{"id":34137,"date":"2018-07-12T09:58:44","date_gmt":"2018-07-12T09:58:44","guid":{"rendered":"https:\/\/www.its.ac.id\/news\/?p=34137"},"modified":"2018-07-12T09:58:44","modified_gmt":"2018-07-12T09:58:44","slug":"manfaatkan-limbah-batubara-mahasiswa-ciptakan-material-pemurni-biogas","status":"publish","type":"post","link":"https:\/\/www.its.ac.id\/news\/manfaatkan-limbah-batubara-mahasiswa-ciptakan-material-pemurni-biogas\/","title":{"rendered":"Manfaatkan Limbah Batubara, Mahasiswa ITS Ciptakan Material Pemurni Biogas"},"content":{"rendered":"
\"\"
Pradena Bhesari Fitrah Laharto (kiri) dan Umirul Solichah Fauzany sedang mengukur volume larutan di laboratorium Departemen Kimia ITS.<\/figcaption><\/figure>\n

Kampus ITS, ITS News –<\/strong> Bottom ash<\/em> atau abu dasar kerap menjadi limbah utama bagi tiap industri Pembangkit Listrik Tenaga Uap (PLTU). Hasil pembakaran batu bara ini biasanya ditimbun di suatu area industri PLTU dan tidak dimanfaatkan secara maksimal. Apalagi abu dasar termasuk limbah B3 (Bahan Beracun dan Berbahaya), yang tentunya menimbulkan bahaya yang serius bagi lingkungan.<\/p><\/blockquote>\n

Terkait hal tersebut, tiga mahasiswa dari Departemen Kimia Institut Teknologi Sepuluh Nopember (ITS) Surabaya berhasil memanfaatkan limbah abu dasar sebagai material pemurni biogas yang ramah lingkungan. Ketiga mahasiswa tersebut adalah Pradena Bhesari Fitrah Laharto, Aristin Putri Kusuma Anggraini, dan Umirul Solichah Fauzany. Sedang pencetus ide dan pengarah utuk karya ini adalah mahasiswa pascasarjana Kimia, Randy Yusuf Kurniawan di bawah bimbingan Ir Endang Purwanti Setya N MT.<\/p>\n

Menurut tim, biogas mengandung gas metana murni, sementara gas metana di alam bercampur dengan gas pengotor. Untuk memperoleh gas murni tersebut dari alam, dilakukanlah teknik pemurnian gas alam. \u201cBiasanya teknik pemurnian tersebut sangat mahal karena membutuhkan larutan-larutan kimia yang harganya juga relatif mahal, berbeda dengan penelitian kami yang menggunakan limbah,\u201d jelas Randy.<\/p>\n

\"\"
Aristin Putri Kusuma Anggraini, Umirul Solichah Fauzany, dan Pradena Bhesari Fitrah Laharto sedang membahas hasil penelitian mereka.<\/figcaption><\/figure>\n

Terkait dengan limbah yang digunakan, Randy menuturkan bahwa limbah abu dasar atau bottom ash yang diperoleh memiliki komponen penyusun utama, yakni silika. Silika tersebut dibentuk menjadi mesopori dan diteliti memiliki kemampuan untuk mengadsorpsi gas metana dari pengotor seperti karbondioksida dan asam sulfida. \u201cMesopori merupakan material padatan berpori yang memiliki ukuran meso, yakni 2 sampai 50 nanometer,\u201d papar Randy lebih lanjut.<\/p>\n

Ketua tim, Pradena Bhesari Fitrah Laharto menambahkan, silika mesopori masih belum cukup untuk meningkatkan daya adsorpsi gas metana. Perlu penambahan zat kimia polietilen glikol (PEG) 4000. Angka 4000 menunjukkan massa molekul PEG yang memiliki sifat kekentalan yang rendah, sehingga ketika diimpregnasi dengan mesopori, maka porinya tidak tertutup.<\/p>\n

\u201cJika pori tersebut terbuka, maka adsorpsi gas metana menjadi lebih mudah dan molekul gas lain akan tertahan, sehingga didapatkan metana murni\u201d tuturnya. Mahasiswa yang akrab disapa Fira itu, juga menjelaskan bahwa impregnasi merupakan teknik menambahkan suatu material seperti polietilen glikol ke dalam bagian pori (Silika Mesopori).<\/p>\n

\"\"
Umirul Solichah Fauzany (kiri) dan Pradena Bhesari Fitrah Laharto menunjukkan silika mesopori.<\/figcaption><\/figure>\n

Dalam melakukan penelitiannya, tim mengambil sampel limbah abu dasar sebanyak lima gram dengan kandungan berat 1,15 gram silika di dalamnya. \u201cKandungan silika tersebut sangat sedikit, sehingga kami perlu meningkatkan kandungan silika dari 1,15 gram menjadi 2,165 gram dengan pemisahan besi dan kalsium agar bagus hasilnya,\u201d jelas mahasiswa semester tujuh itu.<\/p>\n

Anggota tim, Umirul Solichah Fauzany, juga menuturkan bahwa inovasi dari penelitian timnya ini berharap bisa dikembangkan dan digunakan oleh industri biogas sebagai material pemurni biogas yang ramah lingkungan. Sehingga biaya pembelian biogas oleh masyarakat tidak begitu mahal.<\/p>\n

Tim ini berharap bisa membawa karyanya turut bertarung di ajang Pekan Ilmiah Mahasiswa Nasional (Pimnas) di Yogyakarta, akhir Agustus mendatang. Di dalam ajang kompetisi bidang penelitian ini, diharapkan juga karya mereka mampu menjadi juara nantinya. (rio\/Humas ITS)<\/p>\n

\"\"
(Dari kiri ke kanan) Aristin Putri Kusuma Anggraini, Umirul Solichah Fauzany, Pradena Bhesari Fitrah Laharto, Ir Endang Purwanti Setya N MT, dan Randy Yusuf Kurniawan.<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Kampus ITS, ITS News – Bottom ash atau abu dasar kerap menjadi limbah utama bagi tiap industri Pembangkit Listrik Tenaga Uap (PLTU). Hasil pembakaran batu bara ini biasanya ditimbun di suatu area industri PLTU dan tidak dimanfaatkan secara maksimal. Apalagi abu dasar termasuk limbah B3 (Bahan Beracun dan Berbahaya), yang tentunya menimbulkan bahaya yang serius […]<\/p>\n","protected":false},"author":33,"featured_media":34139,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"categories":[14,1],"tags":[],"class_list":["post-34137","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-berita-utama","category-riset-dan-teknologi"],"yoast_head":"\nManfaatkan Limbah Batubara, Mahasiswa ITS Ciptakan Material Pemurni Biogas - ITS News<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.its.ac.id\/news\/manfaatkan-limbah-batubara-mahasiswa-ciptakan-material-pemurni-biogas\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Manfaatkan Limbah Batubara, Mahasiswa ITS Ciptakan Material Pemurni Biogas - ITS News\" \/>\n<meta property=\"og:description\" content=\"Kampus ITS, ITS News – Bottom ash atau abu dasar kerap menjadi limbah utama bagi tiap industri Pembangkit Listrik Tenaga Uap (PLTU). 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