Bioplastic production from wastewater sludge and application

Abstract

Abstract Plastic is considered as one of the most useful materials in the world. Plastic products are utilized in almost any field such as industry, manufacturing, agriculture, and service. Although plastic products can meet the needs of human beings, they also cause environmental problems such as white pollution. The current utilized plastic is non-biodegraded. It suggests that they would remain in long time in the environment when they are Activated sludge (sludge is called for short) is generated during the wastewater treatment process in large quantity. Its management gradually becomes a great problem. The problem of difficult recycling of plastic waste has attracted more and more attention. Recycling technology is an effective but incomplete measure to address these environmental issues. Based on this, bioplastics can solve this problem as a new material. Studies have found that high temperature lysates of sludge can be used to produce biodegradable plastic poly-3-hydroxybutyrate (PHB). And acetic acid produced by the anaerobic fermentation sludge thermal cracking solution can replace glucose as a carbon source to support the growth of microorganisms. In this way, the use of sludge thermal cracking fluid to produce bioplastic PHB can be achieved. In this paper, the development of bioplastics is introduced in the context of understanding the development of bioplastics. This paper also introduces the various types of bioplastics widely used at present, discusses the principle of producing bioplastics from activated sludge, and prospects the application prospects of bioplastics.