期刊
RESOURCES CONSERVATION AND RECYCLING
卷 185, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.resconrec.2022.106452
关键词
Sludge; Pyrolysis; Chemical speciation; Migration and transformation
资金
- Key Project of Research and Development Plan, China [2020YFC1908903]
- Guang- dong Basic and Applied Basic Research Foundation [2021B1515020068]
- Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0101]
- Science and Technology Program of Guangdong Province, China [2021A1515012263]
- Science and Tech- nology Program of Guangzhou, China [202002030365]
With the increase in sludge production, the disposal of sludge and reduction of heavy metal pollution have become important issues in pollutant control. Pyrolysis technology can reduce sludge volume and toxicity, promoting sludge reuse. This review focuses on the migration characteristics of heavy metals during sludge pyrolysis and examines the effect of reaction parameters on heavy metal behavior.
With the substantial increase in sludge production, the disposal of sludge and the reduction of secondary pollution by heavy metals have become one of the hottest topics in the field of pollutant control. Pyrolysis technology, an effective means of sludge treatment, facilitates the reduction of sludge volume and effectively reduces the toxicity and bioavailability of heavy metals in sludge, which promotes the reuse of sludge. Therefore, this review focuses on the migration characteristics of heavy metals in biochar during sludge pyrolysis and highlights the effect of reaction parameters such as reaction temperature, additives, and biomass co-pyrolysis on the behavior of heavy metals. Meanwhile, the current advances and the future perspectives of sludge heavy metal behavior will be prospected. It is hoped that this review may shed light on the harmless treatment and resourceful disposal of heavy metal-rich biomass.
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