Ionic liquid catalyzed low-temperature hydrothermal carbonization of sewage sludge to produce hydrochar with low heavy metal content and positive energy recovery

被引:3
作者
Liu, Liming [1 ,2 ,3 ]
Wang, Hongxia [1 ,2 ]
Zou, Wei [1 ,2 ]
Zhao, Luna [1 ,2 ]
Liang, Fashen [1 ,2 ]
Zhai, Yunbo [1 ,2 ]
机构
[1] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China
[2] Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, Changsha 410082, Peoples R China
[3] Kyoto Univ, Dept Civil & Earth Resources Engn, Kyoto 6128236, Japan
基金
中国国家自然科学基金;
关键词
Biomass; Biofuel; Clean energy; Energy recovery; Metal removal; PYROLYSIS; BEHAVIORS; CELLULOSE; PROTEIN; STARCH; LIGNIN; FATE; CHAR;
D O I
10.1016/j.biortech.2024.130803
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
An ionic liquid (IL, [DMAPA]HSO4) was prepared to facilitate the removal of heavy metals by hydrothermal carbonization (HTC) in sewage sludge (SS) and to obtain a positive energy recovery (ER, (Energy(output)/Energy(input) - 1) > 0). The results found that the removal efficiencies of the Fe, Mn, Zn, Co, and Cd from SS exceeded 75 % with positive ER (6 %) at 20 wt% IL dosage (IL:SS). IL promoted the HTC reactions of proteins and polysaccharides to produce fixed carbon and small molecule polymers. The process mainly relies on IL to catalyze the dehydration and graphitization of SS and to destroy the heavy metal binding sites such as carboxyl and hydroxyl groups. Additionally, IL aids in constructing the macropore structures in hydrochar, thereby facilitating the release of heavy metals and water during the HTC process. This discovery holds promise for removing heavy metals from SS by one-pot HTC processes with positive energy recovery.
引用
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页数:8
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共 41 条
  • [1] Protic ionic liquids from di- or triamines: even cheaper Bronsted acidic catalysts
    Brzeczek-Szafran, Alina
    Wieclawik, Justyna
    Barteczko, Natalia
    Szelwicka, Anna
    Byrne, Emily
    Kolanowska, Anna
    Swadzba Kwasny, Malgorzata
    Chrobok, Anna
    [J]. GREEN CHEMISTRY, 2021, 23 (12) : 4421 - 4429
  • [2] Characterization of ionic liquids removing heavy metals from electroplating sludge: Influencing factors, optimisation strategies and reaction mechanisms
    Cao, Chenchen
    Xu, Xiaoxun
    Wang, Guiyin
    Yang, Zhanbiao
    Cheng, Zhang
    Zhang, Shirong
    Li, Ting
    Pu, Yulin
    Lv, Guochun
    Xu, Changlian
    Cai, Junzhuo
    Zhou, Wei
    Li, Feng
    Pu, Zhien
    Li, Xiaofan
    [J]. CHEMOSPHERE, 2023, 324
  • [3] TG/DSC-FTIR and Py-GC investigation on pyrolysis characteristics of petrochemical wastewater sludge
    Chen, Jianbiao
    Mu, Lin
    Jiang, Bo
    Yin, Hongchao
    Song, Xigeng
    Li, Aimin
    [J]. BIORESOURCE TECHNOLOGY, 2015, 192 : 1 - 10
  • [4] Investigation of heat of biomass pyrolysis and secondary reactions by simultaneous thermogravimetry and differential scanning calorimetry
    Chen, Qun
    Yang, Ruiming
    Zhao, Bo
    Li, Yan
    Wang, Shujuan
    Wu, Hongwei
    Zhuo, Yuqun
    Chen, Changhe
    [J]. FUEL, 2014, 134 : 467 - 476
  • [5] Life cycle assessment of sewage sludge treatment and disposal based on nutrient and energy recovery: A review
    Ding, An
    Zhang, Rourou
    Ngo, Huu Hao
    He, Xu
    Ma, Jun
    Nan, Jun
    Li, Guibai
    [J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2021, 769
  • [6] Characterization of heavy metals and oil components in the products of oily sludge after hydrothermal treatment
    Duan, Yihang
    Gao, Ningbo
    Sipra, Ayesha Tariq
    Tong, Kun
    Quan, Cui
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2022, 424
  • [7] Removal behavior and mechanism of AAEMs and Fe in Zhundong coal under acidic ionic liquid system
    Guo, Mengyao
    Zhao, Yuemin
    Guo, Junwei
    Byambajav, Enkhsaruul
    Yan, Guanghui
    Zhang, Zhenxing
    Zhao, Pengfei
    Ni, Zhonghai
    Zhang, Bo
    [J]. FUEL, 2022, 320
  • [8] The migration and transformation behaviors of heavy metals during the hydrothermal treatment of sewage sludge
    Huang, Hua-jun
    Yuan, Xing-zhong
    [J]. BIORESOURCE TECHNOLOGY, 2016, 200 : 991 - 998
  • [9] The volatilization of heavy metals during combustion of polyvinyl chloride after hydrothermal carbonization
    Ke, Chuncheng
    Ma, Xiaoqian
    Zheng, Weihua
    Chen, Lin
    Tang, Yuting
    [J]. JOURNAL OF CLEANER PRODUCTION, 2021, 285
  • [10] Treatment of digestate residues for energy recovery and biochar production: From lab to pilot -scale veri fication
    Li, Chunxing
    Li, Jie
    Pan, Lanjia
    Zhu, Xinyu
    Xie, Shengyu
    Yu, Guangwei
    Wang, Yin
    Pan, Xiaofang
    Zhu, Gefu
    Angelidaki, Irini
    [J]. JOURNAL OF CLEANER PRODUCTION, 2020, 265