Diagnosis of dissolved organic matter removal by GAC treatment in biologically treated papermill effluents using advanced organic characterisation techniques

Antony, Alice; Bassendeh, Mojgan; Richardson, Desmond; Aquilina, Simon; Hodgkinson, Andrew; Law, I. A.; Leslie, Greg

doi:10.1016/j.chemosphere.2011.11.059

Cited by 24 publications

(4 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the effluent of the PAC and PAC-SBR systems, the fluorescence peak C disappeared after the treatment. This result suggested that these organic compounds were easily adsorbed by PAC, which was also illustrated in previous researches [28,29]. Therefore, PAC helped to remove the compounds that were difficult for micro-organisms to biodegrade.…”

Section: Fluorescence Analysis Of Wastewater In Different Treatment Ssupporting

confidence: 58%

Optimization and effect of powdered activated carbon addition on commingled chemical industrial wastewater treatment in a sequencing batch reactor

Wang

et al. 2015

Desalination and Water Treatment

View full text Add to dashboard Cite

In this study, commingled chemical industrial wastewater was treated using a sequencing batch reactor with powdered activated carbon (PAC-SBR). The performance of the PAC-SBR system was investigated under various dosages and feeding frequencies. Results showed that a PAC dosage of 2 g PAC/L-reactor and a feeding frequency of 0.25 g PAC/Lreactor to 0.5 g PAC/L-reactor per 3.5-7 d maintained a stable long-term performance during operation. The effects of PAC addition were also considered. Removal of organic matter in the PAC-SBR system demonstrated synergistic effects of biodegradation and PAC adsorption. The system with PAC had better sludge volume index values (100-200) than that without PAC (150-250). This result suggested that the sludge settling characteristic was improved. Hence, PAC addition was proven to increase biomass in the PAC-SBR system, which improved the removal of chemical oxygen demand through biodegradation. Furthermore, the excitation-emission matrix spectrum of organic matter showed that compounds in raw wastewater that contains aromatic rings, heterocyclic ring structures, and bicyclic aromatic structures were partially removed by biodegradation and PAC adsorption. The organic acid-like compounds, which were recalcitrant to biodegradation, were adsorbed via PAC. The results of organic matter fractionation showed that compounds in transphilic neutral and hydrophilic fractions were easily transformed through biodegradation, whereas compounds in hydrophobic fractions were adsorbed by PAC.

show abstract

Section: Fluorescence Analysis Of Wastewater In Different Treatment Ssupporting

confidence: 58%

Optimization and effect of powdered activated carbon addition on commingled chemical industrial wastewater treatment in a sequencing batch reactor

Wang

et al. 2015

Desalination and Water Treatment

View full text Add to dashboard Cite

show abstract

“…O carvão ativado também vem sendo utilizado em tratamentos de efluentes de indústria de celulose, principalmente para a remoção de cor e compostos recalcitrantes por meio do processo de adsorção, atingindo cerca de 80% de remoção desses compostos (ANTONY et al, 2012;FENG et al, 2020;HINOJOSA;XAVIER, 2016;KAMALI et al, 2019). No processo de adsorção, o carvão é aplicado como material adsorvente por apresentar características como alta área superficial específica (ASE) (acima de 700 m 2 g -1 ), superfície irregular, volume de poros elevado e sítios ativos que favorecem a ligação e aderência de contaminantes, facilitando sua remoção do meio aquoso (GEREMIAS et al, 2012;MISHRA;MISHRA;KHAN, 2010;TRAGHETTA;OLIVEIRA, 2010).…”

Section: Introductionunclassified

Tratamento de efluente kraft por sistema de lodos ativados com adição de carvão ativado como meio suporte

Castro

Xavier

2020

Rev. Bras. Ciênc. Ambient. (Online)

View full text Add to dashboard Cite

Os efluentes industriais de celulose apresentam uma complexa composição desubstâncias, com elevada carga orgânica e compostos recalcitrantes que dificultamo tratamento em sistemas biológicos comumente aplicados, como lodos ativados.Assim, faz-se necessária a realização de estudos para a melhoria desses tratamentos.Nessa perspectiva, este trabalho teve como objetivo avaliar um sistema delodos ativados com adição de meio suporte de carvão ativado em pó (CAP) parao tratamento de efluente Kraft. Para isso, um reator foi operado por 110 dias,separado em quatro etapas. A primeira apenas de lodos ativados e as outras comconcentrações de CAP de 2,4 e 6 g L-1 (etapas II, III e IV, respectivamente). A remoçãoda matéria orgânica foi maior nas etapas com meio suporte, obtendo médias de55,94 e 58% para demanda química de oxigênio, demanda bioquímica de oxigênioe carbono orgânico total, respectivamente. Parâmetros específicos, como cor,derivados de lignina e compostos aromáticos, foram removidos em 28, 29 e 36% emmédia, respectivamente, nas etapas com o CAP. Observou-se a formação de biofilmena superfície do meio suporte durante o tratamento, com maior concentração debiomassa na etapa IV, alcançando 4.086 mg L-1 de sólidos suspensos voláteis. Nogeral, a adição do CAP como meio suporte no sistema de lodos ativados melhorou aeficiência de tratamento, entretanto o aumento da concentração de CAP no reatornão apresentou melhorias significativas, o que indica a quantidade de 2 g L-1 de CAPcomo a melhor concentração aplicada no sistema de lodos ativados.

show abstract

“…Reductions in river discharge reduce dilution and transport of pollutants. Paper mill effluent contains high concentrations of dissolved organic matter that is difficult to treat, and when aquatic systems are overloaded, this material can induce high biochemical and chemical oxygen demand (BOD and COD, respectively) (Antony et al 2012). High BOD can reduce dissolved oxygen concentration to levels harmful to many aquatic organisms (Lima Neto et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Response of the fish assemblage to a saltwater barrier and paper mill effluent in the Lower Neches River (Texas) during drought

Pizano-Torres

Roach

Winemiller

2016

Journal of Freshwater Ecology

View full text Add to dashboard Cite

In 2011, Texas experienced record heat and drought that escalated concerns about environmental flows for rivers. In response to these worries, fishes and water quality were sampled in the Lower Neches River, Texas, from May-August 2012 during continued drought. Potential effects of hydrology on environmental parameters and assemblages of small (seine samples) and large (gillnet samples) fishes were evaluated at multiple locations. Approximately 1 km downstream from the saltwater barrier, paper mill effluent discharges into the river. Salinity was higher and dissolved oxygen lower below the saltwater barrier during low-flow intervals. Fish species richness in seine samples, was higher when the barrier was open, and species richness for both gear types was lowest at sites closest to the paper mill effluent discharge. Overall, species richness was higher at sites below the barrier, with more estuarine and marine species present. When the barrier was closed, richness and abundance of sensitive freshwater species were lower below the barrier. Closure of the barrier during drought results in accumulation of dissolved organic compounds from paper mill effluent and lower dissolved oxygen in the reach below the barrier. To sustain biodiversity in the system, subsistence flows must pass across the saltwater barrier during droughts.

show abstract

Diagnosis of dissolved organic matter removal by GAC treatment in biologically treated papermill effluents using advanced organic characterisation techniques

Cited by 24 publications

References 30 publications

Optimization and effect of powdered activated carbon addition on commingled chemical industrial wastewater treatment in a sequencing batch reactor

Optimization and effect of powdered activated carbon addition on commingled chemical industrial wastewater treatment in a sequencing batch reactor

Tratamento de efluente kraft por sistema de lodos ativados com adição de carvão ativado como meio suporte

Response of the fish assemblage to a saltwater barrier and paper mill effluent in the Lower Neches River (Texas) during drought

Contact Info

Product

Resources

About