Kugadziriswa kwevhu rakasvibiswa nesimbi uchishandisa Organic Amendments

Kabhoni inoshandiswa mukushanda ine zvinhu zvinogadzira kabhoni zvinobva mumarasha. Kabhoni inoshandiswa mukushanda inogadzirwa nekushandisa pyrolysis yezvinhu zvakasikwa zvinobva mumiti. Zvinhu izvi zvinosanganisira marasha, makoko ekokonati nematanda,masaga enzimbe,soya gandauye muchidimbu (Dias et al., 2007; Paraskeva et al., 2008). Pamwero mudiki,ndove yemhukaZvinoshandiswawo pakugadzira kabhoni inoshanda. Kushandiswa kwekabhoni inoshanda kwakajairika kubvisa simbi mumvura yakasviba, asi kushandiswa kwayo mukudzivirira kufamba kwesimbi hakuna kujairika muvhu rakasviba (Gerçel naGerçel, 2007; Lima naMarshall, 2005b). Kabhoni inoshanda kubva muhuku ine manyowa ehuku yaiva nekugona kwakanaka kwekubatanidza simbi (Lima naMarshall, 2005a). Kabhoni inoshanda inowanzo shandiswa pakugadzirisa tsvina muvhu nemvura nekuda kwechimiro chine maburi, nzvimbo yakakura uye kugona kwakanyanya kwe adsorption (Üçer et al., 2006). Kabhoni inoshanda inobvisa simbi (Ni, Cu, Fe, Co, Cr) kubva mumushonga kuburikidza nemvura inonaya sesimbi hydroxide, adsorption pa activated carbon (Lyubchik et al., 2004). AC inoshandiswa kubva muhuku yealmond inobvisa Ni kubva mumvura yakasviba ine uye isina H₂SO₄kurapwa (Hasar, 2003).

Munguva pfupi yapfuura, biochar yave kushandiswa semushonga wekugadzirisa ivhu nekuda kwekubatsira kwayo pamhando dzakasiyana dzeivhu uye makemikari (Beesley et al., 2010). Biochar ine huwandu hwakawanda (kusvika 90%) zvichienderana nechinhu chikuru (Chan naXu, 2009). Kuwedzera biochar kunovandudza kunyudzwa kwecarbon yakanyungudutswa,pH yevhu, inoderedza simbi muma leachates uye inowedzera ma macro nutrients (Novak et al., 2009; Pietikäinen et al., 2000). Kugara kwenguva refu kwe biochar muvhu kunoderedza kupinda kwesimbi kuburikidza nekushandiswa kakawanda kwezvimwe zvigadziriso (Lehmann naJoseph, 2009). Beesley et al. (2010) vakagumisa kuti biochar inoderedza Cd neZn zvinonyungudika mumvura muvhu nekuda kwekuwedzera kwe organic carbon ne pH. Activated carbon yakaderedza huwandu hwesimbi (Ni, Cu, Mn, Zn) mumashizha ezvirimwa zvechibage zvakarimwa muvhu rakasviba zvichienzaniswa nevhu risina kugadziriswa (Sabir et al., 2013). Biochar yakaderedza huwandu hwakawanda hweCd neZn zvinonyungudika muvhu rakasviba (Beesley naMarmiroli, 2011). Vakagumisa kuti sorption inzira yakakosha yekuchengetedza simbi nevhu. Biochar yakaderedza huwandu hweCd neZn kusvika pakudzikira kwakapetwa ka300 ne45 muhuwandu hweleachate, zvichiteerana (Beesley naMarmiroli, 2011).