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Gupta GK, Kapoor RK, Chhabra D, Bhardwaj NK, Shukla P. Synergistic effect of cellulo-xylanolytic and laccase enzyme consortia for improved deinking of waste papers. BIORESOURCE TECHNOLOGY 2024:131173. [PMID: 39084535 DOI: 10.1016/j.biortech.2024.131173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 07/25/2024] [Accepted: 07/27/2024] [Indexed: 08/02/2024]
Abstract
This study reports the cellulo-xylanolytic cocktail production from Hypocrea lixii GGRK4 using multi-objective genetic algorithm-artificial neural network tool, resulting in 8.32 ± 1.07 IU/mL, 51.53 ± 3.78 IU/mL activity of CMCase and xylanase, respectively with more than 85 % residual activity at 60 °C and pH 6.0. Interestingly, metal ions viz. K+ and Ca2+ stimulated the enzyme activity, whereas Fe2+ and Cu2+ reduced the activity. Significant amounts of hydrophobic compounds, chromophores, and phenolics were released after wastepapers deinking. The deinking efficiency of 73.60 ± 2.45 % and 38.60 ± 1.34 % was obtained for photocopier paper and newspaper, respectively, whereas brightness of 89.90 ± 2.10 % ISO and 44.90 ± 1.63 % ISO was reported for both types of waste papers. The physical strength of deinked photocopier paper and newspapers, i.e., tensile index (3.10 and 0.50 %), tearing index (7.10 and 4.83 %), and burst factor (8.61) were enhanced whereas double fold property was decreased proving wastepaper reusability. This consortium showed effective and significant enzymatic deinking efficiency for recycled wastepapers.
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Affiliation(s)
- Guddu Kumar Gupta
- Enzyme and Fermentation Technology Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Rajeev Kumar Kapoor
- Enzyme and Fermentation Technology Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Deepak Chhabra
- Department of Mechanical Engineering, University Institute of Engineering and Technology (UIET), Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Nishi Kant Bhardwaj
- Avantha Centre for Industrial Research and Development, Paper Mill Campus, Yamuna Nagar, India; Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Paper Mill Road, Saharanpur, UP 247001, India
| | - Pratyoosh Shukla
- Enzyme Technology and Protein Bioinformatics Laboratory, School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India.
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Pandey S, Gupta S. Exploring laccase: a sustainable enzymatic solution for the paper recycling domain. Arch Microbiol 2024; 206:211. [PMID: 38602547 DOI: 10.1007/s00203-024-03927-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 03/03/2024] [Accepted: 03/08/2024] [Indexed: 04/12/2024]
Abstract
The global advocacy of resource conservation and waste management emphasizes the significance of sustainable practices, particularly in sectors such as paper manufacturing and recycling. Currently, conventional chemical methods are predominant for paper production, necessitating the use of substantial amount of toxic chemicals. This chemical-intensive approach compromises the recycled fiber quality, generates hazardous effluent causing serious ecological threats which triggers regulatory complexities for the mills. To address these challenges modern research suggests adopting sustainable eco-friendly practices such as employing enzymes. This review aims to explore the applicability of 'laccase' enzyme for paper recycling, investigating its properties and contribution to improved recycling practices. By delving into the potential application of laccase integration into the papermaking process, this article sheds light on the limitations inherent in traditional methods surmounted within both research and translational landscapes. Culture and process optimization studies, supporting the technological improvements and the future prospects have been documented.
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Affiliation(s)
- Sheetal Pandey
- Department of Bioscience and Biotechnology, Banasthali Vidyapith, Tonk, Newai, Rajasthan, 304022, India
| | - Sarika Gupta
- Department of Bioscience and Biotechnology, Banasthali Vidyapith, Tonk, Newai, Rajasthan, 304022, India.
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Dixit M, Chhabra D, Shukla P. Optimization of endoglucanase-lipase-amylase enzyme consortium from Thermomyces lanuginosus VAPS25 using Multi-Objective genetic algorithm and their bio-deinking applications. BIORESOURCE TECHNOLOGY 2023; 370:128467. [PMID: 36509307 DOI: 10.1016/j.biortech.2022.128467] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 12/03/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
In this study, the enzyme consortium of endoglucanase, lipase, and amylase was obtained and optimized using artificial intelligence-based tools. After optimization using a multi-objective genetic algorithm and artificial neural network, the enzyme activity was 8.8 IU/g, 153.68 U/g, and 19.2 IU/g for endoglucanase, lipase, and amylase, respectively, using Thermomyces lanuginosus VAPS25. The highest enzyme activity was obtained at parameters 77.69% moisture content, 52.7 °C temperature, 98 h, and 3.1 eucalyptus leaves: wheat bran ratio. The endoglucanase-lipase-amylase (END-LIP-AMY) enzyme consortium showed reliable characteristics in terms of catalytic activity at 50-80 °C and pH 6.0-9.0. The increase in deinking efficiency of 27.8% and 11.1% were obtained compared to control for mixed office waste and old newspaper, respectively, using the enzyme consortium. The surface chemical composition and fiber morphology of deinked pulp was investigated using Attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) and Scanning electron microscopy (SEM).
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Affiliation(s)
- Mandeep Dixit
- Department of Microbiology, Maharshi Dayanand University, Rohtak-124001, Haryana, India
| | - Deepak Chhabra
- Department of Mechanical Engineering, University Institute of Engineering & Technology, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Pratyoosh Shukla
- Department of Microbiology, Maharshi Dayanand University, Rohtak-124001, Haryana, India; Enzyme Technology and Protein Bioinformatics Laboratory, School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India.
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Mondal S, Biswal D, Pal K, Rakshit S, Kumar Halder S, Mandavgane SA, Bera D, Hossain M, Chandra Mondal K. Biodeinking of waste papers using combinatorial fungal enzymes and subsequent production of butanol from effluent. BIORESOURCE TECHNOLOGY 2022; 353:127078. [PMID: 35395367 DOI: 10.1016/j.biortech.2022.127078] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/23/2022] [Accepted: 03/24/2022] [Indexed: 06/14/2023]
Abstract
The present study aimed to enzymatic deinking of waste papers and to valorize the effluent for biobutanol production. Application of fungal enzymatic cocktail (cellulase, amylase, xylanase, pectinase, lipase, and ligninase) on office used paper, newspaper, and ballpen written paper leading to improvement in brightness (84.91, 72.51, 76.69 % ISO), InKd (82.89, 68.95, 76.49%), κ-number (12.9, 13.6, and 13.1), opacity (27.91, 30.07, and 2.85%), tensile strength (49.24, 45.31, and 46.98 Nm/g), respectively and indices were consistent with chemical treated pulps. The quality of effluent generated during enzymatic deinking in respect to BOD and COD level was eco-friendlier than the chemical process. The enzyme-treated effluent was employed as supporting substrate for butanol (18.4 g/l) production by Clostridium acetobutylicum ATCC824. Material balance and life cycle assessment of the whole processes were evaluated to validate its industrial and environmental relevance.
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Affiliation(s)
- Subhadeep Mondal
- Center for Life Sciences, Vidyasagar University, Midnapore 721102, West Bengal, India
| | - Divyajyoti Biswal
- Visvesvaraya National Institute of Technology, Nagpur 440010, Maharashtra, India
| | - Kalyanbrata Pal
- Department of Microbiology, Vidyasagar University, Midnapore 721102, West Bengal, India
| | - Subham Rakshit
- Department of Microbiology, Vidyasagar University, Midnapore 721102, West Bengal, India
| | - Suman Kumar Halder
- Department of Microbiology, Vidyasagar University, Midnapore 721102, West Bengal, India
| | - Sachin A Mandavgane
- Visvesvaraya National Institute of Technology, Nagpur 440010, Maharashtra, India
| | - Debabrata Bera
- Food Technology & Bio-Chemical Engineering, Jadavpur University 700032, Kolkata, India
| | - Maidul Hossain
- Department of Chemistry, Vidyasagar University, Midnapore 721102, West Bengal, India
| | - Keshab Chandra Mondal
- Department of Microbiology, Vidyasagar University, Midnapore 721102, West Bengal, India.
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Sango C, Pathak P, Bhardwaj NK, Dalal S, Sharma J. Partial purification of bacterial cellulo-xylanolytic enzymes and their application in deinking of photocopier waste paper. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:61317-61328. [PMID: 34173149 DOI: 10.1007/s11356-021-14709-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 05/31/2021] [Indexed: 06/13/2023]
Abstract
The potential of alkaline cellulo-xylanolytic enzymes from non-pathogenic Bacillus subtilis strain was tested for deinking of photocopier waste paper. Cellulase and xylanase play a crucial role in deinking of different types of waste paper. Partial purification of cellulo-xylanolytic enzymes was carried out using ultrafiltration followed by ammonium sulfate precipitation. The ultrafiltered enzyme was used for deinking the photocopier waste paper along with chemical deinking. An enzyme dose of 0.6 IU/g and reaction time of 60 min for ultrafiltered cellulo-xylanolytic enzyme significantly increased deinking efficiency, tear index (9.52%) and folding endurance (5±2%) as compared to chemical deinking. There was improvement in strength properties such as tear index and double-fold along with freeness of pulp (18%). There was slight decrease in tensile index (0.6%) and burst index (16%) while ISO brightness remained unaffected. Enzymatic deinking (74.3%) by ultrafiltered cellulo-xylanolytic from Bacillus subtilis was found significant over conventional chemical deinking.
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Affiliation(s)
- Chakarvati Sango
- Department of Biotechnology, Kurukshetra University, Kurukshetra, Haryana, -136 119, India
| | - Puneet Pathak
- Avantha Centre for Industrial Research & Development, Paper Mill Campus, Yamuna Nagar, Haryana, -135 001, India
| | - Nishi K Bhardwaj
- Avantha Centre for Industrial Research & Development, Paper Mill Campus, Yamuna Nagar, Haryana, -135 001, India
| | - Sunita Dalal
- Department of Biotechnology, Kurukshetra University, Kurukshetra, Haryana, -136 119, India
| | - Jitender Sharma
- Department of Biotechnology, Kurukshetra University, Kurukshetra, Haryana, -136 119, India.
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Gupta GK, Dixit M, Kapoor RK, Shukla P. Xylanolytic Enzymes in Pulp and Paper Industry: New Technologies and Perspectives. Mol Biotechnol 2021; 64:130-143. [PMID: 34580813 DOI: 10.1007/s12033-021-00396-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/08/2021] [Indexed: 11/26/2022]
Abstract
The pulp and paper industry discharges massive amount of wastewater containing hazardous organochlorine compounds released during different processing stages. Therefore, some cost-effective and nonpolluting practices such as enzymatic treatments are required for the potential mitigation of effluents released in the environment. Various xylanolytic enzymes such as xylanases, laccases, cellulases and hemicellulases are used to hydrolyse raw materials in the paper manufacturing industry. These enzymes are used either individually or in combination, which has the efficient potential to be considered for bio-deinking and bio-bleaching components. They are highly dynamic, renewable, and high in specificity for enhancing paper quality. The xylanase act on the xylan and cellulases act on the cellulose fibers, and thus increase the bleaching efficacy of paper. Similarly, hemicellulase enzyme like endo-xylanases, arabinofuranosidase and β-D-xylosidases have been described as functional properties towards the biodegradation of biomass. In contrast, laccase enzymes act as multi-copper oxidoreductases, bleaching the paper by the oxidation and reduction process. Laccases possess low redox potential compared to other enzymes, which need some redox mediators to catalyze. The enzymatic process can be affected by various factors such as pH, temperature, metal ions, incubation periods, etc. These factors can either increase or decrease the efficiency of the enzymes. This review draws attention to the xylanolytic enzyme-based advanced technologies for pulp bleaching in the paper industry.
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Affiliation(s)
- Guddu Kumar Gupta
- Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Mandeep Dixit
- Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Rajeev Kumar Kapoor
- Enzyme and Fermentation Technology Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Pratyoosh Shukla
- Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India.
- School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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Singh A, Varghese LM, Yadav RD, Mahajan R. A pollution reducing enzymatic deinking approach for recycling of mixed office waste paper. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:45814-45823. [PMID: 32803575 DOI: 10.1007/s11356-020-10440-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 08/06/2020] [Indexed: 06/11/2023]
Abstract
The efficiency of xylano-pectinolytic enzymes, co-produced by a single microbial strain Bacillus pumilus, was analysed for the recycling of mixed office waste paper through deinking and compared with the alkaline chemical deinking method. Enzymes showed maximum deinking at pH 8.5, pulp consistency of 10%, xylanase-pectinase dose of 12 and 4 IU per gram pulp, respectively, after 120 min of deinking period, and temperature at 50 °C. A chemi-enzymatic approach was employed with xylano-pectinolytic enzymes and various concentrations of deinking chemicals, which showed that enzyme-treated mixed office waste pulp requires only 40% chemicals for deinking, in order to get the almost same level of various handsheets properties, as obtained by the chemical method with 100% chemicals. Similarly, the effluent load of BOD and COD contents was also decreased by 17.90 and 19.75%. This combinational approach of deinking significantly improved the various properties of the handsheets and resulted in gain of 7.5, 9.38, 6.33 and 11.65% in tear factor, burst factor, breaking length and viscosity of the handsheets, while the effective residual ink concentration analysis of deinked handsheets of mixed office waste paper showed deinking efficiency of 22.45%, which revealed the removal of ink particles during enzymatic deinking steps.
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Affiliation(s)
- Avtar Singh
- Department of Biotechnology, Kurukshetra University, Kurukshetra, Haryana, 136119, India
- Department of Biological Sciences, Indian Institute of Science Education and Research, Mohali, Punjab, 140306, India
| | - Libin M Varghese
- Department of Biotechnology, Kurukshetra University, Kurukshetra, Haryana, 136119, India
| | - Ravi Dutt Yadav
- Trident Limited, Mansa Road, Dhaula, Barnala, Punjab, 148105, India
| | - Ritu Mahajan
- Department of Biotechnology, Kurukshetra University, Kurukshetra, Haryana, 136119, India.
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Comparative Optimization of Cellulase and Laccase Enzymes in Deinking Process of Used Newspapers. JURNAL KIMIA SAINS DAN APLIKASI 2020. [DOI: 10.14710/jksa.23.10.353-359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The use of enzymes in the bio-deinking process of newspaper waste has promising potential. However, investigations on the concentration of enzyme combinations need to be carried out to obtain the optimum ratio of cellulase and laccase enzymes for the bio-deinking process of recycled newspapers. The mixture of the two enzymes at various ratios was used to remove the ink on paper pulp from used newspapers by mechanical disintegration method treatment and followed by the bio-deinking process in an incubator shaker. The characterization of functional groups, structures, and thermal properties of bio-deinked pulp paper was carried out by FTIR, XRD, DTG/TGA, and an analysis of the degree of brightness to the prepared paper. FTIR results confirmed three main components of papers, such as cellulose, hemicellulose, and lignin. The XRD results showed that the equal ratio of cellulase and laccase enzymes had an effect on a higher crystallinity index, which was 78.8% compared to those obtained from the conventional methods with a crystallinity index of 69.7%. Thermal analysis showed that the optimum combination of both enzymes contributed the most at the highest temperature where the rate of degradation decreased. Brightness analysis showed that bio-deinking had met the quality requirements for newsprint paper in SNI 7273:2008. Our findings show that the combination of cellulase and laccase enzymes at the same ratio can produce optimal bio-deinked pulp for paper fabrication with excellent characteristics in brightness, thermal, and physical properties.
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