Biochars are low-cost and sustainable materials for environmental technologies.In this work,we pre-pared three biochars using pomelo peel(P-BC),algae(A-BC),and corncob(C-BC)to recover Cd^(2+)from wastewater via capaci...Biochars are low-cost and sustainable materials for environmental technologies.In this work,we pre-pared three biochars using pomelo peel(P-BC),algae(A-BC),and corncob(C-BC)to recover Cd^(2+)from wastewater via capacitive deionisation(CDI).A-BC possesses the highest amount of mesopores and nitro-gen functionality and attains the highest removal of Cd^(2+)via physical adsorption.For the electro-sorption capacity,C-BC and A-BC perform better capacitive removal of Cd^(2+)than P-BC due to the smaller charge-transfer and mass-transfer resistances.Also,this work investigated the impacts of surface morphology,cell voltage,NaCl,initial pH,and Cd^(2+)concentrations on Cd^(2+)capacitive removal and electrode regen-eration performances.The results indicated that A-BC and C-BC may be prospective materials for Cd^(2+)removal from wastewater by CDI.However,the presence of competing cations at high concentrations may influence the removal of Cd^(2+)at a low level,requiring the modification of A-BC and C-BC in future work.展开更多
This study aims to analyze the differential cross sections(DCSs) of elastic scattering and total reaction cross sections(TRCSs) of the loosely-bound deuteron projectile impinging on 1 p-shell nuclei, such as9 Be,12 C,...This study aims to analyze the differential cross sections(DCSs) of elastic scattering and total reaction cross sections(TRCSs) of the loosely-bound deuteron projectile impinging on 1 p-shell nuclei, such as9 Be,12 C, and16 O, at incident energies ranging between10.6 and 171 MeV using the continuum discretized coupled channel(CDCC) method. By fitting the experimental data for the DCSs and TRCSs, energy-dependent renormalization factors for the real and imaginary parts of the nucleon-nucleus opticalmodel potentials deduced from the studies proposed by Koning and Delaroche(KD02) and by Watson, Singh, and Segel(WSS),are obtained. It is found that with the WSS potential, which was obtained specifically for 1 p-shell nuclei, the CDCC calculations can simultaneously reproduce both the DCSs and the TRCSs. The results show that it is important to choose appropriate optical potentials to describe deuteron-induced reactions.展开更多
基金the National Natural Science Foundation of China(52125002)the Research Program of Chongqing Municipal Education Commission(KJZD-K202101502)the Natural Science Foundation of Jiangxi Province(20224ACB203015)。
基金financially supported by the fellow-ship of the China Postdoctoral Science Foundation(No.2022TQ0088)the National Natural Science Foundation of China(No.52000053)+1 种基金Shenzhen Science and Technology Program(No.GXWD20201230155427003-20200821174135002,RCBS20210706092219047,and KQTD20190929172630447)the Open Project of State Key Laboratory of Urban Water Resources and Environment(No.2021TS28).
文摘Biochars are low-cost and sustainable materials for environmental technologies.In this work,we pre-pared three biochars using pomelo peel(P-BC),algae(A-BC),and corncob(C-BC)to recover Cd^(2+)from wastewater via capacitive deionisation(CDI).A-BC possesses the highest amount of mesopores and nitro-gen functionality and attains the highest removal of Cd^(2+)via physical adsorption.For the electro-sorption capacity,C-BC and A-BC perform better capacitive removal of Cd^(2+)than P-BC due to the smaller charge-transfer and mass-transfer resistances.Also,this work investigated the impacts of surface morphology,cell voltage,NaCl,initial pH,and Cd^(2+)concentrations on Cd^(2+)capacitive removal and electrode regen-eration performances.The results indicated that A-BC and C-BC may be prospective materials for Cd^(2+)removal from wastewater by CDI.However,the presence of competing cations at high concentrations may influence the removal of Cd^(2+)at a low level,requiring the modification of A-BC and C-BC in future work.
基金supported by the National Key R&D Program of China(Grant No.2018YFA0404403)the National Natural Science Foundation of China(Grant Nos.11775004,and 11775036)
文摘This study aims to analyze the differential cross sections(DCSs) of elastic scattering and total reaction cross sections(TRCSs) of the loosely-bound deuteron projectile impinging on 1 p-shell nuclei, such as9 Be,12 C, and16 O, at incident energies ranging between10.6 and 171 MeV using the continuum discretized coupled channel(CDCC) method. By fitting the experimental data for the DCSs and TRCSs, energy-dependent renormalization factors for the real and imaginary parts of the nucleon-nucleus opticalmodel potentials deduced from the studies proposed by Koning and Delaroche(KD02) and by Watson, Singh, and Segel(WSS),are obtained. It is found that with the WSS potential, which was obtained specifically for 1 p-shell nuclei, the CDCC calculations can simultaneously reproduce both the DCSs and the TRCSs. The results show that it is important to choose appropriate optical potentials to describe deuteron-induced reactions.
