scispace - formally typeset
Search or ask a question
Author

Manoj Kumar Enamala

Bio: Manoj Kumar Enamala is an academic researcher from Acharya Nagarjuna University. The author has contributed to research in topics: Microbial fuel cell & Biofuel. The author has an hindex of 2, co-authored 14 publications receiving 183 citations.

Papers
More filters
Journal ArticleDOI
TL;DR: A comprehensive review on various methods of both biomass harvesting and lipid extraction from microalgae available, so far, besides to discuss their advantages and disadvantages is provided in this paper, which also deals with various conditions that are favorable for lipid accumulation as well as the yield from different species.
Abstract: The concern regarding alternate sources of energy is mounting day-by-day due to the effect of pollution that is damaging the environment. Algae are a diverse group of aquatic organisms have an efficiency and ability in mitigating carbon dioxide emissions and produce oil with a high productivity which has a lot of potential applications in producing biofuel, otherwise known as the third-generation biofuel. These third generation biofuels are the best alternative to the present situation since they have the perspective to eliminate most of the ecological problems created by the use of conventional fossil fuels. These organisms are responsible for closely 50% of the photosynthesis process taking place on the planet and are distributed predominantly in many of the aquatic systems. The huge interest in utilizing these organisms as a potential source of energy lies in converting the primary as well as secondary metabolites into useful products. Algae are considered to be the most prominent resource for the upcoming generations as the most suitable and sustainable feedstock. The key process limitations in microalgal biofuel production are inexpensive and effective harvesting of biomass and extraction of lipids. The major objective of this article is to provide a comprehensive review on various methods of both biomass harvesting and lipid extraction from microalgae available, so far, besides to discuss their advantages and disadvantages. This article also deals with various conditions that are favourable for lipid accumulation as well as the yield from different species.

222 citations

Journal ArticleDOI
TL;DR: A review of the recent advancements in functional food technology based on vegetal proteins, a comparative account of traditional and commercially available meat alternates is presented in this article, where different combinations of plant and animal proteins are discussed to enhance the nutritional aspect, organoleptic profile and shelf-life of available food products.
Abstract: The global community is in a quest for nutritional and environment-friendly resources as a part of their food habit. The ubiquitous trend of veganism tied with the increasing apprehensions towards animal welfare, negative impact on human health and the environment has escalated the demand for meat alternatives mainly plant-based meat analogues (PBMA). Protein-rich bioresources such as cereals, vegetables, and algae have been explored to mimic animal meat in a similar flavour, texture, sensory and aromatic properties. This review aims to summarize the recent advancements in functional food technology based on vegetal proteins, a comparative account of traditional and commercially available meat alternates. The literature search for the last 10 years shows the rise in research on plant ingredients to develop novel human foods. A brief account of various production methods and their processing effects to improve the structural and techno-functionality of PBMA is suggested for designing sustainable food. The different combinations of plant and animal proteins are discussed to enhance the nutritional aspect, organoleptic profile and shelf-life of available food products. The positive feedback resulted in booming food industries across the world, incorporating vegetal proteins. The global market trend introducing well-established and promising food brands is listed to discuss the prospects of PBMA.

53 citations

Journal ArticleDOI
TL;DR: In this paper, the potential application of algal biomass in the field of bioelectricity is described, and the potential use of algae as a biocatalyst in Microbial Fuel Cells (MFCs) is discussed.
Abstract: Since the last century, the search for clean and renewable energy is going on. This process will continue until there is a stable solution available as an alternative to fossil fuels. Several energy-producing products arise from photosynthetic-organisms like biofuel, bioelectricity, and there are various methods also available for the extraction of these products. Microbial fuel cells (MFCs) are energy transducers which convert organic matter directly into electricity, through the process of anaerobic respiration of microorganisms. Now a day’s researchers have taken as a challenge to use algae along with the bacterial communities to provide an organic carbon fuel source for the MFCs. This paper describes the potential application of algal biomass in the field of bioelectricity. Till now, many scientific experiments conducted all around the world to demonstrate how well efficient is this green photosynthetic organism capable of producing electricity along with its other applications like biofuel, demand in the food industry, and much more. The present manuscript aimed to provide an overview of the potential use of algae as a biocatalyst in MFCs. Further, this article also provides the current status of numerous countries which are excelled in the field of bioelectricity generation.

46 citations

Book ChapterDOI
10 Oct 2019
TL;DR: The basic principle of nanobioremediation is defined as degradation of organic wastes using nanocatalysts as a medium, which allows them to penetrate deep inside the contaminants and treat them safely without affecting the surroundings, with the help of several microorganisms as discussed by the authors.
Abstract: This chapter discusses all the possible applications of nanoremediation with various biological sources being used in field of technology. Nanobioremediation technologies which are used include chemical and physical remediation, incineration, and bioremediation. Nanobioremediation is a technique which helps in transforming the harmful pollutants into safer molecules using various microbes in combination with nanoparticles of less than 100 nm. The basic principle of nanobioremediation is defined as degradation of organic wastes using nanocatalysts as a medium, which allows them to penetrate deep inside the contaminants and treat them safely without affecting the surroundings, with the help of several microorganisms. When nanoscience and nanoengineering are combined together, the end result is better opportunities for the applications being used currently in nanobioremediation. There must be some effective oil remediation technologies for the cleanup process. Nanomaterials are being used in various applications like manufacturing building materials, treating various environmental pollutants, and even providing foods for microorganisms to feed on.

5 citations

Journal ArticleDOI
TL;DR: In this paper, a detailed discussion on different technologies for extracting valuable biomolecules with an emphasis on lipid extraction has been carried out, and the diatom-based photosynthetic biorefinery approach for better understanding of the renewable usage of biomass is done.
Abstract: Diatoms are the reservoir of bioactive compounds which have immense application in nutrition, industrial commodities and ecological studies. In the oceans, diatoms form a large bloom of silica under favourable conditions, whereas, in lentic and lotic systems, they colonize according to seasonal disturbances. Notably, the survival of diatoms in a stressed environment is because of their uniqueness; therefore, diatoms serve as an ideal candidate to understand the evolutionary paradigm and successional dynamics. This review outlines the biological uniqueness of diatoms, their role in biogeochemical cycles and the recolonization pattern of diatoms in anthropic disturbed habitats. Furthermore, a detailed discussion on different technologies for extracting valuable biomolecules with an emphasis on lipid extraction has been carried out. Moreover, the diatom-based photosynthetic biorefinery approach for a better understanding of the renewable usage of biomass is done.

4 citations


Cited by
More filters
Journal ArticleDOI
TL;DR: The recent advances in microalgae cultivation and growth processes are reviewed and flocculation mechanisms are analyzed, while the characteristics that the ideal harvesting methods should have are summarized.

293 citations

Journal ArticleDOI
TL;DR: The variety of processes and pathways through which bio-valorization of algal biomass can be performed are described in this review and the biorefinery model and its collaborative approach with various processes are highlighted for the production of eco-friendly, sustainable, and cost-effective biofuels and value-added products.

273 citations

Journal ArticleDOI
TL;DR: Detailed discussion on reactor configurations and design betterment was presented in this review, along with precise technical comparison on cost and energy requirements for the cultivation systems, to serve as guideline for long term adoption of these well-established cultivation technologies in biofuel plants.
Abstract: Derivation of biofuel from microalgae biomass has been widely researched in the past few decades. Microalgae is capable of producing 58,700 litres oil per hectare that can generate 121,104 litres biodiesel per hectare, which seemingly a promising transition over conventional fossil fuels. Nevertheless, economic sustainability of commercial scale production of microalgae biomass is still in shadows of doubt, especially the cultivation and harvesting process. Apparently, the microalgae cultivation system has evolved from traditional open pond to various modern photobioreactor (PBR) designs. However, with regards to tubular and flat panel PBRs as the most ubiquitous systems for biofuel production at commercial level, extensive discussion on reactor configurations and design betterment was presented in this review, along with precise technical comparison on cost and energy requirements for the cultivation systems. This review intended to serve as guideline for long term adoption of these well-established cultivation technologies in biofuel plants given the numerous economic benefits. Besides that, in attempt to lower the harvesting cost, potential use of various waste biomass as bioflocculants to recover microalgae biomass was introduced in this review. This article also deliberates direction on potential policy interventions to produce microalgae biofuel in a more sustainable and cost-effective manners in near future.

191 citations

Journal ArticleDOI
TL;DR: The most recent work on microalgal-bacterial interaction mechanisms is recapitulates, and the diverse biotechnological applications of microalGal-b bacterial consortia are described, which include wastewater treatment, biomass harvesting, and electricity generation.
Abstract: Microalgae have emerged as a renewable and sustainable candidate for bioenergy production coupled with pollutant removal from wastewater. However, costly biomass harvesting, insufficient biomass productivity, and energy-intensive extraction methods are major bottlenecks restricting their large-scale development. To break through such limitations, researchers have focused on the technologies towards consolidating microalgal-bacterial consortia, which exhibit numerous advantages related to economy, energy, and environment, due to the cooperative interactions between microalgae and bacteria. This paper recapitulates the most recent work on microalgal-bacterial interaction mechanisms, and describes the diverse biotechnological applications of microalgal-bacterial consortia. Based on this review, the interaction mechanisms cover substrate exchange, cell-to-cell signaling, and horizontal gene transfer. Nutrient availability, growth phase, and cultivation conditions are major factors affecting their interactions. In terms of wastewater treatment, attached microalgal-bacterial consortia are economically feasible and technically superior compared to suspended microalgal-bacterial consortia. Appropriate carrier, bioreactor type, operation mode, operational factor, and further perspectives for engineering attached microalgal-bacterial consortia are critically assessed. Bacteria play an important role in promoting microalgal growth, enhancing bio-flocculation and facilitating cell wall disruption, and thus expanding the application potential of microalgal biofuel production. The current state of other promising biotechnological applications of microalgal-bacterial consortia (particularly mitigation of CO2 emissions, microalgal bloom control, and electricity generation) and the appropriate strategies to enhance their practical applications are discussed. The major challenges to scale up microalgal-bacterial consortia and corresponding recommendations for further research are also addressed.

168 citations

Journal ArticleDOI
TL;DR: In this paper, a review of the most broadly utilized CO2 reduction strategies, including carbon capture and storage (CCS), carbon capture, utilization, and storage(CCUS), and Carbon Capture and Utilization (CCU) are reviewed.

137 citations