BS ISO 21436:2020 - Pulps. Determination of Lignin Content. Acid Hydrolysis Method

Standard Number: BS ISO 21436:2020

Pages: 22

Released: 2020-12-09

ISBN: 978 0 580 94703 2

Status: Standard

Overview

The BS ISO 21436:2020 is a comprehensive standard that provides a detailed methodology for the determination of lignin content in pulps using the acid hydrolysis method. This standard is essential for professionals in the pulp and paper industry, offering a reliable and consistent approach to measure lignin, a critical component affecting the quality and properties of pulp products.

Why Lignin Content Matters

Lignin is a complex organic polymer found in the cell walls of plants, making up a significant portion of wood and other plant materials. In the context of pulp production, lignin content is a crucial factor that influences the strength, color, and overall quality of the final paper product. Understanding and controlling lignin levels can lead to improved product performance and cost efficiency in manufacturing processes.

Acid Hydrolysis Method

The acid hydrolysis method outlined in this standard is a precise and effective technique for quantifying lignin content. This method involves breaking down the pulp material using acid, which allows for the accurate measurement of lignin. The procedure is designed to ensure repeatability and reliability, making it a preferred choice for laboratories and production facilities worldwide.

Key Features of BS ISO 21436:2020

• Comprehensive Guidelines: The standard provides step-by-step instructions for conducting the acid hydrolysis method, ensuring clarity and ease of implementation.
• International Recognition: As an ISO standard, it is recognized globally, facilitating international trade and collaboration in the pulp and paper industry.
• Quality Assurance: Adhering to this standard helps ensure the quality and consistency of pulp products, enhancing customer satisfaction and market competitiveness.
• Environmental Considerations: The method supports sustainable practices by optimizing the use of raw materials and reducing waste.

Who Should Use This Standard?

This standard is indispensable for:

• Pulp and Paper Manufacturers: Ensuring product quality and compliance with industry standards.
• Quality Control Laboratories: Providing a reliable method for testing and analysis.
• Research and Development Teams: Facilitating innovation and improvement in pulp processing techniques.
• Environmental Analysts: Assessing the environmental impact of pulp production processes.

Benefits of Implementing BS ISO 21436:2020

By implementing the BS ISO 21436:2020 standard, organizations can achieve several benefits:

• Enhanced Product Quality: Accurate lignin measurement leads to better control over pulp properties, resulting in superior paper products.
• Cost Efficiency: Optimizing lignin content can reduce production costs by minimizing the need for additional processing and additives.
• Regulatory Compliance: Meeting international standards helps ensure compliance with regulatory requirements, avoiding potential legal and financial penalties.
• Market Competitiveness: Adhering to recognized standards can enhance a company's reputation and competitiveness in the global market.

Conclusion

The BS ISO 21436:2020 standard is an essential tool for anyone involved in the pulp and paper industry. By providing a reliable method for determining lignin content, it helps ensure the quality, efficiency, and sustainability of pulp production processes. Whether you are a manufacturer, laboratory technician, or researcher, this standard offers valuable guidance and support for achieving excellence in your field.

BS ISO 21436:2020

This standard BS ISO 21436:2020 Pulps. Determination of lignin content. Acid hydrolysis method is classified in these ICS categories:

• 85.040 Pulps

The method is applicable to unbleached, bleached and semi-bleached wood pulp with a lignin content above 1 %. It is not generally intended for fully bleached chemical pulp, because the lignin content in these pulps is too low to be determined accurately.