Abidin, Khoirul
MEKANIKA: Jurnal Teknik Mesin

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ANALISA PENGARUH PANJANG PIPA GALVANIS DAN DIAMETER BUKAAN KATUP TERHADAP HEAD POMPA PADA POMPA HIDRAM Utomo, Gatut Prijo; Abidin, Khoirul
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12345/jm.v1i01.751

Abstract

Hamlet Ketos and hamlets Cabe is 2 (two) of 7 (seven) hamlet in Wonodadi Kulon, Ngadirojo Pacitan, the problems faced by the community, especially for Hamlet Ketos and hamlets pepper the area of hills and rocks areprone / difficulty getting water net. The approach offered to solve the problem is by making a catchment basin,hydraulic ram and tank water divider.Hydraulic ram works on the principle of water hammer. When the fluid flow is stopped suddenly it changes themomentum of the fluid future will increase the pressure suddenly. Increased pressure is used to lift some of thewater to higher ground. Then designed hydraulic ram which uses the potential energy of the water as a vehicle. Indesigning the authors use the pump inlet pipe length variation of 18 meters, 24 meters and 30 meters and a diameterof the valve opening is full (0.1 meters), 0.08 meters and 0.065 meters. Tests carried out in the river, precisely inHamlet and Hamlet Ketos Cabe, Pacitan.It can be concluded at this test that by using a long inlet pipe diameter of 30 meters and full valve opening is 0.1meters and the discharge pump head has more leverage than other tests, namely the pump head 173 m and waterdischarge (output) generated amounted to 6.68 L / min. So the longer the pipe entrance (L), the higher the pressuredihasilakan, as well as thelarger the diameter of the valve opening, the greater the pressure acting on the hydraulicram, because the greater the time and speed, the momentum was also greater, so the impulse weight the exhaustvalve is closed suddenly make a greater boost the flow exceeds the static pressure inlet pipe, and it affects the pumphead on the hydraulic ramKeywords: hydraulic ram, a long inlet pipe, the diameter of the valve opening
Pemanfaatan Limbah Tempurung Biji Nyamplung (Calophyllum inophyllum) Sebagai Adsorben Logam Berat Timbal (Pb) Abidin, Khoirul; Isa, Ishak; Salimi, Yuszda K.
Jambura Journal of Educational Chemistry Vol 13, No 2 (2018): Agustus
Publisher : Jambura Journal of Educational Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (29.724 KB)

Abstract

Penelitian ini bertujuan untuk mengetahui daya serap arang aktif yang terbuat dari tempurung biji nyamplung terhadap logam berat timbal (Pb) melalui variasi waktu kontak. Tahapan penelitian yaitu pengeringan bahan, karbonisasi, aktivasi, uji kualitas dan identivikasi daya adsopsi. Metode yang digunakan untuk menghasilkan arang aktif terdiri dari proses karbonisasi dan proses aktivasi. Proses karbonisasi dilakukan dengan cara membakar tempurung biji nyamplung menggunakan drum bekas, dan untuk proses aktivasi dilakukan dengan cara kimia yaitu arang direndam menggunakan larutan kimia natrium klorida 15 % (NaCl). Kualitas arang aktif yang diuji yaitu kadar air dan kadar abu, dari hasil pengujian diperoleh hasil rata-rata kadar air sebesar 4,33 %  sedangkan kadar abu rata-rata sebesar 0,42%. Daya adsorpsi arang aktif terhadap logam Pb dengan menggunakan variasi waktu kontak (20, 40 dan 60 menit) diperoleh hasil berturut-turut 98.65, 99.32 dan 99.10%.