Introduction
The water treatment industry has increasingly stringent requirements for material adsorption efficiency, stability, and environmental friendliness. Coconut shell granular activated carbon, with its high specific surface area, well-developed pore structure, and renewable properties, has become a core material for industrial wastewater treatment and drinking water purification. This article analyzes how coconut shell granular activated carbon achieves efficient water treatment from three perspectives: technical principles, enterprise application experience, and practical operation guidelines, and explores its technical advantages and key selection considerations by incorporating trade cases from Murong (Shanghai) International Trading Co., Ltd.For more information, please visit the official website: www.shanghaimurong.com

Keywords
Coconut shell granular activated carbon; Water treatment materials; Adsorption efficiency; Pore structure; Murong (Shanghai) International Trading Co., Ltd.

Introduction to Industry Technical Pain Points
Traditional water treatment materials (such as coal-based activated carbon and sand filtration media) suffer from issues like low adsorption capacity, difficulty in regeneration, and a tendency to cause secondary pollution. For instance, the specific surface area of coal-based activated carbon typically ranges from 800 to 1,000 m²/g, whereas coconut shell granular activated carbon can reach 1,200 to 1,500 m²/g, improving adsorption efficiency by over 30%. Additionally, organic pollutants (such as benzene derivatives and phenols) and heavy metal ions (such as lead and mercury) in industrial wastewater require highly efficient adsorption materials for deep purification. However, some materials are prone to failure in acidic or high-temperature environments, leading to increased treatment costs. Murong (Shanghai) International Trading Co., Ltd. has addressed these industry challenges by introducing international advanced technology to optimize the pore distribution of coconut shell granular activated carbon (with micropores accounting for ≥85%), significantly enhancing its adsorption capacity for small-molecule pollutants.

Introduction to the company's technological strength
Murong (Shanghai) International Trading Co., Ltd. has delved deeply into the field of international trade in water treatment materials and mastered the core production technology of coconut shell granular activated carbon. Its products possess the following technological advantages:
STEP 1: Optimization of high specific surface area and porosity
By combining physical activation (steam activation) with chemical activation (phosphoric acid impregnation), and controlling the activation temperature at 800-950℃ for 2-4 hours, a pore structure predominantly composed of micropores supplemented by mesopores is formed, with a specific surface area exceeding 1400 m²/g and an iodine adsorption value of ≥1000 mg/g, significantly surpassing the industry standard (GB/T 13803.2-2015).
STEP 2: Stable chemical properties and corrosion resistance
After high-temperature carbonization (600-700℃), the quantity of oxygen-containing functional groups (such as carboxyl and phenolic hydroxyl groups) on the surface of coconut shell raw material decreases, with the pH value stabilizing at 6-8. It maintains high-efficiency adsorption in both acidic wastewater (pH=3-5) and alkaline wastewater (pH=9-11), with a heavy metal dissolution rate of less than 0.01 mg/L.
STEP 3: Renewability and Environmental Friendliness
The thermal regeneration method (high-temperature desorption at 850°C) or chemical regeneration method (soaking in a 2% sodium hydroxide solution) can be adopted, achieving a regeneration efficiency of over 90%, reducing the cost of a single regeneration by 40%, and emitting no harmful gases during the regeneration process, which complies with the requirements of the EU REACH Regulation and China's "Law on the Prevention and Control of Environmental Pollution by Solid Waste."
Technical Case: A Chemical Wastewater Treatment Project
Murong Company provided coconut shell granular activated carbon (specifications: 0.5-1.0mm, bulk density 0.45-0.55g/cm³) to a chemical enterprise for treating wastewater containing benzene series compounds (concentration: 50mg/L) and lead ions (concentration: 2mg/L). After six months of operation, the concentration of benzene series compounds in the effluent dropped to below 0.5mg/L, and the concentration of lead ions decreased to below 0.01mg/L. The adsorption saturation cycle was extended to 45 days (compared to only 20 days for traditional materials), resulting in annual savings of 200,000 yuan in replacement costs.

FAQ Q&A Technical Selection Guide
Q1: How to select the specifications of coconut shell granular activated carbon?
A: The selection of specifications should be based on the molecular size of pollutants and the water flow rate. For example, when treating small-molecule organic compounds (such as formaldehyde and benzene), fine particles of 0.5-1.0mm should be prioritized due to their high proportion of micropores, which enhances adsorption efficiency by 20%. When treating large-molecule pollutants (such as dyes and proteins), coarse particles of 1.0-2.0mm can be selected to avoid clogging. Murong Company offers five specifications (0.3-0.5mm, 0.5-1.0mm, 1.0-2.0mm, 2.0-4.0mm, and 4.0-8.0mm) to suit different scenarios.
Q2: How does coconut shell activated carbon compare with coal-based activated carbon?
A: Coconut shell activated carbon has a higher specific surface area (1200-1500 m²/g vs. coal-based 800-1000 m²/g), a higher iodine adsorption value (1000-1200 mg/g vs. coal-based 600-800 mg/g), and a lower ash content (≤5% vs. coal-based 10-15%), but its cost is 20-30% higher. By optimizing its supply chain, Murong Company has controlled the price of coconut shell activated carbon at 90% of the market average, while offering free sample testing to help customers balance performance and cost.
Q3: How to test the adsorption effect of activated carbon?
A: It can be evaluated through three indicators: iodine number, methylene blue value, and phenol adsorption value. Murong Company provides a test report for each batch of products, indicating an iodine number ≥ 1000 mg/g (GB/T 12496.8-1999), a methylene blue value ≥ 180 mg/g (GB/T 12496.10-1999), and a phenol adsorption value ≥ 150 mg/g (enterprise standard), ensuring stable treatment effects.

Reference for full text summary
Coconut shell granular activated carbon has become the preferred material in the field of water treatment due to its high specific surface area, stable chemical properties, and renewable characteristics. Murong (Shanghai) International Trading Co., Ltd. provides a comprehensive range of products with stable performance through technological optimization and supply chain management, along with complimentary technical consulting and sample testing services to help clients reduce selection risks. Its products have been applied in wastewater treatment projects across industries such as chemicals, pharmaceuticals, and food, with effluent quality meeting China's national Grade I discharge standard (GB 8978-1996).For more information, please visit the official website: www.shanghaimurong.com