Ecological rehabilitation is the most effective sÊËategy to remediate bauxite residue on a large scale. To improve this process, soil genesis is considered a key process to support plant establishment. This book systematically introduces the latest research on bauxite residue characteristics, soil genesis, saline-alkali regulation, aggregate formation, environmental risk, including several case studies of ecological rehabilitation on bauxite residue disposal areas. This book will provide scientific reference for the alumina industry and researchers working on the restoration of large-scale bauxite disposal areas and enhance theoretical research on the disposal of1arge industrial solid waste wor1dwide.
【目录】
Contents
Chapter 1 Characterization and Disposal of Bauxite Residue 1
1.1 Introduction 1
1.2 Generation of Bauxite Residue 3
1.2.1 Bauxite Production and Global Reserves 3
1.2.2 Production Process of Alumina 4
1.2.3 Annual Production and Inventory of Bauxite Residue 6
1.3 Properties of Bauxite Residue 6
1.3.1 Physical Properties 6
1.3.2 Chemical Properties 7
1.3.3 Biological Properties 13
1.4 Management of Bauxite Residue 14
1.4.1 Conventional Disposal of Bauxite Residue 14
1.4.2 Utilization of Bauxite Residue 14
1.5 Alkalinity Transformation of Bauxite Residue 15
1.5.1 Alkaline Solid Transformation 15
1.5.2 Waste Acid Synergy 20
1.5.3 Acid Gas Sequestration 21
1.5.4 Chloride Salt Neutralization 24
1.6 Soil Formation and Revegetation of Bauxite Residue 26
1.6.1 Amelioration of Bauxite Residue 27
1.6.2 Screening of Tolerant Plant Species and Microorganisms 28
1.6.3 Soil Formation in Bauxite Residue 30
References 31
Chapter 2 Novel Predictors of Soil Genesis in Bauxite Residue under Natural Weathering Processes 38
2.1 Natural Evolution of Alkaline Characteristics in Bauxite Residue 38
2.1.1 Transformation of Basic Alkalinity 40
2.1.2 Transformation of Electrical Conductivity 42
2.1.3 Transformation of Exchangeable Cations 43
2.1.4 Transformation of Acid Neutralizing Capacity 45
2.1.5 Environmental Management for Long-Term Disposal 47
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