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°°„„µ¦š—¨°Š—oª¥Ãž¦Â„¦¤ Minitab Á¡ºÉ°«¹„¬µ°·š›·¡¨ °Š 3 ˜´ªÂž¦ œ´É œ‡º°œ·— °Š NZVI ‡nµ pH Á¦·É¤˜oœ
¨³ž¦·¤µ– °Š NZVI Ĝ„µ¦¥n°¥¨µ¥ 2,4-DCP Ä®o¤¸ž¦³·š›·£µ¡¼Šš¸É »—Äœ£µª³š¸ÉÁ®¤µ³¤
°»ž„¦–r¨³ª· ›¸„µ¦
„µ¦°°„„µ¦š—¨°Š—oª¥ª·›¸Â¢‡š°Á¦¸ ¥¨
„µ¦°°„„µ¦š—¨°Š—oª¥ª·›¸ ¢‡š°Á¦¸¥¨Á˜È¤¦¼žÂšÎ µŽÊε‹»—„¹ÉŠ„¨µŠ (2k Full factorial experiment
with double center point) ץަ„¦¤ Minitab Áž}œ„µ¦š—¨°Šš¸É ˜o°ŠšÎµ„µ¦„ε®œ—¦³—´ °Šž{‹‹´¥š¸É 2 ¦³—´‡º°
¦³—´˜Éε (low level) ¨³¦³—´ ¼Š (high level) °ŠÂ˜n¨³ž{‹‹´¥ —´ ŠÂ—ŠÄœ˜µ¦µŠš¸É 1 Á¡ºÉ°®µ‹Îµœªœ„µ¦š—¨°Š ´Êœ
˜Éεš¸É ¥°¤¦´Å—o (runs order : R) Á¡ºÉ°®µÁŠºÉ°œÅ š¸ÉÁ®¤µ³¤š¸É »—š¸ÉÄ®o‡nµž¦³· š›·£µ¡¼ Š»—Äœ„µ¦Á¦nŠ„µ¦¨µ¥˜´ª
°Š 2,4-DCP —oª¥ NZVI Ĝš¸Éœ¸Ê µ¤µ¦™‡Îµœª–®µ‹Îµœªœ„µ¦š—¨°Š ´Êœ˜ÉεŗoÁž}œ¤„µ¦—´Šœ¸Ê R = 2k+2q ×¥‡n µ 2k
‡º°‹Î µœªœ„µ¦š—¨°ŠÂ¢‡š°Á¦¸¥¨Á˜È¤¦¼žÎµ®¦´«¹„¬µž{‹‹´¥š¸É 2 ¦³—´ ×¥š¸É‡nµ k ‡º°‹Î µœªœž{‹‹´¥š´ÊŠ®¤—š¸ÉÁ¦µ
˜o°Š„µ¦«¹„¬µ ¨³‡n µ q ‡º°‹Î µœªœž{‹‹´¥š¸ÉÁž}œ‡nµšµŠ˜´ªÁ¨ (Numerical factors)
˜µ¦µŠš¸É 1 —Š‡nµ coded ¨³ uncoded °Šž{‹‹´¥˜nµŠÇ
Factor Coded
low level
Corresponding
uncoded low
values
Coded
high
level
Correponding
uncoded high
values
pH -1 7 +1 9
Fe 0 dosage -1 6 g/l +1 8 g/l
Catalyst -1 A +1 B
®¤µ¥Á®˜»: A = NZVI š¸É ´ŠÁ‡¦µ³®r ¨³ B = NZVI šµŠ„µ¦‡oµ
Ĝ„µ¦š—¨°Šœ¸Ê„ε®œ—Ä®o ¤¸ž{ ‹‹´¥š´ÊŠ·Êœ 3 ž{‹‹´¥ ‡º°œ·— °ŠŸŠÁ®¨È„œµÃœªµÁ¨œšr ‡nµ pH Á¦·É¤˜oœ ¨³
ž¦·¤µ– NZVI Ĝ„µ¦Á¦nŠ„µ¦¨µ¥˜´ª °Š 2,4-DCP ¤¸‡nµÁšnµ„´ 23 = 8 nªœ‡nµ 2 q ¤¸‡nµÁšnµ„´ 22 = 4 ‹³Å—o‹Îµœªœ
„µ¦š—¨°Šš´ÊŠ®¤—Áž}œ R = 23+22 = 12 „µ¦š—¨°Š
„µ¦«¹„¬µ®µ£µª³š¸ÉÁ®¤µ³¤Äœ„µ¦Á¦nŠ„µ¦¨µ¥˜´ª °Š 2,4-DCP —oª¥ NZVI
šÎµ„µ¦š—°„µ¦Á¦nŠ„µ¦¨µ¥˜´ª °Š 2,4-DCP —oª¥ NZVI ˜µ¤£µª³˜nµŠÇ ˜µ¤¨Îµ—´š¸Éŗo‹µ„„µ¦
°°„„µ¦š—¨°Š—oª¥Ãž¦Â„¦¤ Minitab o µŠ˜oœ ×¥Á˜¦¸¥¤œÊε˜´ª°¥nµŠš¸É¤¸‡ªµ¤Á o¤ oœ °Šµ¦ž¦³„°°·œš¦¸¥r
2,4-DCP Ášnµ„´ 100 mg/l Ĝ ª—š¸É¤¸µžd— ‹µ„œ´ÊœÁ˜·¤ NZVI ¨ŠÅžÄœœÊÎ µ˜´ª°¥n µŠ oµŠ˜oœ ¨oªÁ ¥nµ—oª¥Á‡¦ºÉ°ŠÁ ¥nµ
Ÿ¤µ¦œ·—®¤»œÁž}œÁª¨µ 3 ´É ªÃ¤Š ¨³Á„ȝ˜´ª°¥nµŠœÊε Á¡ºÉ °œÎµÅžª·Á‡¦µ³®r®µÁž°¦rÁŽÈ œ˜r„µ¦Á¦nŠ„µ¦¨µ¥˜´ª °Š
2,4-DCP —oª¥Á‡¦ºÉ °Š HPLC š¸É¤¸‡°¨´¤œr Hypersil C18 ODS 4.0x125 ¤·¨¨·Á¤˜¦ 5 Ť‡¦°œ Ž¹ÉŠÄo Á¤šµœ°¨Â¨³œÊε
Áž}œ Mobile phase ‹µ„ o °¤¼¨œ¸Ê‹³Å—o £µª³š¸É Á®¤µ³¤š¸É »—Äœ„µ¦Á¦nŠ„µ¦¨µ¥˜´ª °Š 2,4-DCP —oª¥ NZVI š¸ÉÄ®o
ž¦³·š›·£µ¡„µ¦¨µ¥˜´ª °Š 2,4-DCP ¼Š»— ×¥‡Îµœª–Ÿn µœÃž¦Â„¦¤ Minitab Ž¹ÉŠ¤¸ž{‹‹´¥ °Šž¦· ¤µ– NZVI