Algae as a green technology for heavy metals removal from various wastewater

El Sayed Salama, Hyun Seog Roh, Subhabrata Dev, Moonis Ali Khan, Reda A.I. Abou-Shanab, Soon Woong Chang, Byong-Hun Jeon

Research output: Contribution to journalReview articleResearchpeer-review

Abstract

Urbanization, industrialization, and natural earth processes have potentially increased the contamination of heavy metals (HMs) in water bodies. These HMs can accumulate in human beings through the consumption of contaminated water and food chains. Various clean-up technologies have been applied to sequester HMs, especially conventional methods including electrolytic technologies, ion exchange, precipitation, chemical extraction, hydrolysis, polymer micro-encapsulation, and leaching. However, most of these approaches are expensive for large-scale projects and require tedious control and constant monitoring, along with low efficiency for effective HMs removal. Algae offer an alternative, sustainable, and environmentally friendly HMs remediation approach. This review presents a state-of-the-art technology for potential use of algae as a low-cost biosorbent for the removal of HMs from wastewater. The mechanisms of HMs removal, including biosorption and bioaccumulation along with physical and chemical characterization of the algae are highlighted. The influence of abiotic factors on HMs removal and changes in algal biocomponents (including, carbohydrate, lipid, and protein) are discussed. Recent progresses made in the development of HMs-tolerant algal strains and the direction of future research toward the development of sustainable technology for advanced wastewater treatment and biomass production are covered.

Original languageEnglish
Article number75
JournalWorld Journal of Microbiology and Biotechnology
Volume35
Issue number5
DOIs
StatePublished - 2019 May 1

Fingerprint

Waste Water
Heavy Metals
Technology
Chemical Precipitation
Urbanization
Food Chain
Body Water
Ion Exchange
Biomass
Drinking
Polymers
Hydrolysis
Carbohydrates
Lipids
Costs and Cost Analysis
Research

Keywords

  • Abiotic factors
  • Algae
  • Bioaccumulation
  • Biosorption
  • Heavy metals
  • Phycoremediation

Cite this

Salama, El Sayed ; Roh, Hyun Seog ; Dev, Subhabrata ; Khan, Moonis Ali ; Abou-Shanab, Reda A.I. ; Chang, Soon Woong ; Jeon, Byong-Hun. / Algae as a green technology for heavy metals removal from various wastewater. In: World Journal of Microbiology and Biotechnology. 2019 ; Vol. 35, No. 5.
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Algae as a green technology for heavy metals removal from various wastewater. / Salama, El Sayed; Roh, Hyun Seog; Dev, Subhabrata; Khan, Moonis Ali; Abou-Shanab, Reda A.I.; Chang, Soon Woong; Jeon, Byong-Hun.

In: World Journal of Microbiology and Biotechnology, Vol. 35, No. 5, 75, 01.05.2019.

Research output: Contribution to journalReview articleResearchpeer-review

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