Đăng nhập
 
Tìm kiếm nâng cao
 
Tên bài báo
Tác giả
Năm xuất bản
Tóm tắt
Lĩnh vực
Phân loại
Số tạp chí
 

Bản tin định kỳ
Báo cáo thường niên
Tạp chí khoa học ĐHCT
Tạp chí tiếng anh ĐHCT
Tạp chí trong nước
Tạp chí quốc tế
Kỷ yếu HN trong nước
Kỷ yếu HN quốc tế
Book chapter
Bài báo - Tạp chí
Malik Badshah (2021) Trang: 1-62
Tạp chí: Prime Archives in Biosciences
Liên kết:

The discharge of poorly treated effluents into the surface water such as streams, rivers and lakes had far – reaching impacts on human activities and aquatic life forms. Therefore, it needs to be cleaned to acceptable levels. For polluted water and wastewater treatments, biological methods are often preferred; in which the usage of highly efficient bioflocculants produced by flocculants producing bacteria (FPB) were selected because low cost, harmlessness to human and environment. In order to reduce water pollution in fish ponds and treat wastewater piggery of post-biogas in pig farms in the Mekong Delta, Vietnam, Protein FPB isolates and Polysaccharide FPB isolates were isolated from soil and water samples; identified by 16S rRNA gene sequencing; and then investigated its characteristics and flocculation activities. The good isolates were selected to optimize parameters of flocculation and its applications in treatments of the polluted water of tra-fish ponds and the wastewater piggery of post-biogas in pig farms. Targets of the quality of output wastewater were compared to standards of the Regulation QCVN40 (A standard (mg/L): TSS < 50; COD < 75; BOD5 < 30; TN < 20; Nitrite (NO2 - ) < 0.01; Nitrate (NO3 - ) < 50; TP < 4 and PO4 3- < 6). From the polluted water in tra-fish ponds: From 155 samples of 10 sites in the Mekong Delta, 389 FPB isolates were isolated including 154 Protein FPB isolates and 235 Polysaccharide FPB isolates. Among the FPB isolates, a total of the 20 isolates (10 of Protein FPB isolates and 10 of Polysaccharide FPB isolates) having the highest flocculating efficiency were selected to identify, the results showed 16 strains belonged to genus Bacillus, 2 strains belonged to genus Staphylococcus, 1 strain was genus Arthrobacter and 1 strain was Agrobacterium, respectively. Among the 20 isolates, the polysaccharide FPB Agrobacterium tumefaciens strain STT37PS (optimal growth medium: adding 1% sucrose and 5% glutamic) was selected to treat wastewater of three-month old bronze featherback (ThacLac) fish and ababas (RoDong) fish ponds. The quality of treated wastewater reached the standards of Regulation QCVN40 in a short time (3 days for bio-floc stage, 2 days for Lemna stage). From the wastewater piggery of post-biogas in pig farms: One hundred-nineteen (119) isolates including Protein FPB isolates (53.85 %) and 102 Polysaccharide FPB (46.15 %) isolates were isolated from 147 samples collected from 13 cities and provinces in the Mekong Delta. A total of the 34 isolates (18 of Protein FPB isolates and 16 of Polysaccharide FPB isolates) having the highest flocculating efficiency were chosen to identify. Among of them, all of the 18 Protein FPB isolates belonged to genus Bacillus; the 16 Polysaccharide FPB isolates belonged to genus Bacillus (majority) (10/16), genus Klebsiella (3/16), Ochrobactrum anthropi (2/16) and genus Sphingobacterium (1/16), respestively. Out of the 34 isolates, 2 strains had the highest flocculating activities were Bacillus megaterium LA51P (Protein FPB) and Bacillus aryhadtai KG12S (Polysaccharide FPB). Combination of Bacillus megaterium LA51P and Bacillus aryabhattai KG12S applied in the wastewater treatment (at volume: 1 m3 and 50 m3 ) showed that the criteria of the treated wastewater were lower than the standard A of the Regulation QCVN40.

Các bài báo khác
Số 23a (2012) Trang: 1-10
Tải về
Số 24a (2012) Trang: 1-8
Tải về
Số 22b (2012) Trang: 1-8
Tải về
Số 33 (2014) Trang: 117-124
Tải về
Số 10 (2008) Trang: 14-24
Tác giả: Cao Ngọc Điệp
Tải về
Số 18b (2011) Trang: 18-28
Tải về
Số 37 (2015) Trang: 18-31
Tải về
Số 18b (2011) Trang: 29-35
Tải về
Số 03 (2005) Trang: 40-48
Tác giả: Cao Ngọc Điệp
Tải về
Số 33 (2014) Trang: 46-52
Tải về
Số 15a (2010) Trang: 54-63
Tải về
Số 36 (2015) Trang: 6-13
Tải về
Số 11b (2009) Trang: 60-70
Tác giả: Cao Ngọc Điệp
Số 06 (2006) Trang: 69-76
Tải về
Số 28 (2013) Trang: 86-95
Tải về
Số 07 (2007) Trang: 95-101
Tải về
Dr. Afroz Alam (2021) Trang: 73-84
Tạp chí: Innovations in Microbiology and Biotechnology Vol. 2
9(1) (2017) Trang: 68-78
Tạp chí: International Journal of Innovations in Engineering and Technology (IJIET)
8(2) (2017) Trang: 323-335
Tạp chí: International Journal of Innovations in Engineering and Technology (IJIET)
6 (2016) Trang: 222-241
Tạp chí: World Journal of Pharmacy and Pharmaceutical Sciences
10 (2012) Trang: 353
Tác giả: Cao Ngọc Điệp
Tạp chí: Công nghệ Sinh học
195 (2012) Trang: 20
Tác giả: Cao Ngọc Điệp
Tạp chí: Nông nghiệp & PTNT
197 (2012) Trang: 49
Tác giả: Cao Ngọc Điệp
Tạp chí: Nông nghiệp & PTNT
(2008) Trang:
Tạp chí: Những vấn đề nghiên cứu cơ bản trong KH Sự sống
 


Vietnamese | English






 
 
Vui lòng chờ...