Frequently Asked Questions

We offer a comprehensive range of activated carbon products including coconut shell activated carbon, coal-based activated carbon, wood-based activated carbon, powdered activated carbon (PAC), granular activated carbon (GAC), and pellet/extruded activated carbon. Each type is available in various grades and specifications to suit different applications.

The best activated carbon for your application depends on several factors including the contaminants you need to remove, the phase (liquid or gas), flow rates, and budget. Coconut shell carbon is ideal for water purification and gold recovery. Coal-based carbon works well for general water treatment. Wood-based carbon excels at decolorization. Our technical team can provide personalized recommendations based on your specific requirements.

Our standard minimum order quantity is 1 metric ton for most products. However, we can accommodate smaller trial orders for testing purposes. For large-volume orders, we offer competitive bulk pricing. Please contact our sales team for specific pricing and MOQ details for your required product.

We ship worldwide via sea freight, air freight, and express courier services. Standard sea freight delivery takes 15-30 days depending on destination. Air freight is available for urgent orders with 5-7 day delivery. All shipments are professionally packaged in 25kg bags on pallets or in 500kg/1000kg jumbo bags. We handle all export documentation and can arrange CIF, FOB, or EXW terms.

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Yes, we provide free product samples for qualified buyers. Sample quantities typically range from 1-5 kg depending on the product type. Samples are shipped via express courier at our expense for serious inquiries. Please contact our sales team with your application details and requirements, and we will arrange appropriate samples for your evaluation.

The iodine number is a measure of activated carbon’s adsorption capacity, specifically its ability to adsorb small molecules. It is expressed in milligrams of iodine adsorbed per gram of carbon (mg/g). A higher iodine number indicates greater microporosity and better performance for removing small organic contaminants. For water treatment, an iodine number of 900+ mg/g is generally recommended. For gold recovery, 1000+ mg/g is preferred.

Yes, spent activated carbon can often be thermally regenerated and reused. Thermal reactivation involves heating the spent carbon to high temperatures (800-900°C) in a controlled atmosphere to remove adsorbed contaminants and restore adsorption capacity. Typically, 5-10% of carbon mass is lost per regeneration cycle. We offer reactivation services and can advise on whether regeneration is cost-effective for your specific application.

Tanjin Carbon maintains ISO 9001:2015 quality management certification and ISO 14001:2015 environmental management certification. Our products meet NSF/ANSI 61 standards for drinking water treatment and AWWA B604 standards. We also hold food-grade certifications for products used in food and beverage processing. Certificates of Analysis (COA) are provided with every shipment.