SUGAR-CANE JUICE CLARIFICATION, 



Experiment 5. 

 Filtering materal : From Lompoe, Calif 



nZT i°iS ter n g materiaI USed: U pounds t0 200 §allons of J« ice - 

 7 ,1 If ga ? nS Were filt6red - The t0tal time of Nation was between 

 3 and 4 hours, the pressure never rising above 50 pounds. A firm press cake 

 was formed, completely filling the frames. 



Experiment 6. 

 Filtering material : Infusorial earth from State of Washington 



iZT*L m T ng materIal USGd: U P ° Unds t0 200 - all0Ils of ' J^oe. 



rnouX ga n ,r D l*™ 1 * rapidIy aM Clearly With a P ressure ^ not over 

 40 pounds. On attempting to filter more, the pressure ran up rapidlv The 



STheTop! ™ fimi ' "^ the frameS "^ fiUed ° nly tnree-fouLs of the w 

 An outline of these experiments is given in Tables 1 and 2. 

 Table 1.— Filtration of sugar-cane juice with infusorial earth. 



WHOLE MILL JUICE. 



Experi- , . 

 merit fi1 j + uic e 

 , n _ filtered. 



3 

 5 



8 



9 

 10 



12 



15 



21 



22 



24 



Gallons. 

 1,000 



1,200 



1,000 



1,100 

 1,200 



1,000 



1,100 



1,100 



1,150 



800 



Source of in- 

 fusorial earth. 



Lompoe, Calif. . 



....do 



....do 



--..do... 

 .-..do... 



Amount 

 used 



Pounds. 

 60 



Maxi- 

 mum 

 pressure. 



Time of fil- 

 tration. 



do 



do 



.....do , 



....do 



State of Wash- 

 ington. 



Pounds. 

 60 



60 



50 



50 

 60 



40 



60 



50 



50 



Remarks. 



3 hours, 25 



minutes. 

 2 hours , 



Firm press cake formed; clear fil- 

 trate. 



Very firm press cake formed; clear 

 filtrate. 



Very firm press cake; filtration 

 rapid and smooth. 



Press cake slightly soft at top. 



Very hard press cake; filtration 

 very slow toward the end. 



Filtration rapid; filtrate clear and 

 cake firm. 



Good filtration in all respects. 



Press cake very firm; filtrate clear. 



Filtration satisfactory in all re- 

 , spects. 

 mgn - I ■ ■ - - - 1 Frames filled two-thirds with hard 



press cake; tops of cloths coated 

 with slimy material. 



3 hours, 14 

 minutes. 



4 hours, 15 

 minutes. 



CRUSHER JUICE. 



1,350 

 1,000 



1,000 



1,065 



500 



Lompoe, Calif. . 

 State of Wash- 

 ington. 

 Lompoe, Calif 



do 



Maryland 



High. 



Firm press cake; clear filtrate. 

 Very firm press cake; clear filtrate. 



Satisfactoryfiltration inallrespects. 



Do. 

 Unsatisfactory. 



Table 2.— Washing of infusorial earth press cake. 



Sucrose 



in washed 



cake. 



Remarks. 



These experiments in washing 

 press cake followed filtration ex- 

 periments of same number as 

 described in Table 1. 



