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The combined effects of biomass and temperature on maximum specific ammonia oxidation rate in domesticwastewater treatment

《环境科学与工程前沿（英文）》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1411-9

摘要：

• Actual SAORs was determined using MLVSS and temperature.

关键词： Specific ammonia oxidation rate     Sequencing batch reactor     Biomass     Temperature coefficient     Model simulation    

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Interaction of carbonaceous nanomaterials with wastewater biomass

Yu YANG,Zhicheng YU,Takayuki NOSAKA,Kyle DOUDRICK,Kiril HRISTOVSKI,Pierre HERCKES,Paul WESTERHOFF

《环境科学与工程前沿（英文）》 2015年 第9卷 第5期   页码 823-831 doi: 10.1007/s11783-015-0787-9

摘要： Increasing production and use of carbonaceous nanomaterials (NMs) will increase their release to the sewer system and to municipal wastewater treatment plants. There is little quantitative knowledge on the removal of multi-walled carbon nanotubes (MWCNTs), graphene oxide (GO), or few-layer graphene (FLG) from wastewater into the wastewater biomass. As such, we investigated the quantification of GO and MWCNTs by UV-Vis spectrophotometry, and FLG using programmable thermal analysis (PTA), respectively. We further explored the removal of pristine and oxidized MWCNTs (O-MWCNTs), GO, and FLG in a biomass suspension. At least 96% of pristine and O-MWCNTs were removed from the water phase through aggregation and 30-min settling in presence or absence of biomass with an initial MWCNT concentration of 25 mg·L . Only 65% of GO was removed with biomass concentration at or above 1,000 mg·L as total suspended solids (TSS) with the initial GO concentration of 25 mg·L . As UV-Vis spectrophotometry does not work well on quantification of FLG, we studied the removal of FLG at a lower biomass concentration (50 mg TSS·L ) using PTA, which showed a 16% removal of FLG with an initial concentration of 1 mg·L . The removal data for GO and FLG were fitted using the Freundlich equation ( = 0.55, 0.94, respectively). The data presented in this study for carbonaceous NM removal from wastewater provides quantitative information for environmental exposure modeling and life cycle assessment.

关键词： multi-walled carbon nanotubes     graphene oxide     graphene     removal     wastewater biomass    

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Mixed culture of

Kishore Gopalakrishnan, Javad Roostaei, Yongli Zhang

《环境科学与工程前沿（英文）》 2018年 第12卷 第4期 doi: 10.1007/s11783-018-1075-2

摘要：

RSM is used to explore the impact of different parameter on algal growth response.

Mixed algal culture promotes algal biomass and lipid accumulation.

Optimized conditions achieve maximum productivity of algal biomass and lipid.

关键词： Algal biofuels     Algal mixed cultures     Algal biomass     Algal lipid     Wastewater     Response surface methodology    

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Will biomass be used for bioenergy or transportation biofuels?What drivers will influence biomass allocation

Jinguang HU, William James CADHAM, Susan van DYK, Jack N. SADDLER

《农业科学与工程前沿（英文）》 2017年 第4卷 第4期   页码 473-481 doi: 10.15302/J-FASE-2017168

摘要： Potential competition for biomass for current and future bioenergy/biofuel uses in Brazil, Denmark, Sweden and the USA were compared. In each of these countries, bioenergy and biofuels are already important in their energy mix. However, there is limited competition for biomass between bioenergy (heat/power/residential/industrial) and transportation biofuel applications. This situation is likely to continue until advanced biofuel technology becomes much more commercially established. In each of these countries, biomass is predominantly used to produce bioenergy, even in those regions where biofuels are significant component of their transportation sector (Brazil, Sweden and USA). The vast majority of biofuel production continues to be based on sugar, starch and oil rich feedstocks, while bioenergyis produced almost exclusively from forest biomass with agricultural biomass having a small, but increasing, secondary role. Current and proposed commercial scale biomass-to-ethanol facilities almost exclusively use agriculture derived residues (corn stover/wheat straw/sugarcane bagasse). Competition for biomass feedstocks for bioenergy/biofuel applications, is most likely to occur for agricultural biomass with coproduct lignin and other residues used to concomitantly produce heat and electricity on site at biofuel production facilities.

关键词： bioenergy     biofuel     biomass     renewable energy policy    

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NUMERICAL MODELING OF BIOMASS GASIFICATION USING COW DUNG AS FEEDSTOCK

《农业科学与工程前沿（英文）》 2023年 第10卷 第3期   页码 458-467 doi: 10.15302/J-FASE-2023500

摘要：

● Gasification of cow dung was evaluated using Aspen Plus software.

关键词： Aspen Plus     biomass gasification     manure of livestock and poultry     simulation     syngas    

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Catalytic conversion of biomass-derived compounds to various amino acids: status and perspectives

《化学科学与工程前沿（英文）》 2023年 第17卷 第7期   页码 817-829 doi: 10.1007/s11705-022-2254-z

摘要： Amino acids are important nitrogen-containing chemicals that have a variety of applications. Currently, fermentation is the widely employed method to produce amino acids; however, the products are mostly limited to natural amino acids in the L-configuration. Catalytic synthesis is an alternative approach for the synthesis of amino acids with different types and configurations, where the use of renewable biomass-based feedstocks is highly attractive. To date, several lignocellulose and triacylglycerol-derived intermediates, typically α-keto acids and α-hydroxyl acids, have been transformed into amino acids via the amination reaction in the presence of additional nitrogen sources (i.e., NH3·H2O). Making full use of inherent nitrogen in biomass (i.e., chitin and protein) to produce amino acids avoids the use of extra nitrogen sources and meets the requirements of green chemistry, which is attracting increasing attention. In this review, we summarize different chemical-catalytic systems for the transformation of biomass to amino acids. An outlook on the challenges and opportunities for more effective production of amino acids from biomass by catalytic methods is provided.

关键词： biomass     amino acids     chitin     nitrogen-containing compounds     lignocellulose    

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Review of the direct thermochemical conversion of lignocellulosic biomass for liquid fuels

Jianchun JIANG,Junming XU,Zhanqian SONG

《农业科学与工程前沿（英文）》 2015年 第2卷 第1期   页码 13-27 doi: 10.15302/J-FASE-2015050

摘要： Increased demand for liquid transportation fuels, environmental concerns and depletion of petroleum resources requires the development of efficient conversion technologies for production of second-generation biofuels from non-food resources. Thermochemical approaches hold great potential for conversion of lignocellulosic biomass into liquid fuels. Direct thermochemical processes convert biomass into liquid fuels in one step using heat and catalysts and have many advantages over indirect and biological processes, such as greater feedstock flexibility, integrated conversion of whole biomass, and lower operation costs. Several direct thermochemical processes are employed in the production of liquid biofuels depending on the nature of the feedstock properties: such as fast pyrolysis/liquefaction of lignocellulosic biomass for bio-oil, including upgrading methods, such as catalytic cracking and hydrogenation. Owing to the substantial amount of liquid fuels consumed by vehicular transport, converting biomass into drop-in liquid fuels may reduce the dependence of the fuel market on petroleum-based fuel products. In this review, we also summarize recent progress in technologies for large-scale equipment for direct thermochemical conversion. We focus on the technical aspects critical to commercialization of the technologies for production of liquid fuels from biomass, including feedstock type, cracking catalysts, catalytic cracking mechanisms, catalytic reactors, and biofuel properties. We also discuss future prospects for direct thermochemical conversion in biorefineries for the production of high grade biofuels.

关键词： lignocellulosic biomass     thermochemical     liquid fuels     upgrading     biofuels    

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Latest advances in ionic liquids promoted synthesis and application of advanced biomass materials

《化学科学与工程前沿（英文）》 2023年 第17卷 第7期   页码 798-816 doi: 10.1007/s11705-023-2316-x

摘要： The utilization of sustainable resources provides a path to relieving the problem of dependence on fossil resources. In this context, biomass materials have become a feasible substitute for petroleum-based materials. The development of biomass materials is booming and advanced biomass materials with various functional properties are used in many fields including medicine, electrochemistry, and environmental science. In recent years, ionic liquids have been widely used in biomass pretreatments and processing owing to their “green” characteristics and adjustable physicochemical properties. Thus, the effects of ionic liquids in biomass materials generation require further study. This review summarizes the multiple roles of ionic liquids in promoting the synthesis and application of advanced biomass materials as solvents, structural components, and modifiers. Finally, a prospective approach is proposed for producing additional higher-quality possibilities between ionic liquids and advanced biomass materials.

关键词： biomass materials     functional materials     ionic liquids     synthesis     structure-property relationship    

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Construction of sustainable, colored and multifunctional protein silk fabric using biomass riboflavin

《化学科学与工程前沿（英文）》 2023年 第17卷 第8期   页码 1131-1139 doi: 10.1007/s11705-023-2321-0

摘要： Riboflavin sodium phosphate has been confirmed as a promising biomass product derived from natural plants. In this paper, a novel method of dyeing and multifunctional modification of silk fabric by impregnation with riboflavin sodium phosphate was proposed, such that protein silk fabric can be endowed with bright yellow color and multi-functionality. The results of this paper confirmed that the pH and concentration of riboflavin sodium phosphate solution are critical factors for dyeing and multifunctional modification. Attractively, the photochromic performance was one of the most distinctive features of the modified silk fabric, and the dyed silk fabric turned into fluorescent green from original yellow under 365 nm ultraviolet lamp. Furthermore, the modified silk fabric exhibited good antibacterial properties with a high inhibition rate of 92% for Escherichia coli. Besides, the flame retardancy of silk fabric was significantly improved after modification. The damaged length of modified silk fabric with 40% owf riboflavin sodium phosphate was lower than 10.4 cm and passed the B1 classification. As revealed by the result of this paper, riboflavin sodium phosphate is sufficiently effective in serving as an eco-friendly multifunctional agent for strengthening the add-value of silk textiles.

关键词： biomass     riboflavin sodium phosphate     silk protein     multifunctional modification     flame retardant    

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Emulsification for castor biomass oil

Dongxiang ZHANG, Yuanping LIN, Anmei LI, V. V. TARASOV

《化学科学与工程前沿（英文）》 2011年 第5卷 第1期   页码 96-101 doi: 10.1007/s11705-010-0553-2

摘要： The effect of the emulsifier formula on the stability of castor oil-water system was studied through compounding three groups of emulsifiers from the aspects of stability factor of absorbance, centrifuge stability, demulsification time in quiescence, appearance of the droplets, and viscosity. The best emulsifier formula for castor biomass oil was the composite formula of sorbitan monooleate and polyoxyethylene sorbitan monostearate. Correlation exists between the stability of emulsion and the viscosity/particle size of the droplets, with better stability in the case of greater viscosity or narrower distribution of particle size in the emulsion of castor oil-water system. Methanol added to the castor oil-water system may decrease the viscosity of the emulsion. Comparing the castor oil-water emulsion with methanol-castor oil-water emulsion, the optimal hydrophilic and lipophilic balance (HLB) value based on castor oil-water system was acquired between 6.6 and 7.5, while the optimal HLB value based on the methanol-castor oil-water system was between 5.5 and 6.0. The optimal HLB value of methanol-castor oil-water system gradually moved to that of castor oil-water emulsion with adding more water.

关键词： castor oil     biomass oil     emulsification     stability     viscosity     corrosivity    

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Mass and heat balance calculations and economic evaluation of an innovative biomass pyrolysis project

Quanyuan WEI, Yongshui QU, Tianwei TAN

《化学科学与工程前沿（英文）》 2011年 第5卷 第3期   页码 355-361 doi: 10.1007/s11705-010-0567-9

摘要： Biomass can be converted into flammable gas, charcoal, wood vinegar, wood tar oil and noncombustible materials with thermo-chemical pyrolysis reactions. Many factors influence these processes, such as the properties of the raw materials, and temperature control and these will affect the products that are produced. Based on the data from a straw pyrolysis demonstration project, the mass and heat balance of the biomass pyrolysis process were analyzed. The statistical product and service solutions (SPSS) statistical method was used to analyze the data which were monitored on-site. A cost-benefit analysis was then used to study the viability of commercializing the project. The analysis included net present value, internal rate of return and investment payback period. These results showed that the straw pyrolysis project has little risk, and will produce remarkable economic benefits.

关键词： mass balance     heat balance     biomass pyrolysis     economic benefit    

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Investigation of the roles of lignin in biomass-based hydrogel for efficient desalination

《化学科学与工程前沿（英文）》 2023年 第17卷 第7期   页码 954-965 doi: 10.1007/s11705-023-2311-2

摘要： The shortage of freshwater has become a global challenge, and solar-driven interfacial evaporation for desalination is a promising way to alleviate the crisis. To develop highly efficient and environmentally friendly photothermal evaporator, the hydroxyethyl cellulose (HEC)/alkaline lignin (AL)/graphene oxide (GO) hydrogels (CLGs) with remarkable evaporative performance were successfully fabricated by a facile sol–gel method using biomass residues. The influence of AL content on the physicochemical properties of the evaporator was investigated. The increasing content of AL improves the mechanical properties, saturated water content and crosslink density of the hydrogels. The designed materials exhibit outstanding thermal insulation capacity (the thermal conductivity of less than 0.05 W·m–1·K–1) and high light absorption capacity of more than 97%. The solar evaporation efficiency and water evaporation rate of the HEC/64 wt % of AL/GO hydrogels (CLG4) achieve 92.1% and 2.55 kg·m–2·h–1 under 1 sun, respectively. The salt resistance test results reveal that the evaporation rate of the CLG4 can still reach 2.44 kg·m–2·h–1 in 3.5 wt % NaCl solution. The solar evaporation rate of the CLG4 can maintain in the range of 2.45–2.59 kg·m–2·h–1 in five cycles. This low-cost lignin-based photothermal evaporator offers a sustainable strategy for desalination.

关键词： lignin     photothermal     cellulose     desalination     hydrogel    

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Revealing the GHG reduction potential of emerging biomass-based CO utilization with an iron cycle system

《环境科学与工程前沿（英文）》 2023年 第17卷 第10期 doi: 10.1007/s11783-023-1727-8

摘要：

● Greenhouse gas mitigation by biomass-based CO2 utilization with a Fe cycle system.

关键词： Carbon dioxide utilization     Hydrothermal reactions     Biomass-based CO2 reduction     Simulation     Ex-ante LCA    

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Performance evaluation of an improved biomass-fired cogeneration system simultaneously using extraction

《能源前沿（英文）》 2022年 第16卷 第2期   页码 321-335 doi: 10.1007/s11708-021-0741-4

摘要： An advanced cogeneration system based on biomass direct combustion was developed and its feasibility was demonstrated. In place of the traditional single heat source (extraction steam), the extraction steam from the turbine, the cooling water from the plant condenser, and the low-pressure feedwater from the feedwater preheating system were collectively used for producing district heat in the new scheme. Hence, a remarkable energy-saving effect could be achieved, improving the overall efficiency of the cogeneration system. The thermodynamic and economic performance of the novel system was examined when taking a 35 MW biomass-fired cogeneration unit for case study. Once the biomass feed rate and net thermal production remain constant, an increment of 1.36 MW can be expected in the net electric production, because of the recommended upgrading. Consequently, the total system efficiency and effective electrical efficiency augmented by 1.23 and 1.50 percentage points. The inherent mechanism of performance enhancement was investigated from the energy and exergy aspects. The economic study indicates that the dynamic payback period of the retrofitting project is merely 1.20 years, with a net present value of 5796.0 k$. In conclusion, the proposed concept is validated to be advantageous and profitable.

关键词： biomass-fired cogeneration     district heat production system     absorption heat pump     extraction steam     cooling water     low-pressure feedwater    

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A review on co-pyrolysis of agriculture biomass and disposable medical face mask waste for green fuel

《化学科学与工程前沿（英文）》 2023年 第17卷 第9期   页码 1141-1161 doi: 10.1007/s11705-022-2230-7

摘要： The Association of Southeast Asian Nations is blessed with agricultural resources, and with the growing population, it will continue to prosper, which follows the abundance of agricultural biomass. Lignocellulosic biomass attracted researchers’ interest in extracting bio-oil from these wastes. However, the resulting bio-oil has low heating values and undesirable physical properties. Hence, co-pyrolysis with plastic or polymer wastes is adopted to improve the yield and quality of the bio-oil. Furthermore, with the spread of the novel coronavirus, the surge of single-use plastic waste such as disposable medical face mask, can potentially set back the previous plastic waste reduction measures. Therefore, studies of existing technologies and techniques are referred in exploring the potential of disposable medical face mask waste as a candidate for co-pyrolysis with biomass. Process parameters, utilisation of catalysts and technologies are key factors in improving and optimising the process to achieve commercial standard of liquid fuel. Catalytic co-pyrolysis involves a series of complex mechanisms, which cannot be explained using simple iso-conversional models. Hence, advanced conversional models are introduced, followed by the evolutionary models and predictive models, which can solve the non-linear catalytic co-pyrolysis reaction kinetics. The outlook and challenges for the topic are discussed in detail.

关键词： biomass     COVID-19 waste     catalyst     pyrolysis     kinetics    

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标题 作者 时间 类型 操作

The combined effects of biomass and temperature on maximum specific ammonia oxidation rate in domesticwastewater treatment

期刊论文

Interaction of carbonaceous nanomaterials with wastewater biomass

Yu YANG,Zhicheng YU,Takayuki NOSAKA,Kyle DOUDRICK,Kiril HRISTOVSKI,Pierre HERCKES,Paul WESTERHOFF

期刊论文

Mixed culture of

Kishore Gopalakrishnan, Javad Roostaei, Yongli Zhang

期刊论文

Will biomass be used for bioenergy or transportation biofuels?What drivers will influence biomass allocation

Jinguang HU, William James CADHAM, Susan van DYK, Jack N. SADDLER

期刊论文

NUMERICAL MODELING OF BIOMASS GASIFICATION USING COW DUNG AS FEEDSTOCK

期刊论文

Catalytic conversion of biomass-derived compounds to various amino acids: status and perspectives

期刊论文

Review of the direct thermochemical conversion of lignocellulosic biomass for liquid fuels

Jianchun JIANG,Junming XU,Zhanqian SONG

期刊论文

Latest advances in ionic liquids promoted synthesis and application of advanced biomass materials

期刊论文

Construction of sustainable, colored and multifunctional protein silk fabric using biomass riboflavin

期刊论文

Emulsification for castor biomass oil

Dongxiang ZHANG, Yuanping LIN, Anmei LI, V. V. TARASOV

期刊论文

Mass and heat balance calculations and economic evaluation of an innovative biomass pyrolysis project

Quanyuan WEI, Yongshui QU, Tianwei TAN

期刊论文

Investigation of the roles of lignin in biomass-based hydrogel for efficient desalination

期刊论文

Revealing the GHG reduction potential of emerging biomass-based CO utilization with an iron cycle system

期刊论文

Performance evaluation of an improved biomass-fired cogeneration system simultaneously using extraction

期刊论文

A review on co-pyrolysis of agriculture biomass and disposable medical face mask waste for green fuel

期刊论文