Abstract
ABSTRACT The traditional ammonia desulfurization process (TADP) is mainly used in the coking process of coal. The disadvantage of this process is that it produces ammonium sulfate, sodium sulfate, gypsum, and other low value-added by-products, as well as a large number of sulfur-containing wastewater, which seriously restricts the green development of the coal chemical industry. In this study, the TADP has been effectively improved. A late-model, ecologically friendly, economical, and feasible treatment method for sulfur-containing wastewater was designed. The novel ammonia desulfurization process (NADP) not only realized the high added value utilization of sulfur but also greatly saved water resources by recycling wastewater. The key to this process is to connect the crystallization reactor with the rich liquid outlet of the TADP, which simplifies the desulfurization process and improves the desulfurization efficiency. The sulfur content of coking desulfurization wastewater in the NADP was determined using Ultraviolet-Visible Spectrophotometer. The sulfur removal efficiency was up to 91.5%, indicating that it is feasible to recover sulfur from sulfur-containing wastewater by NADP. The by-product zinc sulfide (ZnS) powder was characterized by XRD, SEM, EDS, TEM, and FT-IR. The results showed that the cubic ZnS powder with high added value could be obtained by NADP desulfurization. This process can provide evidence for effective removal of sulfur from sulfur-containing wastewater and green production of resource utilization.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Energy Sources, Part A: Recovery, Utilization, and Environmental Effects
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
