Utilization of the By-Products for Simultaneous Purification of Sulfur Dioxide and Nitrogen Oxide in Bio-Trickling Process

Abstract:

The potential of using the waste from simultaneous NO_x and SO₂ purification bio-trickling process to leach copper ore and to make fertilizer was investigated. It was found there were two main exhausted by-products in the purification process: the acidic liquid in desulfurization tower and the alkalescent liquid in denitrogenation tower. Through operation of leaching the oxide ore sample containing 2.58% copper by the acidic liquid, the effective grade of the metal to be extracted reached 28.37% by weight. With adding proportional dose of ammonia into the alkalescent liquid or the acidic liquid and going through evaporation and concentration, crystal products of ammonium sulfate and ammonium nitrate were generated, which can be used in fertilizer manufacturing.

• Periodical: Advanced Materials Research (Volumes 779-780)
• Pages: 1220-1223
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.779-780.1220
• Online since: September 2013
• Authors: Wen Bo Zhou, Ping Zou, Pei Shi Sun, Xiao Yi Bi, Yong Yang Mao, Xiao Yun Zheng
• Keywords: Bio-Trickling Filter, By-Product Recycling, Fertilizer, Flue Gas, Leaching Agent, Simultaneous Denitrogenation, Simultaneous Desulfurization

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