刘通论文被 Water Research 接收
刘通通讯的硝酸盐-钒复合污染地下水分层生物滤池协同修复研究被 Water Research 接收。
刘通论文 Carbon availability dictates the stability of nitrate-vanadium co-remediation in stratified biofilters 被 Water Research 接收。
作者： H Wang, N Chen, C Feng, D Mei, H Gao, T Liu
期刊： Water Research, 2026
Thermodynamic hierarchies constrain the bioremediation of groundwater co-contaminated with nitrate and V(V), because denitrification preferentially consumes electron donors that would otherwise support metal reduction. This study shows that spatial stratification of lignocellulosic residues can transiently alleviate competition between nitrate removal and vanadium reduction, while long-term performance remains governed by carbon availability and reaction kinetics.
Over 330 days of operation, the stratified biofilter showed a biphasic response. During the carbon-sufficient phase, synergistic co-removal increased nitrate and V(V) loading capacities by up to 6.3-fold and 4.0-fold relative to single-substrate controls. During the carbon-limited phase, denitrification persisted while V(V) reduction collapsed. Spatially resolved metagenomics revealed a thermodynamic “metabolic triage”, in which microbial communities maintained denitrification pathways but selectively down-regulated V-reduction modules. The findings highlight the need for dynamic carbon management strategies in sustained metal co-remediation.