TY - JOUR
T1 - Study on the coordination conduct and kinetic insights within the oxo-vanadate and organic reductive nitrogen and sulfur functionalities during the reduction coupled adsorption processes
T2 - Implications in practical applications
AU - Ifthikar, Jerosha
AU - Oyekunle, Daniel T.
AU - Jawad, Ali
AU - Wu, Bei Bei
AU - Hongwu, Jiang
AU - Yezi, He
AU - Lie, Yang
AU - Gendy, Eman A.
AU - Wang, Jia
AU - Shahib, Irshad Ibran
AU - Chen, Zhuqi
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/4/15
Y1 - 2023/4/15
N2 - Vanadium(V) is arising wastewater contaminant recently. Although bio-reduction of vanadium(V) is effective, the knowledge of electron transfer pathways and coordination nature by cellular organic functionalities is seriously lacking. Herein, the coordination conduct and kinetic modes for the reduction of V(V) by organic nitrogen and sulfur functionalities in working pHs are comprehensively investigated for the first time. The kinetics follow 3 steps; (1) diffusion of V(V) species, (2) reduction of V(V) to V(IV), and (3) adsorption of existing V species. The diffusion of V(V) is controlled by the protonated =NH2+, −SH2+, −C[dbnd]SH+ functional groups and oxo-vanadate speciation. The reduction of V(V) to V(IV) was efficient by −SH than =NH, −NH−, because of the higher oxidation potential of sulfur and which acted as the sole electron donor in the process. The coordination of V(V)/V(IV) species interacted with oxygen, nitrogen and sulfur atoms via parallel orientation and leads to multi-docking or single-ionic interactions, revealing the previously unrecognized track. Hence, the system tested in four types of wastewaters with different pHs and resulted the comprehensive practical applicability of the system. This study proposes a novel tactic to design an efficient V(V) wastewater treatment system by considering its water parameters.
AB - Vanadium(V) is arising wastewater contaminant recently. Although bio-reduction of vanadium(V) is effective, the knowledge of electron transfer pathways and coordination nature by cellular organic functionalities is seriously lacking. Herein, the coordination conduct and kinetic modes for the reduction of V(V) by organic nitrogen and sulfur functionalities in working pHs are comprehensively investigated for the first time. The kinetics follow 3 steps; (1) diffusion of V(V) species, (2) reduction of V(V) to V(IV), and (3) adsorption of existing V species. The diffusion of V(V) is controlled by the protonated =NH2+, −SH2+, −C[dbnd]SH+ functional groups and oxo-vanadate speciation. The reduction of V(V) to V(IV) was efficient by −SH than =NH, −NH−, because of the higher oxidation potential of sulfur and which acted as the sole electron donor in the process. The coordination of V(V)/V(IV) species interacted with oxygen, nitrogen and sulfur atoms via parallel orientation and leads to multi-docking or single-ionic interactions, revealing the previously unrecognized track. Hence, the system tested in four types of wastewaters with different pHs and resulted the comprehensive practical applicability of the system. This study proposes a novel tactic to design an efficient V(V) wastewater treatment system by considering its water parameters.
KW - Adsorption
KW - Nitrogen
KW - Oxo-vanadate
KW - Reduction
KW - Sulfur
UR - http://www.scopus.com/inward/record.url?scp=85147239449&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2023.130810
DO - 10.1016/j.jhazmat.2023.130810
M3 - Article
C2 - 36732090
AN - SCOPUS:85147239449
SN - 0304-3894
VL - 448
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
M1 - 130810
ER -