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Dr. Sanjeet Mehariya
Sapienza Univeristy of Rome Department of Civil, Constructional and Environmental Engineeering

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Review
Published: 02 August 2021 in Energies
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Crude oil is a major energy source that is exploited globally to achieve economic growth. To meet the growing demands for oil, in an environment of stringent environmental regulations and economic and technical pressure, industries have been required to develop novel oil salvaging techniques. The remaining ~70% of the world’s conventional oil (one-third of the available total petroleum) is trapped in depleted and marginal reservoirs, and could thus be potentially recovered and used. The only means of extracting this oil is via microbial enhanced oil recovery (MEOR). This tertiary oil recovery method employs indigenous microorganisms and their metabolic products to enhance oil mobilization. Although a significant amount of research has been undertaken on MEOR, the absence of convincing evidence has contributed to the petroleum industry’s low interest, as evidenced by the issuance of 400+ patents on MEOR that have not been accepted by this sector. The majority of the world’s MEOR field trials are briefly described in this review. However, the presented research fails to provide valid verification that the microbial system has the potential to address the identified constraints. Rather than promising certainty, MEOR will persist as an unverified concept unless further research and investigations are carried out.

ACS Style

Marzuqa Quraishi; Shashi Bhatia; Soumya Pandit; Piyush Gupta; Vivek Rangarajan; Dibyajit Lahiri; Sunita Varjani; Sanjeet Mehariya; Yung-Hun Yang. Exploiting Microbes in the Petroleum Field: Analyzing the Credibility of Microbial Enhanced Oil Recovery (MEOR). Energies 2021, 14, 4684 .

AMA Style

Marzuqa Quraishi, Shashi Bhatia, Soumya Pandit, Piyush Gupta, Vivek Rangarajan, Dibyajit Lahiri, Sunita Varjani, Sanjeet Mehariya, Yung-Hun Yang. Exploiting Microbes in the Petroleum Field: Analyzing the Credibility of Microbial Enhanced Oil Recovery (MEOR). Energies. 2021; 14 (15):4684.

Chicago/Turabian Style

Marzuqa Quraishi; Shashi Bhatia; Soumya Pandit; Piyush Gupta; Vivek Rangarajan; Dibyajit Lahiri; Sunita Varjani; Sanjeet Mehariya; Yung-Hun Yang. 2021. "Exploiting Microbes in the Petroleum Field: Analyzing the Credibility of Microbial Enhanced Oil Recovery (MEOR)." Energies 14, no. 15: 4684.

Review
Published: 19 April 2021 in Energies
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The increasing world population generates huge amounts of wastewater as well as large energy demand. Additionally, fossil fuel’s combustion for energy production causes the emission of greenhouse gases (GHG) and other pollutants. Therefore, there is a strong need to find alternative green approaches for wastewater treatment and energy production. Microalgae biorefineries could represent an effective strategy to mitigate the above problems. Microalgae biorefineries are a sustainable alternative to conventional wastewater treatment processes, as they potentially allow wastewater to be treated at lower costs and with lower energy consumption. Furthermore, they provide an effective means to recover valuable compounds for biofuel production or other applications. This review focuses on the current scenario and future prospects of microalgae biorefineries aimed at combining wastewater treatment with biofuel production. First, the different microalgal cultivation systems are examined, and their main characteristics and limitations are discussed. Then, the technologies available for converting the biomass produced during wastewater treatment into biofuel are critically analyzed. Finally, current challenges and research directions for biofuel production and wastewater treatment through this approach are outlined.

ACS Style

Sanjeet Mehariya; Rahul Goswami; Pradeep Verma; Roberto Lavecchia; Antonio Zuorro. Integrated Approach for Wastewater Treatment and Biofuel Production in Microalgae Biorefineries. Energies 2021, 14, 2282 .

AMA Style

Sanjeet Mehariya, Rahul Goswami, Pradeep Verma, Roberto Lavecchia, Antonio Zuorro. Integrated Approach for Wastewater Treatment and Biofuel Production in Microalgae Biorefineries. Energies. 2021; 14 (8):2282.

Chicago/Turabian Style

Sanjeet Mehariya; Rahul Goswami; Pradeep Verma; Roberto Lavecchia; Antonio Zuorro. 2021. "Integrated Approach for Wastewater Treatment and Biofuel Production in Microalgae Biorefineries." Energies 14, no. 8: 2282.

Journal article
Published: 12 April 2021 in Chemosphere
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Microalgae is a renewable resource with the potential to replace the fossil-based industrial production of organic chemicals and pharmaceuticals. Moreover, the microalgal biomass contains carotenoids, vitamins, and other biomolecules that are widely used as food supplements. However, the microalgal biomass production, their composition variations, energy-intensive harvesting methods, optimized bio-refinery routes, and lack of techno-economic analysis are the major bottleneck for the life-sized commercialization of this nascent bio-industry. This review discusses the microalgae-derived key bioactive compounds and their applications in different sectors for human health. Furthermore, this review proposes advanced strategies to enhance the productivity of bioactive compounds and highlight the key challenges associated to a safety issue for use of microalgae biomass. It also provides a detailed global scenario and market demand of microalgal bioproducts. In conclusion, this review will provide the useful concept of algal biorefinery for efficiently producing bioactive compounds for industrial application in the nutraceutical and pharmaceutical sector as well as discuss their current market trends. Therefore, efficient algal biorefinery needs to be developed to maintain good human health and environmental sustainability.

ACS Style

Sanjeet Mehariya; Rahul Kumar Goswami; Obulisamy Parthiba Karthikeysan; Pradeep Verma. Microalgae for high-value products: A way towards green nutraceutical and pharmaceutical compounds. Chemosphere 2021, 280, 130553 .

AMA Style

Sanjeet Mehariya, Rahul Kumar Goswami, Obulisamy Parthiba Karthikeysan, Pradeep Verma. Microalgae for high-value products: A way towards green nutraceutical and pharmaceutical compounds. Chemosphere. 2021; 280 ():130553.

Chicago/Turabian Style

Sanjeet Mehariya; Rahul Kumar Goswami; Obulisamy Parthiba Karthikeysan; Pradeep Verma. 2021. "Microalgae for high-value products: A way towards green nutraceutical and pharmaceutical compounds." Chemosphere 280, no. : 130553.

Chapter
Published: 23 February 2021 in Applications of Paleoenvironmental Techniques in Estuarine Studies
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The worldwide growing population needs water security for communities will rise higher in the near future. Natural freshwater sources globally decreasing rapidly; therefore, it is expected that clean water will be secured sincerely for basic human needs (Rezania et al. in J Hazard Mater 318:587–599, 2016c). Due to rapid urbanization and industrialization, wastewater discharge into the environment is increasing day by day. In the last few years, developed countries are updating the environmental policies and dedicated to reducing water pollution as well as developing an efficient and self-sustainable approach for wastewater treatment. For higher efficacy particularly in metropolitan cities, the advancement of recognized traditional treatment methods of water and wastewater is in a need to be further developed.

ACS Style

Sanjeet Mehariya; Prasun Kumar; Tiziana Marino; Patrizia Casella; Angela Iovine; Pradeep Verma; Dino Musmarra; Antonio Molino. Aquatic Weeds: A Potential Pollutant Removing Agent from Wastewater and Polluted Soil and Valuable Biofuel Feedstock. Applications of Paleoenvironmental Techniques in Estuarine Studies 2021, 59 -77.

AMA Style

Sanjeet Mehariya, Prasun Kumar, Tiziana Marino, Patrizia Casella, Angela Iovine, Pradeep Verma, Dino Musmarra, Antonio Molino. Aquatic Weeds: A Potential Pollutant Removing Agent from Wastewater and Polluted Soil and Valuable Biofuel Feedstock. Applications of Paleoenvironmental Techniques in Estuarine Studies. 2021; ():59-77.

Chicago/Turabian Style

Sanjeet Mehariya; Prasun Kumar; Tiziana Marino; Patrizia Casella; Angela Iovine; Pradeep Verma; Dino Musmarra; Antonio Molino. 2021. "Aquatic Weeds: A Potential Pollutant Removing Agent from Wastewater and Polluted Soil and Valuable Biofuel Feedstock." Applications of Paleoenvironmental Techniques in Estuarine Studies , no. : 59-77.

Review
Published: 20 February 2021 in Molecules
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Oxidative stress originates from an elevated intracellular level of free oxygen radicals that cause lipid peroxidation, protein denaturation, DNA hydroxylation, and apoptosis, ultimately impairing cell viability. Antioxidants scavenge free radicals and reduce oxidative stress, which further helps to prevent cellular damage. Medicinal plants, fruits, and spices are the primary sources of antioxidants from time immemorial. In contrast to plants, microorganisms can be used as a source of antioxidants with the advantage of fast growth under controlled conditions. Further, microbe-based antioxidants are nontoxic, noncarcinogenic, and biodegradable as compared to synthetic antioxidants. The present review aims to summarize the current state of the research on the antioxidant activity of microorganisms including actinomycetes, bacteria, fungi, protozoa, microalgae, and yeast, which produce a variety of antioxidant compounds, i.e., carotenoids, polyphenols, vitamins, and sterol, etc. Special emphasis is given to the mechanisms and signaling pathways followed by antioxidants to scavenge Reactive Oxygen Species (ROS), especially for those antioxidant compounds that have been scarcely investigated so far.

ACS Style

Alka Rani; Khem Saini; Felix Bast; Sanjeet Mehariya; Shashi Bhatia; Roberto Lavecchia; Antonio Zuorro. Microorganisms: A Potential Source of Bioactive Molecules for Antioxidant Applications. Molecules 2021, 26, 1142 .

AMA Style

Alka Rani, Khem Saini, Felix Bast, Sanjeet Mehariya, Shashi Bhatia, Roberto Lavecchia, Antonio Zuorro. Microorganisms: A Potential Source of Bioactive Molecules for Antioxidant Applications. Molecules. 2021; 26 (4):1142.

Chicago/Turabian Style

Alka Rani; Khem Saini; Felix Bast; Sanjeet Mehariya; Shashi Bhatia; Roberto Lavecchia; Antonio Zuorro. 2021. "Microorganisms: A Potential Source of Bioactive Molecules for Antioxidant Applications." Molecules 26, no. 4: 1142.

Review
Published: 24 January 2021 in Journal of Clinical Medicine
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Coronavirus Disease 19 (COVID-19), due to severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has become an on-going global health emergency affecting over 94 million cases with more than 2 million deaths globally. Primarily identified as atypical pneumonia, it has developed into severe acute respiratory distress syndrome (ARDS), a multi-organ dysfunction with associated fatality. Ever since its emergence, COVID-19 with its plethora of clinical presentations has signalled its dynamic nature and versatility of the disease process. Being a disease with droplet transmission has now assumed the proportion of a suspected airborne nature which, once proved, poses a Herculean task to control. Because of the wide distribution of the human angiotensin-converting enzyme-2 (hACE2) receptors, known for its transmission, we envisage its multiorgan spread and extensive disease distribution. Thus, an extensive review of the extrapulmonary organotropism of SARS-CoV-2 with organ-specific pathophysiology and associated manifestations like dermatological complications, myocardial dysfunction, gastrointestinal symptoms, neurologic illnesses, hepatic and renal injury is needed urgently. The plausible mechanism of site-specific viral invasion is also discussed to give a comprehensive understanding of disease complexity, to help us to focus on research priorities and therapeutic strategies to counter the disease progression. A note on the latest advancements in vaccine research will enlighten the scientific world and equip it for better preparedness.

ACS Style

Vikram Thakur; Radha Ratho; Pradeep Kumar; Shashi Bhatia; Ishani Bora; Gursimran Mohi; Shailendra Saxena; Manju Devi; Dhananjay Yadav; Sanjeet Mehariya. Multi-Organ Involvement in COVID-19: Beyond Pulmonary Manifestations. Journal of Clinical Medicine 2021, 10, 446 .

AMA Style

Vikram Thakur, Radha Ratho, Pradeep Kumar, Shashi Bhatia, Ishani Bora, Gursimran Mohi, Shailendra Saxena, Manju Devi, Dhananjay Yadav, Sanjeet Mehariya. Multi-Organ Involvement in COVID-19: Beyond Pulmonary Manifestations. Journal of Clinical Medicine. 2021; 10 (3):446.

Chicago/Turabian Style

Vikram Thakur; Radha Ratho; Pradeep Kumar; Shashi Bhatia; Ishani Bora; Gursimran Mohi; Shailendra Saxena; Manju Devi; Dhananjay Yadav; Sanjeet Mehariya. 2021. "Multi-Organ Involvement in COVID-19: Beyond Pulmonary Manifestations." Journal of Clinical Medicine 10, no. 3: 446.

Review
Published: 11 January 2021 in Bioresource Technology
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Polyhydroxyalkanoates (PHAs) are group monomers/heteropolymers that are biodegradable and widely used in biomedical applications. They are considered as alternatives to fossil derived polymers and accumulated by microbes including extremophilic archaea as energy storage inclusions under nutrient limitations. The use of extremophilic archaea for PHA production is an economically viable option for conventional aerobic processes, but less is known about their pathways and PHA accumulation capacities. This review summarized: (a) specific adaptive mechanisms towards extreme environments by extremophiles and specific role of PHAs; (b) understanding of PHA synthesis/metabolism in archaea and specific functional genes; (c) genetic engineering and process engineering approaches required for high-rate PHA production using extremophilic archaea. To conclude, the future studies are suggested to understand the membrane lipids and PHAs accumulation to explain the adaptation mechanism of extremophiles and exploiting it for commercial production of PHAs.

ACS Style

Parthiba Karthikeyan Obulisamy; Sanjeet Mehariya. Polyhydroxyalkanoates from extremophiles: A review. Bioresource Technology 2021, 325, 124653 .

AMA Style

Parthiba Karthikeyan Obulisamy, Sanjeet Mehariya. Polyhydroxyalkanoates from extremophiles: A review. Bioresource Technology. 2021; 325 ():124653.

Chicago/Turabian Style

Parthiba Karthikeyan Obulisamy; Sanjeet Mehariya. 2021. "Polyhydroxyalkanoates from extremophiles: A review." Bioresource Technology 325, no. : 124653.

Preprint
Published: 04 January 2021
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Oxidative stress is an elevated intracellular level of free oxygen radicals that cause lipid peroxidation, protein denaturation, DNA hydroxylation, and apoptosis, ultimately negotiating cells viability. Antioxidants can scavenge such free radicals, thus reducing the oxidative stress and eventually prevent cellular damage. Medicinal plants, fruits, and spices remain the prioritized sources of antioxidants and antimicrobial properties since the time immemorial, but in contrast to plants, microorganisms can be grown at a faster rate under controlled conditions. They are non-toxic, non-carcinogenic, and biodegradable as compared to synthetic antioxidants. Microorganisms including actinomycetes, archaea, bacteria, protozoa, yeast, and fungi are auspicious source of vital bioactive compounds. The list comprises ample of bioactive components from microorganisms. One of them is bacteriocins, which are ribosomally synthesized antimicrobial peptides product of Eurotium sp., Streptomyces parvulus, S. thermophiles, Lactococcus lactis, etc. It has a great potential as next-generation antibiotics targeting the multiple-drug resistant pathogens. Pneumocandins are antifungal lipohexapeptides derived from the fungus Glarea lozoyensis, and inhibit 1,3-β-glucan synthase of the fungal cell wall and act as a precursor for the synthesis of caspofungin. It is widely used against invasive fungal infections and has been recently approved by the FDA. Taxol (paclitaxel), a chemotherapeutic drug derived from the bark of Taxus brevifolia can also be produced by endophytic fungi Taxomyces andreanae and Nodulisporium sylviforme. It is known to inhibit several fungi such as Pythium, Aphanomyces and Phytophthora. Hispidin and its derivate isolated from P. hispidus, reduce inducible nitric oxide synthase (iNOS) expression, obstruct the transcriptional activity of NF-κB, and also decrease the production of reactive oxygen species (ROS) in macrophages. Astaxanthin, known as an “aquatic” carotenoid produced by H. pluvialis, also has excellent ROS quenching activity. This study mainly focuses on fascinating antioxidant and antimicrobial compounds that have been scarcely investigated in microorganisms and discuss the promise and challenges of microorganisms as providers of health benefits.

ACS Style

Alka Rani; Khem Chand Saini; Felix Bast; Sanjeet Mehariya; Shashi Kant Bhatia; Roberto Lavecchia; Antonio Zuorro. Microorganisms: A Potential Source of Bioactive molecules for Antioxidants and Antimicrobial Applications. 2021, 1 .

AMA Style

Alka Rani, Khem Chand Saini, Felix Bast, Sanjeet Mehariya, Shashi Kant Bhatia, Roberto Lavecchia, Antonio Zuorro. Microorganisms: A Potential Source of Bioactive molecules for Antioxidants and Antimicrobial Applications. . 2021; ():1.

Chicago/Turabian Style

Alka Rani; Khem Chand Saini; Felix Bast; Sanjeet Mehariya; Shashi Kant Bhatia; Roberto Lavecchia; Antonio Zuorro. 2021. "Microorganisms: A Potential Source of Bioactive molecules for Antioxidants and Antimicrobial Applications." , no. : 1.

Journal article
Published: 29 October 2020 in Journal of Water Process Engineering
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Extensive and improper utilization of water from industrial, municipal, and agricultural activities generate 380 trillion L/y of wastewater worldwide. Wastewaters from different sources contain enormous amounts of nutrients such as carbon, nitrogen, and phosphorus. Thus, the recovery of these nutrients via appropriate sustainable process becomes a necessity. Among various processes microalgae-based technologies has attracted considerable attention and its strategies for sustainable and low-cost treatment of wastewater has allowed removal of over 70% nutrient loads from the wastewater. After the treatment of wastewater, the harvested microalgae biomass contains value-added biomolecules which can used for bioenergy production and nanoparticle synthesis. At present, high operational costs represent a major limitation for the development of microalgae-based biorefineries. Thus, the main aim of the review is to provide the knowledge about the potential of low-cost microalgae-based integrated biorefinery for wastewater treatments and resource recovery. Also, this review provides the insight of microalgae biomass-based bioenergy products, nanoparticles synthesis their application within the concept of circular bioeconomy. Furthermore, this review also provides information on different established industries which used microalgae for wastewater treatment.

ACS Style

Rahul Kumar Goswami; Sanjeet Mehariya; Pradeep Verma; Roberto Lavecchia; Antonio Zuorro. Microalgae-based biorefineries for sustainable resource recovery from wastewater. Journal of Water Process Engineering 2020, 40, 101747 .

AMA Style

Rahul Kumar Goswami, Sanjeet Mehariya, Pradeep Verma, Roberto Lavecchia, Antonio Zuorro. Microalgae-based biorefineries for sustainable resource recovery from wastewater. Journal of Water Process Engineering. 2020; 40 ():101747.

Chicago/Turabian Style

Rahul Kumar Goswami; Sanjeet Mehariya; Pradeep Verma; Roberto Lavecchia; Antonio Zuorro. 2020. "Microalgae-based biorefineries for sustainable resource recovery from wastewater." Journal of Water Process Engineering 40, no. : 101747.

Review
Published: 22 October 2020 in Bioresource Technology
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The reliance of fossil fuel for industrial and energy sectors has resulted in its depletion. Therefore, enormous efforts have been considered to move-out from fossil fuels to renewable energy sources based industrial process developments. Recently, biohydrogen (bio-H2) has been recognised as a clean source of fuel with high-energy efficiency, which can be produced via different routes. Among them, biological fermentation processes are highly recommended due to eco-friendly and economically viable approaches compared to that of thermochemical processes. However, the low H2 yield and high production cost are major bottlenecks for commercial scale operations. Thus, this review proposed an integrated microalgae-based H2 production process, which will provides a possible route for commercialization in near future. Furthermore, process integration to improve efficiency and implementation of advanced strategies for the enhancement of bio-H2 production, economic viability, and future research needs are discussed.

ACS Style

Rahul Kumar Goswami; Sanjeet Mehariya; Parthiba Karthikeyan Obulisamy; Pradeep Verma. Advanced microalgae-based renewable biohydrogen production systems: A review. Bioresource Technology 2020, 320, 124301 .

AMA Style

Rahul Kumar Goswami, Sanjeet Mehariya, Parthiba Karthikeyan Obulisamy, Pradeep Verma. Advanced microalgae-based renewable biohydrogen production systems: A review. Bioresource Technology. 2020; 320 ():124301.

Chicago/Turabian Style

Rahul Kumar Goswami; Sanjeet Mehariya; Parthiba Karthikeyan Obulisamy; Pradeep Verma. 2020. "Advanced microalgae-based renewable biohydrogen production systems: A review." Bioresource Technology 320, no. : 124301.

Research paper
Published: 21 September 2020 in Bioprocess and Biosystems Engineering
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This study aimed to characterize the biofilm microbial community that causes corrosion of API 5LX carbon steel. API 5LX carbon steel coupons were incubated with raw produced water collected from two oil reservoir stations or filter-sterilized produced water. Biofilm 16S rRNA amplicon sequencing revealed that the bacterial community present in the biofilm was dominated by Proteobacteria, including Marinobacter hydrocarbonoclaustics and Marinobacter alkaliphilus. Electrochemical analysis such as impedance and polarization results indicated that Proteobacteria biofilm accelerated corrosion by ~ twofold (2.1 ± 0.61 mm/years) or ~ fourfold (~ 3.7 ± 0.42 mm/years) when compared to the control treatment (0.95 ± 0.1 mm/years). Scanning electron and atomic force microscopy revealed the presence of a thick biofilm and pitting corrosion. X-ray diffraction revealed higher amounts of the corrosion products Fe2O3, γ-FeOOH, and α-FeOOH, and confirmed that the microbial biofilm strongly oxidized the iron and contributed to the acceleration of corrosion of carbon metal API 5LX.

ACS Style

Punniyakotti Elumalai; Mohamad S. AlSalhi; Sanjeet Mehariya; Obulisamy Parthiba Karthikeyan; Sandhanasamy Devanesan; Punniyakotti Parthipan; Aruliah Rajasekar. Bacterial community analysis of biofilm on API 5LX carbon steel in an oil reservoir environment. Bioprocess and Biosystems Engineering 2020, 44, 355 -368.

AMA Style

Punniyakotti Elumalai, Mohamad S. AlSalhi, Sanjeet Mehariya, Obulisamy Parthiba Karthikeyan, Sandhanasamy Devanesan, Punniyakotti Parthipan, Aruliah Rajasekar. Bacterial community analysis of biofilm on API 5LX carbon steel in an oil reservoir environment. Bioprocess and Biosystems Engineering. 2020; 44 (2):355-368.

Chicago/Turabian Style

Punniyakotti Elumalai; Mohamad S. AlSalhi; Sanjeet Mehariya; Obulisamy Parthiba Karthikeyan; Sandhanasamy Devanesan; Punniyakotti Parthipan; Aruliah Rajasekar. 2020. "Bacterial community analysis of biofilm on API 5LX carbon steel in an oil reservoir environment." Bioprocess and Biosystems Engineering 44, no. 2: 355-368.

Books book
Published: 09 September 2020 in Chemo-Biological Systems for CO2 Utilization
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Chemo-Biological Systems for CO2 Utilization describes the most recent advanced tools and techniques for carbon dioxide capture and its utilization. It discusses and compares the advantages of different systems and aids researchers and industrialists in understanding energy generation in the form of biofuels, bioelectricity, or biogas using chemicals; nanomaterials; and microbial, enzymatic, and chemo-enzymatic-integrated systems. It describes the importance and utilization of CO2 in living systems, and provides an overview of the various fundamental methods, policies, and techniques involved in CO2 conversion. Emphasis is placed on the production of value-added products using CO2, including biomethanol, industrial carbonates, and liquid or gaseous fuels. Features: Explains the correlations between microbial, biological, and chemical products and their roles in the conversion of CO2 into usable energy and related products. Being suitable for a broad audience, it addresses fundamental treatment methods for reusing environmental waste materials. Aids in decision-making and policy planning for environmental professionals. The information provided throughout this book will help researchers and professionals working in various industries to better understand the conversion of CO2 into energy-based products. Chemo-Biological Systems for CO2 Utilization also serves as a useful guide to seek alternative methods for clean energy and mitigating global climate change.

ACS Style

Sanjeet Mehariya. Chemo-Biological Systems for CO2 Utilization. Chemo-Biological Systems for CO2 Utilization 2020, 1 .

AMA Style

Sanjeet Mehariya. Chemo-Biological Systems for CO2 Utilization. Chemo-Biological Systems for CO2 Utilization. 2020; ():1.

Chicago/Turabian Style

Sanjeet Mehariya. 2020. "Chemo-Biological Systems for CO2 Utilization." Chemo-Biological Systems for CO2 Utilization , no. : 1.

Journal article
Published: 03 September 2020 in Antioxidants
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The aim of this study was to develop an effective integrated cultivation system for Haematococcus pluvialis as a source of bioactive compounds such as astaxanthin, lutein, proteins, and fatty acids (FAs). The Chlorophyta H. pluvialis was cultivated in a vertical bubble column photobioreactor (VBC-PBR) under batch mode, allowing switching from green to red phase for astaxanthin induction. The combined effect of light intensity and nutrients on bioactive compound formation was investigated. Results showed that growth under lower nutrients availability and light intensity led to a higher concentration of biomass. Growth under high light intensity with an appropriate concentration of nitrate, sulfate, phosphate and magnesium led to ~85% and ~58% higher production of total carotenoids and fatty acids, respectively. Under high stress conditions, ~90% nitrate and phosphate consumption were observed.

ACS Style

Sanjeet Mehariya; Neeta Sharma; Angela Iovine; Patrizia Casella; Tiziana Marino; Vincenzo LaRocca; Antonio Molino; Dino Musmarra. An Integrated Strategy for Nutraceuticals from Haematoccus pluvialis: From Cultivation to Extraction. Antioxidants 2020, 9, 825 .

AMA Style

Sanjeet Mehariya, Neeta Sharma, Angela Iovine, Patrizia Casella, Tiziana Marino, Vincenzo LaRocca, Antonio Molino, Dino Musmarra. An Integrated Strategy for Nutraceuticals from Haematoccus pluvialis: From Cultivation to Extraction. Antioxidants. 2020; 9 (9):825.

Chicago/Turabian Style

Sanjeet Mehariya; Neeta Sharma; Angela Iovine; Patrizia Casella; Tiziana Marino; Vincenzo LaRocca; Antonio Molino; Dino Musmarra. 2020. "An Integrated Strategy for Nutraceuticals from Haematoccus pluvialis: From Cultivation to Extraction." Antioxidants 9, no. 9: 825.

Review article
Published: 10 August 2020 in Science of The Total Environment
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Treatment of industrial and domestic wastewater is very important to protect downstream users from health risks and meet the freshwater demand of the ever-increasing world population. Different types of wastewater (textile, dairy, pharmaceutical, swine, municipal, etc.) vary in composition and require different treatment strategies. Wastewater management and treatment is an expensive process; hence, it is important to integrate relevant technology into this process to make it more feasible and cost-effective. Wastewater treatment using microalgae-based technology could be a global solution for resource recovery from wastewater and to provide affordable feedstock for bioenergy (biodiesel, biohydrogen, bio-alcohol, methane, and bioelectricity) production. Various microalgal cultivation systems (open or closed photobioreactors), turf scrubber, and hybrid systems have been developed. Although many algal biomass harvesting methods (physical, chemical, biological, and electromagnetic) have been reported, it is still an expensive process. In this review article, resource recovery from wastewater using algal cultivation, biomass harvesting, and various technologies applied in converting algal biomass into bioenergy, along with the various challenges that are encountered are discussed in brief.

ACS Style

Shashi Kant Bhatia; Sanjeet Mehariya; Ravi Kant Bhatia; Manu Kumar; Arivalagan Pugazhendhi; Mukesh Kumar Awasthi; A.E. Atabani; Gopalakrishnan Kumar; Wooseong Kim; Seung-Oh Seo; Yung-Hun Yang. Wastewater based microalgal biorefinery for bioenergy production: Progress and challenges. Science of The Total Environment 2020, 751, 141599 .

AMA Style

Shashi Kant Bhatia, Sanjeet Mehariya, Ravi Kant Bhatia, Manu Kumar, Arivalagan Pugazhendhi, Mukesh Kumar Awasthi, A.E. Atabani, Gopalakrishnan Kumar, Wooseong Kim, Seung-Oh Seo, Yung-Hun Yang. Wastewater based microalgal biorefinery for bioenergy production: Progress and challenges. Science of The Total Environment. 2020; 751 ():141599.

Chicago/Turabian Style

Shashi Kant Bhatia; Sanjeet Mehariya; Ravi Kant Bhatia; Manu Kumar; Arivalagan Pugazhendhi; Mukesh Kumar Awasthi; A.E. Atabani; Gopalakrishnan Kumar; Wooseong Kim; Seung-Oh Seo; Yung-Hun Yang. 2020. "Wastewater based microalgal biorefinery for bioenergy production: Progress and challenges." Science of The Total Environment 751, no. : 141599.

Journal article
Published: 13 May 2020 in Antioxidants
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Haematococcus pluvialis microalgae is a promising source of astaxanthin, an excellent antioxidant carotenoid. H. pluvialis, as well as other species, could find more extensive applications as healthy food for a variegated carotenoids composition in addition to astaxanthin. Official method has not currently been used for this purpose. The objective of this work was to propose a method to characterize carotenoids in H. pluvialis after the comparison between spectrophotometric and liquid chromatography analysis. In addition, in order to improve the use of astaxanthin in the food industry, thermal stability was investigated. In this context, the effect of temperature at 40–80 °C, over a 16 h storage period was tested on astaxanthin produced by H. pluvialis. A further test was carried out at room temperature (20 °C) for seven days. A decrease in the astaxanthin concentration was observed at all tested temperatures with a decrease >50% of all-trans isomer at 80 °C after 16 h and an increase of 9-cis and 13-cis isomers. In conclusion, the obtained results showed the importance of evaluating the degradation effect of temperature on astaxanthin used as a food additive for a future greater enhancement of this bioproduct in the food field.

ACS Style

Patrizia Casella; Angela Iovine; Sanjeet Mehariya; Tiziana Marino; Dino Musmarra; Antonio Molino. Smart Method for Carotenoids Characterization in Haematococcus pluvialis Red Phase and Evaluation of Astaxanthin Thermal Stability. Antioxidants 2020, 9, 422 .

AMA Style

Patrizia Casella, Angela Iovine, Sanjeet Mehariya, Tiziana Marino, Dino Musmarra, Antonio Molino. Smart Method for Carotenoids Characterization in Haematococcus pluvialis Red Phase and Evaluation of Astaxanthin Thermal Stability. Antioxidants. 2020; 9 (5):422.

Chicago/Turabian Style

Patrizia Casella; Angela Iovine; Sanjeet Mehariya; Tiziana Marino; Dino Musmarra; Antonio Molino. 2020. "Smart Method for Carotenoids Characterization in Haematococcus pluvialis Red Phase and Evaluation of Astaxanthin Thermal Stability." Antioxidants 9, no. 5: 422.

Original research article
Published: 21 April 2020 in Frontiers in Plant Science
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The main purpose of this study is to investigate the effects of operative parameters and bioprocess strategies on the photo-autotrophic cultivation of the microalgae Scenedesmus almeriensis for lutein production. S. almeriensis was cultivated in a vertical bubble column photobioreactor (VBC-PBR) in batch mode and the bioactive compounds were extracted by accelerated solvent extraction with ethanol at 67°C and 10 MPa. The cultivation with a volume fraction of CO2 in the range 0–3.0%v/v showed that the highest biomass and lutein concentrations – 3.7 g/L and 5.71 mg/g, respectively – were measured at the highest CO2 concentration and using fresh growth medium. Recycling the cultivation medium from harvested microalgae resulted in decreased biomass and lutein content. The nutrient chemical composition analysis showed the highest consumption rates for nitrogen and phosphorus, with values higher than 80%, while sulfate and chloride were less consumed.

ACS Style

Antonio Molino; Sanjeet Mehariya; Angela Iovine; Patrizia Casella; Tiziana Marino; Despina Karatza; Simeone Chianese; Dino Musmarra. Enhancing Biomass and Lutein Production From Scenedesmus almeriensis: Effect of Carbon Dioxide Concentration and Culture Medium Reuse. Frontiers in Plant Science 2020, 11, 415 .

AMA Style

Antonio Molino, Sanjeet Mehariya, Angela Iovine, Patrizia Casella, Tiziana Marino, Despina Karatza, Simeone Chianese, Dino Musmarra. Enhancing Biomass and Lutein Production From Scenedesmus almeriensis: Effect of Carbon Dioxide Concentration and Culture Medium Reuse. Frontiers in Plant Science. 2020; 11 ():415.

Chicago/Turabian Style

Antonio Molino; Sanjeet Mehariya; Angela Iovine; Patrizia Casella; Tiziana Marino; Despina Karatza; Simeone Chianese; Dino Musmarra. 2020. "Enhancing Biomass and Lutein Production From Scenedesmus almeriensis: Effect of Carbon Dioxide Concentration and Culture Medium Reuse." Frontiers in Plant Science 11, no. : 415.

Journal article
Published: 01 February 2020 in Journal of CO2 Utilization
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Sanjeet Mehariya; Giuseppe Di Sanzo; Vincenzo LaRocca; Maria Martino; Gian Paolo Leone; Tiziana Marino; Simeone Chianese; Roberto Balducchi; Dino Musmarra. Recent developments in supercritical fluid extraction of bioactive compounds from microalgae: Role of key parameters, technological achievements and challenges. Journal of CO2 Utilization 2020, 36, 196 -209.

AMA Style

Sanjeet Mehariya, Giuseppe Di Sanzo, Vincenzo LaRocca, Maria Martino, Gian Paolo Leone, Tiziana Marino, Simeone Chianese, Roberto Balducchi, Dino Musmarra. Recent developments in supercritical fluid extraction of bioactive compounds from microalgae: Role of key parameters, technological achievements and challenges. Journal of CO2 Utilization. 2020; 36 ():196-209.

Chicago/Turabian Style

Sanjeet Mehariya; Giuseppe Di Sanzo; Vincenzo LaRocca; Maria Martino; Gian Paolo Leone; Tiziana Marino; Simeone Chianese; Roberto Balducchi; Dino Musmarra. 2020. "Recent developments in supercritical fluid extraction of bioactive compounds from microalgae: Role of key parameters, technological achievements and challenges." Journal of CO2 Utilization 36, no. : 196-209.

Chapter
Published: 01 January 2020 in Bioenergy Research: Revisiting Latest Development
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Microbial fermentations are well recognized process for large-scale bioconversion of organic waste biomass into high-value organic acids. It requires processes optimization, i.e., that should reach at maximum productivity and no feedback inhibition, to reduce the cost of up- and down-stream processing for commercialization. To achieve this, triggered metabolic activities are often needed that maximize the conversion of organic carbon into organic acids under non-sterile conditions. By regulating the redox balance in-situ, the specific organic acid production could be tailored in fermentation systems under mixed/mono-culture conditions. In recent years, bio-electro-fermentations (BEF) has developed as a promising approach for organic waste conversion into value products due to its sustainable nature but yet required better understand for further development. In BEF, the fermentative metabolic pathways are enhanced with poising electrodes that facilitate effective electron transfers towards end-product recovery. It is expected to maintain the required redox conditions and buffer the system by regulating reducing equivalents e.g. NADH+ during fermentation. Moreover, microorganisms extract energy required to build biomass (anabolic process) from redox reactions (catabolism) through syntrophic interactions in BEF, while feedback inhibition of process could be overcome. In this chapter, we will elaborate the BEF process for organic acid production (mainly succinic, acetic, and muconic acids) and techno-economics of the process for commercialization.

ACS Style

C. Nagendranatha Reddy; Sanjeet Mehariya; S. Kavitha; R. Yukesh Kannah; K. Jayaprakash; Rajasri Yadavalli; J. Rajesh Banu; Parthiba Karthikeyan Obulisamy. Electro-Fermentation of Biomass for High-Value Organic Acids. Bioenergy Research: Revisiting Latest Development 2020, 417 -436.

AMA Style

C. Nagendranatha Reddy, Sanjeet Mehariya, S. Kavitha, R. Yukesh Kannah, K. Jayaprakash, Rajasri Yadavalli, J. Rajesh Banu, Parthiba Karthikeyan Obulisamy. Electro-Fermentation of Biomass for High-Value Organic Acids. Bioenergy Research: Revisiting Latest Development. 2020; ():417-436.

Chicago/Turabian Style

C. Nagendranatha Reddy; Sanjeet Mehariya; S. Kavitha; R. Yukesh Kannah; K. Jayaprakash; Rajasri Yadavalli; J. Rajesh Banu; Parthiba Karthikeyan Obulisamy. 2020. "Electro-Fermentation of Biomass for High-Value Organic Acids." Bioenergy Research: Revisiting Latest Development , no. : 417-436.

Book chapter
Published: 01 January 2020 in Current Trends and Future Developments on (Bio-) Membranes
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Sanjeet Mehariya; Angela Iovine; Patrizia Casella; Dino Musmarra; Simeone Chianese; Tiziana Marino; Alberto Figoli; Neeta Sharma; Antonio Molino. Bio-based and agriculture resources for production of bioproducts. Current Trends and Future Developments on (Bio-) Membranes 2020, 263 -282.

AMA Style

Sanjeet Mehariya, Angela Iovine, Patrizia Casella, Dino Musmarra, Simeone Chianese, Tiziana Marino, Alberto Figoli, Neeta Sharma, Antonio Molino. Bio-based and agriculture resources for production of bioproducts. Current Trends and Future Developments on (Bio-) Membranes. 2020; ():263-282.

Chicago/Turabian Style

Sanjeet Mehariya; Angela Iovine; Patrizia Casella; Dino Musmarra; Simeone Chianese; Tiziana Marino; Alberto Figoli; Neeta Sharma; Antonio Molino. 2020. "Bio-based and agriculture resources for production of bioproducts." Current Trends and Future Developments on (Bio-) Membranes , no. : 263-282.

Chapter
Published: 01 January 2020 in Bioenergy Research: Revisiting Latest Development
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Agro-industrial waste (AW) could be attractive carbon (C) source that have potential for production of high value-added biopolymers. AW can be derived from different sectors based on the compositional variation and transformed into biopolymers. Biopolymers are synthesized from diverse group of microbes and can be categorized into different groups. These biopolymers are a storing compound that is available in the cytoplasm of different group of microorganisms. This chapter describes the potential of AW for production of biopolymers, which allows the conversion of organic AW into biodegradable polymer production using the ecobiotechnological approach to reduce the overall cost. This will allow the development of the low-cost biopolymers, which can have different applications in various sectors. Therefore, it will increase demand of sustainable products with the rising its market demand.

ACS Style

Sanjeet Mehariya; Tiziana Marino; Patrizia Casella; Angela Iovine; Gian Paolo Leone; Dino Musmarra; Antonio Molino. Biorefinery for Agro-Industrial Waste Into Value-Added Biopolymers: Production and Applications. Bioenergy Research: Revisiting Latest Development 2020, 1 -19.

AMA Style

Sanjeet Mehariya, Tiziana Marino, Patrizia Casella, Angela Iovine, Gian Paolo Leone, Dino Musmarra, Antonio Molino. Biorefinery for Agro-Industrial Waste Into Value-Added Biopolymers: Production and Applications. Bioenergy Research: Revisiting Latest Development. 2020; ():1-19.

Chicago/Turabian Style

Sanjeet Mehariya; Tiziana Marino; Patrizia Casella; Angela Iovine; Gian Paolo Leone; Dino Musmarra; Antonio Molino. 2020. "Biorefinery for Agro-Industrial Waste Into Value-Added Biopolymers: Production and Applications." Bioenergy Research: Revisiting Latest Development , no. : 1-19.