Methylene Chloride (MC), umuti ukoreshwa mu buryo butandukanye ukoreshwa cyane mu miti, kole, no mu miterere y’amavuta, uri kugenda uhinduka cyane mu mikoreshereze yawo mu nganda no mu micungire y’amategeko. Iterambere riherutse mu mikorere myiza, amabwiriza y’umutekano ku bidukikije, n’ubushakashatsi ku miti ikoreshwa mu buryo butandukanye burimo guhindura uburyo uyu muti ubonwa kandi ukoreshwa mu miyoboro y’amazi ku isi.
1. Impinduka mu buryo bwo kongera gukoresha ibikoresho bifunganye
Uburyo bushya bwo kugarura no kongera gukoresha dichloromethane mu nganda bwarushijeho gukururwa mu 2023. Ubu buryo bwakozwe n'ishyirahamwe ry'ubushakashatsi ry'i Burayi, bukoresha ikoranabuhanga rigezweho ryo gufata no gusukura umwuka wa MC usohoka mu gihe cyo gusiga irangi. Igeragezwa rya mbere ryerekanye ko igipimo cyo kugarura 92% by'umusaruro, bigabanya cyane ikoreshwa ry'ibikoresho fatizo n'ibyuka bihumanya.
Iri koranabuhanga rihuza igenzura rishingiye ku buhanga bwa siyansi (AI) kugira ngo rirusheho kunoza imikorere y’ibinyabutabire mu gukoresha ibinyabutabire, rigamije kubahiriza imipaka ikomeye yo guhumeka ku kazi. Inganda nka polycarbonate n’isukura ibice by’ikoranabuhanga ziri kugerageza ubu buryo, bujyanye n’intego z’ubukungu bw’umuryango mpuzamahanga w’ibihugu by’ubutabire (ICCA) zo mu 2030.
2. Gushimangira amabwiriza mpuzamahanga ku bijyanye n'ibyuka bihumanya ikirere bya MC
Inzego zishinzwe kugenzura zirimo gukaza isuzuma rya Methylene Chloride bitewe n’ubushobozi bwayo bwo kugabanya ozone (ODP) ndetse n’ingaruka ku buzima bw’abakozi. Muri Nzeri 2023, Ikigo cy’Uburayi gishinzwe imiti (ECHA) cyatanze igitekerezo cyo kuvugurura amabwiriza ya REACH, gitegeka ko hakurikiranwa imyuka ihumanya ikirere mu buryo bufatika ku nyubako zikoresha toni zirenga 50 za MC buri mwaka. Amategeko asaba kandi ko hasuzumwa ikoreshwa ry’ibintu bitari ngombwa bitarenze mu gihembwe cya kabiri cya 2024.
Muri icyo gihe, Ikigo gishinzwe kurengera ibidukikije muri Amerika (EPA) cyatangije isuzuma ry’uko MC ihagaze hakurikijwe Itegeko ryo Kugenzura Ibiyobyabwenge (TSCA), aho ibyavuye mu bushakashatsi by’ibanze bigaragaza ko hari imipaka ikomeye yo gucukura mu kirere mu kazi—bishobora kugabanya ingano y’ibipimo kuva kuri 25 ppm kugeza kuri 10 ppm. Izi ngamba zigamije gukemura impungenge zikomeje kwiyongera ku ngaruka z’igihe kirekire mu bakozi bo mu nganda.
3. Urwego rw'imiti rwemeje ubundi buryo bwo kurengera ibidukikije
Inganda zikora imiti, zikoresha cyane Methylene Chloride mu gukurura no gukuramo imiti, zirimo kwihutisha igeragezwa ry’imiti ikomoka ku binyabuzima. Ubushakashatsi bwakozwe n’urungano bwasohotse mu kinyamakuru *Green Chemistry* (Kanama 2023) bwerekanye ko imiti ikomoka kuri limonene ari yo isimbura MC mu gukora API (ikiyigize gikora mu miti), igera ku musaruro uhwanye nayo hamwe n’uburozi buke bwa 80%.
Nubwo ikoreshwa ry’iyi miti rikomeje kwiyongera bitewe n’ibibazo byo kudahindagurika kw’ikoreshwa ryayo, inyungu zitangwa n’amategeko zishingiye ku itegeko ryo kugabanya ibiciro muri Amerika zitera inkunga inganda z’igerageza zigamije kwagura ubu buryo. Abasesenguzi bateganya ko igabanuka rya 15-20% ry’ikiguzi cya MC gitangwa n’imiti mu 2027 nibikomeza kuba.
4. Iterambere mu ikoranabuhanga ryo kugabanya ibyago bya MC
Ubuhanga bushya bwo kugenzura ibintu burimo kugabanya ibyago bifitanye isano na MC. Itsinda ry’abashakashatsi bo muri Amerika y’Amajyaruguru riherutse gushyira ahagaragara uburyo bwo kuyungurura bushingiye ku duce duto tw’amazi (nanoparticles) buboza MC isigaye mu mazi yanduye ikayikuramo ibintu bitari uburozi nka iyoni za chloride na dioxyde de carbone. Uburyo bwo gufotoka, bukoreshwa n’urumuri rwa UV rudakoresha ingufu nyinshi, bugera ku kigero cya 99.6% by’ubuziranenge kandi burimo gushyirwa mu nganda zitunganya amazi yanduye hakoreshejwe imiti.
Byongeye kandi, ibikoresho byo kwirinda ku giti cy’umuntu byo mu gihe kizaza (PPE) birimo ibikoresho byo guhumeka bya graphene byagaragaje ko 98% by’ingirakamaro mu kuziba umwuka wa MC mu gihe cy’imirimo yo gupima cyane nko gusiga irangi. Ibi bihuye n’amabwiriza ya OSHA avuguruye ashimangira uburyo bwo kugenzura imiterere y’umubiri ku bashinzwe gucunga MC.
5. Impinduka mu Isoko Rishingiye ku Kuramba
Nubwo ifite uruhare rukomeye, Methylene Chloride ihanganye n’igitutu gikabije gituruka ku bipimo by’ishoramari bya ESG (ibidukikije, imibereho myiza, imiyoborere). Ubushakashatsi bwakozwe mu 2023 n’umuhanga mu by’inganda zikora imiti bwagaragaje ko 68% by’inganda zikora imiti zisanzwe ubu zishyira imbere abatanga ibicuruzwa bafite gahunda zemejwe zo kugabanya imyuka ihumanya ikirere ya MC. Iyi nzira irimo gutera udushya mu bikorwa remezo byo kugarura imyuka ihumanya ikirere n’uburyo bwo gukora bio-hybrid.
Ikigaragara ni uko umushinga w’igerageza mu majyepfo y’uburasirazuba bwa Aziya washoboye gukora neza MC hakoreshejwe chlorine ya methane ikoreshwa n’ingufu zishobora kongera gukoreshwa, bigabanyije ikigereranyo cya karuboni mu musaruro ku kigero cya 40%. Nubwo hakiri imbogamizi zo kwaguka, ibikorwa nk'ibi bigaragaza ko urwego rw’ibinyabutabire rushyira imbere urusobe rw’ibinyabuzima bidafite karuboni.
Umwanzuro: Kunoza imikorere n'inshingano
Kubera ko Methylene Chloride ikomeje kuba ingenzi mu bikorwa by'ingenzi, kwibanda ku guhanga udushya mu buryo burambye no kubahiriza amategeko birarushaho kwiyongera. Uburyo bwo guhuza sisitemu zigezweho zo kugarura ibintu, ubundi buryo bwizewe, na politiki zigenda zihinduka bizagena uruhare rwa MC mu gihe kizaza kidakoresha karubone nyinshi. Abafatanyabikorwa mu ruhererekane rw'agaciro bagomba kunyura muri iki cyiciro cy'impinduka—aho imikorere myiza n'imicungire y'ibidukikije bihurira—kugira ngo babone ubuzima bwiza mu gihe kirekire.
Igihe cyo kohereza: Mata-07-2025