Papers by Shachi Shah - 4053
ACS applied materials & interfaces, Jan 27, 2018
The design of heterojunction with superior performance of light absorption and appropriate conduc... more The design of heterojunction with superior performance of light absorption and appropriate conduction band and valence band potentials is a promising approach for the applications in efficient environmental remediation and the solar energy storage. In recent years, many studies have been devoted to the applications of graphitic carbon nitride (g-CN)-based heterojunction photoactive nanomaterials under visible light irradiation due to its excellent physical, optical, and electrical properties, which inspired us to compile this review. Although many reviews demonstrated about the syntheses and applications of g-CN composites, a targeted review on the systematic application and photocatalytic mechanisms of g-CN-based heterojunction, in which components are in intimate linkage with each other rather than a physical mixture, is still absent. In this review, the applications of g-CN-based heterojunction photoactive nanomaterials in environmental remediation and solar energy storage, such ...
The Open Biotechnology Journal, 2021
Increasing demand for renewable energy in the backdrop of global change calls for waste valorizat... more Increasing demand for renewable energy in the backdrop of global change calls for waste valorization and circular economy strategies. Public health concerns and demand for clean energy provide impetus to the development of wastewater based MFC. Wastewater treatment and simultaneous generation of bioelectricity offer a myriad of environmental benefits. Nevertheless, it is pertinent to know the challenges with the microbial fuel cell (MFC) technology to upscale the wastewater based MFC. This paper attempts to critically analyse the processes, application, challenges and opportunities of wastewater based MFCs. A literature survey was conducted to find out the advances in the field of wastewater based MFCs and the focus was to decipher the challenges to the implementation of wastewater based MFCs. Recent developments in MFC technology have improved the power output and studies show that a diverse group of organic-rich wastewater can be treated with MFCs. The developments include improve...
Production of bacterial cellulose by Acetobacter xylinum GS11
Fruits and vegetables have the highest wastage rates of 45% of any food. One of the recent resear... more Fruits and vegetables have the highest wastage rates of 45% of any food. One of the recent research areas is food waste valorization as a potential alternative to the disposal of a wide range of organic waste using microorganisms as one of the strategies known as microbial valorization. Bacterial cellulose is best known microbial valorization product because of its low cost, environmentally friendly nature, renewability, nanoscale dimensions, biocompatibility and extremely high hydrophilicity. Therefore, present study focuses on the isolation, characterization and identification of cellulose producing bacteria from decaying apple waste. Cellulose producers were isolated from decaying apple waste. The bacterial isolates obtained were identified through the morphological biochemical, physiological and molecular identification. The bacterial isolates exhibited potential remediation options to biovalorize decaying fruit waste by producing value added products as well as in safe disposal of waste.
The ability ofjew rhizospheric microorganisms to con\'ert 111so/ub/e form of phosphorous to an ac... more The ability ofjew rhizospheric microorganisms to con\'ert 111so/ub/e form of phosphorous to an accessible for/I/ 1s an i111portant trait of p/a/11 growth pro111oto1y rlnzobacteria for increasing plant yield. Consequent to use of phosphate so/ubilizmg bactena as inoc11/a11ts there is increase of P uptake by p/w1t. In this context, the m//uences 011 plant grmFth promotion by three phosphate solubi/izing bacteria (PSBJ i.e. RJII'/, R.MV4 and RPBJ \!'ere evaluated through seed inoculation 011 plant growth. nodu/ation and seed yield in lentil. All the em/11ated isolates had signijlcant i11/luence on plant growth in terms of.field emergence, root length. plant height. 1111111ber of branch and nodule n11mber per plant along 1rith seed yield contribllling tmits 1.e. number of pod per plant, number of seed per pod and per plant. I 000-seed weight and ultimatelv seed yield ha• 1 over w1-inoculated control. Among these isolates, RPBJ exhibited greater 111/luence on most of the characters studied followed by RMV4 and RMV I. The better pe!fonnance of these three bacteria/ isolates ll'as allributed to its greater P so/11b1/ization activity and positive correlation with plant growth and seed yield of lentil. However. RPBJ appear to be good phosphate so/ubilizing bacteria to be developed in to a P solubilizing bio-inocu/ant.
Advances in Microbial Technology for Upscaling Sustainable Biofuel Production
Growing concerns about decreasing fossil fuel reserves along with the increasing concentration of... more Growing concerns about decreasing fossil fuel reserves along with the increasing concentration of atmospheric CO2 are forcing humanity toward the search for new renewable sources of energy. Climate change management and green energy sources are the needs of the hour. There is immense potential in the production of biofuels by certain microorganisms from green and renewable resources. This is a much sought-after strategy because it is advantageous from the point of view of climate change mitigation and widening the renewable energy resource base. Biomass has the potential to significantly displace fossil fuels in the production of petroleum products. Scientific developments in the domains of genetic engineering and metabolic pathway engineering in microorganisms, and innovations in the field of systems biology and the kindred domain of synthetic biology have enabled the production of advanced biofuels through the action of engineered microorganisms. The similarities in properties bet...
Nexus Between Crop Residue Burning, Bioeconomy and Sustainable Development Goals Over North-Western India
The crop residue burning in India particularly North-western India is responsible for air polluti... more The crop residue burning in India particularly North-western India is responsible for air pollution episodes and public health concerns; greenhouse gases emissions and radiation imbalance; and declining soil organic matter and soil productivity. The objectives of this paper are to estimate the crop residue burning and emissions from crop residue burning, to recommend interventions in crop residue management and to propose a crop residue management-bioeconomy model incorporating strategies to sustainably manage the crop residues through interventions that enable waste valorization, food and nutritional security, farmers’ livelihood and sustainable agricultural production system. A national inventory on crop residue burning including the pollutant species was prepared using the IPCC methodology. The crop types included for the estimation are cereals, pulses, oilseeds, sugarcane, cotton, jute and Mesta. The total amount of crop residues generated and burned for the year 2017–18 was est...
Carbon sequestration activities in the forest: strategies and challenges
Sustainable Bioeconomy: Pathways to Sustainable Development Goals
The concept of circularity has become key for the bioeconomy. The objective of this chapter is to... more The concept of circularity has become key for the bioeconomy. The objective of this chapter is to discuss the concept of the optimal level of circularity, how it can evolve over time and how it can be operationally used in decision-making about the bioeconomy. In the background of the current literature on circular bioeconomy, we first illustrate the concept of the optimal degree of circularity using a simple market equilibrium framework. Then we elaborate on how this can be connected to the reality of transition to a circular bioeconomy. From an economic point view, the identification of an optimal pathway towards a circular bioeconomy driven by cost of recycling and externalities is central to ensure economic efficiency. In practice, a series of information obstacles hinder the implementation (and even the quantification) of this pathway. Hence, articulated policy mixes are usually needed to promote transition towards a circular bioeconomy.
Screening plant growth promotory rhizobacteria for improving seed germination and seedling vigor of lentil (Lens culinaris Medik)
Life Cycle Assessment of Lignocellulosic Waste Biorefinery
Bio-valorization of Waste
Climate Smart Agriculture Technologies for Environmental Management: The Intersection of Sustainability, Resilience, Wellbeing and Development
Sustainable Green Technologies for Environmental Management
Agriculture sync with the existence of humanity. Converging demands from human population, food s... more Agriculture sync with the existence of humanity. Converging demands from human population, food security, climate change mitigation and adaptation, agricultural resources, biofuel and oil prices, food prices, have engendered a new transformative, resilient and smart agricultural approach entitled “Climate Smart Agriculture”. Rapid alteration by humans on agricultural landscape driven by aspirations to maximize production, productivity, and profit with scant regard to environmental concerns led to the degradation of agricultural lands, alteration in global carbon and nitrogen cycles, loss of soil fertility and biodiversity, pest and disease outbreaks. Under such circumstances, agriculture production system must be insured against impending danger of climate change; augmented with diversity of biological resources; enhanced with adaptive capacity and resilience; provided with site-specific sustainable management practices like integrated crop management, conservation agriculture, agriculture diversification and landscape management. Climate Smart Agriculture (CSA) is construed as a “comprehensive agricultural approach that aims at sustainable productivity enhancement, mitigation of and adaptation to climate change, and achieving global food security and other related sustainable development goals”. CSA incorporates the virtues of “climate-smart food system”, “climate-proof farms”, and “climate-smart soils”.
Environmental Education and Education for Sustainable Development Through Mobile Learning
Research Anthology on Preparing School Administrators to Lead Quality Education Programs
Growing planetary challenges demand environmental consciousness and energetic workforce. The envi... more Growing planetary challenges demand environmental consciousness and energetic workforce. The environmental education and education for sustainable development are essential for the knowledge workers so as to intellectually empower them with cognitive skills, analytical abilities and problem solving capabilities leading to the efficient development and implementation of sustainable development policies and programmes. Increasing Access through Mobile Learning for EE and ESD is the need of the hour, especially for developing countries where the use of mobile technology is increasing at a phenomenal rate. Mobile learning will augment the efficacy of participatory teaching and learning methods that motivate and empower learners to change their behaviour and take action for environment and sustainable development. M-Learning enables learners to merge their learning experiences in a shared collaborative environment. This paper shows how mobile learning can transform the delivery of EE and...
Microbial Fuel Cell: Sustainable Green Technology for Bioelectricity Generation and Wastewater Treatment
Sustainable Green Technologies for Environmental Management
Global Environmental Change and the rapid exhaustion of non-renewable energy sources like coal, a... more Global Environmental Change and the rapid exhaustion of non-renewable energy sources like coal, and petroleum products have kindled the necessity of humankind for the invention of viable and efficient sustainable green technologies for harvesting energy resources. Microbial Fuel Cell (MFC) technology offers an effective carbon neutral alternative for bioelectricity generation. This environmentally benign technology capitalizes the ability of electrogenic bacteria to produce electricity from chemical energy produced from the degradation of organic substrates including wastewater. Bioelectricity generation by electrogenic bacteria is influenced by factors like nature/type of substrate, concentration of substrate, hydrogen ion concentration, organic loading rate and internal resistance. Of late, studies in the field of substrates for MFCs demonstrate that a diverse group of organic sources can be used as a substrate for microbes and consequently, sustainable energy can be produced. MFC-based systems found applications in hydrogen production, environmental sensors, seawater desalination, bioremediation, and microbial electro-synthesis and energy recovery. In this chapter, an insight has been given to the principles, components, upscaling, and potential applications of MFC as green and clean technology for bioelectricity generation and waste reduction.
Biorefinery: Potential and Prospects for Utilisation of Biogenic Waste
Bio-valorization of Waste
Microbial Biofortification: A Green Technology Through Plant Growth Promoting Microorganisms
Sustainable Green Technologies for Environmental Management
The hidden hunger or malnutrition is considered to be the most dignified global challenge to huma... more The hidden hunger or malnutrition is considered to be the most dignified global challenge to human kind. Malnutrition afflicts approximately more than one billion of world’s population in both developed and developing countries. Malnutrition includes diet related chronic diseases as well as overt nutrient deficiencies which leads to morbidity, reduced physical and mental growth. However, strategies to enhance supplementation of mineral elements and food fortification have not always been successful. Plant growth promoting microorganisms are known to fortify micro- and macro-nutrient contents in staple food crops through various mechanisms such as siderophore production, zinc solubilization, nitrogen fixation, phosphate solubilization, etc. Inoculation of potential microorganisms along with mineral fertilizers can increase the uptake of mineral elements, yield and growth. Therefore, biofortification of staple food crops by the implications of plant growth promoting microorganisms has an ability to attain mineral elements, is advocated as novel strategy not only to increase concentration of micronutrient in edible food crops but also to improve yields on less fertile soils.
Circular Economy and Sustainability
Crop residues are sustainable feedstock for bioenergy production. The gross crop residue potentia... more Crop residues are sustainable feedstock for bioenergy production. The gross crop residue potential generated in India is 696.38 million tonnes/year. Cereal crops generate about 364.27 million tonnes/year of crop residues. Cereal crops (rice, wheat, sorghum, pearl millet, maize), sugarcane and horticultural crops (coconut, areca nut, banana) are found to have immense crop residue generation potential. Crop residues of 209.69 million tonnes/ year are available as surplus and can be explored for bioenergy generation. Cereals and sugarcane account for 75% of surplus crop residues. Spatial variations existing between states in terms of surplus crop residue generation are due to crop acreage and crop productivity. Uttar Pradesh generates 116.69 million tonnes/year of gross crop residues and 41.76 million tonnes/year of surplus crop residues. States like Punjab,
Impact of Okhla, Bhalswa and Ghazipur Municipal Waste Dumpsites (Landfill) on Groundwater Quality in Delhi
Current World Environment
Rapid urbanization, increasing prosperity, economic development coupled with changing lifestyle h... more Rapid urbanization, increasing prosperity, economic development coupled with changing lifestyle has produced a tremendous generation of waste in huge quantity. The dumping of this huge quantity of partially segregated waste has become a public health and environmental concern. According to an estimate, more than 9500 tons per day (TPD) of MSW (Municipal solid waste) is generated in Delhi and about 60% of waste is transported to these three-active landfills in order of maximum in Bhalswa followed by Ghazipur and Okhla landfill sites which are non-scientific landfill and less than 40% were transported to composting plant and waste to energy plant. These waste dump sites have finished their commissioned date and crossed the permissible height and come under matured landfill (old). Dumping of unsegregated waste in these landfills contribute long-term threat to groundwater as various parameter such as inorganic, organic and heavy metal liberate from leachate of unsegregated solid waste a...
Impact of Fertilizers and Pesticides on Soil Microflora in Agriculture
Sustainable Agriculture Reviews, 2016
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Papers by Shachi Shah - 4053