Faced with the global water crisis, hydrophobic gas-phase white carbon black has opened up a new technological path in the field of wastewater treatment with its dual characteristics of "hydrophobicity lipophilicity". The core mechanism is that the surface methyl groups repel water molecules, while the pore structure adsorbs oil stains and heavy metal ions through van der Waals forces.


Experiments on oily wastewater treatment have shown that adding 2g/L hydrophobic white carbon black to 100mg/L emulsified oil wastewater can achieve an oil removal rate of 99.2%, far exceeding the 78% of traditional activated carbon. The on-site application of Sinopec Shengli Oilfield shows that this material can reduce the COD of oily wastewater from 1200mg/L to below 50mg/L, meeting the national first-class discharge standard.


In terms of heavy metal adsorption, the modified white carbon black has adsorption capacities of 286mg/g and 198mg/g for Pb ² ⁺ and Cd ² ⁺, respectively. The amino functionalized product developed by Donghua University has a 3.2-fold increase in Cr (VI) removal rate compared to unmodified materials under pH=5 conditions, and can be recycled and reused more than 5 times through hydrochloric acid regeneration.


In membrane separation technology, adding hydrophobic white carbon black to the polyvinylidene fluoride (PVDF) membrane substrate can increase the water contact angle on the membrane surface from 82 ° to 125 °, increase the flux by 40%, and maintain a retention rate of over 95% for humic acid. The technology has been applied to the the Taihu Lake Lake cyanobacteria treatment project, with a daily treatment capacity of 100000 tons.