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How Sodium Chlorate Supports Eco-Friendly Advancements in Pulp Bleaching Processes?
Release time：
2025-08-14 16:40
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Sodium chlorate, as the essential precursor for chlorine dioxide (ClO₂) generation, is driving the green transformation of global pulp bleaching processes. Traditional bleaching methods relying on elemental chlorine often produce toxic byproducts like dioxins and adsorbable organic halides (AOX). In contrast, sodium chlorate-based ClO₂ bleaching significantly reduces AOX emissions by over 90% while minimizing fiber damage, helping the paper industry achieve stringent environmental goals.
The core advantage of this chemical lies in its role as a stable, high-purity feedstock for on-site ClO₂generation. When activated in specialized reactors, sodium chlorate releases chlorine dioxide—a selective oxidant that efficiently degrades lignin without compromising cellulose integrity. This process increases pulp brightness by 20–30 ISO points while reducing chemical oxygen demand (COD) in wastewater. Currently, Hunan United as a professional supplier, provides customized sodium chlorate solutions for paper manufacturers seeking ECF (Elemental Chlorine-Free) bleaching compliance.
Industry experts emphasize that as global plastic restrictions advance, sodium chlorate-based
ClO₂technology will accelerate the replacement of traditional chlorine methods, offering critical support for recyclable packaging paper production aligned with circular economy principles.
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