Case

The Critical Role of Cylindrical Activated Carbon in Modern Gold Extraction

Tanzania Gold Mine (2024) Achieved 92% recovery rate using 2.5mm cylindrical carbon with 1050 mg/g iodine value, reducing elution energy costs by 18%. Australian Heap Leaching Project Implemented 3mm high-hardness carbon to withstand 30-meter column pressure, increasing throughput by 25%. Get Free Quote Iodine Value (≥1000 mg/g) Particle Size 1-3 mm diameter Hardness ≥95% pH Tolerance 3-11 Regeneration Cycles 5-10 times Why Choose Cylindrical Over Granular? Higher packing density (480-520 g/L) improves contact efficiency Lower carbon carry-over in electrowinning stages Predictable fluid dynamics for automated systems Environmental Compliance Modern production processes meet ISO 14001 standards, with cyanide-resistant variants minimizing wastewater treatment costs.

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A complete analysis of the application of activated carbon in water purification

1. Core parameters of activated carbon for water purification Get Free Quote Parameters Standard requirements Application value Iodine adsorption value ≥1000 mg/g Remove small molecule organic matter (phenol, humic acid) Carbon tetrachloride adsorption rate ≥60% Characterize the adsorption capacity of VOCs/pesticides Methylene blue adsorption value ≥150 mg/g Key indicators of decolorization capacity (printing and dyeing wastewater) Particle size 8-30 mesh (columnar carbon) Balance adsorption rate and pressure drop 2. Typical application scenarios and cases 1. Deep purification of drinking water Case: A city water plant upgraded its process to treat slightly polluted water sources (raw water COD 5.8mg/L, ammonia nitrogen 1.2mg/L) Selection: coconut shell activated carbon (iodine value 1100mg/g, particle size 12-30 mesh) Parameters: filtration rate 12m/h, contact time 15 minutes Effect: effluent COD ≤ 2mg/L, odorous substance removal rate > 95%, ton water treatment cost increased by ￥0.08 2. Heavy metal adsorption of electroplating wastewater Case: A circuit board factory in Guangdong treats copper-containing wastewater (Cu²⁺ 50mg/L, Ni²⁺ 30mg/L) Selection: modified activated carbon (loaded with sulfide, specific surface area 900㎡/g) Parameters: dynamic adsorption column empty tower flow rate 2BV/h, pH=5.5 Effect: effluent Cu²⁺ < 0.5mg/L, adsorption capacity up to 180mg/g, annual savings of ￥1.2 million in hazardous waste disposal...

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Parameters of concern to customers of powdered activated carbon

Powdered activated carbon (PAC) is a black, finely ground material with a high internal surface area used for adsorbing impurities and contaminants from air and water. It is known for its ability to effectively remove color, odor, and other contaminants from liquids and gases, making it useful in various applications like water treatment and gas purification. Get Free Quote Parameters Standard range Application scenarios Detection methods Iodine adsorption value ≥800-1000 mg/g Adsorption of liquid organic pollutants GB/T 12496.8-2015 Methylene blue adsorption value ≥150-220 mg/g Dye/macromolecule decolorization ASTM D3860 Carbon tetrachloride adsorption rate ≥60-75% Gas-phase VOCs adsorption GB/T 7702.7-2008 Caramel decolorization power ≥100-120% Sugar industry/food decolorization and refining HG/T 3921-2006 Physical property parameters Particle size distribution D50 (median particle size): 10-30μm (water treatment), 5-15μm (injection decolorization) >75μm sieve residue: <5% (to prevent pipe blockage) Apparent density: 0.3-0.5 g/cm³ (affects the selection of dosing equipment) Water content: ≤10% (sealed packaging to prevent caking) I. Chemical safety indicators Indicators Food/pharmaceutical grade standards Industrial grade standards Ash content ≤3% ≤8% pH value 6.0-8.0 (neutral carbon) 5.0-10.0 Heavy metals (Pb) ≤10 ppm ≤50 ppm Microbial limit ≤100 CFU/g – Polycyclic aromatic hydrocarbons (PAHs) Not detected (16 items) – II. Key parameters for application scenarios Water...

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Biochar: The Ancient Secret Fighting Modern Climate Crisis

Did you know Amazonian tribes used “Terra Preta” over 2,000 years ago to transform poor soils into fertile black gold? Today, scientists rediscover this wisdom as #Biochar – our powerful ally against climate change. Get Free Quote Why Global Leaders Are Excited: Carbon Vault: 1 ton of biochar = 3 tons CO₂e sequestered (IPCC 2023) Crop Booster: +15-25% yield in degraded soils (FAO） Water Savior: Retains 20% more moisture in drought-prone areas Real-World Heroes: Kenya：Small farmers using rice husk biochar increased maize yields by 40% (World Bank项目成果) Brazil：Coffee plantations cut fertilizer use by 30% with biochar amendments EU：”Biochar Cities” project turning urban green waste into carbon-negative fuel If you want to know more about biochar, you can contact Kelin and give you 24-hour professional service #ClimateAction #SustainableAgriculture #CarbonRemoval #CircularEconomy #RegenerativeFarming

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The key role of columnar activated carbon in industrial waste gas treatment and practical case analysis

Columnar activated carbon (diameter 3-8mm, length 5-20mm) has become the preferred adsorption material for continuous treatment of industrial waste gas due to its high mechanical strength and low pressure drop characteristics. This article combines engineering cases to explain its technical parameters and engineering practice in detail. Get Free Quote 1. Technical advantages of columnar activated carbon Parameters Comparison of granular carbon Application value Bed pressure drop Reduced by 40-60% Suitable for large air volume treatment (> 50,000 m³/h) Abrasion resistance > 98% completeness Adapt to vibration conditions (such as chemical plants) Effective adsorption cycle Extended by 30-50% Reduce replacement frequency Regeneration convenience Steam purge regeneration Recycled 5-8 times II. Core selection parameters Physical and chemical indicators Iodine adsorption value: ≥1000mg/g (treating benzene series) Carbon tetrachloride adsorption rate: ≥65% (non-polar VOCs) Bulk density: 450-550kg/m³ (guaranteed adsorption capacity) Ash content: <8% (food and pharmaceutical industry requires <3%) Engineering parameters Empty tower flow rate: 0.2-0.5m/s (anti-ditch flow) Filling height: 1.2-2m (>90% adsorption efficiency) Temperature and humidity requirements: 20-40℃, RH <60%   Typical case analysis Case 1: Toluene waste gas treatment in chemical plants Waste gas parameters: Air volume 80000m³/h, toluene concentration 300-800mg/m³, containing a small amount of H₂S System configuration: Pretreatment: alkali washing...

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Use activated carbon to purify edible oil

Application and technical analysis of activated carbon in oil decolorization Activated carbon has become an indispensable decolorization material in oil refining due to its unique pore structure and surface chemical properties. This article systematically analyzes the key technologies of activated carbon in oil decolorization from the mechanism of action, process parameters to industrial practice. Get Free Quote Decolorization mechanism and advantages Adsorption mechanism Physical adsorption: Relying on 2-50nm mesopores to capture pigment macromolecules (such as chlorophyll, carotenoids) Chemical adsorption: Surface carboxyl/phenolic hydroxyl groups combine with polar impurities such as phospholipids and soap stock Synergistic effect: When used in combination with white clay, the decolorization efficiency is increased by 30-50% (white clay adsorbs small molecule pigments) Industrial application cases Case 1: Palm oil refining Initial red value: 7.5 (Lovibond 5.25″ tank) Process: activated carbon (0.8%) + acidified clay (1.2%), 90℃/30min Result: red value dropped to 1.2, acid value only increased by 0.1mgKOH/g Case 2: Waste lubricating oil regeneration Processing capacity: 5 tons/hour Process: three-stage moving bed (activated carbon particle size 1.5-2mm) Result: transmittance (660nm) increased from 58% to 92%, PAHs removal rate > 85% For more information on applications in edible oil purification, please use our contact form to request more...

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