Preparation and coagulation performance of solid aluminium formate

Mikola, Marja; Tanskanen, Juha

doi:10.1016/j.jwpe.2014.11.007

Cited by 9 publications

(6 citation statements)

References 13 publications

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“…The residual turbidities achieved were very low which indicates that big share of the particles have been removed and the matter left in the solution causing the residual turbidity cannot effectively be removed with coagulation even with high coagulant doses. Similar trend that the coagulation performance is not improving anymore after certain coagulant dose has been observed also in other studies for example in study conducted with industrial polymer effluent coagulation [16] and in surface water treatment with same aluminium formate used in this study [12,13].…”

Section: Effect Of Aluminium Coagulant Type Dose and Phsupporting

confidence: 90%

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Performance of aluminium formate in removal of colloidal latex particles from industrial wastewater

Mikola

Tanskanen

2017

Journal of Water Process Engineering

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The coagulation efficiency of novel coagulant aluminium formate was studied in the treatment of highly contaminated effluent from a styrene butadiene latex manufacturing plant. The coagulation behaviour of the aluminium formate was compared to the behaviour of the commonly used polyaluminium chloride and aluminium sulphate. The effects of the coagulant type and dose and coagulation pH on the treatment efficiency were studied as well as the role of polyacrylamide coagulant aid. Floc separation was done using three different methods: sedimentation, filtration and centrifugation. Their functionality was evaluated as part of the coagulation performance studies.Good purification results were obtained with all of the tested coagulants, the lowest residual turbidities achieved being 0.7 NTU with aluminium formate, 1.4 NTU with polyaluminium chloride and 0.7 NTU with aluminium sulphate. It was also observed that aluminium formate is as effective as commercial coagulants and is thus a potential novel coagulant chemical due to its less harmful and biodegradable counter anion. When using only aluminium coagulants, flocs were found to be too fine to be removed by sedimentation but they could be effectively removed by filtration or centrifugation.The use of polyacrylamide was found to be useful in the sense that it enables the separation of flocs by simple sedimentation because the floc size is significantly increased. In this study new knowledge about the coagulation behaviour of of highly contaminated effluent from latex manufacturing was gained and aluminium formate was proved to be promising coagulant also in industrial effluent treatment.

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Section: Effect Of Aluminium Coagulant Type Dose and Phsupporting

confidence: 90%

“…Earlier, aluminium formate has been studied only in the treatment of surface water [12][13][14]. No previous studies on the use of aluminium formate in industrial effluent treatment have been published.…”

Section: Introductionmentioning

confidence: 99%

Performance of aluminium formate in removal of colloidal latex particles from industrial wastewater

Mikola

Tanskanen

2017

Journal of Water Process Engineering

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“…The solution was heated carefully on a hot plate at a temperature of 45 °C. As a result, a strong robust reaction takes place and the temperature was slightly increased to 90° C the solution was turned into solid form and dried in oven at 105° C for 20 (Mikola and Tanskanen, 2015). The formed solid was grinded using blender to convert into fine powder form.…”

Section: Synthesis Of Aluminium Formatementioning

confidence: 99%

“…Some researchers had found that due to the usage of coagulants aluminium and ferric salts in huge dose leads to the residual metal in treated water as well as sludge produced by metal salts is normally porous, incompact and difficult to dewater as it has high moisture contents of 99-99.7% (Zhao and Bache, 2002). In tannery wastewater, chloride and sulphates are one of the major problems in biological treatments due to the high concentration of Chloride which retards biodegradation of dissolved organics and sulphate also causes corrosiveness to various materials during pre-treatment of coagulation process (Maharaja et al, 2017;Mikola and Tanskanen, 2015). In order to overcome these problems, it is necessary to find an alternate coagulant to treat the wastewater with no toxic effects.…”

Section: Introductionmentioning

confidence: 99%

“…The reason to consider coagulant is that, it is less corrosive than chloride and sulphate and can be decomposed easily and agglomeration of anions in treated water can be eluded (Vaananen et al, 2012;Talu and Diyamandoglu, 2004). Biodegradability empowers the processed water to be used in irrigation without causing salinization of the soil and also the other prospective of the formate anion can be used to aggrandize the performance of biological process which follows coagulation as a pre-treatment (Mikola and Tanskanen, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Treatment of tannery wastewater using aluminium formate: influence of the formate over sulphate based coagulant

2018

Global NEST Journal

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<p>Tannery industries provoke the conspicuous quantity of deleterious effluent which has to be treated prior to discharge into the environment. Pre-treatment of tannery wastewater with aluminium sulphate is well known over decades, but due to the corrosive nature of sulphate this pre-treated water causes several issues in the biological treatment system. To overcome this issue a study was performed to understand the coagulant activity of aluminium formate and aluminium sulphate. The effect of coagulant activity as a function of pH and coagulant dose of Aluminium formate was studied and found that it surpassed aluminium sulphate in terms of Cr(VI), sulphate and COD removal by 10%, 6% and 10% respectively, while turbidity removal for both coagulants was found approximately equal. Possible mechanistic approach to the coagulation property of aluminium formate and aluminium sulphate could be inter particle bridging and sweep coagulation respectively. Formate [HCOO-] can be utilized as a counter anion in the place of commonly used sulphate anions as it is biodegradable, non-toxic and corrosive free compound. Therefore, Aluminium formate can be a promising coagulant for the pre-treatment of tannery wastewater.</p>

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Aluminum formate (AF): Synthesis, characterization and application in dye wastewater treatment

Xue

Gao

et al. 2018

Journal of Environmental Sciences

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Preparation and coagulation performance of solid aluminium formate

Cited by 9 publications

References 13 publications

Performance of aluminium formate in removal of colloidal latex particles from industrial wastewater

Performance of aluminium formate in removal of colloidal latex particles from industrial wastewater

Treatment of tannery wastewater using aluminium formate: influence of the formate over sulphate based coagulant

Aluminum formate (AF): Synthesis, characterization and application in dye wastewater treatment

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