Insights into the resources generation from pulp and paper industry wastes: Challenges, perspectives and innovations

Mandeep,; Gupta, Guddu Kumar; Shukla, Pratyoosh

doi:10.1016/j.biortech.2019.122496

Cited by 121 publications

(46 citation statements)

References 114 publications

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“…Simultaneously, they are common organic pollutants in the industrial wastewater generated by these fields. They are toxic, causing allergic reactions and carcinogenesis, and also affect biological photosynthesis [1][2][3]. Dye molecules contain conjugated structures that can absorb visible light, such as aromatic structures, and some auxochrome groups, including sulfo and amino groups.…”

Section: Introductionmentioning

confidence: 99%

Biochar Derived from Agricultural Wastes as a Means of Facilitating the Degradation of Azo Dyes by Sulfides

et al. 2021

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Dyes are common contaminants, some of which are teratogenic, carcinogenic, and causative of ecological damage, and dye wastewater often contains toxic sulfides. Biochar has been widely used for the adsorption and catalysis degradation of pollutants, including dyes and sulfides, due to its abundant surface functional groups and large specific surface area. Therefore, the simultaneous treatment of dyes and sulfides with biochar may be a feasible, effective, and novel solution. This study sought to utilize low-cost, environmentally friendly, and widely sourced biochar materials from agricultural wastes such as corn stalk, rice chaff, and bean stalk to promote the reduction of dyes by sulfides. Through the action of different biochars, sulfides can rapidly decompose and transform oxidizing dyes. The RCB800 (rice chaff biochar material prepared at 800 °C) was observed to have the best effect, with a degradation rate of 96.6% in 40 min and 100% in 50 min for methyl orange. This series of materials are highly adaptable to temperature and pH, and the concentration of sulfides has a significant effect on degradation rates. Compared with commercial carbon materials, biochars are similar in terms of their catalytic mechanism and are more economical. Scanning electron microscopy, transmission electron microscopy, and nitrogen adsorption and desorption characterization results indicated that biochar contains more pores, including mesopores, and a sufficient specific surface area, both of which are conducive to the combination of sulfides and dyes with biochar. X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy showed that there are oxygen-containing functional groups (examples include quinones and carboxyl groups) on the surface of biochar that promote the reaction of sulfide and dye. The formation of active polysulfides also potentially plays an important role in the degradation reaction. This article outlines a new method for improving the degradation efficiency of azo dyes and sulfides via biochar materials derived from widely sourced agricultural wastes.

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Section: Introductionmentioning

confidence: 99%

Biochar Derived from Agricultural Wastes as a Means of Facilitating the Degradation of Azo Dyes by Sulfides

et al. 2021

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“…Using this approach, we can reduce waste and generate useful products simultaneously. This practice is widely used in industries for the production of adsorbents, clinker, biogas, biohydrogen, biomolecules, and many more products (Gupta and Shukla, 2020). Nanotechnology has helped in the enhancement of the production rate for efficient conversion of waste into resources.…”

Section: Valorization Of Waste Using Microorganisms and Nanotechnologymentioning

confidence: 99%

“…The treatment of these industrial effluents is required in a strict and cost-effective way for the sustainable development of industries and the environment. Various electrochemical, advanced oxidation processes, and valorization techniques have been applied to reduce the toxicity of effluents from wastewater and for making its use sustainable (Gupta and Shukla, 2020). But these techniques are not cost effective for all industries.…”

Section: Introductionmentioning

confidence: 99%

Microbial Nanotechnology for Bioremediation of Industrial Wastewater

Mandeep

Shukla

2020

Front. Microbiol.

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Pollutant removal from industrial effluents is a big challenge for industries. These pollutants pose a great risk to the environment. Nanotechnology can reduce the expenditure made by industries to mitigate these pollutants through the production of eco-friendly nanomaterials. Nanomaterials are gaining attention due to their enhanced physical, chemical, and mechanical properties. Using microorganisms in the production of nanoparticles provides an even greater boost to green biotechnology as an emerging field of nanotechnology for sustainable production and cost reduction. In this mini review, efforts are made to discuss the various aspects of industrial effluent bioremediation through microbial nanotechnology integration. The use of enzymes with nanotechnology has produced higher activity and reusability of enzymes. This mini review also provides an insight into the advantages of the use of nanotechnology as compared to conventional practices in these areas.

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“…Cellulose pretreatment can be done through several methods, like alkaline-acid pretreatment, enzymatic pretreatment, and ionic pretreatment, to remove the unwanted materials and enhance the nano-cellulosic properties. In the alkaline-acid treatment methods, the lignocellulosic compound is processed via alkali chemicals (Gupta et al, 2020a). These methods cause fibrillation and modified the surface properties of native fibers which way-out the hemicellulose, lignin, and waxes (Phanthong et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Lignocellulosic Biomass for the Synthesis of Nanocellulose and Its Eco-Friendly Advanced Applications

Gupta¹,

Shukla²

2020

Front. Chem.

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Nanocellulose is a unique and natural compound extracted from native cellulose using different extraction techniques. Nanocellulose is currently attracting attention due to its excellent properties such as special surface chemistry, exceptional physical and chemical strength, and rich hydroxyl groups for modification. In addition, its significant biological properties, like biodegradability, biocompatibility, and non-toxicity, accompanied by being environmentally friendly, are added advantages. The current review is focused on the lignocellulosic biomass processing methods for nanocellulose production and their usage for eco-friendly and environmental sustainability. We have also described insights into different techniques by which cellulosic materials can be changed into cellulose nanofibers (CNFs) and cellulose nanocrystals (CNCs). Lastly, we further discussed how nano-cellulosic materials are being used in a variety of industries such as the food sector, biomedical hygiene products, health care, water purification, and sensors. In the review, the unique uses of nanocelluloses in the production of nanocomposite materials, like flexible supercapacitor and polymer matrix, toward minimizing the utilization of global fossil energy and environmental pollution are envisaged. Finally, the significant application of nanomaterials in the areas of packaging industries, health and hygienic sector, cosmetics, and other important sectors are discussed. In the aspect of techno-economically feasibility, nano-cellulose-based materials may prove to be outstanding, environment friendly, and mitigate effluent load.

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Insights into the resources generation from pulp and paper industry wastes: Challenges, perspectives and innovations

Cited by 121 publications

References 114 publications

Biochar Derived from Agricultural Wastes as a Means of Facilitating the Degradation of Azo Dyes by Sulfides

Biochar Derived from Agricultural Wastes as a Means of Facilitating the Degradation of Azo Dyes by Sulfides

Microbial Nanotechnology for Bioremediation of Industrial Wastewater

Lignocellulosic Biomass for the Synthesis of Nanocellulose and Its Eco-Friendly Advanced Applications

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