Biochar Imachotsa Cyanide mu Miyezo ya Mgodi wa Golide

Cyanide ndi imodzi mwa mankhwala oopsa kwambiri omwe amagwiritsidwa ntchito kwambiri ndi makampani opanga mchere padziko lonse lapansi popanga cyanidation kuti achotse mchere wamtengo wapatali monga golide ndi siliva. Chifukwa chogwirizana kwambiri ndi golidi ndi siliva, Cyanide akhoza kusankha zitsulo izi ku ores. Cyanide ndi cyanide zovuta m'mitsinje yamadzi onyansa amayendetsedwa mosamalitsa. Zotsalira ndi mitsinje yamadzi otayira yomwe ili ndi cyanide iyenera kuthandizidwa kuti muchepetse kuchuluka kwa cyanide yonse komanso yaulere pansi pa malire omwe aperekedwa.

Kuwonongeka kwachilengedwe kungapangitse cyanide kukhala yopanda poizoni, kutulutsa mpweya woipa ndi nayitrogeni. Zochitika zachilengedwe izi zakhala njira yomwe imagwiritsidwa ntchito kwambiri pantchito yamigodi kuti achepetse cyanide. Komabe, kuchuluka kwa kuwonongeka kwachilengedwe kumadalira kwambiri momwe chilengedwe chimakhalira ndipo sichingatulutse zimbudzi zamtundu womwe ukufunidwa chaka chonse nthawi zonse. Tekinoloje kuphatikizapo mankhwala, biological, electrochemical, ndi photochemical njira zapangidwa kuti achepetse cyanide ndi zovuta zake kuti zikhale ndi malire operekedwa m'madzi onyansa.

Miyezo ya Mgodi wa Golide wa Cyanide

Ngalande ya acidic mumigodi yochokera ku migodi ya golide imakhala ndi zitsulo zolemera komanso cyanide, organic pawiri yomwe imatha kupha. Cyanide imagwiritsidwa ntchito m'njira ziwiri. Choyamba ndi mulu wa leaching, pomwe madzi a cyanide amawathira pamilu ya miyala yophwanyidwa. Izi zimasungunula golidiyo, yemwe kenako amasonkhanitsidwa pa pedi pansipa. Njirayi imabwerezedwa mpaka golidi yense atapezekanso. Njira yachiwiri ndi carbon - in - zamkati, kumene cyanide amapopera mu akasinja leaching wodzazidwa ndi ore ndi kusonkhanitsidwa m'njira yolamulidwa.

Michira imakhalabe ndi poizoni kwambiri. Ngakhale kuti cyanide imawola mofulumira m’madzi a pamwamba, imatha kukhalabe m’madzi apansi panthaka kwa nthawi yaitali. Ngozi za ma tailings a cyanide zapha nsomba zazikulu, kuipitsidwa ndi madzi akumwa, komanso kuwonongeka kwa malo olima.

Biochar for Heavy Metal ndi Cyanide Kuchotsa

Njira yapangidwa pogwiritsa ntchito biochar yotsika mtengo yopangidwa kuchokera ku utuchi, zomwe zimabweretsa zotsatira zomaliza. Biochar ndi makala opangidwa ndi pyrolysis kapena kuwonongeka kwamafuta kwa biomass popanda mpweya. Lili ndi ntchito zambiri, kuyambira pakulimbikitsa chonde cha nthaka ndi zokolola zaulimi mpaka kuchotsedwa kwa mpweya monga njira yochepetsera kusintha kwa nyengo.

Biochar yawonetsedwa kuti imachepetsa kuchuluka kwa ma cyanide ions ndi zitsulo zina zolemera m'madzi otayira. Zinyalala za utuchi, zomwe nthawi zambiri zimatayidwa, zimatha kutulutsa methane, mpweya wowonjezera kutentha, kapena kuyatsa moto. Pogwiritsa ntchito zinyalala zamakampani amatabwa ngati njira yothetsera zinyalala za migodi ya golidi, kupambana kokhazikika - kupambana kumatheka.

Asayansi anayeza biochar ndi madzi otayira okhala ndi cyanide, chromium, chitsulo, zinki, faifi tambala, lead, manganese, ndi mkuwa. PH idasungidwa pamlingo wokhazikika wa 7 powonjezera mpweya woipa. PH yapamwamba idapezeka kuti ichedwetsa mayamwidwe. Zotsatira zake zidawonetsa kuti biochar, monga bio-yamwa madzi m'madzi, inali ndi mayamwidwe apakati pa 73%.

Zing'onozing'ono kukula kwa tinthu ta biochar, kuchuluka kwa zowononga kuchotsedwa. Malo okulirapo amatsogolera ku kuchuluka kwa mayamwidwe. Machulukidwe, omwe amachititsidwa ndi kutsekeka kwa ma pores a biochar panthawi ya mayamwidwe a bio, adafikiridwa patatha maola 14.

Biochar ikupereka yankho lodalirika komanso lokhazikika la chithandizo chamankhwala Zovala zagolide, kuchepetsa mlingo wa cyanide wapoizoni ndi zitsulo zolemera kwambiri, ndikusintha momwe makampani amigodi amawonongera zinyalala zake.