Photodegradation of lignin from pulp and paper mill effluent using TiO2/PS composite under UV-LED radiation: Optimization, toxicity assessment and reusability study

2019 ◽  
Vol 122 ◽  
pp. 48-57 ◽  
Author(s):  
Mohsen Haghighi ◽  
Farhad Rahmani ◽  
Fatemeh Kariminejad ◽  
Rojiar Akbari Sene
1997 ◽  
Vol 35 (2-3) ◽  
pp. 205-212 ◽  
Author(s):  
H. T. Adisesha ◽  
S. Purwati ◽  
P. R. Panggabean ◽  
S. E. Sarief

Padalarang pulp and paper mill, a soda pulp and paper mill without chemical recovery, located near Bandung, Indonesia, discharges untreated effluent mixed with domestic waste water into surrounding rice fields. For more than 60 years, paddy has been harvested 3 times a year. An in-depth study to characterize the effluent, the soil and the biomass production was conducted to define the evidence. A field study using four experimental plots indicated that soil irrigated with effluent had a higher concentration of potassium, calcium, sodium ions and greater cation exchange capacity than near-by soil. Analysis of well water showed that the effluent had no effect on the ground water. A reduction of suspended solids and BOD occurred in the effluent while flowing through rice fields. The yields of paddy demonstrated significant positive effect of effluent either in dry or in rainy season, while zeolites as soil amendment did not give significant effect to the already high paddy crop yield.


1994 ◽  
Vol 72 (2) ◽  
pp. 247-251 ◽  
Author(s):  
R. A. Khan ◽  
D. E. Barker ◽  
K. Williams-Ryan ◽  
R. G. Hooper

Samples of longhorn sculpin (Myoxocephalus octodecemspinosus) were exposed to sediment contaminated with crude oil or pulp and paper mill effluent for periods up to 13 months in the laboratory. Other samples were collected at sites where crude oil or effluent from a pulp and paper mill are discharged. The intensity of gill infections of Trichodina spp. on exposed fish was significantly higher than on controls 5, 9, and 13 months after exposure. The intensity of the ciliates was also greater on sculpins collected near an oil-receiving terminal than on those sampled 5 km from the polluted site. Field collections of longhorn and shorthorn (Myoxocephalus scorpius) sculpins at and distant from a pulp and paper mill had high and low intensities of the ciliates, respectively. Similarly, the intensity of trichodinid ciliates was also significantly greater in longhorn sculpins exposed to effluent-contaminated sediment than in controls 5 months after exposure. The results suggest that the intensity of gill-inhibiting species such as trichodinids in susceptible fish hosts increases after chronic exposure to crude oil and to pulp and paper mill effluent, and the parasites may serve as indicators of pollution.


2011 ◽  
Vol 13 (3) ◽  
pp. 37-41
Author(s):  
T. Kannadasan ◽  
V. Sivakumar ◽  
C. Basha ◽  
Arun Parwate ◽  
K. Senthilkumar ◽  
...  

COD reduction studies of paper mill effluent using a batch recirculation electrochemical method The conventional method of treating pulp and paper mill effluent involves the biological oxidation by bacterial action of aerobic and anaerobic conditions and aerobic lagooning method, which are less efficiency of removing COD. To overcome the drawbacks of the existing treatment process, in the present work an attempt has been made to study the electro oxidative destruction of the pulp and paper mill effluent using an electrochemical method and the effect of various parameters such as concentration of supporting electrolytes, current densities, flow rates of electrolyte and reservoir volumes of the effluent were conducted. From the experimental results it is observed that the rate of reduction of COD of the effluent increased with an increase in the supporting electrolyte (sodium chloride) concentration, current density where as it decreased with increase in the reservoir volume and the flow rate of electrolyte. The residence time distributions studies have also been conducted to study the behavior of the electrochemical reactor.


2007 ◽  
Vol 7 (15) ◽  
pp. 2164-2167 ◽  
Author(s):  
A.Y. Zahrim ◽  
Melissa L. Gilbert . ◽  
Jidon Janaun .

Water SA ◽  
2006 ◽  
Vol 31 (4) ◽  
Author(s):  
Suren Singh ◽  
Prenaven Reddy ◽  
Visvanathan L Pillay ◽  
Adinarayana Kunamneni

1977 ◽  
Vol 34 (6) ◽  
pp. 879-885 ◽  
Author(s):  
J. R. M. Kelso

Density of pelagic fish in accessible portions of Nipigon Bay was lower offshore, less than 100 fish/10,000 m3, and greater nearshore, less than 1800 fish/10,000 m3. Conditions at Red Rock caused intense aggregation there and caused species dominance to shift to sucker at the mill discharge from yellow perch elsewhere. Plume shape and direction did not alter the localized pattern of distribution. Two typical responses to plume concentrations were found using suckers fitted with ultrasonic transmitters. Fish released in high discharge concentrations (>15% dilution by volume) became disoriented for as much as several hours, then appeared to search for "background" conditions. Fish released in low discharge concentrations (<15%) immediately initiated an avoidance reaction. Although individuals tended to avoid areas of altered water quality, the community aggregated at Red Rock in response to, perhaps, increased production of benthic macroinvertebrates. However, telemetry indicated that residence time was short in the area of altered water quality.


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