Hydrochars production, characterization and application for wastewater treatment: A review

RENEWABLE & SUSTAINABLE ENERGY REVIEWS

卷:127

Review

Azzaz, Ahmed Amine^1,2  Khiari, Besma³  Jellali, Salah⁴  Ghimbeu, Cam Elia Matei^1,2  Jeguirim, Mejdi^1,2 

[1] Univ Haute Alsace, Inst Sci Mat Mulhouse IS2M, CNRS, UMR 7361, F-68100 Mulhouse, France

[2] Univ Strasbourg, F-67081 Strasbourg, France

[3] Technopk Borj Cedria, Ctr Water Res & Technol CERTE, Lab Wastewaters & Environm, Tourist Rd Soliman,BP 273, Borj Cedria 8020, Tunisia

[4] Sultan Qaboos Univ, Ctr Environm Studies & Res CESAR, PEIE Res Chair Dev Ind Estates & Free Zones, Muscat 123, Oman

关键词: Hydrothermal carbonization;    Hydrochar;    Activation;    Water treatment;    Adsorption mechanisms;   

DOI  :  10.1016/j.rser.2020.109882

来源: Elsevier

【 摘 要 】

Hydrothermal carbonization (HTC) of wet solid wastes has been pointed out as an eco-friendly, flexible and highly efficient technology for the sustainable valorization of multiple sourced wastes. In this review paper, most recent studies on hydrochars (solid residue of the HTC process) production, characterization and application for wastewaters treatment was summarized and deeply discussed. The role of initial feedstock source nature and characteristics as well as the HTC experimental conditions including the temperature, the residence time and the pH media was assessed. Physical and chemical activation methods including the use of oxygen, steam, microwave, acids, alkaline, organics and salty solutions for the improvement of the physicochemical properties of the produced hydrochars are compared. The efficiency of these raw/modified hydrochars along with the involved mechanisms during organic (dyes) and mineral pollutants (heavy metals and nutrients) removal from aqueous solutions is also reviewed. Finally, this paper addresses the main challenges and also demonstrates insights on new directions for hydrochars research and development in the future.

【 授权许可】

Free