Fish is a food material that has high protein content, which cause fast decay by microorganism. Because of that, it needs a preservation process. One of preservative material used is formaline. Formaline is a chemical ...

The study aims to biosynthesis of silver nanoparticles using extract of Zingiber officinale rhizome. This methode was performed by reducing AgNO3 at room temperature in 45 hours with secondary metabolites of extract rhizomes. ...

The effect of burnt on structure and component (calsium, magnesium, sulphate and total C/N) in peat swamp soil was investigated in the Pakning Asal of Bengkalis. The analysis were conducted on the burnt and unburnt soil ...

In recent years, adsorption is one of the most successful approaches that has been utilized to efficiently remove dyes from industrial wastewater among numerous physical and chemical wastewater treatment technologies. ...

The laundry industries increases water pollution in the form of phosphates which is the main substance in detergents. The high phosphate content can lead to eutrophication. The processing waste that is practical and ...

Clay is composed of (AlO4)5- octahedral and (SiO4)4- tetrahedral with water molecules moving freely in their cavities. Metal ions, usually alkaline earth metals (Na, K, Mg, Ca, and Fe) fill the cavity. Due to its chemical ...

Bioactive chemicals in Rhizopora mucronata barks can be exploited in the production of silver nanoparticles. This research aims to ultilize aqueous Rhizopora mucronata bark extract in the preparation of silver nanoparticles, ...

Composite is a combination of several materials with different properties and types so that it was formed material with new properties. In this study, natural rubber latex, activated charcoal of peanut shells were activated ...

The aim of this research was to determine the potential waste of snakefruit shell as adsorbent which carbonized at 600oC for ±2 hours using Na2CO3 5.0% as the activated agent. The adsorbent was characterized by moisture ...

In this study, the activator used to activate the avocado seed powder was HCl with variation concentration of 2.5, 5.0, and 7.5%. The result of characterization indicated that the powder avocado seed which activated by HCl ...