Potential of cyanobacterial biofilms in phosphate removal and biomass production

Repeated phosphate removal from recirculating aquaculture system using cyanobacterium remediation and chitosan flocculation

“…; Rai et al . ; Ruiz‐Güereca & Sánchez‐Saavedra ). Using microalgae for phosphate removal is less complicated than PAOs.…”

“…Due to the complexity of phosphate removal processes using phosphate accumulating organisms (PAOs) under a sequential anaerobic-aerobic processes (Ramasahayam et al 2014), phosphate removal is still a bottle neck for the development of long-term recirculating aquaculture systems. Therefore, several technologies have been proposed for phosphate removal such as using natural Jordanian zeolitic tuff as an adsorbent (Aljbour et al 2016) and photosynthetic microorganisms such as algae and cyanobacteria (Zhang et al 2008;Burut-Archanai et al 2013;Rai et al 2016;Ruiz-G€ uereca & S anchez-Saavedra 2016). Using microalgae for phosphate removal is less complicated than PAOs.…”

Sorption of malachite green (a cationic dye) and heavy metals by dead biomass of Phormidesmis molle (cyanobacteria)‐dominated mat

“…Phormidesmis molle ‐dominated mat was used as the test material. The mat was collected from a pond in Mohammedabad, Ghazipur (India) and grown in BG‐11 medium under conditions detailed elsewhere (Rai et al, ). The latter authors have also described the characteristics of this mat.…”

“…Malachite green (MG), a cationic dye, and Cu and Cd were selected as the test dye and metals keeping in view their frequent availability in effluents of various industries as also the fact that they may deleteriously affect humans, fishes, algae and submerged plants (Yoshida et al, , Culp et al, ; Umbuzeiro et al, ; Mehta and Gaur, ; Daneshvar et al, ; Kumar et al, ). The dead biomass of Phormidesmis molle ‐dominated mat was chosen because its live biomass possesses potential capacity for sorbing metal ions like Ni and Cd (Rai et al, ).…”

Sunlight-driven recycling to increase nutrient use-efficiency in agriculture

“…The potential of such organisms to efficiently extract both N and P from effluents has been widely demonstrated [61][62][63][64][65][66], highlighting the effectiveness of both prokaryotic and eukaryotic microalgae in this context. Some microalgae species can also degrade potentially dangerous compounds, such as pesticides (even though such potential is likely to be species/compound specific [67]), making them valuable candidates to minimize pressure on water security.…”