Production of hydrochar from the hydrothermal carbonisation of food waste feedstock for use as an adsorbent in removal of heavy metals from water

被引:2
作者
Pasipanodya, Danai [1 ]
Seedat, Naadhira [1 ]
Patel, Bilal [2 ]
Roopchund, Rishen [1 ]
机构
[1] Univ Johannesburg, Dept Chem Engn, Doornfontein Campus, ZA-2094 Johannesburg, South Africa
[2] Univ South Africa, Dept Chem Engn, Florida Campus, ZA-1709 Johannesburg, South Africa
基金
新加坡国家研究基金会;
关键词
Food waste; Activated hydrochar; Hydrothermal carbonisation; Wastewater treatment; Heavy metal removal; ANAEROBIC-DIGESTION; TECHNOLOGY;
D O I
10.1007/s13399-024-06097-w
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
In this research, discarded butternut peels were converted into hydrochar products through hydrothermal carbonisation (HTC), with adjustments made to the temperature (ranging from 180 to 260degree celsius) and residence time (spanning 45-180 min). The findings indicated that both the temperature and time of carbonisation significantly influenced the yield of hydrochar (HC), as well as its physiochemical and structural properties. Higher temperatures and prolonged residence time led to decreased yield, elevated fixed carbon content and an increased fuel ratio. Furthermore, raising the process conditions increased HHV and reduced the oxygen-containing functional groups. The HC yield dropped from 28.75 to 17.58% with increased carbonisation temperature and time. The findings of this study also suggest that modified hydrochar is a promising material for removing heavy metals from wastewater. It is a relatively low-cost and abundant material that can be produced from various biomass feedstocks, including food waste. In addition, it is a sustainable and environmentally friendly option for wastewater treatment. Hydrochar-based systems offer several advantages over traditional methods of heavy metal removal, such as chemical precipitation and ion exchange. The unique physicochemical characteristics of hydrochar, including its porous structure and oxygen-rich functional groups, offer a high surface area and more binding sites for heavy metal ions. By changing the physicochemical properties of hydrochar with chemicals like phosphoric acid, it is possible to increase its adsorption capacity. The Freundlich isotherm was the best fit for the adsorption data for all three metal ions (Pb2+, Cu2+ and Cd2+), indicating that the adsorption process is multilayer and heterogeneous.
引用
收藏
页码:11819 / 11833
页数:15
相关论文
共 51 条
[1]  
Ahmad K., 2012, Removal of Heavy Metals (Zn, Cr, Pb, Cd, Cu and Fe) in Aqueous Media by Calcium Carbonate as an Adsorbent
[2]   Adsorptive removal of antibiotics from water and wastewater: Progress and challenges [J].
Ahmed, Mohammad Boshir ;
Zhou, John L. ;
Ngo, Huu Hao ;
Guo, Wenshan .
SCIENCE OF THE TOTAL ENVIRONMENT, 2015, 532 :112-126
[3]  
Ameh V.I., 2024, Waste Manag. Bull., V2, P32, DOI [10.1016/j.wmb.2024.03.002, DOI 10.1016/J.WMB.2024.03.002]
[4]  
Anakhu E.A., 2023, Environ. Funct. Mater., V2, P178, DOI [10.1016/j.efmat.2024.02.002, DOI 10.1016/J.EFMAT.2024.02.002]
[5]   Hydrothermal Carbonization of Corncob and Characterization of the Obtained Hydrochar [J].
Arellano, Oscar ;
Flores, Marian ;
Guerra, Julia ;
Hidalgo, Alejandro ;
Rojas, Daysi ;
Strubinger, Adelitza .
2ND INTERNATIONAL CONFERENCE ON BIOMASS (ICONBM 2016), 2016, 50 :235-240
[6]   Forecasting municipal solid waste quantity using arti fi cial neural network and supported vector machine techniques: A case study of Johannesburg, South Africa [J].
Ayeleru, O. O. ;
Fajimi, L., I ;
Oboirien, B. O. ;
Olubambi, P. A. .
JOURNAL OF CLEANER PRODUCTION, 2021, 289
[7]   Valorisation possibilities of exhausted biosorbents loaded with metal ions - A review [J].
Badescu, Iulia Simona ;
Bulgariu, Dumitru ;
Ahmad, Iftikhar ;
Bulgariu, Laura .
JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2018, 224 :288-297
[8]   Pyrolysis of municipal food waste: A sustainable potential approach for solid food waste management and organic crop fertilizer production [J].
Boakye, Patrick ;
Nuagah, Miriam Beneireh ;
Oduro-Kwarteng, Sampson ;
Appiah-Effah, Eugene ;
Kanjua, Jolly ;
Antwi, Anthony Boakye ;
Darkwah, Lawrence ;
Sarkodie, Kwame ;
Sokama-Neuyam, Yen Adams .
SUSTAINABLE ENVIRONMENT, 2023, 9 (01)
[9]   Towards a more efficient Hydrothermal Carbonization: Processing water recirculation under different conditions [J].
Boutaieb, M. ;
Roman, S. ;
Ledesma, B. ;
Sabio, E. ;
Guiza, M. ;
Ouederni, A. .
WASTE MANAGEMENT, 2021, 132 :115-123
[10]  
Cherad R, 2015, Hydrogen production from the catalytic supercritical water gasification of process water generated from hydrothermal liquefaction of microalgae, DOI [10.1016/j.fuel.2015.10.088, DOI 10.1016/J.FUEL.2015.10.088]