Effects of barley straw (<i>Hordeum vulgare</i>) on freshwater and brackish phytoplankton and cyanobacteria

Brownlee, Emily F.; Sellner, S. G.; Sellner, Kevin G.

doi:10.1023/b:japh.0000004353.15684.25

Cited by 33 publications

(32 citation statements)

References 9 publications

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“…However, not all cyanobacteria seem susceptible to rotting barley straw; no effects were observed in Pseudoanabaena sp. (Brownlee et al 2003) and growth stimulation has been observed in Anabaena cylindrica, A. flos-aquae, Oscillatoria animalis and O. lutea var. contorta (Martin and Ridge 1999;Ferrier et al 2005).…”

Section: Plant/tree Extractsmentioning

confidence: 98%

Evaluation of several end-of-pipe measures proposed to control cyanobacteria

2015

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While reduction in nutrient loading is a prerequisite for mitigation of harmful cyanobacterial blooms in nutrient-enriched waters, in certain surface waters eutrophication control is not always feasible due to practical and economic constraints or might be effective only in the long run. Yet, the urgent need to control cyanobacteria in water for drinking, irrigation, aquaculture, industry and recreation has spurred the development of a plethora of alternative methods that claim to be fast acting. Here, we provide a critical overview of several of these end-of-pipe measures: effective microorganisms (EM Ò ), golden algae (Ochromonas), plant/tree extracts, ultrasound and artificial mixing of non-stratifying waters. Most of the end-of the pipe measures claim to provide sustainable control of harmful cyanobacterial blooms, while at best only targeting symptom relief rather than eutrophication relief. Support for ''effective'' microorganisms, golden algae, plant extracts, ultrasound and artificial mixing of non-stratifying waters to diminish eutrophication problems such that the resulting water quality meets societal and legislation demands is limited, and several proposed underlying mechanisms are doubtful. None of these curative measures seem the desired wide applicable solution to cyanobacterial nuisance; they should not be considered Columbus's egg. A critical evaluation of end-of pipe measures is crucial for water authorities in their choice for mitigating measures.

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Section: Plant/tree Extractsmentioning

confidence: 98%

Evaluation of several end-of-pipe measures proposed to control cyanobacteria

2015

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“…The first report about the use of barley straw as a technique to suppress the growth of harmful phytoplankton was in the 80s (Welch et al 1990;Newman and Barrett 1993;Barrett et al 1999;Brownlee et al 2003). The first study was not specifically against cyanobacteria, but against the green alga Cladophora glomerata in the Chesterfield canal (Welch et al 1990).…”

Section: Barley Strawmentioning

confidence: 99%

Existing and emerging cyanocidal compounds: new perspectives for cyanobacterial bloom mitigation

et al. 2016

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To help ban the use of general toxic algicides, research efforts are now directed towards the discovery of compounds that are specifically acting as cyanocides. Here, we review the past and look forward into the future, where the less desirable general algicides like copper sulphate, diuron or endothall may become replaced by compounds that show better specificity for cyanobacteria and are biodegradable or transform into non-toxic products after application. For a range of products, we review the activity, the mode of action, effectiveness, durability, toxicity towards non-target species, plus costs involved, and discuss the experience with and prospects for small water volume interventions up to the mitigation of entire lakes; we arrive at recommendations for a series of natural products and extracted organic compounds or derived synthetic homologues with promising cyanocidal properties, and briefly mention emerging nanoparticle applications. Finally, we detail on the recently introduced application of hydrogen peroxide for the selective killing of cyanobacteria in freshwater lakes.

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“…Canada produces large amounts of barley straw, wheat straw and canola straw; some of which is used for animal feed, animal bedding and a major part of the straw is often considered as waste. It was reported that barley straw is used in ponds, lakes and aquariums to control algae and cyanobacteria and the straw is not toxic to fish and environment, the water is clean and clear all year long (Brownlee 2003). Barley straw contains hemi-cellulose, cellulose, lignin and protein (Mani 2002;Kulp 2000).…”

Section: Knowledge Gapmentioning

confidence: 99%

Biosorption of nickel with barley straw

Thevannan

Mungroo

Niu

2010

Bioresource Technology

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Nickel contaminated wastewater from plating industries is a major environmental concern. Current treatment methods are often expensive and can also create additional problems. Biosorption is an alternative treatment method that uses inexpensive biomaterials to sequester metals from aqueous solutions. In this study, acid washed barley straw (AWBS) was used for adsorbing nickel ions (Ni 2+ ) from simulated nickel plating wastewater. The adsorption process was rapid and the equilibrium was reached in about anhour. An increase in the initial nickel concentration increased the equilibrium nickel uptake, and the maximum uptake was found to be 8.45 mg/g of AWBS when the initial nickel concentration was1000 mg/L at pH 5. Nickel adsorption was favorable at room temperature than 5 o C and 40 o C, better adsorption rate and equilibrium uptake was observed at 23 o C. Increasing the pH from 3 to 7 increased the equilibrium nickel uptake and the maximum uptake was observed at pH 7, whilst the initial nickel ion concentration was 100 mg/L. The Freundlich isotherm model exhibited better fit with the equilibrium data than the Langmuir equation. Nickel was desorbed using hydrochloric acid solution at pH 2 and the desorption efficiency was 86%. LIST OF TABLES

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Effects of barley straw (Hordeum vulgare) on freshwater and brackish phytoplankton and cyanobacteria

Cited by 33 publications

References 9 publications

Evaluation of several end-of-pipe measures proposed to control cyanobacteria

Evaluation of several end-of-pipe measures proposed to control cyanobacteria

Existing and emerging cyanocidal compounds: new perspectives for cyanobacterial bloom mitigation

Biosorption of nickel with barley straw

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