​Testing of Bituminous Coal and its Impurity Layers as in situ Ameliorant of Physico-chemical Soil Reclamation Properties of Coal Mine

Abstract

Background: Coal mined reclaimed soil is prone to losing organic carbon content, increased soil acidity, soil structural damage and compact. This degradation of soil properties can be reduced and improved by applying coal and coal impurities as potential ameliorants. This research was aimed at knowing the potential of coal and coal impurity (partings) to improve the physicochemical properties of coal mine reclaimed soil. Methods: The research was conducted using the randomized block design (RBD) with 3 types of treatment and was in a pot experiment. The tried treatments, among others, are 1) Control (K0), 2) Coal ameliorant (C) and 3) Coal impurity (partings) ameliorant (B). Coal and coal impurity (partings) were both tested with 5 doses, which respectively consisted of 5, 10, 15, 20 and 25 tons ha-1. Result: The results showed that the application of bituminous coal ameliorant and coal impurity significantly affected on physicochemical soil reclamation properties of coal mines. Both types of ameliorants had an effect on increasing pH and decreasing Al-dd contents but were only significantly different from the control (K0). Amelioration significantly affected the increase in the C-organic, Humic acid and N total content with doses of the applications bituminous coal C5, while coal impurity doses of C4.

Effect of biochar and Tithonia compost on physical properties of post-coal mining soil

“…After mining, exmining land undergoes a decline in the quality of its physical and chemical properties, affecting its function as a plant-growing medium. Soil structure damage, high bulk density, high soil acidity, and low organic matter content were observed in the five coal-mined reclamation soil profiles studied (Khaidir et al, 2019). The acidity of the surface layer of reclaimed coal mine soil ranges from pH 4.34 to 4.65, with organic content between 0.87% and 1.07% and an average bulk density of 1.5 g cm -3 (Khaidir et al, 2022).…”

“…Soil structure damage, high bulk density, high soil acidity, and low organic matter content were observed in the five coal-mined reclamation soil profiles studied (Khaidir et al, 2019). The acidity of the surface layer of reclaimed coal mine soil ranges from pH 4.34 to 4.65, with organic content between 0.87% and 1.07% and an average bulk density of 1.5 g cm -3 (Khaidir et al, 2022). The structure damage, high consistency, and loss of organic matter in ex-coal mining soil increase without returning the top and subsoil layers to the soil surface.…”

Bioremediation of Ex-Mining Soil with the Biocompost in the Incubation Experiments

“…For developing countries, the approach to the reclamation of exmining land can be made in situ or ex situ, namely, through the use of bioremediation and phytoremediation methods [19][20][21]. Using biocompost amendments enriched with microorganisms is one of the simplest bioremediation methods [22].…”