Biochar Yana Cire Cyanide a cikin Tailings na Zinare

Cyanide yana ɗaya daga cikin sinadarai mafi guba da kamfanonin sarrafa ma'adanai na duniya ke amfani da su wajen sarrafa cyanidation don fitar da ma'adanai masu daraja kamar zinariya da azurfa. Saboda yawan kusancinsa da zinariya da azurfa, Cyanide zai iya cire waɗannan ƙarfe daga ma'adanai. An tsara tsarin Cyanide da cyanide a cikin ruwan shara sosai. Dole ne a kula da ragowar da ruwan shara da ke ɗauke da cyanide don rage yawan cyanide gaba ɗaya da kyauta a ƙasa da iyakokin da aka tsara.

Halayen lalacewar yanayi na iya sa cyanide ba shi da guba, yana samar da mahaɗan Carbon dioxide da nitrogen. Waɗannan halayen halitta sune hanyoyin da aka fi amfani da su a masana'antar haƙar ma'adinai don rage cyanide. Duk da haka, ƙimar lalacewar yanayi ya dogara sosai akan yanayin muhalli kuma bazai samar da najasa mai inganci da ake so a duk shekara ba a kowane hali. An haɓaka fasahohin da suka haɗa da sinadarai, halittu, lantarki, da hanyoyin photochemical don rage cyanide da hadaddunsa zuwa iyakokin da aka tsara a cikin ruwan shara.

Zinariya ta Cyanide Tailings

Magudanar ma'adinan acidic daga ma'adinan zinare ya ƙunshi ƙarfe masu nauyi amma kuma cyanide, wani sinadari na halitta mai yuwuwar illar mutuwa. Ana amfani da Cyanide ta hanyoyi biyu. Na farko shine tsibin tsibi, inda ake fesa maganin cyanide akan tulin dakakken tama. Wannan yana narkar da gwal, wanda aka tattara a kan kushin da ke ƙasa. Ana maimaita tsari har sai an dawo da duk zinaren. Hanya ta biyu ita ce carbon - in - pulp, inda ake fesa cyanide a cikin tankunan leaching cike da tama kuma ana tattara su ta hanyar da ta fi dacewa.

Tailings ya kasance mai guba sosai. Ko da yake cyanide yana rushewa da sauri a cikin ruwan saman, yana iya dawwama a cikin ruwan ƙasa na dogon lokaci. Hadarin wutsiya na Cyanide ya haifar da kashe kifaye masu yawa, gurbatar ruwan sha, da lalata filayen noma.

Biochar don Ƙarfe mai nauyi da Cire Cyanide

An ɓullo da wani tsari ta amfani da ƙarancin farashi mai ƙima da aka yi daga sawdust, yana ba da wasu sakamako na ƙarshe mai inganci. Biochar gawayi ne da ake samar da shi ta hanyar pyrolysis ko rugujewar thermal na biomass a cikin rashin iskar oxygen. Yana da aikace-aikace da yawa, tun daga haɓaka haɓakar ƙasa da yawan amfanin gona zuwa rarrabuwar carbon a matsayin wata hanya mai yuwuwar rage sauyin yanayi.

An nuna Biochar yana rage yawan ion cyanide da sauran karafa masu nauyi a cikin ruwan wutsiya. Sharar gida, wanda yawanci cike da ƙasa, yana da yuwuwar samar da methane, iskar gas mai ƙarfi, ko haifar da gobara. Ta hanyar yin amfani da wannan sharar gida daga masana'antar katako a matsayin mafita ga sharar ma'adinan zinari, ana samun nasara mai dorewa - yanayin nasara.

Masana kimiyya sun gwada biochar da ruwan datti da ke dauke da cyanide, chromium, iron, zinc, nickel, gubar, manganese, da jan karfe. An kiyaye pH a daidaitaccen adadin 7 ta ƙara carbon dioxide. An samo pH mafi girma don rage tsarin sha. Sakamakon ya nuna cewa biochar, a matsayin bio- absorbent a cikin maganin ruwa, yana da matsakaicin yawan sha na 73%.

Karamin girman barbashi na biochar, mafi girman adadin gurɓatattun abubuwan cirewa. Babban yanki mai girma yana kaiwa zuwa mafi girman ƙimar sha. Jikewa, wanda aka danganta da toshewar pores na biochar yayin tsarin shayarwa, an kai shi bayan sa'o'i 14.

Biochar ta gabatar da mafita mai kyau kuma mai dorewa don magance wutsiyoyin ma'adinan zinare , ta yadda za a rage yawan sinadarin cyanide mai guba da ƙarfe masu nauyi, da kuma yiwuwar kawo sauyi ga yadda masana'antar haƙar ma'adinai ke sarrafa shararta.