Studi pembuatan cat tembok emulsi menggunakan bahan pengisi kapur sangat potensial untuk dikembangkan karena ketersediaan kapur yang banyak di alam. Cat tembok emulsi telah dibuat dari campuran bahan pengisi, bahan pengikat, pigmen, pelarut, dan…
A comparative study of Model Predictive Control (MPC) using active-set method and interior point methods is proposed as a control technique for highly non-linear pH process. The process is a strong acid-strong base system. A strong acid of…
The loading of gold using strong base anion exchange resin in non-ammoniac resin-solution (NARS) systems has been studied. The loading of gold onto ion exchange resins is affected by polythionate concentration, and trithionate can be used as the…
Dumping grounds are characterized by the absence of engineering controls such as base liners and cover layer. Consequently, these dumping grounds present risks for surrounding resources such as soil, groundwater and air. The concern for groundwater…
Industri kecil minyak nilam di Nanggroe Aceh Darussalam tersebar di beberapa kabupaten yaitu Aceh Barat, Aceh Selatan, Aceh Jaya, dan beberapa daerah lainnya. Namun perolehan dan mutu minyak nilam yang dihasilkan masih tergolong rendah karena warna…
One of the alternative utilization of pineapple peel waste is to convert them to lactate acid via fermentation. This research is aimed to obtain better understanding on the growth of lactate bacteria (Lactobacillus plantarum) by varying substrate…
The effect of engine loading on emission of particulate matter was studied by using an Otto engine (Honda astrea grand 110 cc). In the experiment, the characteristics of loading engine, fuel consumption and composition of particulate matter were…
Khitosan adalah produk yang dapat diasetilasi dari khitin, dan banyak terdapat di alam. Khitin diisolasi dari limbah kulit udang yang merupakan polimer alam yang mempunyai struktur mirip dengan selulosa. Khitosan ini bersifat hidrofilik dan…
Citric acid can be produced from pineapple waste by using fermentation process. This process is done in bubble column reactor with Aspergillus niger yeast. The objective of this research is to find the optimum conditions of initial pH and total sugar…
The ability to produce potable water economically is the primary purpose of seawater desalination research. Reverse osmosis (RO) and multi-stage flash (MSF) cost more than potable water produced from fresh water resources. Therefore, this research…