More PVC Pipe Glue Discussion
I would like to comment on the ongoing pipe glue discussion from your November 2011 column. Users concerned about caustic service could look for what one manufacturer calls “industrial PVC cement” which is made without the fumed silica thickener. For small jobs, I have found that some cements available at home improvement stores do not list colloidal or fumed silica, so consumer protection being what it is, I think it’s a fair bet that those products don’t contain any silica.
Q. I would like to comment on the ongoing pipe glue discussion from your November 2011 column. Users concerned about caustic service could look for what one manufacturer calls “industrial PVC cement” which is made without the fumed silica thickener. For small jobs, I have found that some cements available at home improvement stores do not list colloidal or fumed silica, so consumer protection being what it is, I think it’s a fair bet that those products don’t contain any silica. D.L.
A. My only caution regarding purchasing PVC and/or CPVC glues that do not specifically state they are for caustic/hypochlorite use and do not list silica is to test them on several joints to make sure they do not leak before using them throughout the piping system.
Related Content
-
Explore Cleaning Chemistry, Metal Finishing Applications and Wastewater Treatment Solutions
Hubbard-Hall Celebrating 175 years of excellence, Hubbard-Hall presents chemistry and equipment.
-
NASF/AESF Foundation Research Project #122: Electrochemical Approaches to Treatment of PFAS in Plating Wastewater - 6th Quarterly Report
The NASF-AESF Foundation Research Board has selected a project on addressing the problem of PFAS and related chemicals in plating wastewater streams, studying PFAS destruction via electrooxidation and electrocoagulation. This sixth quarter report covers the continued assessment of eight perfluoroalkyl acids PFAAs most commonly found in wastewaters, by electro-oxidation with a Magnéli phase Ti4O7 anode across a range of anodic potentials in solutions, exploring the reaction mechanisms. To summarize, the PFAAs start to exhibit degradation behavior when the anodic potential reaches a level where water oxidation occurs, suggesting that the hydroxyl free radicals generated via water oxidation play a role in PFAA degradation.
-
Ultrafiltration Membranes, Filter Elements for Improved Industrial Water Reuse
Ultrafiltration membranes help with water reuse in a variety of applications.
