The objective of this research is to create a low cost material with high heavy metal removal capacity. Our study focuses on preparing a composit which can remove lead from wastewater of battery recycle villages of Vietnam, based on treated fly ash (TFA) and polyurethane (PU) foam. Fly ash after treating by thermal and NaOH has the surface area of m2/g which leads to its high adsorption capacity, monolayer adsorption capactity = 3gPb/g. The preparation of PU foam and treated fly ash (TFA) process was conducted by mixing TFA and PU foam then treated withthermal. | BÀI BÁO KHOA HỌC REMOVAL LEAD FROM WASTE WATER IN BATTERY RECYCLE VILLAGE OF VIET NAM BY LOW COST ADSORBENT CREATED FROM TREATED FY ASH AND POLYURETHANE FOAM Pham Thi Hong1 , Nguyen Duc Long1, Bui Thi Mai Huong1, Do Thuan An1 Abstract: The objective of this research is to create a low cost material with high heavy metal removal capacity. Our study focuses on preparing a composit which can remove lead from wastewater of battery recycle villages of Vietnam, based on treated fly ash (TFA) and polyurethane (PU) foam. Fly ash after treating by thermal and NaOH has the surface area of m2/g which leads to its high adsorption capacity, monolayer adsorption capactity = 3gPb/g. The preparation of PU foam and treated fly ash (TFA) process was conducted by mixing TFA and PU foam then treated withthermal. The TFA supported PU can increase the absorption capacty of PU. The PU/TFA composit was performed its removal of 87% lead in wastewater of batery recycle village. In this research, we successfully created a low cost adsorbent that can be used in recycle villages in Vietnam where heavy metal contaminated wastewater has not been treated properly. Keywords: Battery recycle village, low cost adsorbent, material removal, polyurethane foam, treated fly ash. 1. INTRODUCTION1 Heavy metal contamination in wastewater has become widespread and hard to be solved due to the poor management and treatment of waste water in metal recycle villages in Viet Nam. In Dong Mai village, Van Lam, Hung Yen, there are 269 of 570 households doing metal recyle from disposed batteries. Untreated water is released directly to water bodies that affects to environment and peoples health. There were 283 adults and 335 children in village were being poisoned by lead in blood (NASP). Up to now, the common methods for heavy metals removal are advanced like cation exchange, ion exchange, membrane filtration, and carbon adsorption. However, these methods have not been widely applied at large scale because .
