Prepartion and application of novel blast furnace dust based catalytic-ceramic-filler in electrolysis assisted catalytic micro-electrolysis system for ciprofloxacin wastewater treatment.
Prepartion and application of novel blast furnace dust based catalytic-ceramic-filler in electrolysis assisted catalytic micro-electrolysis system for ciprofloxacin wastewater treatment.
复制标题
DOI：
10.1016/j.jhazmat.2019.121215
复制
发表时间：
2020-02
影响因子：
13.6
通讯作者：
Longlong Zhang;Yue Gao;Q. Yue;Ping Zhang;Yu Wang;B. Gao
中科院分区：
文献类型：
--
作者：
Longlong Zhang;Yue Gao;Q. Yue;Ping Zhang;Yu Wang;B. Gao
高炉粉尘是炼铁过程中产生的一种有害冶金废弃物，含有大量的铁和碳。本研究首次将BFD应用于催化陶瓷填料（CCF）的制备和环丙沙星（CIP）的降解。新型BFD基Fe-Ni复合碳纤维对CIP的去除率（3 h后约为42%~ 72%）明显高于传统的Fe-C陶瓷填料（CF）。进一步将铁镍复合碳纤维应用于电解辅助催化微电解（E-CME）工艺处理炭浆废水的耦合系统中。在最佳操作条件下（铁棒为阳极，电压为10 v，水力停留时间为3 h），在近中性条件下，E-CME工艺对CIP、TOC和TP的去除率分别接近97%、90%和99%。LC-MS分析表明，CIP在E-CME过程中主要发生多羟基取代、哌嗪环断裂等降解反应。此外，由于E-CME预处理显著提高了废水的可生化性，因此上流式厌氧滤池（UAF）可有效去除E-CME处理后的化学需氧量（COD）残留。该研究为BFD的共回收利用提供了新的途径，为CIP废水的处理提供了一种高效、经济的技术。
Blast furnace dust (BFD), a hazardous metallurgical waste, is generated during the iron-making process and consists plenty of Fe and C. This study is among the first to apply BFD in catalytic-ceramic-filler (CCF) preparation and degradation of ciprofloxacin (CIP). The novel BFD based Fe-Ni CCF obviously enhanced the removal of CIP (from around 42%–72% after 3 h) in comparation with troditional Fe-C ceramic-filler(CF). The Fe-Ni CCF was further applied in a coupled system of electrolysis assisted catalytic micro-electrolysis (E-CME) process for CIP wastewater treatment. Under optimal operating conditions (iron rod as anode, voltage of 10v and HRT of 3 h), nearly 97% of CIP, 90% of total organic carbon (TOC) and 99% of total phosphorus (TP) were removed by E-CME process in near-neutral solution. The degradation mechanism analysis by LC–MS revealed that polyhydroxy sub-stituted, piperazine rings cleavage and so on were the main reaction of CIP in E-CME process. Additionally, the chemical oxygen demand (COD) residue after E-CME process could be effectively eliminated by up-flow anaerobic filter (UAF), owing to the significant improvement of wastewater biodegradability by E-CME pretreatment. This study provides a new way for co-friend recycling of BFD and a highly-efficient, cost-sffective technology for CIP wastewater treatment.