1.What are the advantages of bio-enzyme treatment compared to traditional processes?
Reaction mechanism: Traditional pickling activates strong acid to dissolve oxides/grease; biological enzyme treatment catalyzes the hydrolysis of organic matter.
Surface damage: Traditional pickling and activation excessive etching (loss of zinc layer); biological enzyme treatment selective micro-etching (nanoscale).
Environmental protection: The waste acid from traditional pickling and activation is difficult to handle; biological enzyme treatment can achieve biodegradation (no heavy metals).
Energy consumption: Traditional pickling activation is high (needs heated acid); biological enzyme treatment operates at room temperature.
2.What are the methods for removing organic pollutants?
Lipase: hydrolyzes surface oil (fatty acid glyceride) → generates water-soluble glycerol + fatty acid.
Protease: decomposes protein residue (transportation/processing pollution) → amino acid fragments.
Removal rate: >99% oil removal rate can be achieved after enzyme treatment.
3.Measures to increase chemical activity?
Hydroxylation surface: Enzymatic reaction exposes fresh zinc layer, which reacts with water to form Zn-OH groups.
Surface energy improvement: Contact angle decreases from >90° (hydrophobic) to <40° (hydrophilic), improving coating wettability.
4.What are the limitations of technology and how to deal with them?
Ineffective for thick oxide layer: If the zinc layer has severe white rust (ZnO accumulation), it needs to be mechanically polished first
Enzyme activity decline: Add stabilizer to extend the life of the working solution to 8 weeks
5.What are the recommended application scenarios?
New energy vehicle battery tray: Avoid the risk of pickling hydrogen embrittlement and ensure the safety of high-voltage components.
High-end home appliance color-coated plates: Achieve zero VOC emissions and meet environmental regulations (REACH, RoHS). Marine engineering galvanized parts: Microporous structure enhances the adhesion of silicone coating.