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Bhatt P, Bhandari G, Bhatt K, Simsek H. Microalgae-based removal of pollutants from wastewaters: Occurrence, toxicity and circular economy. CHEMOSPHERE 2022; 306:135576. [PMID: 35803375 DOI: 10.1016/j.chemosphere.2022.135576] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 06/06/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
The natural and anthropogenic sources of water bodies are contaminated with diverse categories of pollutants such as antibiotics, pharmaceuticals, pesticides, heavy metals, organic compounds, and other industrial chemicals. Depending on the type and the origin of the pollutants, the degree of contamination can be categorized into lower to higher concentrations. Therefore, the removal of hazardous chemicals from the environment is an important aspect. The physical, chemical and biological approaches have been developed and implemented to treat wastewaters. The microbial and algal treatment methods have emerged as a growing field due to their eco-friendly and sustainable approach. Particularly, microalgae emerged as a potential organism for the treatment of contaminated water bodies. The microalgae of the genera Chlorella, Anabaena, Ankistrodesmus, Aphanizomenon, Arthrospira, Botryococcus, Chlamydomonas, Chlorogloeopsis, Dunaliella, Haematococcus, Isochrysis, Nannochloropsis, Porphyridium, Synechococcus, Scenedesmus, and Spirulina reported for the wastewater treatment and biomass production. Microalgae have the potential for adsorption, bioaccumulation, and biodegradation. The microalgal strains can mitigate the hazardous chemicals via their diverse cellular mechanisms. Applications of the microalgae strains were found to be effective for sustainable developments and circular economy due to the production of biomass with the utilization of pollutants.
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Affiliation(s)
- Pankaj Bhatt
- Department of Agricultural & Biological Engineering, Purdue University, West Lafayette, IN, 47906, USA.
| | - Geeta Bhandari
- Department of Biosciences, Swami Rama Himalayan University, Dehradun, 248016, India
| | - Kalpana Bhatt
- Department of Food Science, Purdue University, West Lafayette, IN, USA
| | - Halis Simsek
- Department of Agricultural & Biological Engineering, Purdue University, West Lafayette, IN, 47906, USA.
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Sharma T, Sharma A, Xia CL, Lam SS, Khan AA, Tripathi S, Kumar R, Gupta VK, Nadda AK. Enzyme mediated transformation of CO 2 into calcium carbonate using purified microbial carbonic anhydrase. ENVIRONMENTAL RESEARCH 2022; 212:113538. [PMID: 35640707 DOI: 10.1016/j.envres.2022.113538] [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: 02/16/2022] [Revised: 05/13/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
In this study, a bacterial carbonic anhydrase (CA) was purified from Corynebacterium flavescens for the CO2 conversion into CaCO3. The synthesized CaCO3 can be utilized in the papermaking industry as filler material, construction material and in steel industry. Herein, the CA was purified by using a Sephadex G-100 column chromatography having 29.00 kDa molecular mass in SDS-PAGE analysis. The purified CA showed an optimal temperature of 35 °C and pH 7.5. In addition, a kinetic study of CA using p-NPA as substrate showed Vmax (166.66 μmoL/mL/min), Km (5.12 mM), and Kcat (80.56 sec-1) using Lineweaver Burk plot. The major inhibitors of CA activity were Na2+, K+, Mn2+, and Al3+, whereas Zn2+ and Fe2+ slightly enhanced it. The purified CA showed a good efficacy to convert the CO2 into CaCO3 with a total conversion rate of 65.05 mg CaCO3/mg of protein. In silico analysis suggested that the purified CA has conserved Zn2+ coordinating residues such as His 111, His 113, and His 130 in the active site center. Further analysis of the CO2 binding site showed conserved residues such as Val 132, Val 142, Leu 196, Thr 197, and Val 205. However, a substitution has been observed where Trp 208 of its closest structural homolog T. ammonificans CA is replaced with Arg 207 of C. flavescens. The presence of a hydrophilic mutation in the CO2 binding hydrophobic region is a further subject of investigation.
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Affiliation(s)
- Tanvi Sharma
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, Solan, Himachal Pradesh, 173 234, India
| | - Abhishek Sharma
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, 171 005, India
| | - Chang Lei Xia
- Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China
| | - Su Shiung Lam
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Azmat Ali Khan
- Pharmaceutical Biotechnological Laboratory, Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Sonam Tripathi
- Department of Environmental Microbiology, School for Environmental Sciences, Babasaheb Bhimrao Ambedkar Central University, Lucknow, Uttar Pradesh, 226025, India
| | - Raj Kumar
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, Solan, Himachal Pradesh, 173 234, India
| | - Vijai Kumar Gupta
- Biorefining and Advanced Materials Research Center, Scotland's Rural College (SRUC), Kings Buildings, West Mains Road, Edinburgh, EH9 3JG, UK
| | - Ashok Kumar Nadda
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, Solan, Himachal Pradesh, 173 234, India.
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Abstract
The use of organic waste as fuel for energy generation will reduce the great environmental problems currently caused by the consumption of fossil sources, giving agribusiness companies a profitable way to use their waste. In this research, tomato waste with different percentages of sucrose (0-target, 5, 10, and 20%) was used in microbial fuel cells manufactured on a laboratory scale with zinc and copper electrodes, managing to generate maximum peaks of voltage and a current of 1.08 V and 6.67 mA in the cell with 20% sucrose, in which it was observed that the optimum operating pH was 5.29, while the MFC with 0% (target) sucrose generated 0.91 V and 3.12 A on day 13 with a similar pH, even though all the cells worked in an acidic pH. Likewise, the cell with 20% sucrose had the lowest internal resistance (0.148541 ± 0.012361 KΩ) and the highest power density (224.77 mW/cm2) at a current density of 4.43 mA/cm2, while the MFC with 0% sucrose generated 160.52 mW/cm2 and 4.38 mA/cm2 of power density and current density, respectively, with an internal resistance of 0.34116 ± 0.2914 KΩ. In this sense, the FTIR (Fourier-transform infrared spectroscopy) of all the substrates used showed a high content of phenolic compounds and carboxylate acids. Finally, the MFCs were connected in a series and managed to generate a voltage of 3.43 V, enough to light an LED (green). These results give great hope to companies and society that, in the near future, this technology can be taken to a larger scale.
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Li X, Meng L, Zhang Y, Qin Z, Meng L, Li C, Liu M. Research and Application of Polypropylene Carbonate Composite Materials: A Review. Polymers (Basel) 2022; 14:polym14112159. [PMID: 35683832 PMCID: PMC9182813 DOI: 10.3390/polym14112159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/16/2022] [Accepted: 05/19/2022] [Indexed: 02/01/2023] Open
Abstract
The greenhouse effect and plastic pollution caused by the accumulation of plastics have led to a global concern for environmental protection, as well as the development and application of biodegradable materials. Polypropylene carbonate (PPC) is a biodegradable polymer with the function of “carbon sequestration”, which has the potential to mitigate the greenhouse effect and the plastic crisis. It has the advantages of good ductility, oxygen barrier and biocompatibility. However, the mechanical and thermal properties of PPC are poor, especially the low thermal degradation temperature, which limits its industrial use. In order to overcome this problem, PPC can be modified using environmentally friendly materials, which can also reduce the cost of PPC-based products to a certain extent and enhance their competitiveness in terms of improving their mechanical and thermal properties. In this paper, we present different perspectives on the synthesis, properties, degradation, modification and post-modification applications of PPC. The modification part mainly introduces the influence of inorganic materials, natural polymer materials and degradable polymers on the performance of PPC. It is hoped that this work will serve as a reference for the early promotion of PPC.
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Affiliation(s)
- Xiangrui Li
- School of Materials Science and Engineering, Beihua University, Jilin City 132013, China; (X.L.); (L.M.); (Y.Z.); (Z.Q.)
| | - Lingyu Meng
- School of Materials Science and Engineering, Beihua University, Jilin City 132013, China; (X.L.); (L.M.); (Y.Z.); (Z.Q.)
| | - Yinliang Zhang
- School of Materials Science and Engineering, Beihua University, Jilin City 132013, China; (X.L.); (L.M.); (Y.Z.); (Z.Q.)
| | - Zexiu Qin
- School of Materials Science and Engineering, Beihua University, Jilin City 132013, China; (X.L.); (L.M.); (Y.Z.); (Z.Q.)
| | - Lipeng Meng
- Jilin Forestry Research Institute, Jilin City 130117, China;
| | - Chunfeng Li
- School of Materials Science and Engineering, Beihua University, Jilin City 132013, China; (X.L.); (L.M.); (Y.Z.); (Z.Q.)
- Correspondence: (C.L.); (M.L.)
| | - Mingli Liu
- School of Materials Science and Engineering, Beihua University, Jilin City 132013, China; (X.L.); (L.M.); (Y.Z.); (Z.Q.)
- Correspondence: (C.L.); (M.L.)
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Sharma T, Xia C, Sharma A, Raizada P, Singh P, Sharma S, Sharma P, Kumar S, Lam S, Nadda AK. Mechano-chemical and biological energetics of immobilized enzymes onto functionalized polymers and their applications. Bioengineered 2022; 13:10518-10539. [PMID: 35443858 PMCID: PMC9208500 DOI: 10.1080/21655979.2022.2062526] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/17/2022] [Accepted: 03/29/2022] [Indexed: 12/23/2022] Open
Abstract
Enzymes of commercial importance, such as lipase, amylase, laccase, phytase, carbonic anhydrase, pectinase, maltase, glucose oxidase etc., show multifunctional features and have been extensively used in several fields including fine chemicals, environmental, pharmaceutical, cosmetics, energy, food industry, agriculture and nutraceutical etc. The deployment of biocatalyst in harsh industrial conditions has some limitations, such as poor stability. These drawbacks can be overcome by immobilizing the enzyme in order to boost the operational stability, catalytic activity along with facilitating the reuse of biocatalyst. Nowadays, functionalized polymers and composites have gained increasing attention as an innovative material for immobilizing the industrially important enzyme. The different types of polymeric materials and composites are pectin, agarose, cellulose, nanofibers, gelatin, and chitosan. The functionalization of these materials enhances the loading capacity of the enzyme by providing more functional groups to the polymeric material and hence enhancing the enzyme immobilization efficiency. However, appropriate coordination among the functionalized polymeric materials and enzymes of interest plays an important role in producing emerging biocatalysts with improved properties. The optimal coordination at a biological, physical, and chemical level is requisite to develop an industrial biocatalyst. Bio-catalysis has become vital aspect in pharmaceutical and chemical industries for synthesis of value-added chemicals. The present review describes the current advances in enzyme immobilization on functionalized polymers and composites. Furthermore, the applications of immobilized enzymes in various sectors including bioremediation, biosensor and biodiesel are also discussed.
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Affiliation(s)
- Tanvi Sharma
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Solan, India
| | - Changlei Xia
- Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry UniversityCo-Innovation, Nanjing,Jiangsu, China
| | - Abhishek Sharma
- Department of Biotechnology, Himachal Pradesh University, Shimla, India
| | - Pankaj Raizada
- School of Advanced Chemical Sciences, Shoolini University, Solan, India
| | - Pardeep Singh
- School of Advanced Chemical Sciences, Shoolini University, Solan, India
| | - Swati Sharma
- University Institute of Biotechnology, Chandigarh University, Gharuan Mohali, India
| | - Pooja Sharma
- CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nagpur, India
| | - Sunil Kumar
- CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nagpur, India
| | - SuShiung Lam
- Higher Institution Centre of Excellence (Hicoe), Institute of Tropical Aquaculture and Fisheries (Akuatrop), Universiti Malaysia Terengganu, Kuala Nerus, Malaysia
| | - Ashok Kumar Nadda
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Solan, India
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