Abstract：
:A novel amino-functionalized hydrothermal biochar modified with nitric acid and nicotinamide (NMSH) was prepared and applied to remove heavy metal in different systems. The study of batch adsorption found that NMSH had different adsorption behaviors for Cr(VI) and Sb(V), and different concentrations of heavy metal ions exhibited different coadsorption behaviors in mixed system. NMSH had great anti-interference ability to coexisting inorganic ion and humic substance. The maximum adsorption capacity of NMSH was 132.74 mg/g for Cr(VI), and 241.92 mg/g for Sb(V). Moreover, different interfering ions and matter had different effects on adsorption. The mechanism study found that the adsorption mechanism of NMSH involved multiple interactions, and the mechanisms were different. Some O-containing functional groups of NMSH could reduce Cr(VI) to Cr(III), but not Sb(V). NMSH had great removal efficiency and reusability performance, which suggested that NMSH had prospects for practical wastewater treatment.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Deng J,Li X,Wei X,Liu Y,Liang J,Shao Y,Huang W,Cheng Xdoi
10.1016/j.biortech.2020.123438subject
Has Abstractpub_date
2020-08-01 00:00:00pages
123438eissn
0960-8524issn
1873-2976pii
S0960-8524(20)30710-0journal_volume
310pub_type
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