The effect of particle shape modification on the segregation reduction of enzyme granules in laundry detergent powder mixtures was investigated,both experimentally and computationally using Deseret Element Method(DEM)...The effect of particle shape modification on the segregation reduction of enzyme granules in laundry detergent powder mixtures was investigated,both experimentally and computationally using Deseret Element Method(DEM).The shape of modified enzyme particles was in such a way that the large and dense enzyme particles were layered by other fine particles in the detergent powder,by means of a process known in the literature as“seeded granulation”.It is found that the homogeneity of modified enzyme particles could be improved significantly comparing to the original spherical enzyme particles in powder mixtures.Overall,the results of this research demonstrated that the segregation-induced properties of the dense/spherical enzyme particles could be lowered by altering their shape,which could enable the enzyme particles to behave almost similar to other ingredients during the pile formation process.展开更多
As one of the promising hydrogen production technologies,the development of water electrolysis systems including recycling of their functional components is actively investigated.However,the focus lies on energy and c...As one of the promising hydrogen production technologies,the development of water electrolysis systems including recycling of their functional components is actively investigated.However,the focus lies on energy and chemical intensive metallurgical operations and less on mechanical separation processes in most studies.Here,an innovative surfactant-based separation process(using CTAB and SDS)is investigated to contribute to developing a selective physical separation process for ultrafine particles used in high temperature water electrolyzers(composed of NiO,LSM,ZrO_(2),and YSZ).Their different surface charge in alkaline solutions influences the adsorption of surfactants on particle surfaces as well as the modification of particulate wettability,which is a key separation feature.Through the observations of changes in surface charge and wetting behavior in the presence of surfactants,a feasibility of liquid-liquid particle separation(LLPS)is evaluated.The performance of LLPS with model particle mixtures shows the potential of selective separation with recovery of NiO in the organic phase,while the rest of the particles remain in the aqueous phase.Perovskite LSM is not considered in this system because it shows a high possibility of being recovered by magnetic separation.The proposed process can be further optimized by increasing the phase separation stages,and further research is needed on the NiO phase,which showed exceptional behavior in the presence of the surfactants.展开更多
基金The authors would like to acknowledge the financial supportfrom AMSCI(The Advance Manufacturing Supply Chain Initiative,UK,grant number 31587,233189)。
文摘The effect of particle shape modification on the segregation reduction of enzyme granules in laundry detergent powder mixtures was investigated,both experimentally and computationally using Deseret Element Method(DEM).The shape of modified enzyme particles was in such a way that the large and dense enzyme particles were layered by other fine particles in the detergent powder,by means of a process known in the literature as“seeded granulation”.It is found that the homogeneity of modified enzyme particles could be improved significantly comparing to the original spherical enzyme particles in powder mixtures.Overall,the results of this research demonstrated that the segregation-induced properties of the dense/spherical enzyme particles could be lowered by altering their shape,which could enable the enzyme particles to behave almost similar to other ingredients during the pile formation process.
基金the German Federal Ministry for Education and Research(BMBF)for funding of the project ReNaRe-Recycling-Nachhaltige Ressourcennutzung(Grant No.:03HY111D,FeinElSep)as part of the technology platform H2Giga.
文摘As one of the promising hydrogen production technologies,the development of water electrolysis systems including recycling of their functional components is actively investigated.However,the focus lies on energy and chemical intensive metallurgical operations and less on mechanical separation processes in most studies.Here,an innovative surfactant-based separation process(using CTAB and SDS)is investigated to contribute to developing a selective physical separation process for ultrafine particles used in high temperature water electrolyzers(composed of NiO,LSM,ZrO_(2),and YSZ).Their different surface charge in alkaline solutions influences the adsorption of surfactants on particle surfaces as well as the modification of particulate wettability,which is a key separation feature.Through the observations of changes in surface charge and wetting behavior in the presence of surfactants,a feasibility of liquid-liquid particle separation(LLPS)is evaluated.The performance of LLPS with model particle mixtures shows the potential of selective separation with recovery of NiO in the organic phase,while the rest of the particles remain in the aqueous phase.Perovskite LSM is not considered in this system because it shows a high possibility of being recovered by magnetic separation.The proposed process can be further optimized by increasing the phase separation stages,and further research is needed on the NiO phase,which showed exceptional behavior in the presence of the surfactants.
