Cov pob kws yog tsim los ua cov qauv txhawb nqa rau cov noob pob kws thaum lub sijhawm cog pob kws loj hlob. Lawv muaj cov cellulose, hemicellulose, thiab lignin, nrog rau qee cov protein, cov zaub mov, thiab me ntsis rog. Cov khoom no muab cov pob kws nrog cov khoom siv lub cev thiab tshuaj lom neeg tshwj xeeb, ua rau lawv haum rau ntau yam kev siv.

Hauv ntau thaj chaw nyob deb nroog, cov pob kws feem ntau tau siv los ua roj. Lawv lub peev xwm hlawv tas li thiab muab cua sov tau ua rau lawv yog qhov kev xaiv zoo rau kev ua kom sov tsev hauv thaj chaw uas lwm yam khoom siv hluav taws xob tsis tshua muaj lossis kim. Tab sis tam sim no, nrog kev nce qib ntawm thev naus laus zis, peb tab tom nrhiav txoj hauv kev zoo dua los hloov cov pob kws mus ua lub zog, xws li los ntawm kev ua kom cov biomass pelletization kom huv dua thiab yooj yim dua.

Hauv kev lag luam, cov pob kws ua rau muaj kev cuam tshuam loj heev. Lawv siv rau hauv kev tsim cov furfural, uas yog ib qho tshuaj lom neeg tseem ceeb. Furfural tuaj yeem ua tiav ntxiv rau ntau yam khoom xws li yas, resins, thiab cov kuab tshuaj. Tsis tas li ntawd, qhov xwm txheej siab ntawm cov pob kws ua rau lawv zoo heev rau kev siv ua cov adsorbents. Lawv tuaj yeem siv los tshem tawm cov hlau hnyav ntawm cov dej khib nyiab hauv kev lag luam, pab txhawb rau kev tiv thaiv ib puag ncig.