Influence of Organic Alkali on the Preparation of Lignin-Based Anionic Adsorbents and their Performance in the Removal of Nitrate

Abstract:

Lignin-based anionic exchange resin was synthesized by modified alkali lignin after reaction with epichlorohydrin and triethylamine in the weak alkaline medium provided by pyridine in the organic medium of N,N-dimethylformamide (DMF). The influence of pyridine on synthesis process and yield of products were discussed. The product was characterized by FTIR spectroscopy analysis and the adsorbent capabilities for N from aqueous solution were also exploited. The factors that might influent the adsorption performance were investigated. An adsorbent dosage of 0.2g, adsorption time of 100min, pH of 4 and the initial concentration of nitrate concentration was 10mg/l were selected as optimum conditions.

• Periodical: Advanced Materials Research (Volumes 690-693)
• Pages: 1049-1052
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.690-693.1049
• Online since: May 2013
• Authors: Zhen Wang, Na Na Bo, Ze Sheng Cheng, Ying Liu, Yu Liu
• Keywords: Cationic Adsorbent, Lignin, Modification, Nitrogen Wastewater, Quaternary Ammonium Salt

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