Quantification and comparison of the dewatering characteristics of fifteen sewage sludges from a range of digestion scenarios are described. The method proposed uses laboratory dewatering measurements and integrity analysis of the extracted material properties. These properties were used as inputs into a model of filtration, the output of which provides the dewatering comparison. This method is shown to be necessary for quantification and comparison of dewaterability as the permeability and compressibility of the sludges varies by up to ten orders of magnitude in the range of solids concentration of interest to industry. This causes a high sensitivity of the dewaterability comparison to the starting concentration of laboratory tests, thus simple dewaterability comparison based on parameters such as the specific resistance to filtration is difficult. The new approach is demonstrated to be robust relative to traditional methods such as specific resistance to filtration analysis and has an in-built integrity check. Comparison of the quantified dewaterability of the fifteen sludges to the relative volatile solids content showed a very strong correlation in the volatile solids range from 40 to 80%. The data indicate that the volatile solids parameter is a strong indicator of the dewatering behaviour of sewage sludges.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.watres.2015.04.045 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Highly Efficient Compositional and Compound Specific Isotopic Analysis of Volatile Primary Amines and Ammonia in the Murchison Meteorite Using SPME On-Fiber Derivatization: Optimization for Bennu Sample Analyses.
Rapid Commun Mass Spectrom
April 2025
Solar System Exploration Division, NASA Goddard Space Center, Greenbelt, Maryland, USA.
Rationale: Extraterrestrial amines and ammonia are critical ingredients for the formation of astrobiologically important compounds such as amino acids and nucleobases. However, conventional methods for analyzing the composition and isotopic ratios of volatile amines suffer from lengthy derivatization and purification procedures, high sample mass consumption, and chromatographic interferences from derivatization reagents and non-target compounds.
Methods: Here we demonstrate a highly efficient method to analyze the composition and compound specific isotopic ratios of C to C amines as well as ammonia based on solid phase micro-extraction (SPME) on-fiber derivatization.
Microbial community of Nongxiangxing daqu during storage: microbial succession, assembly mechanisms and metabolic functions.
J Sci Food Agric
January 2025
College of Biomass Science and Engineering, Sichuan University, Chengdu, China.
Background: The storage process of Nongxiangxing daqu is closely related to the quality of the daqu. The role of storage in daqu manufacture remains unclear, and most actual production relies on previous production experience.
Results: With the extension of daqu storage over a period of time, saccharifying activity, liquefying activity, fermenting activity, and esterifying activity reached a peak when stored for 3 to 4 months.
Effects of Sodium Sources on Nonaqueous Precipitation Synthesis of β″-AlO and Formation Mechanism of Uniform Ionic Channels.
Langmuir
January 2025
Jiangxi Key Laboratory of Advanced Ceramic Materials, Jingdezhen 333000, China.
High-temperature and long-term sintering of β″-AlO solid electrolyte (Beta″ Alumina Solid Electrolyte, BASE) can easily cause NaO volatilization. It reduces the solid electrolyte (SE) quality, resulting in low ion conductivity of the electrolyte. It is also difficult to form uniform ionic channels.
View Article and Find Full Text PDFConstruction of Luminescent Three-Dimensional Covalent Organic Frameworks for Molecular Decoding of Wide Organic Compounds.
Chem Asian J
January 2025
Qingdao University of Science and Technology, College of Polymer Science and Engineering, 53 ZHENGZHOU ROAD, 266000, Qingdao, CHINA.
Constructing highly conjugated three-dimensional covalent organic frameworks (3D COFs), particularly those with luminescent features, remains a significant challenge. In this work, we successfully synthesized a 3D COF, named 3D-Py-SP-COF, using a rigid and orthogonal spirobifluorene building block for the spatial 3D structure construction and planar pyrene as luminescent units. The incorporation of the pyrene and the unique rigid 3D network structure endow 3D-Py-SP-COF with fluorescent properties.
View Article and Find Full Text PDFComputationally efficient machine-learned model for GST phase change materials via direct and indirect learning.
J Chem Phys
January 2025
Department of Physics, Wesleyan University, Middletown, Connecticut 06459, USA.
Phase change materials such as Ge2Sb2Te5 (GST) are ideal candidates for next-generation, non-volatile, solid-state memory due to the ability to retain binary data in the amorphous and crystal phases and rapidly transition between these phases to write/erase information. Thus, there is wide interest in using molecular modeling to study GST. Recently, a Gaussian Approximation Potential (GAP) was trained for GST to reproduce Density Functional Theory (DFT) energies and forces at a fraction of the computational cost [Zhou et al.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!