Kraft Lignin Conversion into Energy Carriers under the Action of Electromagnetic Radiation

P Zharova,M V Tsodikov,G I Konstantinov,A V Chistyakov,O V Arapova

doi:10.1155/2019/6480354

Abstract

In this work, it was found that the deposition of iron salts (iron acetate) on kraft lignin at extremely low concentrations of 0.1 wt.% leads to a sharp increase in the absorbing capacity of microwave radiation by kraft lignin at its power of 1 kW and the conversion of kraft lignin to a hydrogen-containing gas with the degree of hydrogen extraction, reaching 90% based on the hydrogen contained in the kraft lignin. It has been established that the deposition of metals (Fe and Ni) on kraft lignin allows one to directionally change the selectivity of the process of its destruction under the influence of microwave radiation, which makes it possible to classify the process as plasmacatalytic. The results obtained make it possible to minimize the amount of catalyst used and propose an efficient way of producing hydrogen from kraft lignin waste.

Highlights

One of the priorities in the field of petrochemistry and energy is the development of efficient approaches for the production of hydrogen and synthesis gas as the most environmentally friendly energy carriers. e processing of hydrocarbons into hydrogen and synthesis gas is among the strategically important industrial production of major energy sources in all developed countries of the world.Kraft lignin is a natural polymer consisting of phenylpropane structures
When exposed to microwave radiation on a mechanical mixture of kraft lignin with a carbon sorbent, the plasma is ignited in the pores of the sorbent, from where thermal energy is transferred to the entire volume of the reactor. e phenomenon of plasma ignition in sorbent pores was investigated earlier [13]
We argue that magnetic properties of formation of core (Fe)-Ni/(kraft lignin) samples are characteristic for the superparamagnetic system of Fe-containing particles

Summary

Introduction

One of the priorities in the field of petrochemistry and energy is the development of efficient approaches for the production of hydrogen and synthesis gas as the most environmentally friendly energy carriers. e processing of hydrocarbons into hydrogen and synthesis gas is among the strategically important industrial production of major energy sources in all developed countries of the world.Kraft lignin is a natural polymer consisting of phenylpropane structures. One of the priorities in the field of petrochemistry and energy is the development of efficient approaches for the production of hydrogen and synthesis gas as the most environmentally friendly energy carriers. E processing of hydrocarbons into hydrogen and synthesis gas is among the strategically important industrial production of major energy sources in all developed countries of the world. Kraft lignin is a natural polymer consisting of phenylpropane structures It is the building material of plant cells and fibers. About 70 million tons of kraft lignin waste, mainly kraft lignin, which is a by-product of pulp production, is generated abroad every year [2, 3]. In the territory of the Russian Federation, more than 95 million tons of kraft lignin has been accumulated as waste at a pulp and paper mill [3]

Methods

Results

Conclusion