期刊
ENVIRONMENTAL POLLUTION
卷 291, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2021.118133
关键词
Landfill leachate treatment; Emerging materials; Emerging technologies; Environmental restoration
资金
- Key Area Research and Development Program of Guangdong Province [2019B110205003]
- Guangdong Basic and Applied Basic Research Foundation [2019A1515010843, 2019A1515110353]
- Shenzhen Science and Innovation Commission [JCYJ20200109113006046, 20200813094050001]
- Nevada Water Resources Research Institute [G16AP00069]
Sanitary landfill is commonly used for solid waste disposal, but it generates landfill leachate which can impact the environment. There is a need for innovative technologies to remove pollutants from the leachate, but current research is limited, highlighting the importance of further studies on novel materials and technologies for landfill leachate treatment.
Sanitary landfill is the most popular way to dispose solid wastes with one major drawback: the generation of landfill leachate resulting from percolation of rainfall through exposed landfill areas or infiltration of groundwater into the landfill. The landfill leachate impacts on the environment has forced authorities to stipulate more stringent requirements for pollution control, generating the need for innovative technologies to eliminate waste degradation by-products incorporated in the leachate. Natural attenuation has no effect while conventional treatment processes are not capable of removing some the pollutants contained in the leachate which are reported to reach the natural environment, the aquatic food web, and the anthroposphere. This review critically evaluates the state-of-the-art engineered materials and technologies for the treatment of landfill leachate with the potential for real-scale application. The study outcomes confirmed that only a limited number of studies are available for providing new information about novel materials or technologies suitable for application in the removal of pollutants from landfill leachate. This paper focuses on the type of pollutants being removed, the process conditions and the outcomes reported in the literature. The emerging trends are also highlighted as well as the identification of current knowledge gaps and future research directions along with recommendations related to the application of available technologies for landfill leachate treatment.
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