Biotreatment of formaldehyde-contaminated air in a trickle bed bioreactor

Goli, Amin; Talaiekhozani, Amirreza; Eshtiaghi, Nicky; Chisti, Yusuf; Aramesh, R; Shamiri, Ahmad

doi:10.5004/dwt.2017.21512

Cited by 8 publications

(7 citation statements)

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“…The canister carbonblock filter system removed >90% of cypermethrin in <1 h for up to six 45-min filtration periods. It should be noted that activated carbon has been shown to remove formaldehyde from water (Goli et al 2014), so filters should only be used to remove cypermethrin during the 1-h KCl treatment period or after the 2-h formalin treatment period to avoid reducing the effectiveness of the zebra mussel treatment protocol.…”

Section: Discussionmentioning

confidence: 99%

Is Chemical Control for Crayfish in Hatchery Fish Shipments Practical?

Allert,

Westrich,

Whites

et al. 2023

N American J Aquac

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Invasive crayfish (family Cambaridae) displace native crayfish species and alter aquatic habitat, community structure, and ecosystem function. We evaluated whether chemical control can be a reliable control agent for crayfish to ensure that shipments from fish hatcheries did not result in new infestations of invasive crayfish. A series of acute (≤1 h) toxicity tests were conducted to evaluate the toxicity of cypermethrin and pyrethrin to crayfish, freshwater mussels, and fish; chemical concentrations in test organisms; effectiveness of carbon‐block filters to remove cypermethrin from test waters; and the cost of chemical control relative to extra handling of fish. Cypermethrin dosed at 75 μg/L for 15 min resulted in 100% mortality of adult white river crawfish Procambarus acutus and virile crayfish Faxonius virilis but did not cause >20% mortality in adult pondmussel Ligumia subrostrata, juvenile fatmucket Lampsilis siliquoidea, fingerling Bluegill Lepomis macrochirus, hybrid sunfish (Bluegill × Green Sunfish L. cyanellus), hybrid Striped Bass (White Bass Morone chrysops × Striped Bass M. saxatilis), yearling Paddlefish Polyodon spathula, or ready‐to‐eat Bluegill, hybrid sunfish, and Channel Catfish Ictalurus punctatus. Behavioral effects, such as loss of equilibrium or head shaking, were generally limited to 1 h postexposure. Mean concentrations of cypermethrin increased in fish fillets (4–26 μg/g) and whole fish (5–1,770 μg/g); therefore, regulations limiting harvest for up to 7 d following stocking may be required. A carbon‐block filtration system was effective in reducing (<90%) cypermethrin concentrations and thus reducing potential effects to nontarget species in receiving waters. Extra handling of fish was more cost‐effective for all fish tested except for Paddlefish, where the cost of chemical control was half that for extra handling. For all other fish tested, chemical control was 4–10 times more expensive than extra handling. Special use permits or chemical registration are needed before chemical control for crayfish could be routinely used at fish hatcheries.

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Section: Discussionmentioning

confidence: 99%

Is Chemical Control for Crayfish in Hatchery Fish Shipments Practical?

Allert,

Westrich,

Whites

et al. 2023

N American J Aquac

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“…Research provided purification techniques for purifying milk effluents, reduction of (i) COD by 91-97 %, (ii) total Kjeldahl nitrogen and total nitrogen (TN) by 75 % and 38 % respectively, and (iii) total solids (TS) and volatile solids (VS) by 63 % and 66 %, respectively, but prior application of mechanical treatment methods is required [12]. Anaerobic treatment processes include UASB, continuous stirred tank reactor, anaerobic digester, expanded bed/fluidized bed digesters, fixed-bed digesters, upflow anaerobic filter, anaerobic contact process, and membrane anaerobic reactor system [20].…”

Section: Constituentsmentioning

confidence: 99%

Phytoremediation: A Shift Towards Sustainability for Dairy Wastewater Treatment

Agrahari,

Kumar

2023

ChemBioEng Reviews

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Dairy processing industries have emerged as the most swiftly evolving sectors with excessive wastewater generation containing proteins, fat, oils, greases (FOGs), etc. As there is rising strain on energy usage and dependence on water resources, sustainable research focuses on reduction in wastewater generation and developing value‐added goods. An effective and widely explored sustainable technique for treating wastewater is phytoremediation, a plant‐based process. This review aims to analyze phytoremediation as a sustainable alternative for dairy wastewater treatment. It initially briefs about dairy wastewater characteristics and treatment alternatives and discusses constructed wetlands and hydroponic system in detail with mechanism insights and influenced process parameters. Interconnected technologies with phytoremediation and their impact on contaminant transformations, nutrient reuse, and detoxification of pollutants are encompassed. Also, resource recovery and biomass utilization, feedstock enrichment along with the future prospects of integrated hydroponic systems for achieving sustainability with efficient resource recovery are featured.

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“…Dairy industry waste is neutralized by means of anaerobic methods in multiple types of advanced digesters [27]. These include UASB (upflow anaerobic sludge blanket), ABR (anaerobic baffled reactor), AMBR (anaerobic migrating blanket reactor), ASBR (anaerobic sequencing batch reactor), AnMBR (anaerobic membrane bioreactor), EGSB (expanded granular sludge bed), M-SHFAR (multi-section horizontal flow reactor), and FAF-R (fluidized active filling reactor) [28]. Though many existing methods are available, new improvements to processes are sought to neutralize dairy waste faster and more efficiently while increasing biogas production [28].…”

Section: Introductionmentioning

confidence: 99%

Microwave Radiation Influence on Dairy Waste Anaerobic Digestion in a Multi-Section Hybrid Anaerobic Reactor (M-SHAR)

2021

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Whey is a primary by-product of dairy plants, and one that is often difficult to manage. As whey processing units are costly and complicated, only 15–20% of whey is recycled for use in the food industry. The difficulties in managing waste whey are particularly pronounced for small, local dairy plants. One possible solution to this problem is to use advanced and efficient digesters. The aim of this study was to present an innovative multi-section hybrid anaerobic bioreactor (M-SHAR) design and to identify how microwave radiation heating (MRH) affects methane fermentation of liquid dairy waste (LDW) primarily composed of acid whey. The MRH reactor was found to perform better in terms of COD removal and biogas production compared with the convection-heated reactor. The heating method had a significant differentiating effect at higher organic load rates (OLRs). With OLRs ranging from 15 to 25 kgCOD∙m−3∙d−1, the M-SHAR with MRH ensured a 5% higher COD removal efficiency and 12–20% higher biogas yields.

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Biotreatment of formaldehyde-contaminated air in a trickle bed bioreactor

Cited by 8 publications

References 0 publications

Is Chemical Control for Crayfish in Hatchery Fish Shipments Practical?

Is Chemical Control for Crayfish in Hatchery Fish Shipments Practical?

Phytoremediation: A Shift Towards Sustainability for Dairy Wastewater Treatment

Microwave Radiation Influence on Dairy Waste Anaerobic Digestion in a Multi-Section Hybrid Anaerobic Reactor (M-SHAR)

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