Sɛ́ ade titiriw a ɛwɔ nnɛyi nwura ho nhyehyɛe mu no, plastic a wɔsan de di dwuma bio no kura asɛmpatrɛw adwuma titiriw a ɛne sɛ wɔbɛdan plastic a wɔde gu nwura mu ayɛ no nneɛma a wotumi de di dwuma bio no. Esiane wiase nyinaa haw a ɛrenya nkɔanim a ɛne plastic a ɛde efĩ ba ne nkɔso a ɛtra hɔ daa a wosi so dua kɛse nti, plastic mfiridwuma a wɔde di dwuma bio no renya nkɔso bere nyinaa, na wɔreyɛ nhyehyɛe a wɔde bɛsan ayɛ nneɛma foforo, sɛnea ɛyɛ adwuma yiye, na nneɛma a atwa yɛn ho ahyia ho gyinapɛn ahorow no kɔ so yɛ nea eye sen biara. Saa asɛm yi bɛka ɔkwan a ɛkɔ so, mfiridwuma mu nkɔso, nneɛma a atwa yɛn ho ahyia a ɛbɛbɔ, ne daakye nkɔso a ɛbɛba wɔ plastic a wɔde di dwuma bio no ho asɛm.
Process flow ne nkitahodi atitiriw .
Mpɛn pii no, nea ɛka plastic a wɔde yɛ nneɛma foforo ho ne anammɔn atitiriw te sɛ aduru a wɔde di kan yɛ, nea wɔhyehyɛ, nea wɔde siesie, nea wɔde bubu, ne nea wɔde yɛ nneɛma foforo. Nea edi kan no, wɔde nsa anaa mfiri hyehyɛ plastic a asɛe no mu de yi efĩ a ɛnyɛ{1}}efi a wotumi de yɛ nneɛma foforo te sɛ dade ne ahwehwɛ no fi hɔ. Akyiri yi, wɔde akwan a ɛbɛn-infrared (NIR) spectroscopy anaa density sorting akwan di dwuma de kyekyɛ plastic ahorow ahorow mu pɛpɛɛpɛ (te sɛ PET, HDPE, ne PVC). Ahotew yi ngo ne nea aka fi plastic no so, bere a nea ɛrebubu no bubu plastic no mu ma ɛyɛ pellets a ɛfata ma nea edi hɔ no. Awiei koraa no, ɛdenam melt pelletization so no, wobetumi de plastic a wɔasan de adi dwuma no ayɛ re-akɔyɛ wɔ adeyɛ no mu a wɔbɛyɛ no nneɛma a wɔde kyekyere nneɛma, nhama, anaa mfiridwuma mu nneɛma afoforo.
Mfiridwuma a wɔde yiyi nneɛma mu yiye no yɛ ade titiriw a ɛbɛma wɔasan de nneɛma a wɔde di dwuma bio no ayɛ adwuma yiye. Sɛ nhwɛso no, AI-gyinaso a wɔde hu ade a egyina so no betumi akyerɛ nsonsonoe kɛse a ɛwɔ plastic a wɔadi afra mu, bere a electrostatic sorting fata ma plastic ahorow a wɔtetew mu a nsonsonoe kɛse wɔ conductivity mu. Saa mfiridwuma yi a wɔde di dwuma no ama recycling line automation ne resource utilization atu mpɔn kɛse.
Mfiridwuma mu Nneɛma Foforo ne Nneɛma a Atwa Yɛn Ho Ahyia a Ɛyɛ Paara .
Wɔ nnansa yi mfe mu no, mfiridwuma mu nneɛma foforo a wɔyɛ wɔ plastic a wɔsan de di dwuma mu no de wɔn adwene asi nnuru a wɔde di dwuma bio ne ahoɔden a wɔde di dwuma yiye so titiriw. Bere a atetesɛm mu honam fam nneɛma a wɔsan de di dwuma no betumi adi plastic dodow ho dwuma no, nneɛma a ɛsɛe (sɛ nhwɛso no, molecule nkɔnsɔnkɔnsɔn a ɛpaapae a ɛnam nsu a ɛyɛ hyew pii so na ɛba no na ɛto ano hye). Nanso, nnuru a wɔde di dwuma bio no de depolymerization di dwuma de tew plastic so kɔ monomers anaa nnuru a wɔde yɛ nneɛma so, na ɛma ɛyɛ kɛse-ahotew "bottle-To-Bottle" recycling. Sɛ nhwɛso no, pyrolysis betumi adan plastic a wɔadi afra no ayɛ no pɛtro ngo, bere a solcholysis fata sɛ wɔde tew ho na wɔsan yɛ no foforo-ɛsom bo a ɛsom te sɛ PET.
Nneɛma a atwa yɛn ho ahyia a ɛnyɛ nea atwa yɛn ho ahyia no, nnɛyi nhama a wɔde di dwuma bio no de nsu a wɔde di dwuma wɔ ɔkwan a wɔato mu ne mfiri a wɔde tew mframa a efi mu ba no ho di dwuma de tew nsu fĩ ne mframa a ɛyɛ hu a wɔtow gu no so kɛse. Nhama bi a ɛkɔ anim a wɔde di dwuma bio no nso ka owia anaa nneɛma a nkwa wom ho nhyehyɛe ahorow bom ma ɛtew wɔn mframa bɔne no so bio. Bio nso, modular designs ma recycling lines tumi yɛ nsakrae wɔ ɔkwan a ɛyɛ mmerɛw so ma ɛne mpɔtam hɔfo anaa nnwuma a ɛsono wɔn kɛse no ahiade hyia, na ɛma nkɔso a ɛba wɔ distributed recycling networks mu no yɛ mmerɛw.
Nsɛnnennen ne nea ɛrekɔ so daakye .
Ɛmfa ho sɛ mfiridwuma mu nkɔso kɛse wɔ hɔ no, plastic a wɔde yɛ nneɛma foforo a wɔde di dwuma bio no da so ara hyia nsɛnnennen pii. Nea edi kan no, plastic a ɛba fam-ɛsan de di dwuma (te sɛ sini ne nneɛma a wɔde kyekyere nneɛma a wɔabom ayɛ) no sua, na ɛho hia sɛ wɔde multi-nneɛma a wɔde siesie nneɛma a ɛyɛ adwuma yiye. Nea ɛto so abien no, wiase nyinaa nneɛma a wɔsan de di dwuma ho nhyehyɛe a ɛnkari pɛ no kyerɛ sɛ plastic pii kɔ so yɛ nea wɔde gu fam anaasɛ wɔhyew. Wɔ nhyehyɛe no mu no, nnwuma te sɛ EU plastics nhyehyɛe ne China "zero waste city" pilot nhyehyɛe no rehyɛ nneɛma a wɔsan de di dwuma ho nkuran denam mmara ne sikasɛm mu nkannyan so. Saa bere yi mu no, "Extended Producer Responsibility" (EPR) nhyehyɛe a ɛwɔ adwumakuw no fã no nso rehyɛ nnwumakuw nkuran sɛ wɔmfa wɔn sika nsie wɔ closed-loop recycling systems mu.
Daakye, plastic a wɔde yɛ nneɛma foforo a wɔbɛyɛ no bɛkyerɛ nneɛma atitiriw abiɛsa a ɛrekɔ so: nea edi kan no, nyansa a wɔde bɛyɛ adwuma, nneɛma a wɔde di dwuma wɔ Intanɛt so ne data akɛse a wɔde bedi dwuma de ahwɛ nnwinnade tebea so wɔ bere ankasa mu na wɔama adwumayɛ ho nsɛm ayɛ yiye; Nea ɛto so abien, nkɔso wɔ bio-gyina plastic recycling mfiridwuma, te sɛ efficient enzymatic hydrolysis a biodegradable plastics te sɛ PLA; ne nea ɛtɔ so mmiɛnsa, wiase nyinaa adwumayɛkuo ntam nkitahodiɛ a wɔbɛhyɛ mu den, a nea ɛka ho ne cross-ahyeɛ so plastic a wɔsan de di dwuma gyinapɛn ne standardization a ɛwɔ plastic aguadi a wɔde di dwuma no mu.
Awie
Plastic recycling lines nyɛ node atitiriw nko wɔ resource cycle no mu na mmom ɛyɛ adwinnade titiriw a wɔde ko tia plastic efĩ nso. Ɛnam mfiridwuma mu nnoɔma foforɔ ne nhyehyɛeɛ mu adwumayɛ so no, daakye a wɔbɛsan de ayɛ adwuma no bɛyɛ adwuma yie na ɛnyɛ nneɛma a atwa yɛn ho ahyia, a ɛbɛma mmoa a ɛyɛ den a wɔde bɛkyekyere-carbon circular economy. Nanso, saa botae yi a wobedu ho no hwehwɛ sɛ aban ahorow, nnwumakuw, ne ɔmanfo mmɔdenbɔ a wɔayɛ biako no yɛ ano aduru a ɛbɛkɔ so atra hɔ daa wɔ nneɛma a wɔde ma no nyinaa mu, efi fibea a wɔtew so kosi bere a wɔde ba awiei-a asetra mu nneɛma a wɔsan de di dwuma no.
