scholarly journals Evaluating the effectiveness of using ClO 2 bleaching as substitution of traditional Cl 2 on PCDD/F reduction in a non-wood pulp and paper mill using reeds as raw materials

2018 ◽  
Vol 3 (3) ◽  
pp. 302-308 ◽  
Author(s):  
Lili Yang ◽  
Liping Fang ◽  
Linyan Huang ◽  
Yuyang Zhao ◽  
Guorui Liu
Keyword(s):  
Raw Materials ◽  
Paper Mill ◽  
Wood Pulp ◽  
Pulp And Paper ◽  
Pulp And Paper Mill

scholarly journals Unexpected promotion of PCDD/F formation by enzyme-aided Cl2 bleaching in non-wood pulp and paper mill

Chemosphere ◽  
2017 ◽  
Vol 168 ◽  
pp. 523-528 ◽  
Author(s):  
Liping Fang ◽  
Minghui Zheng ◽  
Guorui Liu ◽  
Yuyang Zhao ◽  
Wenbin Liu ◽  
...  
Keyword(s):  
Paper Mill ◽  
Wood Pulp ◽  
Pulp And Paper ◽  
Pulp And Paper Mill

scholarly journals Toxicity Removal of Pulp and Paper Mill Effluent by Employing Chemicals

2017 ◽  
Vol 6 (2) ◽  
pp. 62
Author(s):  
Pratibha Singh ◽  
Nupoor Srivastava ◽  
R.S Jagadish
Keyword(s):  
Raw Materials ◽  
Paper Mill ◽  
Cellulose Fibers ◽  
Agricultural Residues ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
Recycled Paper ◽  
Paper Mill Effluent ◽  
Cereal Straw ◽  
Nitrogen Phosphorus

<em>Pulp and paper are manufactured from raw materials containing cellulose fibers, generally wood, recycled paper, and agricultural residues. In developing countries, about 60% of cellulose fibers originate from nonwood raw materials such as bagasse (sugar cane fibers), cereal straw, bamboo, reeds, esparto grass, jute, flax, and sisal. Large amount of toxic effluent is released during process of paper production. Pulp and paper mill spent wash (raw effluent) is highly acidic in nature with high BOD, COD, TDS,  TSS, phenol, sulphate, nitrogen, phosphorus, potassium and metals viz. Mn Zn Cu Ni Fe and Na . Effluent was treated with chemicals FeCl3 and KMnO4. pH was found to increase from 7.8 to 8.4 on increasing concentration (1 gl-1 to 5 gl-1) of KMnO4. Similarly colour, COD and BOD were decreasing with increasing concentration of KMnO4. Maximum colour, COD and BOD reduction were recorded 21.25%, 93.79% and 81.48% respectively at 5g l-1 concentration of KMnO4. Decrease in pH was recorded from 3.3 to 2.0 on increasing concentration (1 gl-1 to 5 gl-1) of FeCl3 (Ferric chloride).  Decrease in colour, COD and BOD were also observed with increasing concentration of FeCl3. Maximum colour, COD and BOD reduction were recorded 99.10%, 54.16% and 85.92% respectively at 5g l-1 conc. of FeCl3.</em>

PCDD/Fs profile and risk assessment in water and sediments around a non-wood pulp and paper mill when a chlorine bleaching treatment is applied

2018 ◽  
Vol 129 ◽  
pp. 319-324
Author(s):  
Qingcong Xiao ◽  
Hongchen Wang ◽  
Xiaoqian Song ◽  
Hanzheng Yuan ◽  
Yuanna Zhang
Keyword(s):  
Risk Assessment ◽  
Paper Mill ◽  
Wood Pulp ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
Chlorine Bleaching ◽  
Bleaching Treatment

The Benefits of Biotreatment for Reducing the Effects of Pulp and Paper Mill Effluents on Fish Reproduction in Laboratory Tests

2008 ◽  
Vol 43 (2-3) ◽  
pp. 161-171 ◽  
Author(s):  
Pierre Martel ◽  
Tibor Kovacs ◽  
Virginie Bérubé
Keyword(s):  
Laboratory Tests ◽  
Egg Production ◽  
Pimephales Promelas ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Reproductive Capacity ◽  
Fish Reproduction ◽  
Pulp And Paper Mill ◽  
Paper Mill Effluents ◽  
Gonad Size

Abstract Pulp and paper mill effluents have been reported to cause changes in reproductive indicators of fish in laboratory and field studies. These changes include reduced egg production and gonad size, and altered hormone levels and expression of secondary sex characteristics. We examined the performance of biotreatment plants for their potential in abating effects of pulp and paper mill effluents on fish reproduction under laboratory conditions. A bleached kraft mill effluent (BKME) treated in an aerated lagoon and a thermomechanical pulp mill effluent (TMPE) treated by aerobic sludge in a sequential batch reactor were selected for study. Mature fathead minnows (Pimephales promelas) were exposed to effluents before and after biotreatment under continuous renewal conditions for 21 days. Egg production was monitored daily, while morphometric parameters (length, weight, gonad size), secondary sexual characteristics, and steroid hormone and vitellogenin levels were measured at the end of the effluent exposure. The effluent from both mills before biotreatment impaired the reproductive capacity of minnows (egg production) at concentrations of 10 and 20% vol/vol, but not at 2% vol/vol. Exposure to biotreated effluents from both mills at concentrations of 2, 10, 20, and 40% vol/vol caused no significant differences in overall reproductive capacity of minnows as compared with controls. These results indicate that biotreatment can significantly improve the quality of a BKME and an effluent from a TMP mill with respect to the reproductive capacity of fish as determined in laboratory tests.

Public Evaluation of Fish Tainting from Pulp and Paper Mill Discharges

1992 ◽  
Vol 25 (2) ◽  
pp. 57-64
Author(s):  
C. G. Jardine
Keyword(s):  
Yellow Perch ◽  
Action Plan ◽  
Pulp Mill ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Salmo Gairdneri ◽  
Pulp And Paper Mill ◽  
Advisory Committees ◽  
Public Advisory ◽  
St Lawrence River

As part of the Remedial Action Plan (RAP) programs for the St. Lawrence and Spanish Rivers in Ontario, Canada, tainting evaluations were conducted using members of the Public Advisory Committees (PACs) and the RAP teams. Triangle test sensory evaluations were conducted on caged rainbow trout (Salmo gairdneri) exposed insitu upstream and downstream of the pulp and paper mill diffuser outfalls In the St. Lawrence River only, evaluations were conducted on indigenous yellow perch (Perca flavescens) caught upstream and downstream of the mill discharge . In both locations, the odour of the flesh from the caged trout exposed above the diffuser outfall was not judged significantly different from caged trout exposed downstream of the discharge. However, the indigenous perch caught downstream of the mill in the St. Lawrence River were judged by the panelists to have a significantly more objectionable odour than those caught upstream of the discharge. While the effluent tainting potential appears to have been eliminated in the Spanish River, further studies are required to determine the source and magnitude of tainting concerns in the St. Lawrence River. The sensory test and results reported here provide useful tools for evaluating the tainting potential of pulp mill discharges and for assessing perceived consumer quality of the fish exposed to these effluents.

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