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Neutralization and 1,4-dioxane stripping is a critical, combined, continuous process in surfactant manufacturing (e.g., SLES) that neutralizes acidic products (e.g., via NaOH) and removes volatile 1,4-dioxane impurities to levels below 10 ppm using vacuum stripping, steam stripping, or gas purging. Specialized equipment like Weixian’s neutralization-stripping unit or Chemithon's Dioxane Removal System (DRS) allows this, providing improved product color and stability while meeting regulatory standards.
Key Components of the Process
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Web results
Weixian's Neutralization and Dioxane Stripping Process
WEIXIAN (Nanjing) Science Technology co., ltd
https://www.njweixian.com › weixians-neutralization-and...
WEIXIAN (Nanjing) Science Technology co., ltd
https://www.njweixian.com › weixians-neutralization-and...
Mar 8, 2023 — WEI XIAN's neutralization and dioxane stripping unit is to mix reaction material in neutralization reaction pump or mixer fully with 10 ...Read more
Vacuum Neutralization Technology in Surfactants Production
Ballestra S.p.A.
https://www.ballestra.com › ... › Sulphonation Suphation
Ballestra S.p.A.
https://www.ballestra.com › ... › Sulphonation Suphation
Dioxane removal is performed with no need of feeding the system with any extra steam, since dioxane stripping takes place by means of the heat made available by ...Read more
Sulphonation Process- Unit 79 Neutralization & Dioxane ...
YouTube · WEIXIAN NANJING SCIENCE TECHNOLOGY CO.,LTD
760+ views · 2 years ago
YouTube · WEIXIAN NANJING SCIENCE TECHNOLOGY CO.,LTD
760+ views · 2 years ago
This unit can realize ultra-low dioxane content (undetectable level). Sulphonation Process- Unit 79 Neutralization & Dioxane Stripping. 763 ...
DRS Dioxane Removal System
Chemithon Enterprises
https://www.chemithon.com › Proc_drs
Chemithon Enterprises
https://www.chemithon.com › Proc_drs
The DRS is a compact, low energy consumption drying apparatus. It removes volatile components from a detergent slurry under carefully controlled conditions.Read more
Process for removing dioxane from a composition
Google Patents
https://patents.google.com › patent
Google Patents
https://patents.google.com › patent
In principle, it is desirable to neutralize to higher solids (e.g., in a range of 68 wt.% to 85 wt.%), strip dioxane and dry/concentrate the paste, and then ...Read more
Cleaning out a carcinogenic contaminant - ACS Publications
ACS Publications
https://pubs.acs.org › doi › cen-10302-feature2
ACS Publications
https://pubs.acs.org › doi › cen-10302-feature2
Jan 27, 2025 — Both exploit 1,4-dioxane's affinity for water as a lever to remove it. Vacuum stripping is another common choice for surfactant makers.Read more
Scholarly articles for Neutralization and Dioxane Stripping | |
… of 1, 4‐dioxane concentration in cleaning products: A … - Hayes - Cited by 18 … treatment of 1, 4-dioxane using fenton's reagent - Kiker - Cited by 5 … -type photoresists that enable stripped by an alkaline … - Chiang - Cited by 7 | |
Web results
1,4-Dioxane Destruction System
Ballestra S.p.A.
https://www.ballestra.com › ... › Sulphonation Suphation
Ballestra S.p.A.
https://www.ballestra.com › ... › Sulphonation Suphation
Ballestra integrates an effective 1,4-dioxane destruction system using the Advanced Oxidation Process (AOP) ensuring the elimination of organic contaminants ...
Precise measurement of 1,4‐dioxane concentration in ...
AOCS Publications
https://aocs.onlinelibrary.wiley.com › doi › jsde
AOCS Publications
https://aocs.onlinelibrary.wiley.com › doi › jsde
Nov 21, 2022 — Vacuum steam stripping of crude ethoxylated fatty alcohol sulfate can be employed to reduce the 1,4-dioxane level by ~8-fold (1–5 ppm); ...Read more
People also ask
Is it possible to remove 1/4 dioxane from cosmetic formulas?
This can be done by replacing ethoxylated surfactants with bio-based surfactants or by rebalancing primary and secondary surfactant levels to achieve compliance. The good news is we have many ingredient options to explore when reducing 1,4-dioxane or formulating away from it.
1,4-Dioxane-Free Cleaning Formulation Solutions
Univar Solutions
https://www.univarsolutions.com › 1-4-dioxane-free-clea...
Univar Solutions
https://www.univarsolutions.com › 1-4-dioxane-free-clea...
What is the neutralization reaction in wastewater treatment?
After rinsing, the wastewater contains high amounts of acids, and thereby has a low pH value. Before disposing or reusing of the wastewater, it has to be neutralized by addition of base reagents to avoid harming the recipient. The neutralization process is a type of a replacement reaction: Acid + Base → Salt + Water.
Neutralization of Acidic Wastewater from a Steel Plant by Using CaO ...
PMC - NIH
https://pmc.ncbi.nlm.nih.gov › articles › PMC8158735
PMC - NIH
https://pmc.ncbi.nlm.nih.gov › articles › PMC8158735
Is 1/4 dioxane a surfactant?
1,4-Dioxane is a contaminant generated during the production of ethoxylated surfactants. Product testing and manufacturer-reported data point to a wide range of 1,4-dioxane contamination in personal care and cleaning products.
Personal Care and Cleaning Products Containing 1,4-Dioxane Profile
Department of Toxic Substances Control - CA.gov
https://dtsc.ca.gov › uploads › sites › 2024/05 › 14-Diox...
Department of Toxic Substances Control - CA.gov
https://dtsc.ca.gov › uploads › sites › 2024/05 › 14-Diox...
Web results
CN1345719A - Process for removing 1,4-dioxane from ...
Google Patents
https://patents.google.com › patent
Google Patents
https://patents.google.com › patent
The invention aims to provide a process for removing dioxane in an AES production process, which has the advantages of high removal efficiency of dioxane, ...Read more
6. Remediation and Treatment Technologies - 14d - ITRC
ITRC
https://14d-1.itrcweb.org › remediation-and-treatment-te...
ITRC
https://14d-1.itrcweb.org › remediation-and-treatment-te...
The removal efficiencies for 1,4-dioxane under typical wastewater treatment conditions are expected to be very low based on the available information on ...Read more