Refine by
Testing Sediment Articles & Analysis
77 articles found
Bailey's Creek Pilot Study In 2009, the first commercially-produced SediMite pellets were applied to a small test plot of PCB-impacted sediments of Bailey's Creek, a brackish intertidal salt marsh system. ...
SediMite was applied in two locations of Canal Creek, Aberdeen Proving Ground as part of an ESTCP-funded field pilot study to test the efficacy of activated carbon in remediating sediments in-situ. ...
On the other side, the Egaa sewage plant also plans to achieve an energy surplus, where they test carbon capture, mainstream anaerobic ammonia oxidation, ORC waste gas energy recovery and other processes, and investigate the feasibility of using these technologies in future sewage plants. ...
Abstract This study consisted of primary research to further understand the relationship between sludge at the bottom of lagoons and nutrient levels and TSS within the water column and at the surface level. Additionally, the research shed further light on the relationship between bacterial populations within the sludge and water quality in lagoons. Aquafix developed an experimental ...
The test battery covered several phylogenenic groups and included acute or short-term chronic tests on the sediments’ porewater with bacteria (Vibrio fischeri), algae (Raphidocelis subcapitata), crustaceans (Thamnocephalus platyurus andDaphnia magna) and fish (Clarias gariepinus). Whole sediment tests ...
An FISST (Fuel Injection Shear Stability Test) was conducted on EnBio MP46 according to American Society for Testing Materials (ASTM) standard D 3945. ...
In the case of the DL membrane, it was found that, under tested solutions, the layer of mineral scale formed on the surface gradually decreases the membrane permeability coefficient. ...
Water along roughly 4,000 kilometers (about 2,500 miles) of China’s coastline was surveyed and 90 sediment samples were taken. Scientists found that estuaries generally had levels of antibiotic resistance gene pollution of about 1 million resistance genes per gram of estuarine sediment. ...
This study focuses on detecting trends in annual runoff volume and sediment load in the Yangtze river-lake system. Times series of annual runoff volume and sediment load at 19 hydrological gauging stations for the period 1956–2013 were collected. Based on the Mann-Kendall test at the 1% significance level, annual sediment ...
The hysteresis curve of the composite Mn3O4/Fe3O4 has changed when compared to the pure magnetite; however, the coercive field after the addition of manganese oxide remains unaltered and does not change with a value around 158 Oe. The turbidity tests showed that the magnetic sedimentation was efficient and promising for wastewater treatment in large scale. ...
Specifically, Fe-poor sediments and polymixis interact to cause episodic releases of highly bioavailable phosphorus (P) from sediments, lowering nitrogen-to-phosphorus (N : P) ratios in the euphotic zone, and stimulating the proliferation of harmful cyanobacteria. Below, we provide our rationale for each component of this hypothesis. First, Fe-poor ...
In this paper, we developed a method for P extraction from agricultural soil and suspended sediment by combining ultrasonic treatment with extraction by 0.1 molL−1 NaOH solution. ...
Standardized bioaccumulation testing of aquatic organisms is essential to understanding the impact of historical contamination on the quality of water and sediment. ...
Sediment TIEs are conducted to determine causes of adverse effects observed in whole sediment toxicity tests. ...
Environment Canada has developed a new 42 day sediment toxicity test method that includes a reproduction test endpoint with the freshwater amphipod Hyalella azteca. Due to concerns that existing standard methodologies, where adults are transferred to a water‐only exposure before release of their first brood at day 28, will lead to internal ...
Studies have been conducted to refine USEPA, ASTM, and Environment Canada standard methods for conducting 42‐d reproduction tests with H. azteca in water or in sediment. Modifications to the H. azteca method include better defined ionic composition requirements for exposure water (i.e., >15 mg/L of chloride and >0.02 mg/L of bromide) and improved survival, ...
A simplified test approach was developed to assess the fate of chemicals in aerobic sediments and was used to evaluate the biodegradation of 14C‐labeled representative analogs of alcohol sulfate (AS), alcohol ethoxylate (AE), alcohol ethoxy sulfate (AES), linear alkylbenzene sulfonate (LAS) and tetradecanol in two different sediments. ...
While standardized sediment toxicity testing methods have been developed for the amphipod Hyalella azteca, no standardized chronic water‐only toxicity testing methods have been established. Furthermore, optimal feeding and water quality conditions for culturing and toxicity testing with this species remained unclear. Our ...
One conclusion is that the new linearly implicit method is easier to implement than another one (semi-implicit method), but less efficient based on two types of batch sedimentation tests. ...
To assess nickel (Ni) toxicity and behavior in freshwater sediments, a large‐scale laboratory and field sediment testing program was conducted. ...