Removal of color from pulp and paper mill wastewater- methods and techniques- A review

Kumar, Amit; Srivastava, Nirmal Kumar; Gera, Poonam

doi:10.1016/j.jenvman.2021.113527

Cited by 39 publications

(20 citation statements)

References 84 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The low value for both opacity tests on the mechanical laboratory paper handsheet was due to the fact that the majority of the original lignin in the raw pulp was still present [ 56 ]. The lignin substrate contains many chromophore groups, such as quinoids, catechols, aromatic ketones, stilbenes, conjugated carbonyls with phenolics, and metal complexes, and some additional chromophores within paper can be oxidised from leucochromophores and remnant carbohydrates [ 57 , 58 , 59 , 60 , 61 ]. Chromophores are coloured substances with a high degree of stability that reduce brightness in pulp and fibre [ 62 , 63 ].…”

Section: Resultsmentioning

confidence: 99%

Valorisation of Underutilized Grass Fibre (Stem) as a Potential Material for Paper Production

et al. 2022

View full text Add to dashboard Cite

An integrated and feasible approach was proposed using the underutilized grass fibre (stem) derived from Napier grass and sugarcane for paper production in this study. To enhance paper strength, pre-hydrolysis and beating techniques have been used to improve the chemical pulps and mechanical pulping process, respectively. Napier grass and sugarcane are promising non-wood sources for pulp production, owing to their high cellulose and low lignin and extractive content. With the additional mild alkaline pre-treatment to the mechanical pulping process, the lignin content was greatly reduced. The results reveal that the mechanical pulping with alkaline pre-treatment may indeed potentially replace the most prevalent pulping process (chemical pulping). As evidenced by the paper strength properties, mechanical pulping is far more suitable for grass-type biomass, particularly Napier grass, which had a folding endurance capability five times greater than chemical pulping. Furthermore, the remaining high hemicellulose content from mechanical pulping contributed to a high pulp yield, while also facilitating the fibrillation on the sugarcane’s laboratory paper handsheet. The findings also demonstrated that the additional beating process from chemical pulping causes the fibres to be drawn toward each other, resulting in a more robust fibre network that contributes to good paper strength. Consequently, this work sheds new light on the development of advanced paper derived from grass fibre.

show abstract

Section: Resultsmentioning

confidence: 99%

Valorisation of Underutilized Grass Fibre (Stem) as a Potential Material for Paper Production

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The most applied microalgae species in the works was Chlorella vulgaris and Scenedesmus sp. The works indicate good conditions of the algae biomass production, with high protein and lipid content, which could be used for bioenergy and biofuel production [39], [40], such as biodiesel and bioethanol, but also for energy, animal feed, and fertilizers production.…”

Section: Application Of Microalgae-bacteria Consortium Fiberswaste-ba...mentioning

confidence: 96%

Opportunities for Microalgae-Bacteria Consortium Application to the Treatment of Effluents Generated in Fiber-Waste-Based Recycling Processes

Sátiro

Leitão

Gomes

et al. 2022

Kms

View full text Add to dashboard Cite

Technologies based on microalgae-bacteria seem to be sustainable options for wastewater treatment and reuse, with lower costs than conventional biological treatment technologies. Furthermore, they can generate added-value products produced from algae biomass. Among other advantages, the consortium bacteriaalgae produce photosynthetic oxygen through the microalgae, which can be used by aerobic bacteria for oxidizing organic matter and nitrogen, thus reducing the need for introducing artificial oxygen. In this review paper, the main systems that use microalgaebacteria consortium are discussed. Microalgae-bacteria present advantages in the removal of organics, nitrogen and phosphorus, when compared with conventional biological treatment systems (e.g., activated sludge, percolating filters and ponds), and are able to produce final effluents for reuse (e.g., in agricultural irrigation, industry or aquifer recharge) and excess of microalgae that can be converted to added-value products such as biogas and biofuels. Attention is given to the innovative aspects of applying photobioreators to the treatment and reuse of pulp and paper effluents and fiber-waste-based recycling wastewaters, which seems to open a new opportunity for the pulp, paper and recycling paper industries. Keywords: fiber-waste-based industry, microalgae-bacteria consortium, removal of nutrients, wastewater treatment

show abstract

“…There remain three well-known approaches aimed at making free radicals deprived of by means of light energy. One process uses Fe2+ ions by way of the catalyst while additional two processes include the reaction of ozone [34] .…”

Section: Non-photo Oxidation Processmentioning

confidence: 99%

A critical review of organic pollutants in Refinery wastewater by advanced oxidation processes

Al-Sadoon¹,

Salman²,

Mohammed³

2022

JUAPS

View full text Add to dashboard Cite

Advanced oxidation processes (AOPs), for instance Ozone, Fenton process, photo Fenton, photolysis, photo-catalysis, and photolysis of hydrogen peroxide and photolysis of ozone have remained inspected widely aimed at the elimination of a wide variety of organic pollutants (OPs). AOP without UV might not attain complete elimination of a comprehensive group of OPS. When combined with UV, AOPs produce additional free radicals, consequently execution improved squalor of the OPS. This review briefly deliberates the individual AOPs and their limits in the direction of the squalor of OPS comprising diverse useful collections. It too categorizes AOPs and lengthily clarifies their efficiency aimed at the squalor of a wide variety of OPS. Underneath suitable circumstances, AOPs not solitary initiate squalor nonetheless might too principal to whole mineralization. Numerous issues can affect the competence of procedures counting the chemistry of water and the organic molecular structure for instance, the attendance of organic content in water can have an important influence. In general, these organic also change toward high redox possible radicals upon crash with additional reactive species and upsurge the rates of reaction, or might performance by way of radical scavengers and reduction the development competence .

show abstract

Removal of color from pulp and paper mill wastewater- methods and techniques- A review

Cited by 39 publications

References 84 publications

Valorisation of Underutilized Grass Fibre (Stem) as a Potential Material for Paper Production

Valorisation of Underutilized Grass Fibre (Stem) as a Potential Material for Paper Production

Opportunities for Microalgae-Bacteria Consortium Application to the Treatment of Effluents Generated in Fiber-Waste-Based Recycling Processes

A critical review of organic pollutants in Refinery wastewater by advanced oxidation processes

Contact Info

Product

Resources

About