Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"biosolid"”.
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An Improved Biosolid Gasifier Model
… are limited. Landfills have minimal space for biosolids; countries are now banning ocean disposal methods for fear of the negative environmental impacts. Agricultural application of biosolids cannot keep up with the production rates because of the accumulation of heavy metals in the soils. …
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An assessment of antibiotic resistant bacteria in biosolid used as garden fertilizer
<p>"Fertilizer grade biosolid is sold to the general public by the Cheney Wastewater Treatment Plant for use as garden fertilizer and as a soil conditioner. Moist biosolid samples were obtained from the Cheney Wastewater Treatment Plant and antibiotic resistant gram negative bacteria were isolated …
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Influence of Biosolids upon the uptake of Mn and Cd by Radish (Raphanus sativus L.)
<p>The influence of biosolids upon the uptake of Mn and Cd by radish (<em>Raphanus sativus L</em>.) was investigated through the characterization of biosolids, sequential extraction of the biosolids, and the determination of the metal content in the root, shoot and leaves of radish (<em>Raphanus …
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Detection of per- and polyfluoroalkyl substances in biosolids from wastewater treatment plants
… study, a method was developed to detect PFASs in biosolids using high-performance liquid chromatography (HPLC) system coupled with high-resolution mass spectrometer (HRMS). A solid phase extraction (SPE) procedure was applied to extract the PFAS analytes from biosolid samples collected from two …
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Fate and behaviour of metformin and its transformation product guanylurea in soil-water systems
… relevant pH range between 5.7 and 8.5. Biosolid-amended soils have also resulted in decreased MET sorption while GUA sorption significantly increased. Enrichment cultures demonstrated the capability of soil and sludge microbial communities to degrade MET and GUA to certain extent. In …
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Evaluating the Design and Economics of Commercial-Scale Hydrothermal Carbonization of Biosolids for Energy Generation
… was to design a process to produce energy from biosolid waste using a continuous hydrothermal carbonization reaction and to evaluate the economics of implementing the technology for TMWRF. The hydrothermal carbonization reaction was investigated by conducting batch reactions in the lab and by …
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Anaerobic / Aerobic Digestion for Enhanced Solids and Nitrogen Removal
… health concerns regarding land application of biosolids, digestion processes generating minimized sludge with better effluent characteristics is becoming important for many public and wastewater utilities. This study was designed to investigate the performance of anaerobic-aerobic-anaerobic …
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Analytical Approaches for Analyzing Microplastics Using Pyrolysis Gas Chromatography Mass Spectrometry and Accelerated Solvent Extraction
<p>Wastewater treatment plant (WWTP) biosolids act as major sinks for microplastics, yet robust mass-based quantification of polymer composition in these complex matrices remains analytically challenging. This study applies an integrated accelerated solvent extraction (ASE) and pyrolysis–gas …
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Upgrading biomass by hydrothermal and chemical conditioning
… hydrothermal treatment of sludge (HTS). The HTS biosolid has higher energy value and ash than raw sludge. Moreover, the dewaterability can be increased greatly by treating waste water sludge with subcritical water.
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Fate and effects of pulp mill effluent solids in the soil environment
… treatment solid and three secondary treatment biosolids, were used to investigate their effects on soil organisms and soil functions. An interdisciplinary approach was adopted, which incorporated three main areas of study, as follows: 1. A comprehensive resin extractives analysis of the pulp …
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Sequential Anaerobic-Aerobic Digestion: A new process technology for biosolids product quality improvement
… Noxious odor production from the land applied biosolids is another important issue related to digestion efficiency. Existing anaerobic digestion or aerobic digestion processes failed to provide simultaneous solution to biosolids related problems i.e. simultaneous VS reduction, better dewatering …