Humic substances and humification rate in a municipal refuse disposed of in a landfill

Abstract

To observe the rate of degradation of refuse and to assess the rate of pollution below a landfill, the concentration of total C, volatile content, COD, humified C, humic acids (HA) and fulvic acids (FA) in solid waste samples were analyzed. The samples were obtained by field drilling at increasing depths. The volatile content, organic C and COD decreased with the depth of the refuse and their variability was related to the decomposition processes of refuse. High coefficient of determination (F) values indicated a positive relationship between the results of total C, humified C, HA and FA. The concentration of organic substances in the soil below the landfill is lower than in the soil outside the landfill site.

Investigation on Stabilization of Municipal Waste in Dumping Sites in Northeast Cold Regions Using Simulation Tests

“…the composition and yield of landfill gas, the water quantity and quality of leachate, the composition of solid waste and the variation of surface subsidence. There are many reports about the rule of various components in the course of stabilization of refuse landfill [2,3,4,5]. Regarding to leachate, most investigations focus on the harmfulness and treatment technologies of leachate [6,7,8], as well as recirculation of landfill leachate [9,10,11,12].…”

Investigation on Degradation Behavior of Domestic Waste of Dump Sites

“…There were many reports on the degradation of the MSW in the landfill stabilization process at home and abroad [3][4][5][6]. However, the reports on the environmental behavior of simple dumps left over by history were few.…”

Recovery of humic substances from landfill leachate via 2500 Da ultrafiltration membrane

“…HS are naturally occurring mixtures of organic compounds that play an important role in both pollutant chemistry and biogeochemistry of natural waters and soils [9]. The chemical composition, structure, and characteristics of HS from landfill solid and leachate have been investigated by many researchers [10][11][12]. Chemical features of HS provide the potential to utilize HS as an agent for fertilization [2] and/or pollution remediation [13].…”