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- Author:
- Brajendra K. Sharma, et al. ; Marttin Paulraj Gundupalli; Prapakorn Tantayotai; Elizabeth Jayex Panakkal; Santi Chuetor; Suchata Kirdponpattara; Anne Sahithi Somavarapu Thomas; Malinee Sriariyanun; Show all 8 Authors
- Source:
- Bioresource technology reports 2022 v.17 pp. 100957
- ISSN:
- 2589-014X
- Subject:
- Cenchrus purpureus; biomass; biorefining; cellulose; delignification; digestibility; glucose; hemicellulose; lignin; lignocellulose; response surface methodology; rice straw; saccharification; solvents; sugarcane bagasse
- Abstract:
- ... The combined effect of hydrothermal (HT) and deep eutectic solvent (DES) pretreatment on hemicellulose and lignin removal was studied to enhance cellulose digestibility during saccharification. The operating conditions (water loading and time) for HT pretreatment of sugarcane bagasse (SB) were optimized using response surface methodology (RSM). The SB optimum conditions were applied to other bioma ...
- Handle:
- 10113/7640909
- DOI:
- 10.1016/j.biteb.2022.100957
- https://doi.org/10.1016/j.biteb.2022.100957
- Author:
- Brajendra K. Sharma, et al. ; Xuesong Zhang; John Scott; Nandakishore Rajagopalan; Show all 4 Authors
- Source:
- Journal of membrane science 2020 v.614 pp. 118558
- ISSN:
- 0376-7388
- Subject:
- adsorption; artificial membranes; biofuels; biomass; carboxylic acids; coal; cost effectiveness; dissolved organic carbon; embodied energy; fouling; heat treatment; hydrothermal liquefaction; ketones; nanofiltration; nutrients; pH; phenolic compounds; ultrafiltration
- Abstract:
- ... A significant fraction of the embedded energy, carbon, and nutrients in biomass is lost to the aqueous phase during the hydrothermal liquefaction of biomass to bio-oil. The feasibility of concentrating the aqueous phase to recover and recycle the organics back to the hydrothermal liquefaction reactor using nanofiltration was investigated. The dissolved organic carbon content (~ 1 wt%) of the hydro ...
- DOI:
- 10.1016/j.memsci.2020.118558
- https://doi.org/10.1016/j.memsci.2020.118558
- Author:
- Brajendra K. Sharma, et al. ; Shahrzad Hosseinnezhad; Albert M. Hung; Masoumeh Mousavi; Elham Fini; Show all 5 Authors
- Source:
- ACS sustainable chemistry & engineering 2020 v.8 no.6 pp. 2390-2398
- ISSN:
- 2168-0485
- Subject:
- Fourier transform infrared spectroscopy; Miscanthus; alkanes; animal wastes; biomass; bitumen; carboxylic acids; corn stover; density functional theory; durability; energy-dispersive X-ray analysis; exposure duration; films (materials); ketones; light microscopy; oxygen; physicochemical properties; resistance mechanisms; scanning electron microscopy; ultraviolet radiation; ultraviolet-visible spectroscopy; wood products
- Abstract:
- ... This paper investigates the effect of ultraviolet exposure on the physicochemical properties of biomodified binders as well as their resistance mechanisms against aging. Biomodifiers were extracted from four biomass sources (wood pellet, miscanthus, corn stover, and animal waste) and blended with asphalt binder to produce biomodified binders. The effect of ultraviolet exposure on a thin film of a ...
- DOI:
- 10.1021/acssuschemeng.9b05490
- https://doi.org/10.1021/acssuschemeng.9b05490
- Author:
- Brajendra K. Sharma, et al. ; Minghao Zhou; Changzhou Chen; Peng Liu; Haihong Xia; Jing Li; Jianchun Jiang; Show all 7 Authors
- Source:
- ACS sustainable chemistry & engineering 2020 v.8 no.38 pp. 14511-14523
- ISSN:
- 2168-0485
- Subject:
- acidity; aviation; catalysts; cleavage (chemistry); cyclohexanes; ethylbenzene; green chemistry; lignin; phenol
- Abstract:
- ... Selective hydrotreatment of β-O-4 ether bonds in lignin is a key strategy for the lignin valorization. The current catalytic strategy can only transfer β-O-4 model compounds to aromatics. Also, further upgrading was still needed to convert those aromatics/phenols into aviation fuels or chemicals (e.g., cycloalkanes, cycloalcohols) in a following step. Herein, a one-pot method for the hydrotreatmen ...
- DOI:
- 10.1021/acssuschemeng.0c04941
- https://doi.org/10.1021/acssuschemeng.0c04941
- Author:
- Brajendra K. Sharma, et al. ; Arpit Dwivedi; Nandakishore Rajagopalan; Sanjiv Sinha; Show all 4 Authors
- Source:
- Industrial & engineering chemistry process design and development 2019 v.59 no.1 pp. 491-496
- ISSN:
- 1520-5045
- Subject:
- air; cobalt; cobalt oxide; corrosion; dissolved oxygen; hydroxides; models; nitrogen; reaction kinetics; temperature; thermal energy; water vapor
- Abstract:
- ... The hydrothermal decomposition of cobalt hydroxide is of importance in understanding corrosion in nuclear reactors, in the industrial production of cobaltous oxide, and potentially for thermal energy storage. The kinetics of decomposition in the presence of water vapor is poorly understood but nevertheless important in the above situations. The decomposition reaction has mainly been studied in air ...
- DOI:
- 10.1021/acs.iecr.9b05478
- https://doi.org/10.1021/acs.iecr.9b05478
6. Effective delignification of lignocellulosic biomass by microwave assisted deep eutectic solvents
- Author:
- Brajendra K. Sharma, et al. ; Kirtika Kohli; Sarmila Katuwal; Atanu Biswas; Show all 4 Authors
- Source:
- Bioresource technology 2020 v.303 pp. 122897
- ISSN:
- 0960-8524
- Subject:
- Miscanthus; biomass; choline chloride; delignification; dicarboxylic acids; feedstocks; hydrogen bonding; lignin; lignocellulose; microwave treatment; solvents; temperature; thermogravimetry; ultraviolet-visible spectroscopy
- Abstract:
- ... To establish an environmentally friendly and cheaper method to delignify lignocellulosic biomass feedstocks, deep eutectic solvents (DESs) were investigated as a green alternatives to conventional solvents. Six different DESs were facilely prepared and used to delignify miscanthus and birchwood feedstocks, including monocarboxylic acid/choline chloride (ChCl), dicarboxylic acid/ChCl and polyalcoho ...
- DOI:
- 10.1016/j.biortech.2020.122897
- https://doi.org/10.1016/j.biortech.2020.122897
- Author:
- Brajendra K. Sharma, et al. ; Yaxin Deng; Tao Zhang; Haiyu Nie; Show all 4 Authors
- Source:
- Science of the total environment 2019 v.646 pp. 1140-1154
- ISSN:
- 0048-9697
- Subject:
- Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; absorption; adsorption; anion exchange; carboxylic acids; digestion; electron transfer; electrostatic interactions; energy-dispersive X-ray analysis; factor analysis; hydrochars; hydrogen peroxide; magnesium; microalgae; phosphorus; scanning electron microscopy; sodium hydroxide; sorption isotherms
- Abstract:
- ... Considering the phosphorus (P) reserve state and its value, recovery of P from microalgae has become a popular topic. In this study, an integrated system of a hydrothermal process for microalgae cell disruption to release P and magnesium modified hydrochar adsorption to capture P was set up. Emission scanning electron microscopy with Energy Dispersive X-ray spectroscopy and Three-Dimensional Excit ...
- DOI:
- 10.1016/j.scitotenv.2018.07.369
- https://doi.org/10.1016/j.scitotenv.2018.07.369
- Author:
- Brajendra K. Sharma, et al. ; Kirtika Kohli; Ravindra Prajapati; Samir K. Maity; Show all 4 Authors
- Source:
- Journal of analytical and applied pyrolysis 2019 v.140 pp. 179-187
- ISSN:
- 0165-2370
- Subject:
- anthracenes; asphaltenes; distillates; feeds; fuels; hydrogen; naphthalene; oils; plastics; polymerization; pyrolysis; solvents; temperature; thermal cracking; transportation; wastes
- Abstract:
- ... Residue hydroprocessing requires a large quantity of hydrogen. The utilization of the low-cost hydrogen donor for the hydroprocessing reaction can helps to reduce the high cost of hydrogen. Generally, hydroaromatic compounds such as tetralin, decalin, naphthalene, and anthracene are considered solvents that are efficient for donating hydrogen. The present study investigates the use of waste plasti ...
- DOI:
- 10.1016/j.jaap.2019.03.013
- https://doi.org/10.1016/j.jaap.2019.03.013
- Author:
- Brajendra K. Sharma, et al. ; Yaxin Deng; Tao Zhang; James Clark; Tejraj Aminabhavi; Andrea Kruse; Daniel C. W. Tsang; Fusuo Zhang; Hongqiang Ren; Show all 9 Authors
- Source:
- Green chemistry 2020 v.22 no.17 pp. 5628-5638
- ISSN:
- 1463-9270
- Subject:
- calcium; green chemistry; hot water treatment; hydrochars; hydroxyapatite; ions; liquids; models; orthophosphates; phosphorus; pig manure; polymerization; prediction; total phosphorus
- Abstract:
- ... Phosphorus (P) recovery from swine manure by hydrothermal processes has recently attracted considerable interest; however, research has been limited by knowledge gaps and challenges in understanding the mechanisms of soluble and insoluble P transformations and the evaluation of the effects of the reaction conditions. In this study, the transformation mechanisms were investigated and the soluble an ...
- DOI:
- 10.1039/d0gc01281e
- https://doi.org/10.1039/d0gc01281e
- Author:
- Brajendra K. Sharma, et al. ; Elizabeth Meschewski; Nancy Holm; Kurt Spokas; Nicole Minalt; John J. Kelly; Show all 6 Authors
- Source:
- Chemosphere 2019 v.228 pp. 565-576
- ISSN:
- 0045-6535
- Subject:
- Chitinophagaceae; Gemmatimonadetes; Xanthomonadaceae; biochar; burning; carbon; cellulose; community structure; corn; corn stover; feedstocks; gasification; germination; grasses; greenhouse gases; hardwood; microbial communities; mineralization; nitrous oxide; nitrous oxide production; phytomass; plant pathogens; pyrolysis; seedling growth; soil; soil amendments; soil bacteria; soil quality; uncertainty
- Abstract:
- ... Biochar has been promoted as a soil amendment that enhances soil quality and agronomic productivity and reduces greenhouse gas production. However, these benefits are not always realized. A major hurdle to the beneficial use of biochar is our limited knowledge regarding the mechanisms directing its effects on soil systems. This project aimed to eliminate some of this uncertainty by examining the b ...
- DOI:
- 10.1016/j.chemosphere.2019.04.031
- https://doi.org/10.1016/j.chemosphere.2019.04.031
11. Improvement of Diesel Lubricity by Chemically Modified Tung-Oil-Based Fatty Acid Esters as Additives
- Author:
- Brajendra K. Sharma, et al. ; Zengshe Liu; Jing Li; Gerhard Knothe; Jiangchung Jiang; Show all 5 Authors
- Source:
- Energy & fuels 2019 v.33 no.6 pp. 5110-5115
- ISSN:
- 1520-5029
- Subject:
- additives; biodiesel; butanol; cycloaddition reactions; diesel fuel; equipment; fatty acid methyl esters; friction; hydrogenation; linolenic acid; maleic anhydrides; methanol; mixing; oils; sulfur
- Abstract:
- ... Diesel fuel lubricity has been a concern of diesel fuel injection equipment manufacturers for many years. The problem has drawn attention because of the reduction in lubricity associated with the extreme hydrogenation needed to reach the low sulfur levels required in modern diesel fuels. Ultralow-sulfur diesel (ULSD) fuels require higher concentrations of additives or blending with other materials ...
- DOI:
- 10.1021/acs.energyfuels.9b00854
- https://doi.org/10.1021/acs.energyfuels.9b00854
- Author:
- Brajendra K. Sharma, et al. ; Sriraam R. Chandrasekaran; Sumant Avasarala; Dheeptha Murali; Nandakishore Rajagopalan; Show all 5 Authors
- Source:
- ACS sustainable chemistry & engineering 2018 v.6 no.4 pp. 4594-4602
- ISSN:
- 2168-0485
- Subject:
- distillation; electronic wastes; energy efficiency; energy recovery; landfills; methanol; methylene chloride; oils; plastics; pollution; polyamides; polymethylmethacrylate; pyrolysis; recycling; solvents; styrene; value added; waste reduction
- Abstract:
- ... The objective of the current study was to investigate environmentally sustainable and energy efficient processes to recover value added material and energy from e-waste as a means to divert these nondegradable materials from landfills. We studied two different types of plastics (1) simple mixtures like polycarbonate/polyamide (PC/PA)) found in cell phone plastics for solvent extraction and (2) com ...
- DOI:
- 10.1021/acssuschemeng.7b03282
- https://doi.org/10.1021/acssuschemeng.7b03282
13. Plastic Solid Waste (PSW) in the Context of Life Cycle Assessment (LCA) and Sustainable Management
- Author:
- Brajendra K. Sharma, et al. ; Ana Antelava; Spyridon Damilos; Sanaa Hafeez; George Manos; Sultan M. Al-Salem; Kirtika Kohli; Achilleas Constantinou; Show all 8 Authors
- Source:
- Environmental management 2019 v.64 no.2 pp. 230-244
- ISSN:
- 0364-152X
- Subject:
- biofuels; databases; landfills; life cycle assessment; oils; process design; pyrolysis; socioeconomics; solid wastes
- Abstract:
- ... Over the past few decades, life cycle assessment (LCA) has been established as a critical tool for the evaluation of the environmental burdens of chemical processes and materials cycles. The increasing amount of plastic solid waste (PSW) in landfills has raised serious concern worldwide for the most effective treatment. Thermochemical post-treatment processes, such as pyrolysis, seem to be the mos ...
- DOI:
- 10.1007/s00267-019-01178-3
- PubMed:
- 31230103
- PubMed Central:
- PMC6687704
- https://doi.org/10.1007/s00267-019-01178-3
- Author:
- Brajendra K Sharma, et al. ; Minghao Zhou; Peng Liu; Jun Ye; Junming Xu; Jian-Chun Jiang; Show all 6 Authors
- Source:
- ACS sustainable chemistry & engineering 2018 v.6 no.5 pp. 6867-6875
- ISSN:
- 2168-0485
- Subject:
- biofuels; catalysts; catalytic activity; depolymerization; elemental composition; ethanol; lignin; molecular weight; phenol; solvents; synergism; temperature
- Abstract:
- ... This study aimed to explore the in situ hydrogenolysis of alkali lignin into bio-oil over three kinds of heterogeneous catalysts with varied catalytic properties (Ru/C, Ni/ZSM-5, and CuNiAl hydrotalcite-based catalyst) in supercritical ethanol. Phenol was first introduced to the in situ hydrogenolysis system to form a complex solvent to improve the lignin depolymerization over heterogeneous cataly ...
- DOI:
- 10.1021/acssuschemeng.8b00701
- https://doi.org/10.1021/acssuschemeng.8b00701
15. Microwave Assisted Depolymerization of Alkaline Lignin over Hydrotalcite-Based CuNiAl Mixed Oxides
- Author:
- Brajendra K. Sharma, et al. ; Minghao Zhou; Peng Liu; Haihong Xia; Junming Xu; Jian-chun Jiang; Show all 6 Authors
- Source:
- ACS sustainable chemistry & engineering 2018 v.6 no.9 pp. 11519-11528
- ISSN:
- 2168-0485
- Subject:
- biofuels; catalysts; chemical structure; copper; depolymerization; gas chromatography-mass spectrometry; guaiacol; hydrogen; hydrotalcite; lignin; liquids; matrix-assisted laser desorption-ionization mass spectrometry; methanol; microwave treatment; molecular weight; oxides; temperature
- Abstract:
- ... In this study, microwave assisted depolymerization of alkaline lignin into bio-oil was investigated in the presence of CuNiAl hydrotalcite based solid base catalysts in methanol. The effects of catalysts, reaction temperature, time, and heating methods were all studied in detail to improve the bio-oil yield. The promotion effect of microwave heating and Cu amount in the CuNiAl based catalysts was ...
- DOI:
- 10.1021/acssuschemeng.8b01697
- https://doi.org/10.1021/acssuschemeng.8b01697
- Author:
- Brajendra K. Sharma, et al. ; Steven C. Peterson; Sriraam R. Chandrasekaran; Show all 3 Authors
- Source:
- Journal of Elastomers & Plastics 2016 v.48 no.4 pp. 305-316
- ISSN:
- 0095-2443
- Subject:
- Betula; biochar; butadienes; carbon; feedstocks; plastics; pyrolysis; rubber; soot; styrene; tensile strength
- Abstract:
- ... Birchwood feedstock was used to make slow pyrolysis biochar that contained 89% carbon and <2% ash. This biochar was blended with carbon black (CB) as filler for styrene–butadiene rubber (SBR). Composites made from blended fillers of 25/75 biochar/CB were equivalent to or superior to their 100% CB analogs in terms of tensile strength and toughness at all filler concentrations. Composites made with ...
- Handle:
- 10113/5510073
- DOI:
- 10.1177/0095244315576241
- https://doi.org/10.1177/0095244315576241
- Author:
- Brajendra K. Sharma, et al. ; Indu Tripathi; Laurel K. Dodgen; Fatemeh Ostadhossein; Santosh K. Misra; Enrique Daza; Wei Zheng; Dipanjan Pan; Show all 8 Authors
- Source:
- Journal of materials chemistry A 2018 v.6 no.45 pp. 22951-22957
- ISSN:
- 2050-7496
- Subject:
- biodegradability; chemical pollutants; drug residues; ecosystems; filters; gemfibrozil; homeostasis; remediation; water resources
- Abstract:
- ... Emerging chemical contaminants such as pharmaceutical residues in water resources continue to threaten the homeostasis of our ecosystem. We have developed a ‘smart-filter’ comprising tunable, biodegradable, and commercially amenable pharmaceutical-nano-carbon-scavengers (PNCSs) to efficiently and safely remediate pharmaceutical residues. The PNCS particles successfully removed 63.5 ± 0.4% of carba ...
- DOI:
- 10.1039/c8ta05308a
- https://doi.org/10.1039/c8ta05308a
- Author:
- Brajendra K. Sharma, et al. ; Ling Zhao; Wei Zheng; Ondřej Mašek; Xiang Chen; Bowen Gu; Xinde Cao; Show all 7 Authors
- Source:
- Journal of environmental quality 2017 v.46 no.2 pp. 393-401
- ISSN:
- 0047-2425
- Subject:
- adsorption; biochar; biomass; carbon; crosslinking; energy; lead; micropores; phosphates; phosphoric acid; phosphorus; porosity; pyrolysis; sawdust; small-angle X-ray scattering; surface area; temperature
- Abstract:
- ... Pretreatment of biomass with phosphoric acid (H₃PO₄) for biochar production was expected to improve carbon (C) retention, porosity structure, and the sorption ability of biochar. This study investigated the interaction of phosphorus with the C structure to elucidate the mechanisms by which H₃PO₄ simultaneously captured C and created micropores. Sawdust was soaked in diluted H₃PO₄ and dried for pyr ...
- DOI:
- 10.2134/jeq2016.09.0344
- https://doi.org/10.2134/jeq2016.09.0344
- Author:
- Brajendra K. Sharma, et al. ; Yalin Li; Shijie Leow; Anna C. Fedders; Jeremy S. Guest; Timothy J. Strathmann; Show all 6 Authors
- Source:
- Green chemistry 2017 v.19 no.4 pp. 1163-1174
- ISSN:
- 1463-9270
- Subject:
- biochar; biofuels; biomass; biorefining; biosolids; carbohydrates; coproducts; energy recovery; feedstocks; gasification; green chemistry; hydrothermal liquefaction; industrial applications; lipids; microalgae; model validation; models; proteins; sludge; supply chain; temperature; total nitrogen; total organic carbon; wastewater
- Abstract:
- ... Optimized incorporation of hydrothermal liquefaction (HTL, reaction in water at elevated temperature and pressure) within an integrated biorefinery requires accurate models to predict the quantity and quality of all HTL products. Existing models primarily focus on biocrude product yields with limited consideration for biocrude quality and aqueous, gas, and biochar co-products, and have not been va ...
- DOI:
- 10.1039/c6gc03294j
- https://doi.org/10.1039/c6gc03294j
- Author:
- Brajendra K. Sharma, et al. ; Zhi Qu; Jianli Zeng; Yuanhui Zhang; Qiang Liao; Qian Fu; Yun Huang; Zhidan Liu; Show all 8 Authors
- Source:
- Algal research 2018 v.35 pp. 407-415
- ISSN:
- 2211-9264
- Subject:
- Nannochloropsis; biofuels; catalysts; cell walls; fatty acids; gas chromatography-mass spectrometry; glycolipids; hot water treatment; hydrocarbons; microalgae; phospholipids; scanning electron microscopy; tandem mass spectrometry; temperature; transmission electron microscopy; triacylglycerols
- Abstract:
- ... Cell wall disruption is a critical challenge for algal biofuel. Here, we reported Hydrothermal treatment (HTT) of high solid content (20% w/w) Nannochloropsis sp. and its influence on extraction of lipid. Various process variables were specifically studied including reaction temperature (120–200 °C) and retention time (0–60 min). SEM and TEM images revealed the cell morphology before and after HTT ...
- DOI:
- 10.1016/j.algal.2018.09.015
- https://doi.org/10.1016/j.algal.2018.09.015