AI Article Synopsis
- The research focused on scaling up a hollow-fiber-membrane (HFM) bioreactor to treat water contaminated with trichloroethylene (TCE) using the methanotroph Methylosinus trichosporium OB3b PP358.
- Cost analyses indicated that the most efficient setup involved two HFM modules in series, achieving an annual treatment cost of $0.36 per cubic meter for treating 568 L/min of water with a TCE concentration of 100 µg/L.
- New measurements for specific transformation rates showed sustainable TCE treatment levels of up to 38.5 µg TCE/mg total suspended solids, and mathematical modeling helped develop a five-step strategy for designing the biore
Article Abstract
Scale-up of a hollow-fiber-membrane (HFM) bioreactor treating trichloroethylene- (TCE-) contaminated water via co-metabolism with the methanotroph Methylosinus trichosporium OB3b PP358 was investigated through cost comparisons, bioreactor experiments, and mathematical modeling. Cost comparisons, based on a hypothetical treatment scenario of 568-L/min (150-gpm) flowrate with an influent TCE concentration of 100 microg/L, resulted in a configuration of treatment trains with two HFM modules in series and an overall annual cost of US dollar 0.36/m3 treated. Biological experiments were conducted with short lumen and shell residence times, 0.16 and 0.40 min, respectively, as a result of the cost comparisons. A new variable, specific transformation, was defined for characterizing the cometabolic transformation in continuous-flow systems, and values as large as 38.5 microg TCE/mg total suspended solids were sustainable for TCE treatment. Using mathematical modeling, HFM bioreactor system design was investigated, resulting in a five-step system design strategy to facilitate sizing of the unit processes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.2175/106143005x67458 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Statistical optimization of pectinases from thermophilic Aspergillus fumigatus BT-4 employing response surface methodology through submerged fermentation using agricultural wastes.
BMC Biotechnol
January 2025
School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, China.
Background: In this study, thermophilic pectinase-producing strains were isolated. Among all the isolates, strain No. 4 was identified as Aspergillus fumigatus BT-4 based on its morphology and 18 S rDNA analysis.
View Article and Find Full Text PDFEconomic burden of Type 2 diabetes in Iran in 2022.
BMC Public Health
January 2025
Department of Health Management, Policy & Economics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Background: Diabetes mellitus, particularly Type 2 diabetes (T2D), represents a significant global health challenge, with its prevalence steadily rising over the past few decades. This study was conducted with the aim of estimating the economic burden of T2D in Iran.
Methods: This study employed a prevalence-based approach to estimate the economic burden of T2D and its attributable complications in adults above 20 years old in Iran for 2022.
Trends in costs of routinely recommended vaccines in the United States, 2001-2023.
Vaccine
January 2025
National Center for HIV, Viral Hepatitis, STD, and TB Prevention, CDC, USA.
Objectives: Economic models assessing vaccinations commonly assume that inflation-adjusted vaccine costs are constant over time. This study assessed this assumption using historical vaccine cost data.
Methods: Private sector and CDC contracted vaccine cost data (2001-2023) were collected from the CDC Vaccine Price List and converted to US$2023 to adjust for inflation.
Costs of Oral Corticosteroid Use in Patients with Severe Asthma With/Without Chronic Rhinosinusitis with Nasal Polyps: Data from the Italian SANI Registry.
Adv Ther
January 2025
Personalized Medicine, Asthma and Allergy, IRCCS Humanitas Clinical and Research Hospital, Via Alessandro Manzoni 56, 20089, Rozzano, MI, Italy.
Introduction: The burden of severe asthma on patients, especially on those with concomitant chronic rhinosinusitis with nasal polyps (CRSwNP), is substantial. Treatment intensification with oral corticosteroids is a common strategy for managing severe asthma exacerbations; however, prolonged exposure to systemic corticosteroids is associated with multisystem toxicity. This study aimed to quantify the association between oral corticosteroid use and annual asthma-related costs in patients with severe asthma with or without CRSwNP.
View Article and Find Full Text PDFExamination of Methods to Estimate Productivity Losses in an Economic Evaluation: Using Foodborne Illness as a Case Study.
Pharmacoeconomics
January 2025
Centre for Health Economics Research and Evaluation, University of Technology Sydney, PO Box 123, Broadway, NSW, 2007, Australia.
Background: Cost-utility analyses commonly use two primary methods to value productivity: the human capital approach (HCA) and the friction cost approach (FCA). Another less frequently used method is the willingness-to-pay (WTP) approach, which estimates the monetary value individuals assign to avoiding an illness. In the context of foodborne illnesses (FBI), productivity loss represents one of the most significant economic impacts, particularly in developed nations.
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!