Removal of chloro-organics and color from pulp and paper mill wastewater by polyaluminium chloride as coagulant

Choudhary, Anand; Kumar, Satish; Sharma, Chhaya

doi:10.1080/19443994.2013.848670

Cited by 32 publications

(15 citation statements)

References 35 publications

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“…51,52 In recent years, PAC has been used increasingly owing to its lower cost, better coagulation/occulation performance, and effectiveness across a wide pH range than the conventional coagulants. [53][54][55][56] However, the treatment efficiency of these coagulants is heavily dependent on the natural characteristics of the water to be treated. Therefore, the preliminary experiments to investigate the coagulation-sedimentation performances of kali alum and PAC were carried out to choose the most suitable one for pre-treatment of oodwater in the Hau Giang River, in which the basic quality indicators of the oodwater were evaluated through the change in the concentration of these coagulants over a 10 min settling time.…”

Section: Pre-treating Oodwater Using Coagulation-sedimentation Methodsmentioning

confidence: 99%

Assessment and treatment of floodwater in the Vietnamese Mekong Delta using a simple filter system based on silver nanoparticles coated onto activated carbon derived from rice husk

et al. 2021

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Section: Pre-treating Oodwater Using Coagulation-sedimentation Methodsmentioning

confidence: 99%

Assessment and treatment of floodwater in the Vietnamese Mekong Delta using a simple filter system based on silver nanoparticles coated onto activated carbon derived from rice husk

et al. 2021

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“…The procedure suggested by Lindstrom and Nordin (1976) was followed for the extraction of CHPs from wastewater. CHPs were first recognized by the NIST library and then retention times were verified by injecting the pure standard solutions (Choudhary et al 2015).…”

Section: Methodsmentioning

confidence: 99%

Synthesis, characterization and catalytic performance of ZnO–CeO2 nanoparticles in wet oxidation of wastewater containing chlorinated compounds

2017

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Here we report the catalytic property of ZnO-CeO 2 nanoparticles towards oxidative degradation of organic pollutants present in industrial wastewater. The catalysts were prepared by co-precipitation method without using any surfactant. The physicochemical properties of catalysts were studied by XRD, Raman, XPS, N 2 -sorption, FE-SEM, TEM and EDX techniques. The characterization results confirmed the formation of porous ZnO-CeO 2 nanocatalysts with high surface area, pore volume and oxygen vacancies. ZnO-CeO 2 nanocatalysts exhibited appreciable efficiency in CWAO of industrial wastewater under mild conditions. The Ce 40 Zn 60 catalyst was found to be most efficient with 72% color, 64% chemical oxygen demand (COD) and 63% total organic carbon (TOC) removal. Efficient removal of chlorophenolics (CHPs, 59%) and adsorbable organic halides (AOX, 54%) indicated the feasibility of using ZnO-CeO 2 nanocatalysts in degradation of non-biodegradable and toxic chlorinated compounds.

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“…Aluminum chlorohydrates (ACH) are of great use in numerous fields [1] such as water treatment [2][3][4][5][6][7], clay pillaring [8,9] and antiperspirants [10,11]. They are hydrolyzed salts containing large, highly positively charged aluminum oligomers [12].…”

Section: Introductionmentioning

confidence: 99%

Capillary electrophoresis for aluminum ion speciation: Optimized separation conditions for complex polycation mixtures

Ouadah

Moire

Brothier

et al. 2018

Journal of Chromatography A

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Aluminum chlorohydrates (ACH) are used in numerous applications and commercial products on a global scale including water treatment, catalysis or antiperspirants. They are complex mixtures of water soluble aluminum polycations of different degrees of polymerization, that are difficult to separate and quantify due to their susceptibility to depolymerize in solution when placed out of equilibrium, which is inherent to any separation process. We recently achieved the first capillary electrophoresis separation and characterization of ACH oligomers using 4-morpholineethanesulfonic acid (MES) as background electrolyte counter-ion. MES stabilizes the separated ACH oligomers during the electrophoretic process leading to highly repeatable and fast separations. In this work, the separation of ACH oligomers was further studied and perfected by varying the ionic strength, MES concentration and pH of the background electrolyte. Complex electrophoretic behavior is reported for the separation of Al, Al and Na ions according to these experimental parameters. The transformation of the electropherograms in effective mobility scale and the use of the slope-plot approach are used to better understand the observed changes in selectivity/resolution. Optimal conditions (700 mM MES at 25 mM ionic strength containing 0.1 mM didodecyldimethylammonium bromide for dynamic capillary coating, pH 4.8) obtained for the separation of ACH oligomers are used for the baseline separation of samples difficult to analyze with other methods, including different molecular, aggregated and colloidal forms of aluminum from the Al, Al and Na mixture, validating the rationale of the approach.

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Removal of chloro-organics and color from pulp and paper mill wastewater by polyaluminium chloride as coagulant

Cited by 32 publications

References 35 publications

Assessment and treatment of floodwater in the Vietnamese Mekong Delta using a simple filter system based on silver nanoparticles coated onto activated carbon derived from rice husk

Assessment and treatment of floodwater in the Vietnamese Mekong Delta using a simple filter system based on silver nanoparticles coated onto activated carbon derived from rice husk

Synthesis, characterization and catalytic performance of ZnO–CeO2 nanoparticles in wet oxidation of wastewater containing chlorinated compounds

Capillary electrophoresis for aluminum ion speciation: Optimized separation conditions for complex polycation mixtures

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