Product Introduction

Lignin powder/liquid is a byproduct of the pulp and paper industry, found in wood and straw, comprising approximately 20-28% of their mass. During the pulping process, lignin is separated as a major byproduct of the cellulose industry. After processing, it can be transformed into lignin powder or liquid, which appears as a yellowish-brown or reddish-brown powder or liquid.

Product Composition

Main Applications

Agricultural Applications

1. Soil Improvement and Fertility Enhancement

   • Soil Structure Improvement: The porous and colloidal properties of lignin powder enhance soil aggregation, improving aeration and moisture retention while alleviating compaction.
   • Slow-Release Fertilizer Carrier: By combining with chemical fertilizers (like urea and phosphates), lignin can adsorb and slowly release nutrients, minimizing leaching and increasing fertilizer efficiency.
   • Organic Matter Increase: As a natural organic carbon source, lignin promotes microbial activity in the soil, accelerating organic matter accumulation.

2. Pollution Remediation and Heavy Metal Passivation

   • Heavy Metal Adsorption: Functional groups such as phenolic hydroxyl and carboxyl groups in lignin can chelate heavy metals (like lead, cadmium, and arsenic) in the soil, reducing their bioavailability.
   • Pesticide Residue Degradation: Promotes microbial metabolism to accelerate the breakdown of organic chlorine pesticides.

3. Plant Stress Resistance and Growth Regulation

   • Drought Resistance and Water Retention: Lignin can absorb water and form a gel, reducing evaporation and enhancing crops' drought resistance.
   • Induction of Disease Resistance: Some lignin derivatives (like lignosulfonates) can activate plant defense systems, inhibiting soil-borne diseases (like root rot).

Aquaculture Applications

1. Water Quality Purification and Stabilization

   • Harmful Substance Adsorption: The porous structure of lignin powder can adsorb ammonia nitrogen, nitrites, heavy metals, and organic pollutants, improving water quality.
   • Algal Bloom Suppression: Competes for nutrients or releases algicidal substances (such as phenolic compounds) to reduce excessive blue-green algae growth.

2. Feed Additive

   • Fiber Supplement: Serves as a dietary fiber source for aquatic animals (like grass carp and shrimp), promoting gut motility and digestive health.
   • Immune Enhancement: Lignin derivatives (such as sulfonated lignin) can stimulate immune cell activity, improving disease resistance.

3. Eco-Friendly Aquaculture Materials

   • Biodegradable Netting: Can be combined with biodegradable plastics to create aquaculture facilities, reducing traditional plastic pollution in water bodies.

Feed Applications

1. Functional Feed Additive

   • Improving Digestive Health: The fiber content in lignin powder can regulate rumen fermentation in ruminants, enhancing roughage utilization; in monogastric animals, it promotes the proliferation of beneficial gut bacteria.
   • Mycotoxin Adsorption: Physically adsorbs mycotoxins like aflatoxins and deoxynivalenol, safeguarding animal health.

2. Manure Management

   • Odor Control: When added to livestock bedding, lignin can absorb harmful gases like ammonia and hydrogen sulfide, improving air quality in farming facilities.
   • Manure Treatment: Acts as a composting conditioner, accelerating manure fermentation and reducing pathogens and odors.

3. Antibiotic Replacement Potential

   • Antimicrobial Properties: Phenolic compounds in lignin exhibit inhibitory effects against E. coli and Salmonella, potentially serving as a partial substitute for antibiotics.