Details

Autor(en) / Beteiligte

• Cheng, Sze Yin
• Show, Pau-Loke
• Lau, Beng Fye
• Chang, Jo-Shu
• Ling, Tau Chuan

Titel

New Prospects for Modified Algae in Heavy Metal Adsorption

Ist Teil von

• Trends in biotechnology (Regular ed.), 2019-11, Vol.37 (11), p.1255-1268

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2019

Quelle

MEDLINE

Beschreibungen/Notizen

• Heavy metal pollution is one of the most pervasive environmental problems globally. Novel finely tuned algae have been proposed as a means to improve the efficacy and selectivity of heavy metal biosorption. This article reviews current research on selective algal heavy metal adsorption and critically discusses the performance of novel biosorbents. We emphasize emerging state-of-the-art techniques that customize algae for enhanced performance and selectivity, particularly molecular and chemical extraction techniques as well as nanoparticle (NP) synthesis approaches. The mechanisms and processes for developing novel algal biosorbents are also presented. Finally, we discuss the applications, challenges, and future prospects for modified algae in heavy metal biosorption. Novel finely tuned algae can improve the selectivity and performance of heavy metal adsorption.Molecular modification can be used to display metal-binding proteins at the cell surface via gene overexpression or by introducing exogenous DNA to generate transgenic algae.The performance of chemical modification has been highly variable, and more studies will be necessary to overcome its limitations.The extraction approach is promising because of the strong metal-binding properties of algae that have been attributed to alginate.Algae-based nanoparticles show better performance in heavy metal removal compared with raw algae.