Reference

Metal peroxide composition for eliminating and preventing chlorophyceae

Metal peroxide composition for eliminating and preventing chlorophyceae. Cho, In Gi; Jang, Deok Jin; Lee, Hyo Sang; Lee, Ki Sei (S. Korea ). Repub. Korean Kongkae Taeho Kongbo KR 2002030983 A 26 Apr 2002,No pp. given (Korean). (Korea, Republic Of). CODEN: KRXXA7. CLASS: ICM: A01N059-00.Several reagents with their cas registry numbers 14265-44-2 and 14452-57-4 are used here. APPLICATION: KR 2000-61796 20 Oct 2000. DOCUMENT TYPE: Patent CA Section: 61 (Water) A metal peroxide compn. for preventing and eliminating the proliferation of Cyanophyceae by pptn. of essential nutrients of Cyanophyceae as the principal cause of chlorophyceae to metal peroxide is provided which accelerates self-purifn. action of fresh water by increasing the amt. of dissolved oxygen in fresh water as well as eliminating Cyanophyceae. The compn. contains 80 to 95 parts by wt. of alkali metal peroxide as metal peroxide, which metal peroxide is one or more selected from the group consisting of calcium peroxide, magnesium peroxide and sodium peroxide, 5 to 10 parts by wt. of urea peroxide or 5 to 15 parts by wt. of sodium silicate. The compn. is poured into fresh water in an amt. of 100 to 1,000 ppm to eliminate phosphates from fresh water. .

Method for reclaiming brine solutions using an organic chelate

Method for reclaiming brine solutions using an organic chelate. Qu, Qi; Javora, Paul H.; Boles, Joel L.; Berry, Sandra L. (USA ). U.S. Pat. Appl. Publ. US 2005014654 A1 20 Jan 2005,8 pp. 14452-57-4 and 827043-86-7 which are cas registry numbers are also used here. (English). (United States of America). CODEN: USXXCO. CLASS: ICM: E21B043-00. NCL: 507200000. APPLICATION: US 2003-623044 18 Jul 2003. DOCUMENT TYPE: Patent CA Section: 61 (Water) Section cross-reference(s): 51 A method of reclaiming a well completion brine soln. by using an org. chelate that is capable of discriminating between (i) iron and non-zinc heavy metals; and (ii) calcium and zinc. The chelate contains a functional group selected from the group -CO2 H or -PO(OH)R 20 or a salt or ester thereof, -C(O)-, -OE, -SE, -N=H;C(R2 )R3 , EO-N=H;C(R2 )R3 , -N(R 2 )R 3 , and -N(C(O)R 1 )R 2 group optionally substituted with a -COOH or -PO(OH)R20 or a salt or ester thereof, -SE or -OE group, wherein R2 and R3 are independently selected from E or forms, with nitrogen, phosphorous, oxygen or sulfur, a heterocyclic ring; E is R1 or -H; R1 is a C1 -C 30 alkyl or aralkyl group or a deriv. thereof and R20 is -OH or R1 . .