Insight into Multiple and Multilevel Structures of Biochars and Their Potential Environmental Applications: A Critical Review

Environmental Science & Technology, Journal Year: 2018, Volume and Issue: 52(9), P. 5027 - 5047

Published: April 10, 2018

Biochar is the carbon-rich product of pyrolysis biomass under oxygen-limited conditions, and it has received increasing attention due to its multiple functions in fields climate change mitigation, sustainable agriculture, environmental control, novel materials. To design a "smart" biochar for environmentally applications, one must understand recent advances molecular structures explore potential applications generalize upon structure–application relationships. In this review, multilevel biochars are interpreted based on their elemental compositions, phase components, surface properties, structures. Applications such as carbon fixators, fertilizers, sorbents, carbon-based materials highlighted well structure-application Further studies suggested more detailed structural analysis separation combination macroscopic microscopic information develop higher-level selective applications.

Language: Английский

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Syntrophy Goes Electric: Direct Interspecies Electron Transfer

Annual Review of Microbiology, Journal Year: 2017, Volume and Issue: 71(1), P. 643 - 664

Published: July 12, 2017

Direct interspecies electron transfer (DIET) has biogeochemical significance, and practical applications that rely on DIET or DIET-based aspects of microbial physiology are growing. Mechanisms for have primarily been studied in defined cocultures which Geobacter species one the partners. Electrically conductive pili (e-pili) can be an important electrical conduit DIET. However, there may instances contacts made between transport proteins associated with outer membranes Alternatively, partners plug into carbon materials, such as granular activated carbon, cloth, biochar, long-range exchange without need e-pili. Magnetite promotes DIET, possibly by acting a substitute outer-surface c-type cytochromes. is primary mode some anaerobic digesters converting wastes to methane. Promoting materials shows promise stabilizing accelerating methane production digesters, permitting higher organic loading rates. Various lines evidence suggest terrestrial wetlands, source atmospheric also role oxidation coupled sulfate reduction, control releases. The finding serve electrons photosynthesis further broadens its potential environmental significance. Microorganisms capable good catalysts several bioelectrochemical technologies e-pili promising renewable electronic materials. study early stages, additional investigation required better understand diversity microorganisms importance flow environments, biochemistry

Language: Английский

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Applications of biochar in redox-mediated reactions

Bioresource Technology, Journal Year: 2017, Volume and Issue: 246, P. 271 - 281

Published: June 30, 2017

Language: Английский

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A Review of the Chemistry of Anaerobic Digestion: Methods of Accelerating and Optimizing Process Efficiency

Processes, Journal Year: 2019, Volume and Issue: 7(8), P. 504 - 504

Published: Aug. 2, 2019

The anaerobic digestion technology has been in existence for centuries and its underlying theory established decades. It is considered a useful the generation of renewable energy, provides means to alleviate problems associated with low access energy. However, great deal current research targeted towards optimization this under diverse process conditions. This review presents an in-depth analysis chemistry discusses how can be used optimize system performance through identification methods that accelerate syntrophic interactions different microorganisms improved methanogenic reactions. Recent advances addition old are discussed order offer general but comprehensive synopsis accumulated knowledge digestion, as well overview previous future directions opportunities AD technology. Achieving sustainable energy requires reforms not just economic, social policy aspects, also all technical which represents one most crucial investments systems.

Language: Английский

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Direct interspecies electron transfer via conductive materials: A perspective for anaerobic digestion applications

Bioresource Technology, Journal Year: 2018, Volume and Issue: 254, P. 300 - 311

Published: Feb. 2, 2018

Language: Английский

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Biochar alleviates combined stress of ammonium and acids by firstly enriching Methanosaeta and then Methanosarcina

Water Research, Journal Year: 2015, Volume and Issue: 90, P. 34 - 43

Published: Dec. 19, 2015

Language: Английский

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The challenges of anaerobic digestion and the role of biochar in optimizing anaerobic digestion

Waste Management, Journal Year: 2016, Volume and Issue: 61, P. 236 - 249

Published: Dec. 5, 2016

Language: Английский

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Biochar for Wastewater Treatment—Conversion Technologies and Applications

Applied Sciences, Journal Year: 2020, Volume and Issue: 10(10), P. 3492 - 3492

Published: May 18, 2020

Biochar as a stable carbon-rich material shows incredible potential to handle water/wastewater contaminants. Its application is gaining increasing interest due the availability of feedstock, simplicity preparation methods, and their enhanced physico-chemical properties. The efficacy biochar remove organic inorganic pollutants depends on its surface area, pore size distribution, functional groups, molecules be removed, while physical architecture properties depend nature feedstock method/conditions. For instance, pyrolysis at high temperatures generally produces hydrophobic biochars with higher area micropore volume, allowing it more suitable for contaminants sorption, whereas produced low own smaller size, lower oxygen-containing groups are In field treatment, can have extensive prospects. been widely used an additive/support media during anaerobic digestion filter removal suspended matter, heavy metals pathogens. was also tested efficiency support-based catalyst degradation dyes recalcitrant current review discusses different methods production provides overview applications in wastewater treatment.

Language: Английский

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Enhancing anaerobic digestion of complex organic waste with carbon-based conductive materials

Bioresource Technology, Journal Year: 2016, Volume and Issue: 220, P. 516 - 522

Published: Sept. 8, 2016

Language: Английский

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Methane Production and Conductive Materials: A Critical Review

Environmental Science & Technology, Journal Year: 2018, Volume and Issue: 52(18), P. 10241 - 10253

Published: Aug. 17, 2018

Conductive materials (CM) have been extensively reported to enhance methane production in anaerobic digestion processes. The occurrence of direct interspecies electron transfer (DIET) microbial communities, as an alternative or complementary indirect (via hydrogen formate), is the main explanation given justify improvement production. Not disregarding that DIET can be promoted presence certain CM, it surely does not explain all observations. In fact, methanogenic environments was only unequivocally demonstrated cocultures Geobacter metallireducens with Methanosaeta harundinacea Methanosarcina barkeri and frequently sp. are detected improved driven systems. Furthermore, conductive carbon nanotubes were shown accelerate activity methanogens growing pure cultures, where expected occur, hydrogenotrophic ubiquitous full-scale digesters treating for example brewery wastewaters, indicating important mechanism those This paper presents overview effect several iron-based carbon-based CM bioengineered systems, focusing on communities' changes. Control assays, fundamental elements support major conclusions experiments, critically revised discussed.

Language: Английский

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