期刊
JOURNAL OF WATER PROCESS ENGINEERING
卷 40, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jwpe.2020.101902
关键词
Hyper-cross-linked polymer; Organic pollutants; Ammonia; Adsorption
资金
- National Natural Science Foundation of China [52070171, 52030003]
- Major Science and Technology Program for Water Pollution Control and Treatment of China [2018ZX07110004]
The novel polymer-based adsorbent synthesized in this study displayed high uptake capacity and fast adsorption rates for methylene blue, tetracycline, and ammonia. The removal mechanisms involved electrostatic attraction, ion exchange, and high affinity interactions. The adsorbent showed excellent performance in real wastewater and binary dye solutions, offering promising potential for water-soluble contaminant and ammonia removal.
A novel highly water-dispersible polymer-based adsorbent (HCP-BPA-Na) was synthesized by using bisphenol A (BPA) containing polar functional group as raw material via cross-linking reaction, and subsequently treated with alkali solution. Owing to its abundant oxygen groups, HCP-BPA-Na displays large uptake capacity 645.16 and 268.09 mg g(-1), and fast adsorption rates 5.92 x le and 9.90 x 10(-3) g mg(-1) min(-1) for methylene blue (MB) and tetracycline (TC), respectively. Besides, it's NH3 uptake capacity can reach 7.2 mmol g(-1) at 298 K and1 bar. The removal mechanism for MB and TC was primarily caused by electrostatic attraction and ion exchange, and for the uptake of NH3 was mainly attributed to the high affinity between the basic NH3 molecule and acidic sites of the HCP-BPA-Na. Additionally, HCP-BPA-Na possesses the higher adsorption performance for MB and TC in real wastewater because of the promotion effect of dissolved organic matter and exhibited excellent adsorption ability towards MB and MO due to the synergistic enhanced effects of multi-mechanisms in binary (MB/MO) dye solutions. This study introduces a green and simple strategy for designing an oxygen-rich functional adsorbent with versatile adsorption properties, high efficiency and fast rate, which can be applied as a promising sorbent to eliminate water-soluble contaminants from the real wastewater and ammonia in the air.
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