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Wahyu Bambang Widayatno
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REDUCE CO ON CAR BY USING ZEOLITE MIFTAH FARHANA; Budiyono Budiyono; Nikie Astorina Yunita Dewanti; Wahyu Bambang Widayatno
Widyariset Vol 6, No 2 (2020): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/widyariset.6.2.2020.107-115

Abstract

The number of vehicles in Jakarta increased by 5.66% from 2016. Vehicles have the highest contribution to air pollution, which is 70% of other activities. The purpose of this study was to determine the reduction of CO with zeolite pellets. This type of research is a quasi-experimental design with a non-equivalent control group design pre-test post-test design. The emission test instrument uses the automotive gas analyzer HESBOHN, a tachometer to measure engine speed, laptops, and stopwatches. The material used is activated natural zeolite pellets. Data were analyzed by univariate in the form of CO adsorption power efficiency, average, minimum, and maximum. The variables used are pellet drying time (3 hours and 24 hours) and engine speed (idle and 1250 rpm). The result of CO adsorption power efficiency using the most optimal zeolite pellets is Pellet I with 3 hours drying at 1250 rpm by 52%. While the lowest yield is Pellet II with 24-hour drying at idle conditions of 22%. The most effective CO emission reduction is by using Pellet I at 1250 rpm.
Sintesis kalsium pirofospat (Ca2P2O7) dari limbah cangkang telur dengan metode solvothermal Ihsanul Huda; Retno Kusumaningrum; Mi'raj Shabrin Jamil; Wahyu Bambang Widayatno; Agus Sukarto Wismogroho; Nurul Taufiqu Rochman; Alfian Noviyanto
CHEMPUBLISH JOURNAL Vol. 5 No. 1 (2020): Chempublish Journal
Publisher : Universitas Jambi, Fakultas Sains dan Teknologi, Program Studi Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/chp.v5i1.8669

Abstract

Kalsium pirofospat telah berhasil disintesis dengan menggunakan metode solvothermal. Bahan dasar yang digunakan adalah limbah cangkang telur ayam dan bebek. Cangkang telur ayam dan bebek dibersihkan dan digerus, kemudian dikalsinasi pada temperatur 1000°C selama 2 jam untuk mendapatkan serbuk CaO. Serbuk CaO kemudian dicampurkan dengan H3PO4 dan dimasukkan ke dalam bejana solvothermal. Proses solvothermal dilakukan pada temperatur 130°C selama 16 jam. Fasa tunggal CaHPO4 diperoleh setelah proses solvothermal. Kalsinasi serbuk CaHPO4 dilakukan pada tungku muffle dengan temperatur 800°C selama 2 jam dan kondisi atmosfir biasa. Hasil analisa fasa menunjukkan terbentuknya fasa tunggal kalsium pirofospat (Ca2P2O7) tanpa adanya fasa pengotor lainnya. Hasil ini menunjukkan perbandingan Ca dan P adalah 1. Mikrostruktur kalsium pirofospat yang terbentuk agak kasar dengan ukuran partikel rata-rata 590 ± 43 nm untuk cangkang telur ayam dan 455 ± 32 nm untuk cangkang telur bebek. Studi lebih lanjut diperlukan untuk mendapatkan kondisi optimum dari proses solvothermal limbah cangkang telur sehingga bisa didapatkan kalsium pirofospat yang mempunyai ukuran lebih halus dan seragam.
REDUCE CO ON CAR BY USING ZEOLITE MIFTAH FARHANA; Budiyono Budiyono; Nikie Astorina Yunita Dewanti; Wahyu Bambang Widayatno
Widyariset Vol 6, No 2 (2020): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/widyariset.6.2.2020.107-115

Abstract

The number of vehicles in Jakarta increased by 5.66% from 2016. Vehicles have the highest contribution to air pollution, which is 70% of other activities. The purpose of this study was to determine the reduction of CO with zeolite pellets. This type of research is a quasi-experimental design with a non-equivalent control group design pre-test post-test design. The emission test instrument uses the automotive gas analyzer HESBOHN, a tachometer to measure engine speed, laptops, and stopwatches. The material used is activated natural zeolite pellets. Data were analyzed by univariate in the form of CO adsorption power efficiency, average, minimum, and maximum. The variables used are pellet drying time (3 hours and 24 hours) and engine speed (idle and 1250 rpm). The result of CO adsorption power efficiency using the most optimal zeolite pellets is Pellet I with 3 hours drying at 1250 rpm by 52%. While the lowest yield is Pellet II with 24-hour drying at idle conditions of 22%. The most effective CO emission reduction is by using Pellet I at 1250 rpm.
Co-Authors Agus Sukarto Wismogroho Alfian Noviyanto B Budiyono Ihsanul Huda Mi'raj Shabrin Jamil MIFTAH FARHANA Nikie Astorina Yunita Dewanti Nurul Taufiqu Rochman Retno Kusumaningrum