Managing Paper and Pulp Industry By-Product Waste Utilizing Sludge as a Bio-Fertilizer
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Department of Environmental Sciences, LCWU, Lahore-Pakistan
Research & Development Packages Ltd. Lahore, Lahore-Pakistan
Department of Chemistry, Karakoram International University, Gilgit-Baltistan, Pakistan
Institute of Chemistry, Shah Abdul Latif University, Khairpur, Sindh, Pakistan
Department of Chemistry, The University of Lahore, Lahore-Pakistan
Arif Nazir   

Department of Chemistry, Department of Chemistry, University of Lahore, Lahore, 1-Km Raiwind Road, Lahore, 54000 Lahore, Pakistan
Submission date: 2017-09-26
Final revision date: 2018-01-03
Acceptance date: 2018-01-18
Online publication date: 2018-08-06
Publication date: 2018-11-20
Pol. J. Environ. Stud. 2019;28(1):83–90
An enormous amount of waste material (sludge) generated from paper and pulp industries is either dumped or incinerated. However, this pulp is an enriched source of macronutrients and can be employed on agricultural land to improve its fertility. The current study was therefore performed to analyze phosphorus (P) and calcium (Ca) by flame photometer, nitrogen (N) by Kjeldahl method, and magnesium (Mg) by back titration from sludge. The application of sludge significantly increases macronutrients in the plants lady finger (Abelmoschus esculentus) and garden mint (Mentha sachalinensis).We applied primary (initial husk treatment) and secondary (after primary treatment) sludge to observe the growth of Abelmoschus esculentus and Mentha sachalinensis. However, primary sludge showed the highest concentration of nutrients, i.e., 96.5% P, 99.6% N, 86% Ca, and 0.008% Mg. The application of paper and pulp waste to the soil indicates that these bio-solids are good for soil fertility, biomass production, and plant growth; however, they are slightly less efficient than synthetic fertilizers. However, the synthetic fertilizers are probable candidates for holding heavy metals, so these bio-solids can be considered a better source for soil fertility.