Mercury release behaviors of Guizhou bituminous coal during co-pyrolysis: Influence of chlorella

作     者：Huawei Zhang Yifan Zhou Ting Liu Xiaopeng Tian Yuhan Zhang Juan Wang Mingzhu Zhang Thipphasone Phoutthavong Peng Liang Huawei Zhang;Yifan Zhou;Ting Liu;Xiaopeng Tian;Yuhan Zhang;Juan Wang;Mingzhu Zhang;Thipphasone Phoutthavong;Peng Liang

作者机构：School of Environmental and Municipal EngineeringQingdao University of TechnologyQingdao 266033China College of Chemical and Biological EngineeringShandong University of Science and TechnologyQingdao 266590China Shanxi Institute of Industrial StandardizationTaiyuan 030032China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2022年第34卷第9期

页      面：23-32页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：supported by the Natural Science Foundation of Shandong Province (No. ZR2019MEE023) the Qingchuang Science and Technology Program of Shandong Province University (No. 2019KJD004) the National Natural Science Foundation of China (Nos. 22078168 and 21776164) 

主　　题：Chlorella Coal Co-pyrolysis Mercury Release behavior 

摘      要：Co-pyrolysis of coal and seaweed can not only effectively decrease the carbon footprint but also improve the quality and output of coal pyrolysis products,however,the influence of seaweed on thermal releasing behaviors of mercury during co-pyrolysis process are still *** this work,the chlorella and Guizhou bituminous coal were mixed and used to reveal the mercury release behavior during co-pyrolysis by the temperature programmed pyrolysis experiments,thermogravimetric and differential thermogravimetric analysis(TG-DTG)and thermogravimetry-mass spectrometry(TG-MS)methods,offering a sufficient explanation on the control technology of mercury pollutants in *** results exhibited that a large amount of reducing gases such as CO,H_(2) and H_(2)O were generated in chlorella at the temperature range of 100-500℃,which was favorable for the transformation from oxidized mercury to elemental mercury,thus remarkably increased the release of elemental mercury in the raw coal *** mixed chlorella also significantly lowered the decomposition temperature range(from 400-600 to 300-400℃)of pyrite-bound mercury and decreased the decomposition temperatures of the pyrite-bound mercury ***,in the copyrolysis about 91.82%of mercury was released into the gas phase below 400℃ and was 13.77% higher than that of in individual pyrolysis of coal.