| 1 | Processes for the valorization of food and agricultural wastes to value‑added products:recent practices and perspectives显示文摘Biorefneries contribute to a circular bioeconomy using renewable feedstock to produce commodity and specialty chemicals as an alternative to petroleum chemicals.Using waste streams such as food waste and agricultural waste as a feedstock for biorefneries is a promising approach for obtaining value-added products in an economically feasible and sustainable way.The conversion of biomass to chemicals ofers diverse opportunities but poses new technological challenges.This paper aims to review the current state of food and agricultural waste valorisation by giving a brief technical overview,summarizing the current state of the bio-based market,and identifying the current barriers to scaling-up biorefneries.Utilizing lignocellulosic biomass in biorefneries calls for pre-treatment due to its complex structure,in which biomass is broken into monosaccharides,building blocks of value-added products.Diferent state of the art technologies for lignocellulose pre-treatment is introduced in the review followed by a brief explanation of the role of the hydrolysis and fermentation.The economic aspect of chemical production from biomass waste at an industrial scale is also introduced by giving an overview of some recent techno-economic studies. | Anna Kover Doris Kraljić Rose Marinaro Eldon R.Rene | 2022 | Systems Microbiology and Biomanufacturing2022，2，1： | 2 |
| 2 | Nitrate removal from groundwater using chemically modified coconut husk based granular activated carbon:characterization of the adsorbent,kinetics and mechanism显示文摘In this study,a highly porous chemically activated granular activated carbon(GAC)was prepared from coconut husk and tested as an adsorbent to remove nitrate from contaminated groundwater.The prepared GAC was characterized by Fouriertransform infrared spectroscopy(FTIR),thermogravimetric and differential thermal analysis(TGA/DTA),scanning electron microscopy(SEM)and the Brunauer-Emmett-Teller(BET)surface area(SBET)analysis.The effects of various process parameters such as initial nitrate concentration,contact time and adsorbent dose on nitrate removal efficiency(response)by the modified GAC were investigated using the statistically significant response surface methodology and Box-Behnken design of experiments.The experimental data were fitted to well-known adsorption isotherms and kinetic models to ascertain the mechanism of the adsorption process.Analysis of variance(ANOVA)was performed to determine the significance of the individual and the interactive effects of process variables on the response.The BET surface area(SBET)and micropore volume of the prepared GAC from coconut husk was 1120 m^(2)/g and 0.392 cm^(3)/g,respectively.The experimental results showed that physisorption was the main adsorption mechanism governing the process,while the rate of adsorption was limited at initial nitrate concentrations>10 mg/L.The Langmuir mono-layer adsorption isotherm best fitted the experimental data with a maximum adsorption capacity of 6.0±1.3 mg/g(~92.5%)with an adsorbent dose of 0.1 g/50 mL,an equilibrium time of 6 h at 28±2℃,and at pH 7.6(±0.2).Among the tested process variables,the adsorbent dose and initial nitrate concentration showed significant effects on the nitrate removal efficiency. | Solomon K.M.Huno Jewel Das Eric Dvan Hullebusch Ajit P.Annachhatre Eldon R.Rene | 2023 | Systems Microbiology and Biomanufacturing2023，3，2： | 0 |
| 3 | Removal and recovery of nutrients and value‑added products from wastewater:technological options and practical perspective显示文摘Wastewaters from various process industries,namely food and agricultural,sugar mill,brewery,milk,vegetable and fruit,and meat and fsheries processing industries and their wastewater efuents contain nutrients,organic matter,inorganic,heavy metals,suspended solids,and pathogens.The discharges of non-treated wastewater enter the nearby aquatic ecosystem(e.g.,lakes,rivers)and are a signifcant concern due to the presence of diferent nutrients,competing ions and C containing pollutants.It causes excessive growth of algae,loss of habitat/species,and other negative impacts on human health/environment.In the present review,diferent treatment approaches have been discussed in utilizing these nutrients to synthesize value-added products such as biopolymer,biofuel,pigment,organic acid,or enzymes.These biopolymers can be used to prepare various food products/packaging materials.Dextran,chitosan,carrageenan,alginate,and pectin are good examples of non-food biopolymers.Besides these products,poly-β-hydroxybutyrate(PHB)synthesis from wastewater nutrients is reported as a new source of bio-nanocomposite materials/biopolymer-based coatings.In this review,the diferent treatment approaches are discussed,which are being used worldwide for the removal/recovery of nutrients,toxic pollutants,and the potential resource recovery of value-added products from wastewater. | Rajesh K.Srivastava Ramyakrishna Pothu Cesar Pasaran Sanchez Torsha Goswami Sudip Mitra Eldon R.Rene Sruthy Vineed Nedungadi | 2022 | Systems Microbiology and Biomanufacturing2022，2，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员