TY - JOUR
T1 - Reduction of P2O5 and F from Phosphogypsum by CaO addition
AU - Juliastuti, Sri Rachmania
AU - Hendrianie, Nuniek
AU - Dian Pawitra, Yumna
AU - Raditya Putra, Irham
N1 - Publisher Copyright:
© The Authors, published by EDP Sciences, 2018.
PY - 2018/3/14
Y1 - 2018/3/14
N2 - Waste of Phosphoric acid industry, which called phosphogypsum consists of 65% gypsum, 25% water and 10% impurities. Phosphogypsum can only be used up to 15% and the rest is thrown away. The objective purpose of this study is to reduce the content of P2O5 and F using best variable CaO and stirring during coagulation process, flocculation and sedimentation. The method of this experiment is conducted by using the ratio of phosphogypsum and variable distilled water 1:1, 1:2 and 1:3, and then put it into a jar test using the variable stirring of 100 and 150 rpm. Then 11, 12 and 13 gram CaO and 50 ml distilled water is added as variables for coagulation - flocculation process. pH is kept at 6 by adding 4% NaOH. Polyalumunium chloride (PAC) 0.1% as much as 1.75 mg/l is added into the mixture and stirred at 30 rpm for 20 minutes. The separation of P2O5 and F, is done by the sedimentation process. These experimental results show that variable 1:2 (w/v), 12 gram CaO and 150 rpm stirring able to reduce fluoride and P2O5 up to 98.5% and 50% from phospogypsum.
AB - Waste of Phosphoric acid industry, which called phosphogypsum consists of 65% gypsum, 25% water and 10% impurities. Phosphogypsum can only be used up to 15% and the rest is thrown away. The objective purpose of this study is to reduce the content of P2O5 and F using best variable CaO and stirring during coagulation process, flocculation and sedimentation. The method of this experiment is conducted by using the ratio of phosphogypsum and variable distilled water 1:1, 1:2 and 1:3, and then put it into a jar test using the variable stirring of 100 and 150 rpm. Then 11, 12 and 13 gram CaO and 50 ml distilled water is added as variables for coagulation - flocculation process. pH is kept at 6 by adding 4% NaOH. Polyalumunium chloride (PAC) 0.1% as much as 1.75 mg/l is added into the mixture and stirred at 30 rpm for 20 minutes. The separation of P2O5 and F, is done by the sedimentation process. These experimental results show that variable 1:2 (w/v), 12 gram CaO and 150 rpm stirring able to reduce fluoride and P2O5 up to 98.5% and 50% from phospogypsum.
UR - http://www.scopus.com/inward/record.url?scp=85044380894&partnerID=8YFLogxK
U2 - 10.1051/matecconf/201815603021
DO - 10.1051/matecconf/201815603021
M3 - Conference article
AN - SCOPUS:85044380894
SN - 2261-236X
VL - 156
JO - MATEC Web of Conferences
JF - MATEC Web of Conferences
M1 - 03021
T2 - 24th Regional Symposium on Chemical Engineering, RSCE 2017
Y2 - 15 November 2017 through 16 November 2017
ER -