scholarly journals APPLICATIONS OF GREEN CHEMISTRY PRINCIPLES IN AGRICULTURE

2018 ◽  
Vol 4 (2) ◽  
pp. 10-12 ◽  
Author(s):  
SUNEETA BHANDARI
Keyword(s):  
Green Chemistry ◽  
Sustainable Agriculture ◽  
Renewable Resources ◽  
Social Values ◽  
Solvent System ◽  
Environmentally Benign ◽  
New Paradigm ◽  
Renewable Biomass ◽  
Biomass Resources ◽  
Insight Into

Green chemistry involves the design and development of products and processes that minimize or eliminate the use and generation of chemicals hazardous to the environment and human health. The principles of green chemistry involve the development of green catalysts and use of non-toxic reagents. Green chemistry emphasizes the use of reactions improved atom efficiency, use of solvent-free or environmentally benign recyclable solvent system and the use of renewable resources. Nowadays, green chemistry plays a new paradigm in the field of agriculture. Sustainable agriculture and green chemistry are both revolutionary fields and intertwined. In the last few years, for sustainable production in agriculture use of renewable biomass resources increases to generate bio-based food products with low inputs, zero waste, substantial social values and minimizing environmental impact. This article provides a good insight into green chemistry principles in sustainable agriculture.

Scalable synthesis of an environmentally benign graphene–sand based organic–inorganic hybrid for sulfide removal from aqueous solution: an insight into the mechanism

2019 ◽  
Vol 43 (8) ◽  
pp. 3500-3512 ◽  
Author(s):  
Anjali Achazhiyath Edathil ◽  
Jerina Hisham Zain ◽  
Mohammad Abu Haija ◽  
Fawzi Banat
Keyword(s):  
Aqueous Solution ◽  
Green Chemistry ◽  
Aqueous Solutions ◽  
Environmentally Benign ◽  
Inorganic Hybrid ◽  
Sulfide Removal ◽  
Desert Sand ◽  
Scalable Synthesis ◽  
Insight Into

In this study, a graphene–sand hybrid (GSH) was successfully synthesized from locally available desert sand and sugar using a green chemistry approach and used as an adsorbent for the removal of dissolved sulfides from aqueous solutions.

scholarly journals RECENT DEVELOPMENTS ON BIOMASS UTILIZATION FOR BIOENERGY PRODUCTION IN PAKISTAN

2020 ◽  
Vol 2 (2) ◽  
pp. 156-160
Author(s):  
Salman Raza Naqvi
Keyword(s):  
Renewable Resources ◽  
Load Shedding ◽  
Energy Resources ◽  
Environment Friendly ◽  
Bioenergy Production ◽  
Recent Developments ◽  
Biomass Resources ◽  
Promising Source ◽  
Insight Into ◽  
Lignocellulose Biomass

Pakistan is facing an undersupply of electricity, causing load shedding several hours per day due to the adherence to conventional energy resources having socioeconomic and environmental limitations. This study presents a critical analysis of the present energy sector of Pakistan and recent developments towards bioenergy production from renewable resources. This study also provides insight into the potential of lignocellulose biomass resources to generate electricity for the national grid on a larger scale. It concludes that biomass is the promising source of sustainable, available, implementable and environment-friendly resource of bioenergy production in Pakistan.

Nb2C MXene assisted CoNi bimetallic catalysts for hydrogenolysis of aromatic ethers

2021 ◽  
Author(s):  
Sen-Wang Wang ◽  
Zhen-Hong He ◽  
Jian-Gang Chen ◽  
Kuan Wang ◽  
Zhong-Yu Wang ◽  
...  
Keyword(s):  
Bimetallic Catalysts ◽  
Precious Metal ◽  
Renewable Biomass ◽  
Biomass Resources

Hydrogenolysis of biomass-derived lignin sources is highly important for the conversion of renewable biomass resources to biofuels. However, lots of developed catalysts suffer from the drawbacks of expensive precious metal...

scholarly journals Renewable Biomass Utilization: A Way Forward to Establish Sustainable Chemical and Processing Industries

2021 ◽  
Vol 3 (1) ◽  
pp. 243-259
Author(s):  
Yadhu N. Guragain ◽  
Praveen V. Vadlani
Keyword(s):  
Fossil Fuels ◽  
Process Intensification ◽  
Raw Material ◽  
Biomass Composition ◽  
Biomass Feedstocks ◽  
Renewable Biomass ◽  
Sustainability Criteria ◽  
Biomass Component ◽  
Biomass Resources ◽  
Multiple Challenges

Lignocellulosic biomass feedstocks are promising alternatives to fossil fuels for meeting raw material needs of processing industries and helping transit from a linear to a circular economy and thereby meet the global sustainability criteria. The sugar platform route in the biochemical conversion process is one of the promising and extensively studied methods, which consists of four major conversion steps: pretreatment, hydrolysis, fermentation, and product purification. Each of these conversion steps has multiple challenges. Among them, the challenges associated with the pretreatment are the most significant for the overall process because this is the most expensive step in the sugar platform route and it significantly affects the efficiency of all subsequent steps on the sustainable valorization of each biomass component. However, the development of a universal pretreatment method to cater to all types of feedstock is nearly impossible due to the substantial variations in compositions and structures of biopolymers among these feedstocks. In this review, we have discussed some promising pretreatment methods, their processing and chemicals requirements, and the effect of biomass composition on deconstruction efficiencies. In addition, the global biomass resources availability and process intensification ideas for the lignocellulosic-based chemical industry have been discussed from a circularity and sustainability standpoint.

scholarly journals Nonreciprocal charge transport up to room temperature in bulk Rashba semiconductor α-GeTe

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yan Li ◽  
Yang Li ◽  
Peng Li ◽  
Bin Fang ◽  
Xu Yang ◽  
...  
Keyword(s):  
Charge Transport ◽  
Room Temperature ◽  
Theoretical Calculations ◽  
Ferromagnetic Layer ◽  
Spin Splitting ◽  
New Paradigm ◽  
Rashba Spin ◽  
Rashba Spin Splitting ◽  
Fundamental Insight ◽  
Insight Into

AbstractNonmagnetic Rashba systems with broken inversion symmetry are expected to exhibit nonreciprocal charge transport, a new paradigm of unidirectional magnetoresistance in the absence of ferromagnetic layer. So far, most work on nonreciprocal transport has been solely limited to cryogenic temperatures, which is a major obstacle for exploiting the room-temperature two-terminal devices based on such a nonreciprocal response. Here, we report a nonreciprocal charge transport behavior up to room temperature in semiconductor α-GeTe with coexisting the surface and bulk Rashba states. The combination of the band structure measurements and theoretical calculations strongly suggest that the nonreciprocal response is ascribed to the giant bulk Rashba spin splitting rather than the surface Rashba states. Remarkably, we find that the magnitude of the nonreciprocal response shows an unexpected non-monotonical dependence on temperature. The extended theoretical model based on the second-order spin–orbit coupled magnetotransport enables us to establish the correlation between the nonlinear magnetoresistance and the spin textures in the Rashba system. Our findings offer significant fundamental insight into the physics underlying the nonreciprocity and may pave a route for future rectification devices.

La chimica verde

2012 ◽  
pp. 65-73
Author(s):  
Roberto Ballini
Keyword(s):  
Sustainable Development ◽  
Green Chemistry ◽  
Continuous Improvement ◽  
Global Economy ◽  
Standard Of Living ◽  
Industrialized Countries ◽  
New Paradigm ◽  
The Usa

The late 20th and early 21st centuries have seen a phenomenal growth of the global economy and a continuous improvement of the standard of living in industrialized countries. Sustainable development has consequently become an ideal goal and, in the early 1990s, the concept of Green Chemistry was launched in the USA as a new paradigm.

scholarly journals TRADITIONAL DWELLING OF M`ZAB VALLEY IN ALHERIA: THE POINT OF ADAPTATION TO THE ENVIREMENT

2021 ◽  
pp. 159-169
Author(s):  
Nourel Houda Rezig
Keyword(s):  
Renewable Resources ◽  
Social Values ◽  
Arid Environment ◽  
Arid Climate ◽  
Simple Design ◽  
Unesco World Heritage ◽  
Sustainability Strategies ◽  
Local Materials ◽  
Different Levels ◽  
Passive Techniques

The article deals with the traditional dwellings in the UNESCO World Heritage ancient settlements (ksour) of M’zab Valley in Algerian desert. The Mozabite habitats are reflection of cultural and social values embodied in the architecture, with simple design in their forms deep in their indications, they are organized with a set of principles and rules known as customs that were inspired by religion and adapted to the environment. This latter helped to preserve Mozabite dwellings for more than a millennium. In this article the attention has been drawn to the dwelling’s design and distribution of its spaces according the activities and lifestyle of Mozabite community considering the arid environment needs. Sustainability strategies have significant presence in different levels of the dwelling appearing from the usage of passive techniques which depend on the principles of conservation energy and water, exploiting renewable resources and usage of local materials. These techniques are what make dwellings integrate completely within arid climate.

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