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Department of Civil and Environmental Engineering: Faculty Publications
Biochar; hydrothermal carbonization; H3PO4 activator; adsorption mechanisms; lettuce waste
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Single-Step Hydrothermal Synthesis Of Biochar From H3po4-Activated Lettucewaste For Efficient Adsorption Of Cd(Ii) In Aqueous Solution, Quyun Chen, Tian C. Zhang, Like Ouyang, Shaojun Yuan
Single-Step Hydrothermal Synthesis Of Biochar From H3po4-Activated Lettucewaste For Efficient Adsorption Of Cd(Ii) In Aqueous Solution, Quyun Chen, Tian C. Zhang, Like Ouyang, Shaojun Yuan
Department of Civil and Environmental Engineering: Faculty Publications
Developing an ideal and cheap adsorbent for adsorbing heavy metals from aqueous solution has been urgently need. In this study, a novel, effective and low-cost method was developed to prepare the biochar from lettuce waste with H3PO4 as an acidic activation agent at a low-temperature (circa 200°C) hydrothermal carbonization process. A batch adsorption experiment demonstrated that the biochar reaches the adsorption equilibrium within 30 min, and the optimal adsorption capacity of Cd(II) is 195.8 mg⋅g-1at solution pH 6.0, which is significantly improved from circa 20.5 mg⋅g-1 of the original biochar without activator. The fitting …