scholarly journals Optimisation of conditions of phosphorus release from pharmaceutical waste sludge

2019 ◽  
Vol 14 (1) ◽  
pp. 13-23 ◽  
Author(s):  
Ping Zeng ◽  
Juan Li ◽  
Jianguang Cheng ◽  
Yonghui Song ◽  
Jian Wei
Keyword(s):  
Phosphorus Release ◽  
Waste Sludge ◽  
Pharmaceutical Waste

scholarly journals Potential antibiotic-producing fungal strains isolated from pharmaceutical waste sludge

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Sunday Osaizua Omeike ◽  
Sarafadeen Olateju Kareem ◽  
Adebayo Aliyu Lasisi
Keyword(s):  
Geotrichum Candidum ◽  
Fungal Species ◽  
Exchange Chromatography ◽  
Growth Media ◽  
Similar Species ◽  
Active Metabolites ◽  
Isolation And Identification ◽  
Waste Sludge ◽  
Pharmaceutical Waste ◽  
Pharmaceutical Industries

Abstract Background Antibiotic resistance and dearth of novel compounds from natural sources warrants the need to search other environments for potential antibiotic-producing microbial species. The study investigated isolation and identification of antibiotic-producing fungi from pharmaceutical waste sludge. Results Seven hundred and ninety-seven isolates obtained from sludge of seven pharmaceutical industries in Sango Ota, Ogun State using several growth media, with mould isolates highest (696). Isolated species were from genera Aspergillus (28.55%), Penicillium (18.35%), Trichoderma (13.44%), Rhizopus (10.21%) and Geotrichum (4.01%), and Stachybotrys (0.13%). The CFS of strains named Geotrichum candidum OMON-1, Talaromyces pinophilus OKHAIN-12, and Penicillium citrinum PETER-OOA1 had high reproducible bioactivity against Staphylococcus aureus (32 ± 0.12 mm) and Klebsiella pneumoniae (29 ± 0.12 mm) while P. citrinum MASTER-RAA2 had activity against K. pneumoniae only. Active metabolites were successfully extracted using Diaion HP-20 and methanol:iso-propanol:acetone (6:3:1 v/v). Antibacterial-active fractions of fungal extract successfully eluted with 40–60% NaCl on ion-exchange chromatography using a cation column. Conclusions The study successfully screened antibiotic-producing fungal species from pharmaceutical waste storage facilities. Study also showed that similar species from same toxic environment could potentially produce different metabolites.

scholarly journals Application of pharmaceutical waste sludge compost alters the antibiotic resistome in soil under the Chinese cabbage system

2020 ◽  
pp. 125229
Author(s):  
Zufei Xiao ◽  
Yuan Zhang ◽  
Gang Li ◽  
Laura J. Carter ◽  
Hongtao Wang ◽  
...  
Keyword(s):  
Chinese Cabbage ◽  
Sludge Compost ◽  
Waste Sludge ◽  
Pharmaceutical Waste

Soil Variables for Predicting Potential Phosphorus Release in Swedish Noncalcareous Soils

2004 ◽  
Vol 33 (1) ◽  
pp. 99 ◽  
Author(s):  
Katarina Börling ◽  
Erasmus Otabbong ◽  
Elisabetta Barberis
Keyword(s):  
Phosphorus Release ◽  
Soil Variables

Laboratory Prediction of Phosphorus Release from Deciduous Leaves to Urban Runoff

1995 ◽  
Vol 30 (2) ◽  
pp. 243-246 ◽  
Author(s):  
Heather Culbert ◽  
Robert France
Keyword(s):  
Total Phosphorus ◽  
Empirical Equation ◽  
Urban Runoff ◽  
Phosphorus Release ◽  
Total Export ◽  
Forested Watershed ◽  
Distilled Water ◽  
Trembling Aspen ◽  
Urban Catchments

Abstract In urban centres, leaves are customarily gathered and temporarily stored in large roadside piles prior to their transport to disposal sites. To simulate the release of total phosphorus to urban runoff, birch and trembling aspen leaves were leached with distilled water in laboratory flasks. There was no difference in rate of total phosphorus release between oven-dried and non-dried leaves. An empirical equation developed from these data and knowledge of the litterfall rates for southern Canada indicated that leaves yielded from 11 to 45 mg TP m−2 of forested watershed. This amount represents up to 5% of the total export of total phosphorus from urban catchments and has the potential to exacerbate eutrophication of municipal waters if leaf pickup is not promptly enforced.

Slurry Bioremediation of Petrochemical Waste Sludges

1992 ◽  
Vol 25 (3) ◽  
pp. 207-212 ◽  
Author(s):  
F. J. Castaldi ◽  
D. L. Ford
Keyword(s):  
Aqueous Phase ◽  
Petrochemical Production ◽  
Waste Sludge ◽  
Petrochemical Waste ◽  
Test Reactor

Slurry bioremediation testing was conducted on waste sludges from petrochemical production. The study concludes that the apparent mechanism for remediation of the waste involves an initial dissolution of the waste constituents into the aqueous phase followed by actual biodegradation. The test reactor most successful in the solubilization and dispersal of waste constituents and possibly most effective in reducing waste sludge mass during treatment is the reactor with the lowest waste sludge-to-microorganism ratio.

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