan menunjukkan nilai kalor berkisar antara 4365,408 kCal/kg – 5253,276 kCal/kg dengan fixed carbon berkiar antara 10,41% - 17,42%. Briket dengan kadar perekat 5% dengan komposisi bahan 80 gram cake bintaro dan 20 gram serbuk kayu memberikan hasil yang terbaik dilihat dari nilai kalor yang dihasilkan adalah 5253,276 kCal/kg dan fixed carbon yang di hasilkan adalah 17,42 %. Dari uji pembakaran briket yang dihasilkan warna nyala api kuning- jingga, asap yang banyak dan menyengat
Adsorption of Phenol and Iron In Wastewater Using a Mixture of Active Carbon and Zeolite Modified with Chitosan Ratnawati Ratnawati; Rian Hidayat; M. Cece Ariwirdana; Kudrat Sunandar; Wahyudin Wahyudin
Jurnal Sains Materi Indonesia Vol 24, No 1: OCTOBER 2022
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2022.24.1.6691

Abstract

Phenol (C6H5OH) and iron (Fe2+) contained in electroplating industrial wastewater are toxic even at small concentrations. One of the effective methods to remove these compounds is adsorption because the method is easy and simple. Activated carbon and zeolite are types of adsorbents that are often used in wastewater treatment, but both types of adsorbents are not selective in certain chemicals. In this study, modification of zeolite and activated carbon with chitosan was carried out to adsorb waste containing phenol and Fe2+. The variations used were pH (7 and 9) and the adsorbent composition to study its effect on the adsorption of phenol in the presence of Fe2+. Adsorption was carried out in a bed with circulating waste for 2 hours. Feed at pH 9 with adsorbent mixed of zeolite-chitosan composite (Z-Ch) and activated carbon-chitosan composite (AC-Ch) in a ratio of 1:1 gave the optimal results. Under these conditions, 94% and 97% of phenol and Fe2+ were adsorbed, respectively.
Adsorption of Phenol and Iron In Wastewater Using a Mixture of Active Carbon and Zeolite Modified with Chitosan Ratnawati; Rian Hidayat; M. Cece Ariwirdana; Kudrat Sunandar; Wahyudin Wahyudin
Jurnal Sains Materi Indonesia Vol. 24 No. 1 (2022)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Phenol (C6H5OH) and iron (Fe2+) contained in electroplating industrial wastewater are toxic even at small concentrations. One of the effective methods to remove these compounds is adsorption because the method is easy and simple. Activated carbon and zeolite are types of adsorbents that are often used in wastewater treatment, but both types of adsorbents are not selective in certain chemicals. In this study, modification of zeolite and activated carbon with chitosan was carried out to adsorb waste containing phenol and Fe2+. The variations used were pH (7 and 9) and the adsorbent composition to study its effect on the adsorption of phenol in the presence of Fe2+. Adsorption was carried out in a bed with circulating waste for 2 hours. Feed at pH 9 with adsorbent mixed of zeolite-chitosan composite (Z-Ch) and activated carbon-chitosan composite (AC-Ch) in a ratio of 1:1 gave the optimal results. Under these conditions, 94% and 97% of phenol and Fe2+ were adsorbed, respectively.
Co-Authors M. Cece Ariwirdana Ratnawati Ratnawati Rian Hidayat Wahyudin Wahyudin