Wetland soils are heterogenous in nature, and biogeochemical properties show different spatial autocorrelation structures that translate into fineand coarse-scale spatial patterns. Understanding these patterns and how they relate to other ecosystem properties (e.g., vegetation) is critical to restore wetlands impacted by nutrient influx. Our goal was to investigate Water Conservation Area 2A, a...

ion of the floc and simplifying hypothesis Next we will develop a 2D model of the floc, using some simplifying hypothesis. Our model is hybrid, since it uses concepts from individual based models, as developed by Delft school, together with classical ones. Based on experimental evidences, collected with FISH based techniques, we assume that the developing floc will have the generic dimensions L...

We present a fast local clustering service, FLOC, that produces nonoverlapping and approximately equal-sized clusters. The clustering is such that all nodes within unit distance of a clusterhead belongs to its cluster, and no node m units away from the clusterhead may belong to its cluster. By asserting m ≥ 2 FLOC achieves locality: effects of cluster formation and faults/changes at any part of...

In order to observe the impact of different water compositions on sludge dewaterability, assessments of floc sizes using a particle size analyzer and of sludge dewaterability based on the capillary suction time (CST) test were carried out. Synthetic raw water had small floc sizes, and synthetic domestic wastewater had both larger median floc sizes and a better correlation between sludge dewater...

We analyzed Hg species distribution patterns among ecosystem compartments in the Everglades at the landscape level in order to explore the implications of Hg distribution for Hg bioaccumulation and to investigate major biogeochemical processes that are pertinent to the observed Hg distribution patterns. At an Everglade-wide scale, THg concentrations were significantly increased in the following...

As the number of legal and illegal gold mining sites increases in Andes–Amazonia region, integrative methods to evaluate effects pollution on freshwater ecosystems are paramount importance. Here, we sampled water sediments 11 potentially affected by activities Napo province (Ecuador). The environmental impacts were evaluated using following lines evidence (LOEs): physicochemical parameters, met...

The bacterium strain No. 12 isolated from a phenol-adapted activated sludge as a floc-forming bacterium was found to produce an exoenzyme which could deflocculate its own floc. As the floc of this bacterium was not deflocculated with EDTA and various enzymes such as cellulase, protease, and lysozyme, this exoenzyme was isolated and purified. The optimal pH of the enzyme for deflocculation was 3...

Polymerized inorganic coagulants are increasingly being used in the water supply and wastewater treatment process, yet there is limited research on the development of polytitanium coagulants. The aim of this study is to synthesize polytitanium chloride (PTC) coagulants and investigate their coagulation behavior and floc characteristics for humic acid removal in comparison to polyaluminum chlori...