Biodegradation of dimethyl phthalate, diethyl phthalate and di-n-butyl phthalate by Rhodococcus sp. L4 isolated from activated sludge

A Dispersive liquid-liquid microextraction (DLLME) based analytical method was developed and validated using HPLC-PDA and LC-MS/MS for quantitative determination of phthalates (Dimethyl phthalate (DMP), Diethyl phthalate (DEP), Benzyl Butyl Phthalate (BzBP), Dibutylphthalate(DBP), Diethylhexyl phthalate(DEHP), Di-n-octyl phthalate (DOP) in different cosmetic products (After Shave Lotion, Deodorants, Perfume and Liquid Body Lotion). The DLLME based developed and validated analytical method was found specific, sensitive, accurate and precise. The accuracy (% recovery) of the method at a spiking level of 0.1, 0.5 and 1.0 mg L-1 in the different cosmetic product was found in the range of 92-108. The interday and intraday precision (%RSD) of the method was found less than 15. Out of six analyzed phthalates, only four phthalates were detected in different cosmetic products. Dimethyl phthalate (DMP) and Di-n-octyl phthalate (DOP) were detected in aftershave lotion. Diethyl phthalate (DEP) was detected in deodorants. Dibutyl phthalate (DBP) and Diethyl phthalate (DEP) were detected in perfumes. None of the phthalates were detected in liquid body lotion.

Download Full-text

Biodegradation of Endocrine Disrupting Chemicals Benzyl Butyl Phthalate and Dimethyl Phthalate by Bacillus marisflavi RR014

Journal of Applied Microbiology ◽

10.1111/jam.15045 ◽

2021 ◽

Author(s):

Rajanbir Kaur ◽

Arpna Kumari ◽

Gauri Sharma ◽

Drishtant Singh ◽

Rajinder Kaur

Keyword(s):

Endocrine Disrupting Chemicals ◽

Dimethyl Phthalate ◽

Benzyl Butyl Phthalate ◽

Endocrine Disrupting ◽

Butyl Phthalate

Download Full-text

Activated sludge-mediated biodegradation of dimethyl phthalate under fermentative conditions

Journal of Environmental Sciences ◽

10.1016/s1001-0742(08)62187-7 ◽

2008 ◽

Vol 20 (8) ◽

pp. 922-926 ◽

Cited By ~ 11

Author(s):

Donglei WU ◽

Qaisar MAHMOOD ◽

Lili Wu ◽

Ping ZHENG

Keyword(s):

Activated Sludge ◽

Dimethyl Phthalate

Download Full-text

Rejection of Organic Micropollutants by Clean and Fouled Nanofiltration Membranes

Journal of Chemistry ◽

10.1155/2015/934318 ◽

2015 ◽

Vol 2015 ◽

pp. 1-9 ◽

Cited By ~ 1

Author(s):

Lifang Zhu

Keyword(s):

Aromatic Hydrocarbons ◽

Membrane Fouling ◽

Diethyl Phthalate ◽

Phthalic Acid Esters ◽

Organic Micropollutants ◽

Dimethyl Phthalate ◽

Nanofiltration Membranes ◽

Pore Blocking ◽

Polycyclic Aromatic ◽

Acid Esters

The rejection of organic micropollutants, including three polycyclic aromatic hydrocarbons (PAHs) and three phthalic acid esters (PAEs), by clean and fouled nanofiltration membranes was investigated in the present study. The rejection of organic micropollutants by clean NF90 membranes varied from 87.9 to more than 99.9%, while that of NF270 membranes ranged from 32.1 to 92.3%. Clear time-dependence was observed for the rejection of hydrophobic micropollutants, which was attributed to the adsorption of micropollutants on the membrane. Fouling with humic acid had a negligible influence on the rejection of organic micropollutants by NF90 membranes, while considerable effects were observed with NF270 membranes, which are significantly looser than NF90 membranes. The observed enhancement in the rejection of organic micropollutants by fouled NF270 membranes was attributed to pore blocking, which was a dominating fouling mechanism for loose NF membranes. Changes in the ionic strength (from 10 to 20 mM) reduced micropollutant rejection by both fouled NF membranes, especially for the rejection of dimethyl phthalate and diethyl phthalate by NF270 membranes (from 65.8 to 25.0% for dimethyl phthalate and 75.6 to 33.3% for diethyl phthalate).

Download Full-text