{"id":27668,"date":"2020-06-09T17:00:00","date_gmt":"2020-06-09T10:00:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=27668"},"modified":"2021-11-07T20:42:35","modified_gmt":"2021-11-07T13:42:35","slug":"nghien-cuu-trien-vong-cai-thien-kha-nang-xu-ly-nuoc-ngam-o-nhiem","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/nghien-cuu-trien-vong-cai-thien-kha-nang-xu-ly-nuoc-ngam-o-nhiem\/","title":{"rendered":"Nghi\u00ean c\u1ee9u tri\u1ec3n v\u1ecdng c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng x\u1eed l\u00fd n\u01b0\u1edbc ng\u1ea7m \u00f4 nhi\u1ec5m"},"content":{"rendered":"\n

Theo m\u1ed9t nghi\u00ean c\u1ee9u c\u1ee7a tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Oregon, c\u00e1c h\u1ea1t ch\u1ee9a vi khu\u1ea9n v\u00e0 ngu\u1ed3n cung c\u1ea5p th\u1ef1c ph\u1ea9m \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng ch\u1eadm \u0111\u1ec3 nu\u00f4i d\u01b0\u1ee1ng ch\u00fang, c\u00f3 th\u1ec3 l\u00e0m s\u1ea1ch n\u01b0\u1edbc ng\u1ea7m \u00f4 nhi\u1ec5m trong nhi\u1ec1u th\u00e1ng m\u00e0 kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec.<\/em><\/strong>\"\"<\/p>\n\n\n\n

C\u00e1c h\u1ea1t hydrogel c\u00f3 \u0111\u1ed9 qu\u00e1nh c\u1ee7a k\u1eb9o d\u1ebbo v\u00e0 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t v\u1edbi m\u1ed9t th\u00e0nh ph\u1ea7n d\u00f9ng trong th\u1ef1c ph\u1ea9m ch\u1ebf bi\u1ebfn, h\u1ee9a h\u1eb9n s\u1ebd x\u1eed l\u00fd n\u01b0\u1edbc ng\u1ea7m b\u1ecb nhi\u1ec5m c\u00e1c h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1 d\u1ec5 bay h\u01a1i nguy hi\u1ec3m v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn. Nhi\u1ec1u h\u1ee3p ch\u1ea5t \u0111\u01b0\u1ee3c Trung t\u00e2m ki\u1ec3m so\u00e1t v\u00e0 ph\u00f2ng ng\u1eeba d\u1ecbch b\u1ec7nh \u0111\u01b0a v\u00e0o danh s\u00e1ch l\u00e0 c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y ung th\u01b0 \u1edf ng\u01b0\u1eddi. T\u1ea1i nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m \u1edf Hoa K\u1ef3, c\u00e1c h\u00f3a ch\u1ea5t n\u00e0y xu\u1ea5t hi\u1ec7n v\u1edbi n\u1ed3ng \u0111\u1ed9 v\u01b0\u1ee3t xa c\u00e1c ti\u00eau chu\u1ea9n c\u1ee7a bang v\u00e0 li\u00ean bang quy \u0111\u1ecbnh \u0111\u1ed1i v\u1edbi n\u01b0\u1edbc u\u1ed1ng an to\u00e0n.<\/p>\n\n\n\n

Trong s\u1ed1 c\u00e1c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp trong nghi\u00ean c\u1ee9u c\u00f3 1,1,1-trichloroethane, cis-1,2-dichloroethene v\u00e0 1,4-dioxane – ch\u1ea5t t\u1ea9y d\u1ea7u m\u1ee1 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi ng\u00e0nh c\u00f4ng nghi\u1ec7p v\u00e0 qu\u00e2n \u0111\u1ed9i. C\u00e1c h\u00f3a ch\u1ea5t n\u00e0y c\u00f3 th\u1ec3 x\u00e2m nh\u1eadp v\u00e0o n\u01b0\u1edbc ng\u1ea7m th\u00f4ng qua c\u00e1c b\u1ec3 ch\u1ee9a ho\u1eb7c d\u00f2ng ch\u1ea3y ng\u1ea7m b\u1ecb r\u00f2 r\u1ec9 ho\u1eb7c \u0111\u01a1n gi\u1ea3n l\u00e0 b\u1ecb \u0111\u1ed5 tr\u00ean m\u1eb7t \u0111\u1ea5t nh\u01b0 trong qu\u00e1 kh\u1ee9.<\/p>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p m\u1edbi x\u1eed l\u00fd \u00f4 nhi\u1ec5m do tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc K\u1ef9 thu\u1eadt thu\u1ed9c \u0110\u1ea1i h\u1ecdc Oregon v\u00e0 \u0110\u1ea1i h\u1ecdc North Carolina ph\u00e1t tri\u1ec3n, ho\u1ea1t \u0111\u1ed9ng v\u00ec c\u00e1c vi khu\u1ea9n s\u1ea3n sinh lo\u1ea1i enzyme oxy h\u00f3a ch\u1ea5t \u0111\u1ed9c khi c\u00e1c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m n\u01b0\u1edbc ng\u1ea7m khu\u1ebfch t\u00e1n v\u00e0o c\u00e1c h\u1ea1t. K\u1ebft qu\u1ea3 l\u00e0 c\u00e1c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i th\u00e0nh h\u1ee3p ch\u1ea5t v\u00f4 h\u1ea1i.<\/p>\n\n\n\n

“Ch\u00fang t\u00f4i \u0111\u00e3 t\u1ea1o ra m\u1ed9t qu\u00e1 tr\u00ecnh g\u1ecdi l\u00e0 qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i ch\u1ea5t hi\u1ebfu kh\u00ed l\u00e2u d\u00e0i, l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng kh\u00e9p k\u00edn, th\u1ee5 \u0111\u1ed9ng, t\u1ef1 duy tr\u00ec \u0111\u1ec3 x\u1eed l\u00fd n\u01b0\u1edbc ng\u1ea7m<\/em>“, \u00f4ng Lew Semprini, gi\u00e1o s\u01b0 k\u1ef9 thu\u1eadt m\u00f4i tr\u01b0\u1eddng v\u00e0 l\u00e0 nh\u00e0 nghi\u00ean c\u1ee9u ch\u00ednh cho bi\u1ebft. “M\u1ecdi th\u1ee9 x\u1ea3y ra b\u00ean trong c\u00e1c h\u1ea1t<\/em>“.<\/p>\n\n\n\n

C\u00e1c ph\u01b0\u01a1ng th\u1ee9c x\u1eed l\u00fd hi\u1ec7n nay b\u1ed5 sung c\u00e1c ch\u1ea5t t\u0103ng tr\u01b0\u1edfng d\u1ea1ng kh\u00ed nh\u01b0 propan v\u00e0 metan tr\u1ef1c ti\u1ebfp v\u00e0o l\u1edbp d\u01b0\u1edbi b\u1ec1 m\u1eb7t. C\u00e1c ch\u1ea5t n\u1ec1n n\u00e0y nu\u00f4i d\u01b0\u1ee1ng c\u00e1c vi khu\u1ea9n b\u1ea3n \u0111\u1ecba, t\u1eeb \u0111\u00f3 t\u1ea1o ra c\u00e1c enzyme bi\u1ebfn \u0111\u1ed5i c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m th\u00e0nh c\u00e1c s\u1ea3n ph\u1ea9m ph\u1ee5 kh\u00f4ng \u0111\u1ed9c h\u1ea1i. Tuy nhi\u00ean, th\u00f4ng th\u01b0\u1eddng, c\u00e1c ch\u1ea5t t\u0103ng tr\u01b0\u1edfng c\u1ea1nh tranh h\u00f3a h\u1ecdc v\u1edbi c\u00e1c enzyme quan tr\u1ecdng \u0111\u00f3 g\u00e2y \u1ee9c ch\u1ebf \u0111\u00e1ng k\u1ec3 qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i. H\u1ec7 th\u1ed1ng m\u1edbi gi\u00fap lo\u1ea1i b\u1ecf t\u00ecnh tr\u1ea1ng c\u1ea1nh tranh \u0111\u00f3, gi\u1ea3i ph\u00f3ng t\u1ea5t c\u1ea3 c\u00e1c enzyme \u0111\u1ec3 oxy h\u00f3a c\u00e1c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m. Nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean t\u1ea1p ch\u00ed Environmental Science: Processes & Impacts<\/em>.<\/p>\n\n\n\n

Nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 nu\u00f4i c\u1ea5y vi khu\u1ea9n Rhodococcus rhodochular v\u00e0 ch\u1ea5t n\u1ec1n ph\u00e1t tri\u1ec3n ch\u1eadm trong h\u1ea1t hydrogel \u0111\u01b0\u1ee3c t\u1ea1o ra trong ph\u00f2ng th\u00ed nghi\u1ec7m. C\u00e1c h\u1ea1t h\u00ecnh tr\u1ee5, l\u00e0m t\u1eeb k\u1eb9o cao su gellan, th\u00e0nh ph\u1ea7n ph\u1ed5 bi\u1ebfn trong th\u1ef1c ph\u1ea9m ch\u1ebf bi\u1ebfn, d\u00e0i 2 mm.<\/p>\n\n\n\n

Khi n\u01b0\u1edbc ng\u1ea7m ch\u1ea3y qua c\u00e1c h\u1ea1t, c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m khu\u1ebfch t\u00e1n v\u00e0o h\u1ea1t, n\u01a1i ch\u1ea5t n\u1ec1n gi\u1ea3i ph\u00f3ng ch\u1eadm ph\u1ea3n \u1ee9ng v\u1edbi n\u01b0\u1edbc ng\u1ea7m \u0111\u1ec3 t\u1ea1o ra r\u01b0\u1ee3u nu\u00f4i d\u01b0\u1ee1ng vi khu\u1ea9n Rhodococcus. C\u00e1c vi khu\u1ea9n c\u00f3 ch\u1ee9a m\u1ed9t lo\u1ea1i enzyme monooxygenase bi\u1ebfn \u0111\u1ed5i c\u00e1c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m th\u00e0nh c\u00e1c h\u1ee3p ch\u1ea5t v\u00f4 h\u1ea1i, bao g\u1ed3m c\u00e1c ion CO2, n\u01b0\u1edbc v\u00e0 clorua. Sau \u0111\u00f3, n\u01b0\u1edbc tinh khi\u1ebft v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m ph\u1ee5 khu\u1ebfch t\u00e1n ra kh\u1ecfi c\u00e1c h\u1ea1t v\u00e0 tr\u1edf l\u1ea1i kh\u1ed1i n\u01b0\u1edbc ng\u1ea7m.<\/p>\n\n\n\n

Trong c\u00e1c c\u1ed9t th\u1eed nghi\u1ec7m ch\u1ee9a \u0111\u1ea7y h\u1ea1t \u0111\u01b0\u1ee3c cung c\u1ea5p d\u00f2ng n\u01b0\u1edbc \u00f4 nhi\u1ec5m li\u00ean t\u1ee5c, h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng li\u1ec1n m\u1ea1ch trong h\u01a1n 300 ng\u00e0y tr\u00ean ch\u1ea5t n\u1ec1n t\u0103ng tr\u01b0\u1edfng ban \u0111\u1ea7u. K\u1ebft qu\u1ea3 l\u00e0 c\u00e1c h\u1ea1t lo\u1ea1i b\u1ecf h\u01a1n 99% ch\u1ea5t \u00f4 nhi\u1ec5m v\u00e0 n\u1ed3ng \u0111\u1ed9 c\u1ee7a ch\u00fang gi\u1ea3m t\u1eeb v\u00e0i tr\u0103m ph\u1ea7n t\u1ef7 xu\u1ed1ng c\u00f2n d\u01b0\u1edbi 1 ph\u1ea7n t\u1ef7.<\/p>\n\n\n\n

Tu\u1ed5i th\u1ecd c\u1ee7a h\u1ec7 th\u1ed1ng s\u1ebd ph\u1ee5 thu\u1ed9c ch\u1ee7 y\u1ebfu v\u00e0o th\u1eddi gian s\u1ed1ng c\u1ee7a vi khu\u1ea9n, l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a ch\u1ea5t n\u1ec1n t\u0103ng tr\u01b0\u1edfng. Tuy nhi\u00ean, \u0111i\u1ec1u \u0111\u00f3 v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh. GS. Semprini cho r\u1eb1ng \u0111\u00e2y l\u00e0 v\u1ea5n \u0111\u1ec1 c\u1ea7n nghi\u00ean c\u1ee9u trong t\u01b0\u01a1ng lai.<\/p>\n\n\n\n

C\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd \u0111\u1ed3ng trao \u0111\u1ed5i ch\u1ea5t hi\u1ec7n nay \u0111\u00f2i h\u1ecfi ph\u1ea3i b\u1ed5 sung th\u01b0\u1eddng xuy\u00ean c\u00e1c ch\u1ea5t t\u0103ng tr\u01b0\u1edfng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c vi sinh v\u1eadt ch\u00ednh ph\u00e1t tri\u1ec3n m\u1ea1nh v\u00e0 c\u1ea7n theo d\u00f5i t\u1ea1i ch\u1ed7 th\u01b0\u1eddng xuy\u00ean, \u0111i\u1ec1u ch\u1ec9nh sinh h\u00f3a v\u00e0 chi ph\u00ed li\u00ean quan.<\/p>\n\n\n\n

B\u01b0\u1edbc ti\u1ebfp theo l\u00e0 m\u1edf r\u1ed9ng h\u1ec7 th\u1ed1ng v\u00e0 ti\u1ebfn h\u00e0nh c\u00e1c nghi\u00ean c\u1ee9u th\u00ed \u0111i\u1ec3m trong l\u0129nh v\u1ef1c n\u00e0y. GS. Semprini h\u00ecnh dung m\u1ed9t s\u1ed1 kh\u1ea3 n\u0103ng \u1ee9ng d\u1ee5ng h\u1ea1t m\u1edbi x\u1eed l\u00fd \u00f4 nhi\u1ec5m. Th\u1ee9 nh\u1ea5t l\u00e0 tr\u1ed9n h\u1ea1t tr\u1ef1c ti\u1ebfp v\u00e0o v\u1eadt li\u1ec7u d\u01b0\u1edbi b\u1ec1 m\u1eb7t \u00f4 nhi\u1ec5m. Th\u1ee9 hai l\u00e0\u00a0 \u0111\u00e0o r\u00e3nh trong d\u00f2ng ch\u1ea3y c\u1ee7a n\u01b0\u1edbc ng\u1ea7m v\u00e0 \u0111\u1ed5 \u0111\u1ea7y h\u1ea1t xu\u1ed1ng, t\u1ea1o ra m\u1ed9t h\u00e0ng r\u00e0o ph\u1ea3n \u1ee9ng th\u1ea5m. Kh\u1ea3 n\u0103ng th\u1ee9 ba l\u00e0 \u0111\u01b0a c\u00e1c h\u1ea1t v\u00e0o l\u00f2 ph\u1ea3n \u1ee9ng, m\u1ed9t d\u1ea1ng \u0111\u01a1n gi\u1ea3n l\u00e0 t\u00fai l\u1ecdc, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t trong gi\u1ebfng<\/p>\n\n\n\n

N.P.D<\/strong><\/p>\n\n\n\n

theo https:\/\/phys.org\/news\/2020-03-paves-cleanup-contaminated-groundwater.html<\/em><\/p>\n\n\n\n

https:\/\/dantri.com.vn\/khoa-hoc-cong-nghe\/nghien-cuu-trien-vong-cai-thien-kha-nang-xu-ly-nuoc-ngam-o-nhiem-20200402154021723.htm<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Theo m\u1ed9t nghi\u00ean c\u1ee9u c\u1ee7a tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Oregon, c\u00e1c h\u1ea1t ch\u1ee9a vi khu\u1ea9n v\u00e0 ngu\u1ed3n cung c\u1ea5p th\u1ef1c ph\u1ea9m \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng ch\u1eadm \u0111\u1ec3 nu\u00f4i d\u01b0\u1ee1ng ch\u00fang, c\u00f3 th\u1ec3 l\u00e0m s\u1ea1ch n\u01b0\u1edbc ng\u1ea7m \u00f4 nhi\u1ec5m trong nhi\u1ec1u th\u00e1ng m\u00e0 kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec. C\u00e1c h\u1ea1t hydrogel c\u00f3 \u0111\u1ed9 qu\u00e1nh c\u1ee7a k\u1eb9o d\u1ebbo v\u00e0 \u0111\u01b0\u1ee3c […]<\/p>\n","protected":false},"author":25,"featured_media":29640,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-27668","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/27668","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=27668"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/27668\/revisions"}],"predecessor-version":[{"id":29641,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/27668\/revisions\/29641"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/29640"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=27668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=27668"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=27668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}