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„¹ÉŠ„¨µŠ (Center point)„´ž{‹‹´¥œ´Ê œÇ š´ÊŠ®¤— 3 ž{‹‹´¥Ã—¥‡·—Áž}œ‡nµÁŒ¨¸É¥ œ´Éœ‡º°£µ¡š¸É 3 (a1) —Š‡ªµ¤´¤¡´ œ›r
°Š % removal „´œ· — °Š NZVI ¡ªnµÁoœ„¦µ¢ °Š Corner point ¨³ Center point ¤¸ œªÃœo¤ °Š % removal
š¸É Ą¨oÁ‡¸¥Š„´œÂ¨³Á„º°‹³š´Žo°œ„´œ¡°—¸ ˜nš¸É Corner point Ä®oŸ¨š¸É—¸„ªnµ œ´Éœ‡º° NZVI œ· — A (Synthesis-NZVI)
(a) (b)
£µ¡š¸É 3 „¦µ¢ Main effect (a) ¨³ Interaction effects plot (b) 宦´„µ¦¨µ¥˜´ª °Š 2,4-DCP
Ä®o‡nµ % removal ¼Š„ªnµ NZVI œ·— B (Commercial-NZVI) ž¦³¤µ– 3 ®nŠ £µ¡š¸É 3 (a2) —Š‡ªµ¤´¤¡´œ›r
¦³®ªn µŠ % removal „´ž¦·¤µ– NZVI ¡ªnµš¸É Center point œ´ÊœÅ¤n¤¸Ÿ¨®¦º°¤¸ Ÿ¨œo°¥¤µ„˜n°„µ¦Áž¨¸É¥œÂž¨Š °Š‡nµ
% removal ™o µÁš¸¥„´š¸É Corner point ×¥š¸Éž¦·¤µ– NZVI 8 „¦´ ¤˜n°¨·˜¦—¸š¸É »— ¨³¦¼žš¸É 3 (a3) —Š
‡ªµ¤´ ¤¡´œ›r¦³®ªnµŠ‡nµ % removal „´ ‡nµ pH Á¦·É¤˜oœ °ŠœÊε˜´ª°¥nµŠ ¡ªnµš¸É Center point Ášnµœ´Êœš¸É¤¸Ÿ¨˜n°„µ¦
Áž¨¸É ¥œÂž¨Š °Š‡nµ % removal œ´É œ‡º°‡nµ pH 7 Ä®o‡nµ % removal ¼Š»— Á¤ºÉ°Áš¸ ¥„´ pH š¸É ¼Š ¹Êœ
£µ¡š¸É 3 (b) —Š Interaction effects plot Ž¹ÉŠÂ—Š‡ªµ¤´¤¡´ œ›r°Š‡nµ % removal ¨³ž{‹‹´¥ 2 œ·—š¸É œÄ‹ Á¡ºÉ°
ª·Á‡¦µ³®r Ÿ¨„¦³š °Šž{‹‹´¥¦nª¤¦³®ªnµŠ 2 ž{‹‹´¥ ™oµ®µ„¡· ‹µ¦–µœ·— °Š NZVI ×¥¡·‹µ¦–µ¦nª¤„´ œ„´ž¦·¤µ–
°Š NZVI š¸ÉčoÁ¦nŠ„µ¦¨µ¥˜´ª (£µ¡š¸É 3 (b1)) ‹³¡ªnµ„µ¦Äo ŸŠÁ®¨È„ A Ĝ„µ¦¨µ¥˜´ª‹³Ä®o‡nµ % removal ¼ Š
„ªn µ„µ¦ÄoŸŠÁ®¨È„ B ×¥œ·— °Š NZVI Ťnŗo¤¸Ÿ¨„¦³š¦nª¤„´ ž¦·¤µ– °Š NZVI š¸É¤¸Ÿ¨˜n°‡nµ % removal
´ŠÁ„˜š¸ÉÁoœ A Corner point ¨³®µ„Áž¦¸ ¥Áš¸¥¦³®ªn µŠœ·— °Š NZVI „´‡nµ pH (£µ¡š¸É 3 (b2)) ‹³Á®Èœªn µ‡nµ pH
Á¦·É ¤˜oœ¤¸Ÿ¨„¦³š¦nª¤„´œ· — °Š NZVI ˜n°‡nµ % removal —o ª¥ Ž¹ÉŠŸŠÁ®¨È„ A š¸É pH 7 Ä®o‡nµ % removal š¸É—¸š¸É »—
œ°„‹µ„œ¸Ê Á¤ºÉ°¡·‹µ¦–µ‡ªµ¤´¤¡´œ›r¦³®ªnµŠ‡nµ pH ¨³ž¦·¤µ– NZVI (£µ¡š¸É 3 (b3)) ¡ªnµŸ¨„¦³š¦nª¤¦³®ªnµŠ
‡nµ pH ¨³ž¦·¤µ– NZVI ¤¸Ÿ¨˜n°‡nµ % removal Ánœ„´œ ×¥š¸É pH 7 ¨³ž¦·¤µ– NZVI Ťn¤¸Ÿ¨˜n°‡ªµ¤µ¤µ¦™Äœ
„µ¦Á¦n Š„µ¦¨µ¥˜´ª °Š 2,4-DCP ˜nĜš¸Éœ¸Ê pH š¸É ¼Š ¹Êœ ¡ªnµž¦·¤µ– °Š NZVI š¸É¤¸ž¦·¤µ–¤µ„ ¹Êœ‹³µ¤µ¦™Á¦nŠ
ž’· „·¦·¥µ„µ¦¨µ¥˜´ªÄ®o ¼Š ¹Êœ
(a1) (a2)
(a3)
(b1) (b2)
(b3)