Igihe kitari gito cyegereje, reba neza uburebure bwa PVC (3)

Ibicuruzwa byoherezwa mu gihembwe cya kane biteganijwe ko bizagabanuka umwaka-ku-mwaka

Imbaraga zoherezwa mu mahanga muri uyu mwaka zigaragaza intege nke z’imbere mu gihugu.Idirishya rya PVC ryohereza ibicuruzwa byakomeje gufungura mu gihembwe cya mbere, ibicuruzwa byoherezwa mu mahanga byari ibya kabiri nyuma yigihe kimwe cyumwaka ushize, hejuru cyane ugereranije n’imyaka yashize.Bitewe n’igiciro kinini cya peteroli ya peteroli mu mahanga, ibicuruzwa byoherezwa mu mahanga byakomeje kwiyongera kuva muri Werurwe kugeza Gicurasi, mu mahanga ibicuruzwa bitari mu gihembwe byagabanutse kuva muri Kamena kugeza muri Nyakanga, hanyuma hamwe n’igabanuka ry’ibiciro byo mu mahanga, ibicuruzwa byoherezwa mu mahanga byagabanutse ndetse n’ibicuruzwa byoherezwa mu mahanga bigabanuka ku buryo bugaragara.Ibicuruzwa byoherejwe na PVC mu Kwakira byari toni 96.600, naho ibicuruzwa byoherezwa mu mahanga bya PVC kuva muri Mutarama kugeza Ukwakira byari toni 1.755.600, byiyongeraho 21.3% umwaka ushize.Mu gihembwe cya gatatu, icyifuzo cya poro ya PVC mu Buhinde no mu majyepfo y’amajyepfo ya Aziya cyaragabanutse cyane ugereranije n’igihembwe cya mbere n'icya kabiri, kandi hamwe n’igabanuka ry’ibiciro fatizo byo mu mahanga, igiciro cy’isahani yo hanze PVC cyakomeje kugabanuka, ndetse n’ibicuruzwa byoherezwa mu gihugu imbere; mu Kwakira n'Ugushyingo ntibyari byiza, bigatuma ibicuruzwa byoherezwa mu gihembwe cya kane byose bizagabanuka.Ku ruhande rumwe, Ubuhinde bwizeye guhunika mbere yuko politiki yo kurwanya ibicuruzwa irangira.Ku rundi ruhande, hari ibiteganijwe mu gihugu kuzamuka kw'ibiciro, bityo byongera kugura.Ariko, irakeneye kureba uburyo burambye bwo kohereza ibicuruzwa hanze, kandi ibicuruzwa byoherezwa mu Kuboza bizagira ingaruka ku bicuruzwa byoherezwa mu mahanga muri Mutarama umwaka utaha.

Iv.Incamake

Igihe gito PVC idakomeye ishingiro ryibanze hamwe na macro ibiteganijwe biracyari mumikino, uruhande rutanga: kariside ya calcium itangira idahindagurika, PVC yo hepfo itangira kwiyongera gato, ishyaka ryo kugura kariside ya calcium ryateye imbere, isoko rya kariside ya calcium nibisabwa cyane.Kugeza ubu, ibarura ry’abakora PVC riri kuruhande rwo hejuru, rifatanije nigihembwe kitarangiye umwaka urangiye, kandi haracyari igitutu cyo kurangiza gutanga.Iherezo ryibiciro: igiciro cya calcium karbide kugirango igumane ituze, kubera inyungu zimwe na zimwe za calcium karbide yunguka yongeye kugurisha umurongo wibiciro, igice kinini cyisoko rya calcium karbide ikora neza muri iki gihe.Ubucukuzi bw'amabuye y'agaciro ya calcium karbide ya PVC yibikorwa byahantu hamwe na calcium karbide yaguze igiciro mugihe igabanuka ryigihombo.Nubwo soda ya caustic ifite inyungu ariko igabanuka rya chlorine yibiciro, chlor-alkali ihuza ibigo bigabanya inyungu.Ibisabwa birangira: ibicuruzwa byamanutse byumushinga utumiza ibintu ntabwo ari byiza, bifatanije nimpamyabumenyi ya PVC yo kwemerera ibiciro ntabwo ari byinshi, ishyaka rito ryo guhunika, kwegera ibiruhuko, ishyaka ryigihe gito ryo kugura amasoko biragoye kunoza.Ibicuruzwa byoherejwe vuba aha byateye imbere gato ariko bikeneye kubona ubudahwema.

Muri rusange, icyifuzo cyo hasi cyangwa buhoro buhoro mugihe cyigihe kitari gito, shingiro rya PVC rikomeje kuba intege nke.Ingaruka ziheruka kumarangamutima ya macro kubicuruzwa biragaragara cyane, Ukuboza nigihe cyo gushyiraho politiki ihamye, PVC yigihe gito iracyateganijwe ko izakomeza muburyo bwibanze no mumikino ya macro, yitondeye kureba iki cyiciro cya PVC hejuru yuburebure bwongeye kugaruka .