LONG-TERM PERFORMANCE OF PERMEABLE REACTIVE BARRIERS: LESSONS LEARNED ON DESIGN, CONTAMINANT TREATMENT, LONGEVITY, PERFORMANCE MONITORING AND COST - AN OVERVIEW

2007 ◽  
pp. 221-229 ◽  
Author(s):  
Robert W. Puls
Keyword(s):  
Performance Monitoring ◽  
Lessons Learned ◽  
Permeable Reactive Barriers ◽  
Reactive Barriers ◽  
Long Term Performance ◽  
Term Performance

scholarly journals Experimental and Numerical Examination of Naturally-Aged Foam-VIP Composites

Energies ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2539 ◽  
Author(s):  
Kaushik Biswas ◽  
Rohit Jogineedi ◽  
Andre Desjarlais
Keyword(s):  
Performance Monitoring ◽  
Numerical Models ◽  
Test Facility ◽  
Exposure Test ◽  
Rigid Foam ◽  
Study Results ◽  
Long Term Performance ◽  
Term Performance ◽  
Thermal Conductivities

This article describes an aging study of a foam-vacuum insulation panel (VIP) composite insulation board installed on a test wall in a natural exposure test facility through a 30-month period. Silica-based VIPs with a polymeric barrier film were used in this study. The study results showed the effectiveness of a VIP-based insulation to reduce the heat gains and losses through a wall compared to regular rigid foam insulation of the same thickness. However, the long-term performance monitoring indicated a gradual decline in the thermal performance of the foam-VIP composite. In addition, one-dimensional numerical models were created to simulate the in situ behavior of the foam-VIP composite. One model utilized constant thermal conductivities of the test wall components and another utilized temperature-dependent thermal conductivities; the latter used measurements of conductivity over temperatures ranging from −15 to 55 °C. The results of the simulations emphasized the need to use both temperature and time-dependent material properties for accurately predicting the long-term performance of VIP-based insulation systems.

scholarly journals Role of Microorganisms in Permeable Reactive Bio-Barriers (PRBBs) for Environmental Clean-Up: A Review

2018 ◽  
Vol 20 (2) ◽  
pp. 269-280 ◽  
Keyword(s):  
Environmental Remediation ◽  
Gradient Flow ◽  
Permeable Reactive Barriers ◽  
Permeable Reactive Barrier ◽  
Innovative Technology ◽  
Reactive Barrier ◽  
Reactive Barriers ◽  
Long Term Performance ◽  
Term Performance ◽  
Reactive Media

It is an indisputable fact that any environmental clean-up technology generating certain kind of effective result would be easily supported. One of them includes Permeable reactive bio-barrier which is an innovative technology started from 90’s to treat a variety of contaminants along the natural gradient flow of groundwater through immobilization or transformation of pollutants into less toxic and harmful form. Despite of any broad acknowledgement, there are lesser known knowledge about use of microorganisms in permeable reactive barriers, mingling of microorganisms with other reactive media and their effect on each other’s reactivity. The current review deals with an overview of the types of reactive media used in Permeable Reactive Barriers (PRBs) as well as different bio-barriers (PRBBs) utilized for the treatment of various contaminants, long–term performance of permeable reactive barrier and combination of microorganism and reactive media to look forward for their symbiotic relationship in permeable reactive barrier for environmental remediation.

Sign in / Sign up

Export Citation Format

Share Document