Over the last decade, the use of ethylenediaminetetraacetic acid (EDTA) has increased by a factor of three within the Swedish pulp industry. The effects of pulp mill wastewater in combination with EDTA on metal mobility and the consequences for ecologically relevant organisms have been studied. Ethylenediaminetetraacetic acid was added to pulp mill effluent water in the laboratory and compared ...

This study investigated the potential of oleaginous yeast Rhodotorula glutinis utilizing pulp and paper wastewater effluents as cultivation media for the sustainable production of microbial lipids as biodiesel feedstock. R. glutinis is oleaginous yeast, which has the ability to produce significant quantities of intercellular lipids in the form of triacylglycerols. Yeast lipids are a promising p...

The production of pulp and paper is associated with the generation of large quantities of wastewater that has to be purified to avoid severe pollution of the environment. Wastewater purification in pulp and paper mills combines sedimentation, biological treatment, chemical precipitation, flotation and anaerobic treatment, and the specific combination of techniques is determined by the local con...

paper mills are characterized as polluting industries, these use pulping process for papermanufacturing, due to which toxic chemicals released into environment. therefore, the biological oxygendemand (bod), chemical oxygen demand (cod) of the emanating stream is high and dissolved oxygen (do) is low. to resolve this predicament, two dominant bacteria bacillus subtilis and micrococcus luteus, an...

Aerobic treatment of bagasse pulp wastewater could be greatly improved by flocculantproducing and lignin-adsorbing bacterial sludges. The fine fibrous particles and lignln contained in the wastewater could be removed by the respective microbial sludge. They could replace the chemicals used for the secondary treatment. Continuous treatment of the wastewater by the sludges was conducted for two w...

Plant peroxidases have strong potential utility for decontamination of phenol-polluted wastewater. However, large-scale use of these enzymes for phenol depollution requires a source of cheap, abundant, and easily accessible peroxidase-containing material. In this study, we show that potato pulp, a waste product of the starch industry, contains large amounts of active peroxidases. We demonstrate...

This study evaluates the performance of horizontal subsurface flow constructed wetland (HSSF-CW) for the removal of chlorinated resin and fatty acids (RFAs) from pulp and paper mill wastewater. The dimensions of the treatment system were 3.5 m x 1.5 m x 0.28 m with surface area of 5.25 m, filled with fine sand and gravel. The cell was planted with an ornamental plant species Canna indica. The r...

research and doctoral studies are carried out within broad problem areas. Research is organised in interdisciplinary research environments and doctoral studies mainly in graduate schools. Jointly, they publish the series Linköping Studies in Arts and Science. This thesis comes from the Department of Thematic Studies – Environmental Change. Abstract The Swedish pulp and paper industry is the thi...

1. Adopt the lowest exposure level recommended by the independent NC Science Advisory Board, Option 1 under 2D .1104, which is 33 micrograms per cubic meter (g/m3) for the 24-hour acceptable ambient level, or AAL; 2. Reject the less stringent AALs proposed under Options 2, 3, 4, and 5 for 2D .1104; 3. Reject the exemptions for wastewater treatment systems at pulp and paper mills proposed under ...

The influence of residual black liquor in pulp on wastewater pollution after the bleaching process was studied. The results show that the CODCr in bleaching effluent has a remarkable linearity with bleaching loss of pulps without residual black liquor. For pulps with some residual black liquor, more than 34% of the overall CODCr is produced by the residual black liquor. It follows that more eff...