"Onye Ọkachamara n'Ịgbanwe Agba na Ịcha Isi" na Ụlọ Ọrụ ShugaⅠ
N'ihe gbasara nri na ihe ọṅụṅụ, ụlọ ọrụ shuga bụ otu n'ime ebe dị mkpa e ji eme ka carbon rụọ ọrụ. N'oge mmepụta nke ụdị shuga dịka shuga okpete, shuga beet, shuga starch, maltose, lactose, molasses, xylose, xylitol, glucose, na mmiri protein hydrolyzed, kabon a na-arụ ọrụ dị mkpa na mwepụ agba na iwepụ isi ọjọọ.
E kewara ụlọ ọrụ shuga n'ime ụlọ ọrụ mmepụta shuga okpete na ụlọ ọrụ mmepụta shuga beet. Mmiri shuga nwere ọtụtụ ihe agba dị iche iche dịka melanoidins, caramel, na ihe ndị mejupụtara iron-polyphenol. Kabọn a na-arụ ọrụ, nke nwere nnukwu oke elu (500 - 1500m²/g) yana ọtụtụ mesopores na micropores, nwere ike igosi ezigbo arụmọrụ adsorption na arụmọrụ dị elu nke decolorization mgbe a na-emeso ngwọta shuga ndị dị otú ahụ.
E nwere ọtụtụ obere oghere n'ime obere oghere carbon a na-arụ ọrụ, oke oghere ahụ dịkwa oke obosara, site na obere oghere ruo ọtụtụ obere oghere. Karịsịa, enwere ọtụtụ obere oghere micropores nwere obere oghere n'etiti ole na ole ruo ọtụtụ iri angstroms. Obere oghere micropores ndị a kwekọrọ na mpaghara elu ụfọdụ, na-eme ka mpaghara elu kpọmkwem nke carbon a na-arụ ọrụ dị egwu. Maka gram 1 nke carbon a na-arụ ọrụ nke ọma, mpaghara elu ya kpọmkwem nwere ike iru ihe dị ka 1000m². N'ihi na ike atọm dị n'elu carbon a na-arụ ọrụ dị n'ọnọdụ na-adịghị mma ma enwere ike valence fọdụrụ, dabere na nnukwu mpaghara elu dị otú ahụ, ike elu ya dị oke mkpa. Ọ bụ kpọmkwem n'ihi mmetụta adsorption ka enwere ike ịkwụghachi ubi ike unsaturated n'elu carbon a na-arụ ọrụ ruo n'ókè ụfọdụ, si otú a na-ebelata ike elu. Ya mere, n'okpuru ọnọdụ okpomọkụ na nrụgide kpọmkwem, elu carbon a na-arụ ọrụ ga-abanye ihe ndị nwere ike ibelata ike elu ya na akpaghị aka. Agbanyeghị, mgbe carbon a na-arụ ọrụ na-amịkọrọ ihe dị iche iche site na ngwọta ahụ, ọnụọgụ nke adsorption adịghị adaba na oke nke ihe ndị a dị na ngwọta ahụ. Carbon a na-arụ ọrụ na-emekarị ka ntinye solute na elu adsorption dịkwuo mma. N'ụzọ dị otu a, ọbụlagodi mgbe ikike adsorption bụ otu, ihe ndị na-abụghị shuga nwere obere ntinye na ngwọta shuga nwere ike ịmịkọrọ site na carbon a na-arụ ọrụ ma e jiri ya tụnyere sucrose nwere nnukwu ntinye. Ihe ndị na-acha agba na sirop na-enwekarị nnukwu olu molekul na nnukwu ibu molekul. Site na adsorption nke carbon a na-arụ ọrụ, ike elu ya na-ebelata ruo n'ókè dị ukwuu, sirop a na-agwọ na carbon a na-arụ ọrụ nwere ike nweta nnukwu mgbanwe agba. Ọ bụ kpọmkwem n'ihi na carbon a na-arụ ọrụ nwere ikike decolorization na nhicha dị mma maka sirop ka ejirila ya mee ihe n'ọtụtụ ebe na ụlọ ọrụ shuga dị elu na mba ofesi.
Mgbe ejiri carbon a na-arụ ọrụ gwọọ mmiri shuga, tinyekwara mmetụta ya dị ukwuu nke ịgbanwe agba, ọ nwekwara ike iwepụ colloids na ihe ndị na-adịghị arụ ọrụ n'elu mmiri shuga. Usoro a ga-eme ka nrụgide elu nke mmiri shuga dịkwuo elu, belata viscosity ya, belata mmepụta ụfụfụ n'oge usoro mwepụ, mee ka ọsọ kristal dịkwuo elu, ma nwee ike ime ka usoro kristal shuga ka mma, na-akwalite nkewa nke molasses na kristal shuga.
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Oge ozi: Eprel-23-2025