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INDONESIA
Jurnal Teknik Kimia USU
Published by Universitas Sumatera Utara
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering
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Articles 13 Documents
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Search results for , issue "Vol 4, No 4 (2015)" : 13 Documents clear
PENGARUH TINGGI TUMPUKAN PADA PENGOMPOSAN TANDAN KOSONG KELAPA SAWIT MENGGUNAKAN PUPUK ORGANIK AKTIF DARI LIMBAH CAIR PABRIK KELAPA SAWIT DI DALAM KOMPOSTER MENARA DRUM Chamsa Triyadi, Yosi Rahman, Bambang Trisakti
Jurnal Teknik Kimia USU Vol 4, No 4 (2015)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (211.344 KB) | DOI: 10.32734/jutek.v4i4.12030

Abstract

This research aims to determine the composting technique for Empty Fruit Bunch (EFB) and to collect the degration data during composting of EFB in order to get a high quality compost. The composting process was started with cutting the EFB into four parts before it was put into composter and then followed by the addition of Activated Liquid Organic Fertilizer (ALOF) until the optimum moisture content (MC) of 55-65 % was reached. The parameters of temperature, MC, pH, C/N ratio, Electrical Conductivity (EC), Water Holding Capacity (WHC), Bacterial Count (BC) and the quality of compost were analyzed through the process. The results of this research showed that the compost were well done in about 10 days and the best degradation during the 40 days of composting was obtained in which value of MC, pH, C, N, C/N ratio, EC, WHC and BC were 79,14%; 8,1; 25,16%;1,20%; 20,97; 4,725 dS/m; 60% and 107 CFU/ml, respectively.
PEMBUATAN ADSORBEN DARI CANGKANG KERANG BULU YANG DIAKTIVASI SECARA TERMAL SEBAGAI PENGADSORPSI FENOL Jeffry Haryadi Nasution, Iriany
Jurnal Teknik Kimia USU Vol 4, No 4 (2015)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (400.009 KB) | DOI: 10.32734/jutek.v4i4.12031

Abstract

Fur shells adsorbent can be used to adsorp phenol. Adsorption capability of the adsorbent can be enchanced by thermally activation process. The purpose of this research is to study the effect of activation temperature on the characteristics of fur shells adsorbent. Materials that used in this research are fur shells and phenol solution. Observed variables are surface area of adsorbent, density of adsorbent, moisture and fly ash content of adsorbent, and residual concentration of phenol. The research is started by heating fur shells at temperature 1100C, 5000C and 8000C in a furnace. The adsorbents obtained are characterized by using BET metode. The adsorption capability of adsorbents are analized by phenol solution. The residual concentration of phenol is measured with Spectrophotometer UV-Vis. The results show that surface area of adsorbent, moisture and fly ash content have fulfilled National Standard of Indonesia (SNI). The phenol adsorption behaviour follows Langmuir Isoterm.
APLIKASI ELEKTROKOAGULASI DALAM PENGOLAHAN LIMBAH CAIR PABRIK KELAPA SAWIT Farida Hanum, Rondang Tambun, M. Yusuf Ritonga, William Wardhana Kasim
Jurnal Teknik Kimia USU Vol 4, No 4 (2015)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (241.885 KB) | DOI: 10.32734/jutek.v4i4.12032

Abstract

The production of crude palm oil (CPO) in Indonesia is keep increasing that make the amount of wastewater generated. Technology of anaerobic fixed bed (RANUT) have been developed, but the characteristic of the wastewater effluent of RANUT has not meet the quality standard that required by the goverment especially for COD. Because of that need to make a furhter research about the treatment of palm oil mill from the fixed bed reactor (RANUT) with electrocoagulation technique. Electrocoagulation is a process of coagulation by using a direct current through an electrochemical events are symptoms of electrolyte decomposition. This study aims to determine the effect of voltage on the adapter parameters on the performance of the electrocoagulation system and determine the best time for treatment of palm oil mill effluent. Type of electrode material used is aluminum, waste retention time 1 hour, 5 cm distance between the electrodes, a strong current of 5 amperes, voltage variations adapter 3, 4, and 5 volts. The results showed that the best results are obtained at a voltage of 5 volts for COD removal 81.32% with a value 233.5 mg/l at 180 minutes of processing time, it indicates that the processed waste has met quality standards for mill effluent COD is 350 mg/l. The highest turbidity removal percentage is obtained at a voltage of 5 volts and at a time of 180 minutes with the acquisition of 95.08%.

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