C8 Phased Out of Food Wrappers In July 2012 the U.S. FDA released a statement that manufacturers had voluntarily ceased selling agents containing the compound C8 for food-contact use the prior summer. At that time, manufacturers had predicted stocks of the agents and packaging containing them would be depleted within a year. C8, or perfluorooctanoic acid, was used to keep oil and grease from se...

Case Report A motor cycle mechanic aged 39 years sustained an injury to the inner corner of the left eye with a jet of oil from a grease-gun. In spite of considerable bruising of the lids and conjunctiva, discomfort in the eye was minimal, so he was not referred to Moorfields until 4 days after the accident. Examination.-The right eye was found to be normal and the visual acuity 6/6 unaided. In...

In the wastewater treatment process, floatation unit have been developed to remove particles or flocs that tend be difficult settle, such as fat oil and grease (FOG) total suspended solids (TSS). Flotation is a operation can separate liquid phase solid from phase, this occur due presence of saturated air which mixed so it contains fine bubbles help separated. This research was conducted by trea...

In Amsterdam, over 200 so called inverted siphons are situated. As these siphons are prone for blockages, it is key that these parts of a sewer system are maintained proactively. This article outlines the basis of a methodology that can be used to estimate the fouling degree of sewers with the use of water level measurements. Even though the measurement period appeared to be of restricted lengt...

Mechanical degradation by shear is one of the mechanisms that limits life-time lubricating grease in a rolling bearing. It results change micro-structure thickener–oil system, leading to bleed and consistency. The resistance can be quantified using worker. In this article, novel approach described, where worker used measure rheological properties situ, while aging grease. energy pressure losses...

Support material used in constructed wetlands has been shown to be a key element and significant mechanism in the process of contaminants removal from sewage including phosphorus compounds. Recycled waste tires processed into small chips that are similar to conventional stone aggregate are currently used in the construction of septic system leach fields and could be a green alternative as suppo...

The aim of this research was to study the biodegradation of a polymer derived from castor oil, which is a renewable, natural material that is a practical alternative for the replacement of traditional polyurethane foams. Due to its molecular structure, which contains polyester segments derived from vegetable oil, the polymeric surface is susceptible to microorganism attack. This study tested th...