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˜µ¦µŠš¸É 3 —Š‡nµ Estimated Effects ¨³‡nµ
Coefficients 宦´‡nµÁž°¦rÁŽÈœ˜r„µ¦¨µ¥˜´ ª °Š
2,4-DCP (coded units)
Term Coefficient P
Constant 12.631 0.001
cat : x1 -8.957 0.001
dosage : x2 0.931 0.359
pH : x3 -2.534 0.061
cat*dosage 0.834 0.405
cat*pH 0.424 0.657
dosage*pH 0.611 0.53
cat*dosage*pH -1.511 0.178
˜µ¦µŠš¸É 4 —Š‡nµ™· ˜· F ¨³‡nµ P-value 宦´
ª·Á‡¦µ³®r ¤„µ¦„µ¦™—™°¥Á·Š¡®»
F P
Main Effects 57.14 0.004
Lack of Fit 0.11 0.769
˜n°¤µšÎµ„µ¦š—° Lack of Fit (LOF) Á¡ºÉ°¡· ¼‹œr ‡ªµ¤Á®¤µ³¤ °Š¤„µ¦„µ¦™—™°¥Á·Š¡®»oµŠ˜oœ ×¥˜´ÊŠ H 0
Áž}œ‡ªµ¤Á®¤µ³¤ °Š¤„µ¦ ‹µ„˜µ¦µŠ‡nµ™·˜· F = 0.11 ¨³ P-value = 0.769 Î µ®¦´ LOF —´Šœ´Êœ¦»žÅ—oªnµÅ¤n
ž’·Á› H0 ‡º°¤„µ¦„µ¦™—™°¥Á·Š¡®»oµŠ˜oœ¤¸ ‡ªµ¤Á®¤µ³¤
£µ¡š¸É 2 „¦µ¢ Cubic effects plot Î µ®¦´„µ¦Îµ´— 2,4-DCP
£µ¡š¸É 2 —Š‡nµÁž°¦rÁŽÈœ˜r„µ¦Îµ´— 2,4-DCP ‹µ„Ÿ¨„µ¦š—¨°ŠÃ—¥‡Î µœª– cubic plots Ž¹ÉŠ‡nµš¸É
—ŠÄœ„¦µ¢Áž}œ‡nµš¸Éŗo ‹µ„ MINITABTM [Box and Hunter, 2005]×¥¡¨È°˜‡nµ˜nµŠÇ š´ÊŠ®¤— 3 ž{‹‹´¥´ŠÁ„˜
ŗo‹µ„„œ ‡nµÁž°¦rÁŽÈœ˜r„µ¦¨µ¥˜´ ª °Šµ¦¡·¬š¸É ¤µ„š¸É »— nŠŸ¨Ä®ož¦³·š›·£µ¡Äœ„µ¦Îµ´— 2,4-DCP š¸É¤µ„
š¸É »——oª¥ ‹µ„„¦µ¢‹³Å—o £µª³š¸ÉÁ®¤µ³¤‡º° ŸŠÁ®¨È„ A (Synthesis-NZVI) š¸É¤»¤ Factorial point (‹»—¸—ε¨nµŠŽoµ¥)
¤¸‡nµÁž°¦rÁŽÈœ˜r„µ¦¨µ¥˜´ ªÁšnµ„´ 26.770 œ´Éœ‡º°š¸É pH 7 ¨³ž¦·¤µ– NZVI = 6 „¦´¤˜n°¨·˜¦ ‹¹Š‹³Å—o‡nµ
ž¦³· š›·£µ¡¼ Š»—Äœ„µ¦Á¦nŠ„µ¦¨µ¥˜´ª °Š 2,4-DCP —´ŠÂ—ŠÄœ£µ¡š¸É 2
‹µ„ Cubic plot o µŠ˜oœµ¤µ¦™œÎµ¤µª·Á‡¦µ³®r‡ªµ¤´¤¡´œ›r°Šž{‹‹´¥˜n µŠ Ç —´ŠÂ—ŠÄœ£µ¡š¸É 3 ŗo ×¥
£µ¡š¸É 3 (a) —Š‡n µÁž°¦rÁŽÈœ˜r„µ¦Îµ´— 2,4-DCP ‹µ„Ÿ¨„µ¦š—¨°ŠÁž¦¸¥Áš¸¥„´ž{‹‹´¥Â˜n¨³ž{‹‹´¥Â¥„„´œÄœ
¦¼žÂ °Š Main effect plot Ž¹É Š‡nµš¸É—ŠÄœ„¦µ¢Áž}œ‡nµš¸Éŗo‹µ„ MINITAB TM [Box and Hunter, 2005] ץ—Š
9
7
8
6 B A
pH
dosage
cat
3.890 21.005
2.230
0.500 16.610
21.050
8.250
2.920 26.770
22.720
Centerpoint
FactorialPoint
Cube Plot (data means) for % removal