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Melanodins are amino-carbonyl complex, predominantly present in sugarcane molasses based distillery wastewater as major source of colourant. The microbial decolourisation of melanoidin is a challenge due to its binding property with other co-pollutants of distillery waste. Results revealed that the presence of Zn2+ (2.00-20.00 mg/L) in melanoidin solution (1200 mg/L) stimulated the bacterial growth and sucrose-aspartic acid Maillard product (SAA) decolourisation as compared to control, while Fe 3+ and Mn2+ at the same concentration inhibited the process. However, the presence of phenol (100 mg/L) along with Zn2+ , Fe3+ and Mn2+ suppressed the bacterial growth, SAA decolourisation and MnP activity. The shrinkage and reduced number of bacterial cell count at higher concentration of heavy metals in presence of phenol was also observed under scanning electron microscope. 相似文献
54.
Singh Anita Chaudhary Sudesh Dehiya Brijnandan S. 《Environmental science and pollution research international》2021,28(4):3942-3952
Environmental Science and Pollution Research - Heavy metal discharge from anthropogenic sources on open soil surfaces and in natural water bodies poses serious environmental and health concerns. In... 相似文献
55.
Ningombam Linthoingambi Devi Ishwar Chandra Yadav Q. I. Shihua Surendra Singh S. L. Belagali 《Environmental monitoring and assessment》2011,177(1-4):23-33
Pulp and paper mills generate varieties of pollutants depending upon type of the pulping process being used. This paper presents the characteristics of wastewater from South India Paper Mill, Karnataka, India which is using recycled waste paper as a raw material. The raw wastewater consists of 80?C90 mg L???1 suspended solid and 1,010?C1,015 mg L???1 dissolved solid. However, pH varied from 5.5?C6.8. The biochemical oxygen demand and chemical oxygen demand ranged from 200?C210 and 1,120?C1,160 mg L???1, respectively. Aerobic treatment of raw effluent attribute to significant reduction in suspended solid (range between 25 to 30 mg L???1) and total dissolved solid (range between 360 to 390 mg L???1). However, pH, temperature, and electrical conductivity were found superior after treatment. Copper, cadmium, iron, lead, nickel, and zinc were found in less quantity in raw effluent and were almost completely removed after treatment. The dendrogram of the effluent quality parameters clearly indicate that South India Paper Mill does not meet Minimal National Standard set by central Pollution Control Board to discharge in agricultural field. 相似文献
56.
Rakesh Yadav Sadhana Dwivedi Sandeep Kumar Ashok Chaudhury 《Food and environmental virology》2010,2(2):53-63
Food and environmental virology has become a very important and interesting area of research because of food safety and public
health concerns. During the last few decades, increasing foodborne diseases and environmental generated illnesses are considered
to be highly challenging issues. Biosensor technology holds great promise for the healthcare market, and the security sector.
Similar to clinical diagnostic tools, biosensors are being developed for the rapid, reliable, yet inexpensive identification
and enumeration of pathogenic viruses which are adulterating environment, food and feed commodities. In this modern era, bio-and
nano-technologies play a pivotal role in virological diagnostics of food industry, environmental and veterinary samples. This
review covers the recent advances and future prospects of nanotechnology-based bioanalytical microsystems for food and environmental
virology. 相似文献
57.
Jiun-Yee Chee Yifen Tan Mohd-Razip Samian Kumar Sudesh 《Journal of Polymers and the Environment》2010,18(4):584-592
A consortium of microorganisms from oil polluted wastewater sample was cultivated to promote polyhydroxyalkanoate (PHA) accumulation
before subjecting the mixed cultures to sucrose density gradient ultracentrifugation. This resulted in the fractionation of
the bacterial cells according to their physical features such as size, morphology and/or densities. An isolate was identified
as Burkholderia sp. USM (JCM15050), which was capable of converting palm oil products [crude palm kernel oil (CPKO), palm olein (PO), palm
kernel acid oil (PKAO), palm stearin (PS), crude palm oil (CPO), palm acid oil (PAO) and palm fatty acid distillate (PFAD)],
fatty acids and various glycerol by-products into poly(3-hydroxybutyrate) [P(3HB)]. Up to 70 and 60 wt% of P(3HB) could be
obtained when 0.5%(v/v) CPKO and glycerol was fed, respectively. Among the various fatty acids tested, lauric acid followed
by oleic acid and myristic acid gave the best cell growth and PHA accumulation. Compared to Cupriavidus necator H16, the present isolate showed better ability to grow on and produce PHA from various glycerol by-products generated by
the palm oil industry. This study demonstrated for the first time an isolate that has the potential to utilize palm oil and
glycerol derivatives for the biosynthesis of PHA. 相似文献
58.
Anant Yadav Piyush Choudhary Neelam Atri Sebastian Teir Srikanth Mutnuri 《Environmental science and pollution research international》2016,23(22):22284-22291
The objective of the present study was to set up a small-scale pilot reactor at ONGC Hazira, Surat, for capturing CO2 from vent gas. The studies were carried out for CO2 capture by either using microalgae Chlorella sp. or a consortium of microalgae (Scenedesmus quadricauda, Chlorella vulgaris and Chlorococcum humicola). The biomass harvested was used for anaerobic digestion to produce biogas. The carbonation column was able to decrease the average 34 vol.% of CO2 in vent gas to 15 vol.% of CO2 in the outlet gas of the carbonation column. The yield of Chlorella sp. was found to be 18 g/m2/day. The methane yield was 386 l CH4/kg VSfed of Chlorella sp. whereas 228 l CH4/kg VSfed of the consortium of algae. 相似文献
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60.
Yadav Uprety Ram C. Poudel Hugo Asselin Emmanuel Boon 《Environment, Development and Sustainability》2011,13(3):463-492
A survey of plant biodiversity and ethnobotany was conducted along the Seti river banks in the Tanahun district of Western
Nepal. This area, home of the Magar ethnic group, will be impacted by a major hydropower project, currently under feasibility study. The objective of the study
was to document plant biodiversity and ethnobotany in order to suggest appropriate conservation and management strategies.
Botanical sampling was conducted inside quadrats and along transects. A total of 221 plant species were recorded in the study
area, distributed as herbs (80 species), trees (68), shrubs (28), climbers (19), pteridophytes (18), lianas (5), and epiphytes
(3). Twelve of the inventoried species figure in one or more conservation categories identified by various national or international
agencies. Group discussions and personal interviews allowed to find out that 43% of the species were ethnobotanically important
for the local people and that most were used as medicine, food, or timber. We propose specific species for sustainable use
programs based on certain criteria. The area is very important in terms of plant biodiversity and ethnobotany, and hence,
immediate implementation of conservation measures is recommended to maintain the high social, ecological and economic values
of the area. 相似文献