Kuenzaniswa neyakarukwa sefa zvinhu, tsono yakaroverwa sefa inonzwa ine zvinotevera zvakanakira:
1. Huru porosity uye yakanaka mhepo permeability, iyo inogona kuvandudza mutoro wemidziyo uye kuderedza kudzvinyirira kurasikirwa uye kushandiswa kwesimba.Tsono-yakabaiwa sefa inonzwa ipfupi faibha sefa jira rine yakadzama kuronga uye yunifomu pore kugovera, uye porosity inogona kusvika kupfuura 70%, inova yakapetwa kaviri yejira rakarukwa resefa.Kushandisa machira akabayiwa netsono semabhegi ekusefa anogona kuderedza saizi yemabhegi uye kuderedza zvakanyanya kushandiswa kwesimba.
2. High guruva kubviswa kushanda zvakanaka uye yakaderera gasi emission concentration.
3. Nzvimbo yacho inopedzwa nekupisa kunopisa, kuimba kana kuvhara, nzvimbo yacho yakadzikama uye yakapfava, haisi nyore kuvhara, kwete nyore kukanganisa, nyore kuchenesa, uye ine hupenyu hurefu hwebasa.Hupenyu hwesevhisi yetsono inonzwika kazhinji ka1 kusvika kashanu kune yejira rakarukwa resefa.
4. Kugadzikana kwemakemikari kwakasimba.Haisi chete inogona kusefa yakajairika tembiricha kana yakanyanya tembiricha gasi, asi zvakare inogona kusefa ine hukasha gasi rine acid uye alkali.