WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
School of Engineering, Edith Cowan University (ECU), Perth, WA 6027, Australia.
Molecules. 2022 Feb 14;27(4):1275. doi: 10.3390/molecules27041275.
The presence of heavy metals in water bodies is linked to the increasing number of industries and populations. This has serious consequences for the quality of human health and the environment. In accordance with this issue, water and wastewater treatment technologies including ion exchange, chemical extraction, and hydrolysis should be conducted as a first water purification stage. However, the sequestration of these toxic substances tends to be expensive, especially for large scale treatment methods that require tedious control and have limited efficiency. Therefore, adsorption methods using adsorbents derived from biomass represent a promising alternative due to their great efficiency and abundance. Algal and seaweed biomass has appeared as a sustainable solution for environmentally friendly adsorbent production. This review further discusses recent developments in the use of algal and seaweed biomass as potential sorbent for heavy metal bioremediation. In addition, relevant aspects like metal toxicity, adsorption mechanism, and parameters affecting the completion of adsorption process are also highlighted. Overall, the critical conclusion drawn is that algae and seaweed biomass can be used to sustainably eliminate heavy metals from wastewater.
水体中重金属的存在与不断增加的工业和人口数量有关。这对人类健康和环境质量造成了严重影响。针对这一问题，应将包括离子交换、化学提取和水解在内的水和废水处理技术作为第一级水净化工艺。然而，这些有毒物质的固定化往往成本高昂，特别是对于需要繁琐控制且效率有限的大规模处理方法而言。因此，使用源自生物质的吸附剂的吸附方法由于其高效性和丰富性而成为一种很有前途的替代方法。藻类和海藻生物质已成为生产环保型吸附剂的可持续解决方案。本文进一步讨论了将藻类和海藻生物质作为潜在的重金属生物修复吸附剂的最新进展。此外，还强调了相关方面，如金属毒性、吸附机制以及影响吸附过程完成的参数。总的来说，得出的关键结论是，藻类和海藻生物质可用于从废水中可持续地去除重金属。
