Laboratory of Environment-Enhancing Energy (E2E), And Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering China Agricultural University, Beijing, 100083, China.
Laboratory of Environment-Enhancing Energy (E2E), And Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering China Agricultural University, Beijing, 100083, China.
Environ Pollut. 2021 Jan 1;268(Pt B):115910. doi: 10.1016/j.envpol.2020.115910. Epub 2020 Oct 22.
Pollutants in wastewater and exhaust gas bring out serious concerns to public health and the environment. Biochar can be developed as a sustainable adsorbent originating from abundant bio-wastes, such as agricultural waste, forestry residue, food waste and human waste. Here we highlight the state-of-the-art research progress on pyrochar and hydrochar for the sorption of pollutants (heavy metal, organics, gas, etc) in wastewater and exhaust gases. The adsorption performance of pyrochar and hydrochar are compared and discussed in-depth, including preparation procedures (carbonization and activation), sorption possible mechanisms, and physiochemical properties. Challenges and perspective for designing efficient and environmental benign biochar-based adsorbents are finally addressed.
废水中的污染物和废气对公众健康和环境带来了严重的担忧。生物炭可以作为一种可持续的吸附剂，由丰富的生物废料（如农业废物、林业残渣、食物废物和人类废物）开发而来。在这里，我们重点介绍了热解炭和水热炭在废水和废气中吸附污染物（重金属、有机物、气体等）方面的最新研究进展。对热解炭和水热炭的吸附性能进行了比较和深入讨论，包括制备程序（碳化和活化）、吸附可能的机制以及物理化学性质。最后还讨论了设计高效和环境友好的基于生物炭的吸附剂所面临的挑战和展望。
