期刊
JOURNAL OF WATER PROCESS ENGINEERING
卷 42, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jwpe.2021.102201
关键词
Enteromorpha prolifera; Biochar; Alkali activation; Cadmium; Adsorption
资金
- Ministry of Science and Technology of the People's Republic of China [2019YFD1100305]
- National Natural Science Foundation of China [51878557]
- Shenzhen Key Project of Basic Research [JCYJ20200109150210400]
This study successfully addressed cadmium pollution by producing biochar from Enteromorpha prolifera, with KOH activated biochar at a ratio of 1:2 showing optimal removal efficiency. The biochar demonstrated promising potential as a cadmium adsorbent with multiple environmental benefits.
Cadmium emission from industrial processes is causing serious environmental problems, and biochar adsorption is an effective approach to control the cadmium content in wastewater. Producing biochar from Enteromorpha prolifera could not only provide sustainable biochar resource, but also promisingly solve the algae bloom problem worldwide. This work prepared Enteromorpha prolifera biochar (EPB) via slow pyrolysis method, the effect of different KOH to EPB mass ratios and different influencing parameters were also studied. Characterizations including SEM-EDS, FTIR and elemental analysis were comprehensively conducted to explore the physicochemical properties of EPB. The results showed that EPB activated by KOH with an impregnation ratio of 1:2 had the optimal cadmium removal performance, where a removal efficiency of 99.8% was obtained. Electrostatic interaction was a major adsorption mechanism. The isotherm analysis showed that Langmuir isotherm model could better fit the adsorption data. As a result, KOH activated EPB presented satisfactory features as a promising cadmium adsorbent with multiple environmental benefits.
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