Bioelectrochemical system electrode stack and electrode stack array

Abstract

The invention provides a bioelectrochemical system electrode stack and an electrode stack array, the electrode stack comprises an electrode stack box body and an electrode plate, the interior of the electrode stack box body is provided with a first accommodating space, a treated reactant is accommodated in the first accommodating space, the treated reactant can be liquid or gas, one or more groups of electrode plates are sequentially arranged in the first accommodating space at intervals and are submerged in the treated reactant, and the polarities of the opposite sides of every two adjacent electrode plates are the same. The electrode stack realizes the industrialization system of the anode and the cathode with many compartments in the bioelectrochemical system, structural support is provided for large-scale application of the bioelectrochemical system, the electrode stack is convenient to mount and dismount, can be flexibly moved and combined to be used for various scenes needing the bioelectrochemical system, and is compact in structure and low in cost.

Description

technical field [0001] The invention relates to the field of bioelectrochemistry, in particular to an electrode stack and an electrode stack array of a bioelectrochemical system. Background technique [0002] Energy shortage and environmental pollution are still thorny problems facing the world today. Only by developing renewable energy and realizing resource utilization of waste and pollution can the sustainable development of society and the environment be promoted. It has been discovered that the bioelectrochemical system (Bioelectrochemical Systems, BES) is a system that degrades waste while recovering biomass energy and other value-added chemical products. The basic principle is to electrically enhance the metabolic process of releasing electrons from the oxidation reaction of the dehydrogenase system of microorganisms and obtaining electrons from the reduction reaction of the reductase system. BES has multiple functions such as energy recovery, resource recovery, and ...

AI Technical Summary

Problems solved by technology

[0009] Regardless of the BES whose main goals are electricity production, hydrogen production, and biological reaction efficiency improvement, they are currently in the laboratory research stage, and engineering applications are limited. cost bioreaction electrode

Most of the papers and patents reported in the early stage are small-scale rod-shaped or sheet-shaped electrodes, which are immersed in the reactor at a certain distance, the distance between the cathode and the anode is long, the proton transfer efficiency is low, and the electrodes are mostly noble metals, and the cost is high.

According to recent reports, graphite fiber brush electrodes, carbon fiber felt electrodes, Pt / Fe electrodes, copper mesh tinned electrodes, palladium nanocarbon powder carbon cloth composite electrodes, etc., which have begun to pay attention, have relative stability, conductivity and biocompatibility. etc., but cannot realize large-scale engineering application

For example, patent document CN203922843U discloses a microbial electrolytic cell device integrating organic sewage treatment and methane production, including a microbial electrolytic cell housing 1, an anode electrode 8 and a cathode electrode 4 are arranged in the microbial electrolytic cell housing 1, The cathode electrode 4 and the anode electrode 8 are respectively connected to the low potential end and the high potential end of the external DC stabilized voltage supply 6 through titanium wire 5 and titanium wire 7, and the lower end side of the microbial electrolytic cell housing 1 is provided with a water inlet pipe 9, and the water inlet pipe 9 is connected to the water distributor 10, the bottom of the microbial electrolytic cell housing 1 is provided with a sludge discharge pipe 11 and a valve 12, the upper side of the microbial electrolytic cell housing 1 is provided with a drain pipe 2, and the top of the microbial electrolytic cell housing 1 is provided with Gas collection tube 3, but the electrode surface area used in this design is small, the space for electrolysis is small, the price is expensive, and the overall structure is not compact, and the structural design is unreasonable

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