Sammanfattning

Column studies can be employed to query systems that mimic environmentally relevant flow-through processes in natural and built environments. Sampling these systems spatially throughout operation, while maintaining the integrity of aqueous and solid-phase samples for geochemical and microbial analyses, can be challenging particularly when redox conditions within the column differ from ambient conditions. Here we present a pilot-scale column design and sampling protocol that is optimized for long-term spatial and temporal sampling. We utilized this experimental set-up over approximately 2 years to study a biologically active system designed to precipitate zinc-sulfides during sulfate reducing conditions; however, it can be adapted for the study of many flow-through systems where geochemical and/or molecular microbial analyses are desired. Importantly, these columns utilize retrievable solidphase bags in conjunction with anoxic microbial techniques to harvest substrate samples while minimally disrupting column operation.

Nyckelord

Environmental engineering; Geochemistry; Microbiology; Pilot-scale; Anaerobic respiration; Redox; Bioremediation; Bioreactor

Publicerad i

Bio-protocol
2017, Volym: 7, nummer: 1, artikelnummer: e2083
Utgivare: BIO-PROTOCOL

SLU författare

• Almstrand, Robert

  • Institutionen för skoglig mykologi och växtpatologi, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Geokemi
Mikrobiologi


Publikationens identifierare

DOI: https://doi.org/10.21769/BioProtoc.2083

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/105575