RuralBioUp的动态

Feasibility study of powdered activated carbon membrane bioreactor (PAC-MBR) for source-separated urine treatment: A comparison with MBR https://lnkd.in/gFKE4ni6 ?PAC-MBR improved organic removal efficiency from 88.6?±?2.9?% to 96.0?±?1.2?%. ?PAC addition promoted rapid biomass growth. ?The sludge floc size has increased by 17?%. ?Over 99?% removal of micropollutants achieved by PAC adsorption and biodegradation. ?The membrane fouling propensities has been reduced.

Feasibility study of powdered activated carbon membrane bioreactor (PAC-MBR) for source-separated urine treatment: A comparison with MBR https://lnkd.in/gDW2uHfQ ?PAC-MBR improved organic removal efficiency from 88.6?±?2.9?% to 96.0?±?1.2?%. ?PAC addition promoted rapid biomass growth. ?The sludge floc size has increased by 17?%. ?Over 99?% removal of micropollutants achieved by PAC adsorption and biodegradation. ?The membrane fouling propensities has been reduced.

Biochar can be used as a catalyst for efficient furfural production from corncob pre-hydrolysis liquor in a biphasic system using dichloromethane and NaCl. The process achieved high yield and selectivity, with excellent catalyst recyclability, offering a sustainable alternative for converting biomass into valuable chemicals. https://buff.ly/3Y81Q4W #Biochar #Pyrolysis #CarbonCapture

How to handle vapors containing dichloromethane (DCM)? ??????????????????????????????'s volatility and its ability to dissolve a wide range of organic compounds make it a valuable solvent for numerous chemical processes. Its ???????? ???????????????????????? ???? ?? ?????????????? include: ??Extraction of caffeine compounds in the coffee industry ??Solvent for tetrabutylammonium borohydride ??Solvent in various reactions in the pharmaceutical industry ??Solvent in polarographic techniques for nickel determination ??Extraction of metal complexes ??Paint remover ??Pesticide ??Lipid extraction However, its ???????????????????? and ?????????????????????????? ???????????? drive the search for safer alternatives where applicable. While there are various techniques for removing it in the gas phase, ?????????????????? ???????????????????????? ???????? ???????????? ???????????????? is particularly suitable for cases with low flow rates and high concentrations. This technique involves using the vaporization of liquid nitrogen as a cooling medium to condense DCM vapors on the surface of the condenser. The evaporated nitrogen can be reused in the customer's network. To gain an overview of the conventional applications of dichloromethane and similar conventional solvents, along with their less conventional alternatives, I came across this interesting review by Shah et al. Published in "Biomass Conversion and Biorefinery." An example reported is in the ?????????????? ???????????????????? ????????????????, where ??-???????????? ?????????????????????????????? (2-MeTHF) emerges as a superior, green alternative to dichloromethane and toluene at high temperatures. Not only is 2-MeTHF biomass-derived, making it a renewable resource, but it also boasts biodegradability. 2-MeTHF stands out as an effective replacement for other chemicals like THF and MTBE, showcasing the industry's potential for adopting ???????? ?????????????????????? ?????????????? ??????????????????. ?? Source: P. Shah et al., Biomass Conversion and Biorefinery 12 (2022) 1985-1999 https://lnkd.in/ermUyZjj ? ?? Discover more about cryogenic condensation: https://lnkd.in/evUR4cG6 #GreenChemistry #SustainableSolutions #CryogenicCondensation

#Biomass #pyrolysis, a process that converts organic matter into #biochar and volatile gases, can generate significant steam. Researchers explored the potential of utilizing this steam for #biocharactivation, aiming to recover its energy and enhance the resulting material’s adsorption properties. https://lnkd.in/g6SHANR5

Paper ALERT on Biomass and Bioenergy ?? Electrodialysis is widely used for water desalination. But it can be a valid route to reduce ashes from waste-derived glycerol. The electricity demand is currently very high (at laboratory scale) but the level of purification and glycerol recovery are very high hence worth of exploring as possible solution for waste recovery and valorisation. The results of this study are part of the collaboration between The University of Manchester and Argent Energy in the GLAMOUR Horizon 2020. Another important milestone of the research project of Taha Attarbachi, co-authored by Kara Thomas and Martin Kingsley. #biofuel #wasterecovery #desalination #electrodialysis #cleantechnology

We convert biomass(agricultural residue, MSW, organic materials, etc.) into biofuel, such as briquettes, pilllet, pyrolysis oil, syngas, etc. This helps to create jobs and at the same time to keep environment good and healthy, etc. #CEIP #CBP #circulareconomy #circularproductcatalogue #circularbusinesses

This #feedstockfriday we look at how #hemicellulose can be converted into industrial sugars as part of our process in the #LeunaBiorefinery. Being an important component of lignocellulosic biomass, the conversion of hemicellulose to biomaterials is important to maximize the yield of the biomass in our biorefinery concept. ?? As part of the pre-treatment process, the hemicellulose is separated and converted into industrial sugars. ?? Hemicellulose-based industrial sugars can be processed further into a large variety of products including fuel, food and polymers for diverse applications. In our biorefinery in Leuna, we will combine the best of wood processing technology with innovative chemistry, to refine the biomass into high-value base and performance?chemicals. #upmbiorefining #upmbiochemicals #beyondfossils

Making painkiller from trees! ? Researchers have developed an economically viable and eco-friendly method for producing a widely used pain reliever, paracetamol/acetaminophen, utilizing plant sources rather than petroleum. The first step of the process involves, the production of p-hydroxybenzamide from p-hydroxybenzoate esters isolated from the lignin biomass (obtained from plants such as poplar and palm trees). In the subsequent step, a continuous reaction process is employed to convert p-hydroxybenzamide into p-aminophenol via the Hofmann rearrangement. In the final stage of the process, p-aminophenol is acetylated to produce paracetamol, which can be easily isolated through liquid/liquid extraction at a purity exceeding 95%. This process demonstrates an overall yield of approximately 90% from p-hydroxybenzamide to paracetamol. The process predominantly utilizes water as a solvent, incorporates environmentally friendly solvents, and operates continuously rather than through batch reactions, rendering it well-suited for industrial use. Access to the paper can be found in the comments section. ? #greenchemistry #paracetamol #biomass ? Photo credit: David Gould/Getty Images

Increasing biogas quantity and quality from anaerobic digestion Biogas potential is?the amount of biogas that can be produced from various sources, such as crop residues, animal manure, and municipal and industrial wastes.?Biogas is produced through anaerobic digestion, a process that breaks down biomass into methane, carbon dioxide, and other gases.. Research on this topic suggests that targeted nutrient supplementation could be one of the effective method to enhance the methane content and volume of digestion biogas, Supplementation of anaerobic digesters with small amounts of trace inorganic nutrients, e.g. nickel; cobalt; manganese; iron, have shown to: *Stimulates bacterial activity These nutrients stimulate bacterial activity, which can lead to more biogas production.? ? *Improves process stability Trace metals like iron and nickel are part of cofactors that help microorganisms grow and enzymes function, which can improve process stability.? ? *Increases methane production Adding trace metals can increase the amount of methane produced, either by increasing the amount of biogas or by increasing the percentage of methane in the biogas. The trace supplementation could be a great way to increase microbial society and enhance their function thereby increasing yield and stabilizing the process. #anaerobicdigestion #biogas #biomethane #methanogenesis #acidogenesis #optimization #supplementation #stability #AD #biomethanepotential #CH4 #fermentation #traceminerals