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Prospects of integrating algae technologies into landfill leachate treatment
World Journal of Microbiology and Biotechnology ( IF 4.1 ) Pub Date : 2020-02-24 , DOI: 10.1007/s11274-020-2810-y
Ioannis Dogaris , Ehab Ammar , George P. Philippidis

Landfilling of municipal waste, an environmental challenge worldwide, results in the continuous formation of significant amounts of leachate, which poses a severe contamination threat to ground and surface water resources. Landfill leachate (LL) is generated by rainwater percolating through disposed waste materials and must be treated effectively before safe discharge into the environment. LL contains numerous pollutants and toxic substances, such as dissolved organic matter, inorganic chemicals, heavy metals, and anthropogenic organic compounds. Currently, LL treatment is carried out by a combination of physical, chemical, and microbial technologies. Microalgae are now viewed as a promising sustainable addition to the repertoire of technologies for treating LL. Photosynthetic algae have been shown to grow in LL under laboratory conditions, while some species have also been employed in larger-scale LL treatments. Treating leachate with algae can contribute to sustainable waste management at existing landfills by remediating low-quality water for recycling and reuse and generating large amounts of algal biomass for cost-effective manufacturing of biofuels and bioproducts. In this review, we will examine LL composition, traditional leachate treatment technologies, LL toxicity to algae, and the potential of employing algae at LL treatment facilities. Emphasis is placed on how algae can be integrated with existing technologies for biological treatment of LL, turning leachate from an environmental liability to an asset that can produce value-added biofuels and bioproducts for the bioeconomy.

中文翻译:

将藻类技术融入垃圾渗滤液处理的前景

城市垃圾填埋是世界范围内的一项环境挑战,会导致大量渗滤液的不断形成,对地下水和地表水资源构成严重的污染威胁。垃圾渗滤液 (LL) 是由雨水渗入处理过的废物产生的,必须经过有效处理才能安全排放到环境中。LL 含有大量污染物和有毒物质,如溶解的有机物、无机化学品、重金属和人为有机化合物。目前,LL处理是通过物理、化学和微生物技术相结合的方式进行的。微藻现在被视为治疗 LL 技术的一种有前途的可持续补充。光合藻类已被证明在实验室条件下在 LL 中生长,而一些物种也被用于更大规模的 LL 处理。用藻类处理渗滤液可以通过修复低质量的水以进行回收和再利用,并产生大量藻类生物质以经济高效地制造生物燃料和生物产品,从而有助于现有垃圾填埋场的可持续废物管理。在这篇综述中,我们将研究 LL 的成分、传统的渗滤液处理技术、LL 对藻类的毒性以及在 LL 处理设施中使用藻类的潜力。重点放在如何将藻类与现有的 LL 生物处理技术相结合,将渗滤液从环境负债转变为可以为生物经济生产增值生物燃料和生物产品的资产。用藻类处理渗滤液可以通过修复低质量的水以进行回收和再利用,并产生大量藻类生物质以经济高效地制造生物燃料和生物产品,从而有助于现有垃圾填埋场的可持续废物管理。在这篇综述中,我们将研究 LL 的成分、传统的渗滤液处理技术、LL 对藻类的毒性以及在 LL 处理设施中使用藻类的潜力。重点放在如何将藻类与现有的 LL 生物处理技术相结合,将渗滤液从环境负债转变为可以为生物经济生产增值生物燃料和生物产品的资产。用藻类处理渗滤液可以通过修复低质量的水以进行回收和再利用,并产生大量藻类生物质以经济高效地制造生物燃料和生物产品,从而有助于现有垃圾填埋场的可持续废物管理。在这篇综述中,我们将研究 LL 的成分、传统的渗滤液处理技术、LL 对藻类的毒性以及在 LL 处理设施中使用藻类的潜力。重点放在如何将藻类与现有的 LL 生物处理技术相结合,将渗滤液从环境负债转变为可以为生物经济生产增值生物燃料和生物产品的资产。
更新日期:2020-02-24
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