Efficacy of vermicomposting for recycling organic portion of hospital wastes using Eisenia fetida: standardization of cow manure proportion to increase enzymatic activities and fungal biomass |
| |
Authors: | Prabhat Pramanik Young Ryun Chung |
| |
Affiliation: | (1) MGM VISION Laboratories Pvt. Ltd, C-122 (HIG), Orissa Housing Board Colony, Baramunda, Bhubaneswar, Orissa, 751003, India;(2) Molecular Microbial Ecology Laboratory, Division of Applied Life Sciences (BK21), Gyeongsang National University, 900 Gazwa, Jinju, 660-701, Republic of Korea |
| |
Abstract: | Hospital wastes are infectious wastes generated in hospitals and need to be disposed in such a way that they do not spread disease. In this experiment, 5, 10, 15 and 20% cow manure (CM) were mixed with hospital wastes (HW), and mixed wastes were subjected to vermicomposting. In control treatment, only HW was used for vermicomposting. Results suggested that significantly (P ≤ 0.05) higher total nitrogen content was recorded in vermicomposts when 10% or more CM was added to HW. Higher mineralization rate (decrease in C/N ratio) and cellulase activity is probably responsible for rapid organic matter decomposition (loss of total organic carbon). Ergosterol content i.e., total fungal biomass and cellulolytic fungal population were almost constant initially, but increased in the latter stage of vermicomposting. All the vermicompost samples, prepared in this experiment, showed the absence of coliform bacteria. Therefore, it could be concluded that 10% CM addition with HW was the most economical to obtain best quality vermicompost in terms of nutrient content and microbial status. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|