BIOMASS PRODUCTION FROM ANIMAL WASTES BY PHOTOSYNTHETIC BACTERIA

1977 ◽  
pp. 455-482 ◽  
Author(s):  
J.C. Ensign
2014 ◽  
Vol 1073-1076 ◽  
pp. 810-816
Author(s):  
Guo Yang Yuan ◽  
Hai Feng Lu ◽  
Shi Wei Huang ◽  
Yuan Hui Zhang ◽  
Bao Ming Li ◽  
...  

Post hydrothermal liquefaction wastewater (PHWW) was generated during biocrude oil production. It contains lots of carbon, nitrogen and phosphorous elements, which can cause environmental pollution and resource waste. Using photosynthetic bacteria (PSB) to treat this kind of wastewater can realize pollutants elimination and resource recovery. In this work, the feasibility of using PSB to treat PHWW was firstly investigated, and the treatment conditions were optimized. Results showed that the PSB can effectively degrade PHWW. The optimal initial COD concentration, inoculum size and light intensity for PSB to treat PHWW were 6000-10000 mg/L, 50 mg/L and 1000-3500 lux, respectively. With the initial COD concentration of 9000 mg/L, inoculum size of 50 mg/L and light intensity of 1000 lux, the COD, NH3-N, TP removal and biomass production reached to 71%, 90%, 47.2% and 773 mg/L, respectively. This showed that using PSB to treat PHWW can be an alternative method for PHWW nutrients recovery and pollutant treatment.


RSC Advances ◽  
2016 ◽  
Vol 6 (12) ◽  
pp. 9554-9562 ◽  
Author(s):  
Xingzu Wang ◽  
Guihua Xu ◽  
Chunli Wan ◽  
Yiwei Ren ◽  
Enling Tian

The volatile fatty acids from kitchen waste were used as substrates of anoxygenic photosynthetic bacteria (APB) in a dark-photo fermentation reactor, and anthraquinone-2-sulfonate (AQS) was firstly applied to boost the biomass yield.


2012 ◽  
Vol 65 (3) ◽  
pp. 504-512 ◽  
Author(s):  
S. Chitapornpan ◽  
C. Chiemchaisri ◽  
W. Chiemchaisri ◽  
R. Honda ◽  
K. Yamamoto

Application of photosynthetic process could be highly efficient and surpass anaerobic treatment in releasing less greenhouse gas and odor while the biomass produced can be utilized. The combination of photosynthetic process with membrane separation is possibly effective for water reclamation and biomass production. In this study, cultivation of mixed culture photosynthetic bacteria from food processing wastewater was investigated in a sequencing batch reactor (SBR) and a membrane bioreactor (MBR) supplied with infrared light. Both photo-bioreactors were operated at a hydraulic retention time (HRT) of 10 days. Higher MLSS concentration achieved in the MBR through complete retention of biomass resulted in a slightly improved performance. When the system was operated with MLSS controlled by occasional sludge withdrawal, total biomass production of MBR and SBR photo-bioreactor was almost equal. However, 64.5% of total biomass production was washed out with the effluent in SBR system. Consequently, the higher biomass could be recovered for utilization in MBR.


2018 ◽  
Vol 9 (2) ◽  
pp. 112-117
Author(s):  
Thi Lien Do ◽  
Thi To Uyen Do ◽  
Thi Nhi Cong Le ◽  
Phuong Ha Hoang ◽  
Thi Ngoc Mai Cung

For the purpose of sulphide removal in aquaculture ponds, three strains (name: TH21, QN71, QN51) were isolated and selected with the highest sulphide removal activity from Thanh Hoa and Quang Ninh coastal zones. These strains have identified and tested in a number of aquaculture ponds in different areas with good water quality results. With the objective of purple non sulfur bacteria biomass production containing 3 selected strains for wide application and suitable price for farmers, in this study, we study on optimum conditions of mixed purple non sulfur bacteria biomass production at pilot scale. The results showed that the sources of substrates were soybean meal (1g/l) and acetate (0.5g/l). These substrates are low cost, easy to find, convenient in large culture. The mixture of photosynthetic bacteria can be cultured in glass tanks, under micro aerobic and natural lighting conditions that produce highly concentrated photosynthetic bacteria and lowest rest media. Nhằm mục tiêu xử lý sulphide trong môi trường nuôi trồng thủy sản, chúng tôi đã phân lập và lựa chọn được ba chủng vi khuẩn tía quang hợp có khả năng loại bỏ sulphide cao nhất ký hiệu TH21, QN71, QN52 từ các vùng ven biển Thanh Hóa và Quảng Ninh. Các chủng này đã được định loại và thử nghiệm tại một số ao nuôi thủy sản ở các vùng khác nhau thu được kết quả tốt về chất lượng nước. Để tạo chế phẩm vi khuẩn tía quang hợp từ 3 chủng lựa chọn được ứng dụng rộng rãi và có giá thành phù hợp cho nông hộ, trong nghiên cứu này, chúng tôi nghiên cứu tối ưu hóa các điều kiện sản xuất sinh khối hỗn hợp 3 chủng vi khuẩn tía quang hợp ở quy mô pilot. Kết quả cho thấy đã tìm kiếm được nguồn cơ chất là bột đậu tương (1g/l) và acetate (0.5g/l) là những chất có giá thành thấp, dễ tìm kiếm, thuận tiện trong nhân nuôi ở quy mô lớn. Hỗn hợp vi khuẩn tía quang hợp có thể nuôi trong các bể kính, ở điều kiện vi hiếu khí, có ánh sáng chiếu tự nhiên có thể sản xuất được chế phẩm vi khuẩn tía quang hợp có mật độ cao, cơ chất còn lại sau sản xuất là ít nhất.


1992 ◽  
Vol 21 (2) ◽  
pp. 91-97 ◽  
Author(s):  
Kenneth J. Seal

Animal wastes represent a vast untapped source of energy and nutrients which can be recycled by the use of bioconversion processes. Biomass production, improved digestibility, reductions in environmental pollution and cheaper feed bills are some of the advantages of utilizing animal wastes. However, economics, technological developments and the individual requirements of farming operations will determine the rate of success of such systems.


Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
LM Papaspyridi ◽  
E Topakas ◽  
N Aligiannis ◽  
P Christakopoulos ◽  
AL Skaltsounis ◽  
...  

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