Carbon Nanofi bers for Environmental Remediation— A Comprehensive Review

Heavy metal removal by biomass-derived carbon nanotubes as a greener environmental remediation: A comprehensive review

Chemosphere ◽

10.1016/j.chemosphere.2021.131959 ◽

2021 ◽

pp. 131959

Author(s):

Anh Tuan Hoang ◽

Sandro Nižetić ◽

Chin Kui Cheng ◽

Rafael Luque ◽

Sabu Thomas ◽

...

Keyword(s):

Carbon Nanotubes ◽

Heavy Metal ◽

Environmental Remediation ◽

Metal Removal ◽

Heavy Metal Removal ◽

Comprehensive Review

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A comprehensive review on physical activation of biochar for energy and environmental applications

Reviews in Chemical Engineering ◽

10.1515/revce-2017-0113 ◽

2019 ◽

Vol 35 (6) ◽

pp. 735-776 ◽

Cited By ~ 21

Author(s):

Baharak Sajjadi ◽

Wei-Yin Chen ◽

Nosa O. Egiebor

Keyword(s):

Physicochemical Properties ◽

Environmental Remediation ◽

Current Knowledge ◽

Conventional Heating ◽

Thermochemical Conversion ◽

Mineral Matter ◽

Complex Nature ◽

Physical Activation ◽

Comprehensive Review ◽

Wide Range

Abstract Biochar is a solid by-product of thermochemical conversion of biomass to bio-oil and syngas. It has a carbonaceous skeleton, a small amount of heteroatom functional groups, mineral matter, and water. Biochar’s unique physicochemical structures lead to many valuable properties of important technological applications, including its sorption capacity. Indeed, biochar’s wide range of applications include carbon sequestration, reduction in greenhouse gas emissions, waste management, renewable energy generation, soil amendment, and environmental remediation. Aside from these applications, new scientific insights and technological concepts have continued to emerge in the last decade. Consequently, a systematic update of current knowledge regarding the complex nature of biochar, the scientific and technological impacts, and operational costs of different activation strategies are highly desirable for transforming biochar applications into industrial scales. This communication presents a comprehensive review of physical activation/modification strategies and their effects on the physicochemical properties of biochar and its applications in environment-related fields. Physical activation applied to the activation of biochar is discussed under three different categories: I) gaseous modification by steam, carbon dioxide, air, or ozone; II) thermal modification by conventional heating and microwave irradiation; and III) recently developed modification methods using ultrasound waves, plasma, and electrochemical methods. The activation results are discussed in terms of different physicochemical properties of biochar, such as surface area; micropore, mesopore, and total pore volume; surface functionality; burn-off; ash content; organic compound content; polarity; and aromaticity index. Due to the rapid increase in the application of biochar as adsorbents, the synergistic and antagonistic effects of activation processes on the desired application are also covered.

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Photocatalysis for Heavy Metal Treatment: A Review

Processes ◽

10.3390/pr9101729 ◽

2021 ◽

Vol 9 (10) ◽

pp. 1729

Author(s):

Xinyu Gao ◽

Xiangchao Meng

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Environmental Remediation ◽

New Technology ◽

Comprehensive Review ◽

Metal Treatment ◽

Oxidation Technology ◽

Low Efficiency ◽

Future Work ◽

By Products

Environmental and human health are threatened by anthropogenic heavy metal discharge into watersheds. Traditional processes have many limitations, such as low efficiency, high cost, and by-products. Photocatalysis, an emerging advanced catalytic oxidation technology, uses light energy as the only source of energy. It is a clean new technology that can be widely used in the treatment of organic pollutants in water. Given the excellent adaptability of photocatalysis in environmental remediation, it can be used for the treatment of heavy metals. In this comprehensive review, the existing reported works in relevant areas are summarized and discussed. Moreover, recommendations for future work are provided.

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Recent advances in low temperature, solution processed morphology tailored ZnO nanoarchitectures for electron emission and photocatalysis applications

CrystEngComm ◽

10.1039/c5ce01130b ◽

2015 ◽

Vol 17 (48) ◽

pp. 9264-9295 ◽

Cited By ~ 69

Author(s):

Soumen Maiti ◽

Shreyasi Pal ◽

Kalyan Kumar Chattopadhyay

Keyword(s):

Low Temperature ◽

Field Emission ◽

Electron Emission ◽

Environmental Remediation ◽

Solution Processed ◽

Comprehensive Review ◽

Recent Advances ◽

Recent Developments ◽

Temperature Solution

A comprehensive review is given on recent developments of multidimensional nanostructural ZnO processed via low temperature solution approaches and their functional prospect in field emission and environmental remediation.

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The Handbook of Environmental Remediation

10.1039/9781788016261 ◽

2020 ◽

Cited By ~ 1

Keyword(s):

Environmental Remediation

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A peek in the micro-sized world: a review of design principles, engineering tools, and applications of engineered microbial community

Biochemical Society Transactions ◽

10.1042/bst20190172 ◽

2020 ◽

Vol 48 (2) ◽

pp. 399-409

Author(s):

Baizhen Gao ◽

Rushant Sabnis ◽

Tommaso Costantini ◽

Robert Jinkerson ◽

Qing Sun

Keyword(s):

Microbial Community ◽

Microbial Communities ◽

Environmental Remediation ◽

Real Life ◽

Design Principles ◽

Microbial Interactions ◽

Potential Applications ◽

New Gene ◽

Global Biogeochemical Cycles ◽

Synthetic Microbial Communities

Microbial communities drive diverse processes that impact nearly everything on this planet, from global biogeochemical cycles to human health. Harnessing the power of these microorganisms could provide solutions to many of the challenges that face society. However, naturally occurring microbial communities are not optimized for anthropogenic use. An emerging area of research is focusing on engineering synthetic microbial communities to carry out predefined functions. Microbial community engineers are applying design principles like top-down and bottom-up approaches to create synthetic microbial communities having a myriad of real-life applications in health care, disease prevention, and environmental remediation. Multiple genetic engineering tools and delivery approaches can be used to ‘knock-in' new gene functions into microbial communities. A systematic study of the microbial interactions, community assembling principles, and engineering tools are necessary for us to understand the microbial community and to better utilize them. Continued analysis and effort are required to further the current and potential applications of synthetic microbial communities.

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