US EPA

7454215 

Journal Article 

Review 

Insights into conventional and recent technologies for arsenic bioremediation: A systematic review 

Irshad, S; Xie, Z; Mehmood, S; Nawaz, A; Ditta, A; Mahmood, Q 

2021 

Yes 

Environmental Science and Pollution Research
ISSN: 0944-1344
EISSN: 1614-7499 

28 

15 

18870-18892 

English 

33586109 

10.1007/s11356-021-12487-8 

WOS:000617854700008 

https://www.proquest.com/scholarly-journals/insights-into-conventional-recent-technologies/docview/2489597625/se-2?accountid=171501
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Arsenic (As) bioremediation has been an economical and sustainable approach, being practiced widely under several As-contaminated environments. Bioremediation of As involves the use of bacteria, fungi, yeast, plants, and genetically modified organisms for detoxification/removal of As from the contaminated site. The understanding of multi-factorial biological components involved in these approaches is complex and more and more efforts are on their way to make As bioremediation economical and efficient. In this regard, we systematically reviewed the recent literature (n=200) from the last two decades regarding As bioremediation potential of conventional and recent technologies including genetically modified plants for phytoremediation and integrated approaches. Also, the responsible mechanisms behind different approaches have been identified. From the literature, it was found that As bioremediation through biosorption, bioaccumulation, phytoextraction, and volatilization involving As-resistant microbes has proved a very successful technology. However, there are various pathways of As tolerance of which the mechanisms have not been fully understood. Recently, phytosuction separation technology has been introduced and needs further exploration. Also, integrated approaches like phytobial, constructed wetlands using As-resistant bacteria with plant growth-promoting activities have not been extensively studied. It is speculated that the integrated bioremediation approaches with practical applicability and reliability would prove most promising for As remediation. Further technological advancements would help explore the identified research gaps in different approaches and lead us toward sustainability and perfection in As bioremediation. 

Arsenic; Bioremediation; Phytobial; Phytosuction separation; Constructed wetlands; Simultaneous biosorption and bioaccumulation