Understanding the microbial community structure and genetic potential of anode biofilms is key to improve extracellular electron transfers in microbial fuel cells. We investigated effect of substrate and temporal dynamics of anodic biofilm communities using phylogenetic and metagenomic approaches in parallel with electrochemical characterizations. The startup non-steady state anodic bacterial s...

Due to complex composition of leachate, the comprehensive leachate treatment methods have been not demonstrated. Moreover, the improper management of leachate can lead to many environmental problems. The aim of this study was application of Fenton process for decreasing the major pollutants of landfill leachate on Kermanshah city. The leachate was collected from Kermanshah landfill site and tre...

Leachate pollution is one of the main problems in landfilling. Among the most problematic parameters in stabilized leachate are COD, ammonia, and color. The treatment technology that can be used may differ based on the type of leachate produced. Even after treatment, the effluent characteristics are always hard to comply with the discharge standard. Ozonation is one of the chemical processes th...

up flow anaerobic sludge blanket (uasb) treatment has proved its efficiency among other treatment methods especially for hardly degradable wastewaters such as industrial wastewaters and leachate. uasb is a widely used reactor with a resistance biomass. waste landfills' leachate is one of the most polluted wastewaters which cause great concerns due to landfill implementations for municipal ...

A common failure mode for landfills is clogging of the leachate collection system. Based on the studies of clogging about landfill leachate collection system, the influence factors about clog were comprehensively and systematically analyzed .The results show that calcium is the dominant mineral of the dry mass of clog material, and CaCO3 is the main component of the clog. The growth of biomass,...

The large number of municipal solid waste (MSW) landfills and the many hazardous materials which they contain pose a serious threat to both surrounding environment and human populations. Once waste is deposited at the landfill, pollution can arise from the percolation of leachate to the porous ground surface. Contamination of groundwater by such leachate renders it and the associated aquifer un...

Information about the response of poplar (Populus spp.) genotypes to landfill leachate irrigation is needed, along with efficient methods for choosing genotypes based on leachate composition. Poplar clones were irrigated during three cycles of phyto-recurrent selection to test whether genotypes responded differently to leachate and water, and to test whether the methodology had merit as a tool ...

Adsorbable organic halides (AOX) and AOX formation potential (AOXFP) were investigated in 46 landfill lea-chates as potentially toxic parameters. AOX in landfill leachate was within the range <10–2200 mg Cl/l, and AOXFP was within 51–15 000 mg Cl/l. AOX and AOXFP correlated with chemical oxygen demand (COD).AOX discharge from closed landfills was generally lower than that from operating landfil...

This study investigated the immunotoxic potentials of raw and simulated leachates from Olushosun municipal solid waste landfill in rat using quantitative leucocyte and differential counts. Blood samples of rats intraperitoneally exposed to 1 – 25 % concentrations of each of the leachate samples for 48 hours were examined post treatment for leukocyte and differential counts. Compared to the nega...

Problem Statement: Sanitary landfilling is the most common way to eliminate solid urban wastes. An important problem associated to landfills is the production of leachates. This study is a review of landfill leachate treatments. Approach: The advantages and disadvantages of the various existing leachate treatments discussed under the items: (i) Leachate channeling (combined treatment with domes...