Solid Waste Forms Research Articles

Utilization of waste from refined lemongrass for producing mosquito repellent

Because of its geographical location, South Aceh Regency has many natural resources, one of which is fragrant lemongrass. As it is known, citronella is processed and produced into essential oils. In the production process, waste is produced in the form of solid waste and liquid waste. Usually, the waste is left and becomes a problem for the environment around the distillery. The purpose of this study was to make a mosquito repellent by utilizing citronella processing waste. This research is using the experimental method. This experimental method examines the effect of certain treatments on others under certain conditions. Three samples will be tested for combustion. The results of this study from each sample with a variable initial burning time. The first test kills mosquitoes. The durability of mosquito repellent is sample 3 is the best sample for making mosquito repellent from the use of citronella distillation waste seen from the burn test. The conclusion from this study, the waste produced by citronella distillation can be used as a basic ingredient in making mosquito repellent because there are active compounds contained in citronella waste capable of killing mosquitoes.

Investigating the Leaching Rate of TiTe<sub>3</sub>O<sub>8</sub> Towards a Potential Ceramic Solid Waste Form

An important property of glass and ceramic solid waste forms is processability. Tellurite materials with low melting temperatures and high halite solubilities have potential as solid waste forms. Crystalline TiTe3O8 was synthesized through a solid-state reaction between stoichiometric amounts of TiO2 and TeO2 powder. The resultant TiTe3O8 crystal had a three-dimensional (3D) structure consisting of TiO6 octahedra and asymmetric TeO4 seesaw moiety groups. The melting temperature of the TiTe3O8 powder was 820℃, and the constituent TeO2 began to evaporate selectively from TiTe3O8 above around 840℃. The leaching rate, as determined using the modified American Society of Testing and Materials static leach test method, of Ti in the TiTe3O8 crystal was less than the order of 10-4 g·m-2·d-1 at 90℃ for durations of 14 d over a pH range of 2-12. The chemical durability of the TiTe3O8 crystal, even under highly acidic and alkaline conditions, was comparable to that of other well-known Ti-based solid waste forms.

Alternatif Remediasi Limbah Cair Industri Keripik Singkong (Manihot utilissima) Menggunakan Tanaman Air dan Tawas

In the processing of chips using cassava (Manihot utilissima), it will produce waste in the form of solid and liquid waste. The liquid waste of processing cassava chips contains organic compounds that are easily decomposed and cause unpleasant odors. If the liquid waste is discharged directly into the environment, it will cause pollution and damage the environment. One of the steps that can be used to overcome this problem is phytoremediation. The purpose of this study was to determine the best treatment in the processing of cassava chips industrial wastewater so that the liquid waste is safe to dispose of into the environment. In this study, using two types of aquatic plants, namely water hyacinth (Eichhornia crassipes) and kiambang (Pistia stratiotes) and using alum to remediate liquid waste. This research was conducted experimentally using a jar with a diameter of 15 cm and a height of 25 cm with 3 repetitions of each treatment. The data obtained were analyzed descriptively to determine the best treatment that can be used for remediation of cassava chips industry wastewater. The results showed that the use of water hyacinth plants (Eichhornia crassipes) could improve the quality of wastewater so that it is safe to dispose of into the environment.

Critical review on bioconversion of winery wastes into value-added products

Global increase in the human population and life-style changes have led to enormous development in various industries, including beverage industry. Among the innumerable beverage industries, wineries have received increasing attention and consideration due to various health related benefits and involvement of agricultural materials. Winery industry produces huge quantities of waste materials in the form of solid and liquid wastes. Disposal of these residues (wastes) in the environement is a serious concern and has attracted increasing R&D efforts for their utilization in sustainable manner. Several existing treatments available for winery wastes not environmental-friendly and are even expensive. Usually, combined or hydrid treatment methods have been advocated to achieve the complete utilization of these wastes and among these, bio-based treatment processes have been in much focus for attaining environmental suutaibility in particular. Accordinglt, this review mainly focuses on the application of biorefinery concept for sustainable winery waste management as it is expected that such bioprocesses would be of great impliactions for bioeconomy with furture developments. The review also highlights the advanced techniques for the bioconversion of winery wastes and articulates the major associated challenges.

Advances in Methods for Recovery of Ferrous, Alumina, and Silica Nanoparticles from Fly Ash Waste

Fly ash or coal fly ash causes major global pollution in the form of solid waste and is classified as a “hazardous waste”, which is a by-product of thermal power plants produced during electricity production. Si, Al, Fe Ca, and Mg alone form more than 85% of the chemical compounds and glasses of most fly ashes. Fly ash has a chemical composition of 70–90%, as well as glasses of ferrous, alumina, silica, and CaO. Therefore, fly ash could act as a reliable and alternative source for ferrous, alumina, and silica. The ferrous fractions can be recovered by a simple magnetic separation method, while alumina and silica can be extracted by chemical or biological approaches. Alumina extraction is possible using both alkali- and acid-based methods, while silica is extracted by strong alkali, such as NaOH. Chemical extraction has a higher yield than the biological approaches, but the bio-based approaches are more environmentally friendly. Fly ash can also be used for the synthesis of zeolites by NaOH treatment of variable types, as fly ash is rich in alumino-silicates. The present review work deals with the recent advances in the field of the recovery and synthesis of ferrous, alumina, and silica micro and nanoparticles from fly ash.

Development of subgrade layer using scrap tire and stabilised expansive soil

For every country its development purely lies upon its own Infrastructure development. The roads that bring the connectivity across the country are a very important objective in that aspect. The quality and stability of subgrade are some of the major factors responsible for adequate performance and service of the road during its lifespan. The foremost complications faced by the highway engineers is the instability of subgrade. In India we have wide distribution of Black Cotton Soil, which brings major drawback and provide high level of difficulty in designing and laying roads over it. Maximum percentage of wastes are in the form of solid wastes e.g. waste tyres, broken glasses, spent nuclear fuels, plastics etc. 33 million vehicles have been added to Indian roads in the last three years; one can only visualize the number of tyres that will be discarded. Tyre shreds induce low horizontal stresses since they are lightweight and have relatively high shear strength. Customizing of tyre shreds for civil engineering application has numerous benefits.

Identifikasi Limbah pada Proses Produksi Obat Nyamuk Bakar dengan Menggunakan Material Balance

Based on the initial discussion with people form Mosquito coil factory, there is a requirement to calculate the amount of waste from the factory. According to them, several wastes (in the form of liquid and solid waste) are produced in the process of making mosquito coils. The wastes are often scattered on the floor, causing the condition of the factory space to be unclean or dirty and can cause employees to get sick due to waste scattered on the floor. This research focuses on identifying the waste and to calculate the waste produced by each machine for the production of mosquito coils by using the Material Balance method. Material balance shows a quantitative analysis of material inputs, outputs and wastes / waste at each stage of the production process. Material balance calculation is done in the process of Sifting Coconut Shell Flour, Sifting Process for Coffee Skin Flour, Process for Sifting Wood Flour, Sifting Flour Sifting Process, Onggok Flour Cooking Process, Mixing Material into Mosquito Coe Dough, Mosquito Dough Sifting Process, Forming Process of Paste Paste Plate , The Process of Printing Paste Slabs Into Wet Double Coil, Drying Double Wet Coil Process, Drying and Separation Process of Baking Sheet with Dry Double Coil, Grinding Process of Broken Dry Double Coil, Process of Sifting Sweep Flour Falling on the Floor. Based on the observation, some of the waste obtained from each stage of the production process can be collected again and can be used again as a raw material for making mosquito coils.

Applying Organic Fertilizer from Solid Waste of Super Intensive Shrimp Pond on Production of Milkfish Fingerlings Chanos chanos (Forsskal, 1775)

The cultivation of super-intensive shrimp with high density has consequences on the burden in the form of waste as the aquaculture activities product affecting the habitat feasibility for the aquatic organisms and the environment of fisheries. Super intensive shrimp in the form of solid waste has the potency to use as the raw material of organic fertilizer. Hence, this research is subject to assess the growth response of live feed and milkfish nursery, which are given super intensive pond solid waste through organic fertilizer compared to commercial organic fertilizers. The research used a completely randomized design (CRD) by three times of treatment and repetitions, respectively. The treatment applied in the experimental group was Urea plus SP-36 plus organic fertilizer originated as of best quality concentrated pond solid waste (A), Urea plus SP-36 plus commercial fertilizer (B), Urea plus SP-36 plus chicken farm waste organic fertilizer (C), and the controls group was Urea plus SP-36) (D). The Urea fertilizer dosage was 200 kg/ha, SP-36 as much as 100 kg/ha, and organic fertilizer each as much as 2,000 kg/ha. The parameters observed were components and a large quantity of plankton, the growth and survival rate of the juvenile milkfish, and the quality of water. The results of this research showed that the number of plankton species obtained during nursery of milkfish was 43 genera consisting of 27 genera of phytoplankton and 16 genera of zooplankton. The most dominant plankton found was from the classes Bacillariophyceae as much as 41.86%. The abundance of plankton obtained ranges of 1.330-1.915 ind/L. The super-intensive shrimp pond solid waste was applied as organic fertilizer along with inorganic fertilizer produced abandon plankton along with growth and survival juvenile milkfish produced by the application of commercial organic fertilizer was better than the components in the control group. This research also found that water quality measurement results during the experiment were suitable for the growth of live feed and milkfish.

PEMBUATAN ARANG AKTIF DARI TEMPURUNG KELAPA DAN APLIKASINYA UNTUK PENGOLAHAN LIMBAH CAIR TAHU TEMPE

Industry of tofu and tempe continues to grow in the city of Jayapura. In the Kali Acai area there are at least four tofu and tempe processing plants. In its processing, the industry also produces by by side products in the form of solid and liquid waste. The lack of knowledge and the high cost of liquid waste processing equipment make the factory managers generally immediately dispose of the liquid waste to Kali Acai without processing it first. This can cause the waters of Kali Acai and the surrounding environment to become contaminated. To overcome this problem, socialization and training for managers and employees of the tofu and tempe factory were conducted at Kali Acai times, especially the Ojolali tofu tempe industry about processing liquid waste in a simple way by utilizing coconut shells so that disposed liquid waste is safer and environmentally friendly. The stages of activities carried out included: location surveys and partner selection, preparation of tools and materials, implementation of activities, evaluation and reporting. The implementation of the activity consisted of delivering material, making activated charcoal and processing wastewater using activated charcoal for. Activated charcoal is made from coconut shell with a closed system while the active charcoal application for processing wastewater uses an adsorption technique. The evaluation was carried out through questionnaires for the participants. The results of the activity showed that activated charcoal was able to adsorb color and acid from liquid waste. This is indicated by the change in color from cloudy white to be rather clear and able to increase pH from 5,04 to 7,45 so that it is safer for the environment. In general, the implementation of service activities went smoothly and successfully which was demonstrated through the enthusiasm of the participants and the results of the questionnaire analysis which was filled out by the participants. Keywords: activated charcoal, coconut shell, liquid waste treatment, tofu and tempe waste

Optimisation of Radium Removal from Saline Produced Waters during Oil and Gas Extraction

Unconventional shale gas exploitation presents complex problems in terms of radioactive waste disposal. Large volumes of saline produced water resulting from hydraulic fracturing are typically enriched in radium isotopes, up to several hundred Bq/dm3, orders of magnitude above national discharge limits. There is a need, therefore, to decontaminate the fluid prior to discharge, preferably by creating a less problematic radium-containing, solid waste form. Barite (barium sulphate) co-precipitation is a cost-effective method for achieving these objectives, provided the process can be controlled. In this work, radium recovery of ~90% has been achieved for simulant produced waters containing 100 Bq/dm3, using a single, optimised co-precipitation step. However, salinity has a significant effect on the efficiency of the process; higher salinity solutions requiring substantially more reagent to achieve the same recovery. If >90% radium removal is sought, multiple co-precipitation steps provide a much faster alternative than post-precipitation recrystallization of the barite solid phase, albeit at higher cost. The resulting solid waste has a relatively high specific radium activity but a much smaller volume, which presents a less intractable disposal problem for site operators than large volumes of radium-contaminated fluid.

The Crystallinity of Apatite in Contact with Metamict Pyrochlore from the Silver Crater Mine, ON, Canada

The purpose of this work is to evaluate the long-term effects of radiation on the structure of naturally occurring apatite in the hope of assessing its potential for use as a solid nuclear waste form for actinide sequestration over geologically relevant timescales. When a crystal is exposed to radioactivity from unstable constituent atoms undergoing decay, the crystal’s structure may become damaged. Crystalline materials rendered partially or wholly amorphous in this way are deemed “partially metamict” or “metamict” respectively. Intimate proximity of a non-radioactive mineral to a radioactive one may also cause damage in the former, evident, for example, in pleochroic haloes surrounding zircon inclusions in micas. Radiation damage may be repaired through the process of annealing. Experimental evidence suggests that apatite may anneal during alpha particle bombardment (termed “self-annealing”), which, combined with a low solubility in aqueous fluids and propensity to incorporate actinide elements, makes this mineral a promising phase for nuclear waste storage. Apatite evaluated in this study occurs in a Grenville-aged crustal carbonatite at the Silver Crater Mine in direct contact with U-bearing pyrochlore (var. betafite)—a highly radioactive mineral. Stable isotope analyses of calcite from the carbonatite yield δ18O and δ13C consistent with other similar deposits in the Grenville Province. Although apatite and betafite imaged using cathodoluminescence (CL) show textures indicative of fracture-controlled alteration, Pb isotope analyses of betafite from the Silver Crater Mine reported in previous work are consistent with a model of long term Pb loss from diffusion, suggesting the alteration was not recent. Thus, it is interpreted that these minerals remained juxtaposed with no further metamorphic overprint for ≈1.0 Ga, and therefore provide an ideal opportunity to study the effects of natural, actinide-sourced radiation on the apatite structure over long timescales. Through broad and focused X-ray beam analyses and electron backscatter diffraction (EBSD) mapping, the pyrochlore is shown to be completely metamict—exhibiting no discernible diffraction associated with crystallinity. Meanwhile, apatite evaluated with these methods is confirmed to be highly crystalline with no detectable radiation damage. However, the depth of α-decay damage is not well-understood, with reported depths ranging from tens of microns to just a few nanometers. EBSD, a surface sensitive technique, was therefore used to evaluate the crystallinity of apatite surfaces which had been in direct contact with radioactive pyrochlore, and the entire volume of small apatite crystals whose cores may have received significant radiation doses. The EBSD results demonstrate that apatite remains crystalline, as derived from sharp and correctly-indexed Kikuchi patterns, even on surfaces in direct contact with a highly radioactive source for prolonged periods in natural systems.

Urban Renewal Settlement in Kampong Bandeng Tambakrejo Semarang Based on Preference of Business Community

The results of the study prove that there are physical identifications in the form of buildings, environmental roads, drainage, clean water, wastewater, solid waste, and fire safety as well as non-physical aspects in Kampong Bandeng, namely production activities, trade services and social activities that support Kampong activities analyzed in the form of urban renewal zones based on the preferences of community business groups. The direction of the renewal of the Kampong Bandeng can be an approach to the community and the government in the form of renewal from the community of the Kampong Bandeng Tambakrejo to refer to the government. The zoning forms are 5 zones that will be renewed, namely there are settlement zones that accommodate the people affected by regional renewal, trade zones, and services found on secondary arterial roads, production and education zones in accordance with people's preferences located on the Tanggungrejo Raya road, and the open space zone public in order to increase social development in increasing community social activities.

Empty Fruit Bunches as Potential Source for Biosilica Fertilizer for Oil Palm

In Indonesia, the development of oil palm plantations has been going on a pervasive way; they covered about 14.03 million hectares in 2017. This massive coverage of land might then generate a tremendous amount of biomass per year, both in the form of both solid and liquid wastes. The processing of fresh fruit bunches (FFB) in palm oil mill (POM) produces wastes that primarily in the form of empty fruit bunches (EFB), which is amounting of up to 25% (w/w) of FFB. It has been being indicated that EFB contains a considerable amount of silica (Si) which attracts the Indonesian Research Institute for Biotechnology and Bioindustry (IRIBB) to investigate the potential use of EFB as a source of bio-available Si, in the form of H4SiO4 (mono silicic acid, BioSilAc). The experiment was carried out at Sungai Mirah Minting Estate, PT Bumitama Gunajaya Agro-Central Kalimantan. The EFB material was obtained from POM and chopped into 2.5-5.0 cm in size. A four-week bio-decomposition process was employed by using bio-decomposers containing Trichoderma pseudokoningii, T. polysporum, and Phanerochaete chrysosporium. Chemical analyses of composted EFB were conducted before and 28-days after decomposer application. The presence of Si in the compost was observed by scanning electron microscopy (SEM). The effect of Si-containing EFB compost on the immature and mature oil palm was evaluated. Seven treatments, i.e. combination of EFB compost and BioSilAc application with reduced-dosages of NPK fertilisers were arranged in a random block design with three replicates. The results show that large quantities of silica bodies attached to the surface of EFB fibres and amounting to 0.44% soluble Si. The FFB data indicated that the application of 75% NPK + 500 kg composted EFB + 2 L BioSilAc/ha/year on a five-year-old plant resulted in higher yield than that obtained from 100% standard dosage of NPK. The study also revealed that the application of EFB compost reduced 50% of BioSilAc dosage.

EFFECT OF GAMMA RADAITION ON THE MORPHOLOGY OF CONCRETE IN RADIOACTIVE WASTE DISPOSAL SITE 2

Cement is an important material in radioactive waste management. It is used as a solidifying agent for the concentrated wastes resulting from the treatment process. The solidification process results in immobilized wastes. To protect the human and the environment for long periods of time, the solidified waste forms should withstand the operation and storage conditions. Hence, the cement blocks should have proper mechanical and chemical properties. Moreover, the effect of radiation on the blocks should be studied to assure the retention of radionuclides by the cement matrix under radiation fields. To carry out the study, cement blocks were irradiated by Gamma radiation at doses 40, 120 and 240 KGy. The morphology of the blocks was studied before and after irradiation using X-ray Diffraction Patterns (XRD), and Scanning Electron Microscopy (SEM). The results of morphology studies are presented. The morphology studies indicated an improvement in the fixation of radionuclides on the cement matrix after irradiation.

Prediction of new iodine-containing apatites using machine learning and density functional theory

The authors develop a computational approach that integrates machine learning (ML) and density functional theory (DFT) with experimental data to predict formable and thermodynamically stable iodine-containing apatites. This is an important problem because radioactive iodine is toxic and capturing it in solid waste forms have implications in remediation treatments. The authors train ML models using 336 compositions and screen 54 iodine-containing compounds in apatite stoichiometry. ML models predict 18 as formable and 24 as nonformable in the apatite structure; 12 compounds were identified to be uncertain. DFT convex hull predicted two to be thermodynamically stable, one as metastable, and nine as unstable.

KARAKTERISASI ARANG CANGKANG KELAPA SAWIT SEBAGAI BAHAN PEMBANTU UNTUK MINGKATKAN KESUBURAN TANAMAN BERDASARKAN KROMATOGRAFI GC – MS

In 2015, the area of oil palm plantations in Indonesia had reached 10,701,436 ha, with details of the people's oil palm plantation 4,810,271 ha, state-owned oil palm plantations 704,094 ha and private oil palm plantations 5,207,071 ha. A ton base of fresh palm oil fruit bunches will produce 20% - 23% CPO; 5% - 7% PKO and the rest in the form of solid waste, namely 20% - 23% oil palm empty bunches; 10% - 12% oil palm fruit fiber and 7% - 9% oil palm shells. In the implementation of this study, oil palm shell charcoal was made by treating palm oil shells. From the treatment of oil palm shell roasting, the average yield was 38.20% (the last temperature of roasting 348 0 C, when the palm shells being roasted were no longer smoke). From the results of the chromatogram analysis of GC - MS, oil palm shell charcoal is known as 25 organic compounds with the dominant composition being cyclopropyl with a concentration of 14.87%; acetic acid with a concentration of 17.01%; benzenesulfonic acid with a concentration of 12.11%; benzene with a concentration of 7.3% and phenol with a concentration of 15.59%. The characterization of the composition of the organic palm shell charcoal organic compounds needs to be done in order to about the development of the use of oil palm shell charcoal as an auxiliary material to increase plant fertility.

Impact of water flooding on hard cement-recycled polystyrene composite immobilizing radioactive sulfate waste simulate

Radioactive sulfate wastes are generated from boiling water reactors (BWRs) and should be immobilized before their disposing to avoid the back release of their hazardous components under the impact of water flooding incident in the disposal site, which gives rise of secondary contamination at the surrounding area. A cement-polymer composite formulated from recycled post-consumer polystyrene foam waste and Portland cement was proposed as an incorporating matrix for solidification/stabilization (S/S) of sulfate waste simulate in laboratory scale experiments. To imitate a water-flooding incident, the reached solidified waste form was completely immersed in three types of water, namely, tap-, ground-, and seawater for increasing periods up to 420 days. Compressive strength, porosity and mass change of the solidified waste samples were evaluated at the end of various immersion periods. Besides, FT-IR, XRD, SEM with EDX analyses were performed to follow the internal changes of the product post the immersion. Based on the data obtained, it could be concluded that the comparative stability of the nominated composite under the impact of water flooding incident candidates it as an acceptable matrix for immobilizing the radioactive sulfate wastes. In addition to its stability, the formulated composite have the advantage of upgrading post-consumer non-biodegradable polystyrene foam waste, therefore, thus introducing a sustainable technique and saving landfill area by using significant amounts of one of the major municipal solid wastes.

Peremajaan Kawasan Kampung Bandeng Tambakrejo Semarang berdasarkan Preferensi Kelompok Usaha Masyarakat

Kampung Bandeng Tambakrejo used to be the center of the middle-class milkfish industry, it is unfortunate that currently the area is experiencing a decline in quality both physically and activity. The production process of Bandeng village is very disturbed by inadequate physical and natural conditions, so that only a few business groups have survived to develop the milkfish business. The sustainability goal of the bandeng village is to conduct a research in the form of rejuvenation direction for Tambakrejo Bandeng village based on community business group preferences. The research method used in this study is qualitative research. Data collection is done by using interviews with resource persons, observation and documentation. The data in this study were obtained through interviews with determined resource persons or purposive sampling to bandeng group members as well as those who were active in the production of milkfish and shrimp processing and village elders who were aware of village growth and physical and non-physical sustainability of milkfish village rejuvenation directions based on Permen PU No. 02 / PRT / M / 2016 about improving the quality of slums and slums. The results of the study prove that there are physical identifications in the form of buildings, environmental roads, drainage, clean water, waste water, solid waste, and fire safety as well as non-physical aspects in Bandeng villages, namely production activities, trade services and social activities that support village activities. analyzed in the form of regional rejuvenation zones based on the preferences of community business groups. The direction of the rejuvenation of the milkfish village can be an approach to the community and the government in the form of rejuvenation from the community of the bandeng Tambakrejo village to refer to the government. The zoning forms are 5 zones that will be rejuvenated, namely there are settlement zones that accommodate the people affected by regional rejuvenation, trade zones and services found on secondary arterial roads, production and education zones in accordance with people's preferences located on the Tanggungrejo Raya road, and the Open Space Zone public in order to increase social development in increasing community social activities.

Logistics System of Waste Management at the Mining Enterprises

The article considers the solutions related to the formation and use of production and consumption wastes at the enterprises of the mineral resources complex. Particular attention is paid to production waste in the form of solid mineral waste (man-made mineral deposits), which, on the one hand, represents a secondary mineral resource base, on the other hand - has a significant negative impact on various elements of the environment. The research aim is to form a logistics system of waste management at the enterprises of the mineral resources complex. The scientific novelty lies in the application of logistic principles, approaches and methods to the sphere of production and consumer waste management during the formation of a large amount of production waste. The article substantiates the importance of the formation and functioning of a logistics system of waste management at enterprises of the mineral resources complex. This logistic system can increase the level of organizational security and economic efficiency of managing production and consumption waste and thereby mitigate the environmental and economic problems of these enterprises.

Recovering Iron from Iron Ore Tailings and Preparing Concrete Composite Admixtures

Iron ore tailings (IOTs) are a form of solid waste produced during the beneficiation process of iron ore concentrate. In this paper, iron recovery from IOTs was studied at different points during a process involving pre-concentration followed by direct reduction and magnetic separation. Then, slag-tailing concrete composite admixtures were prepared from high-silica residues. Based on the analyses of the chemical composition and crystalline phases, a pre-concentration test was developed, and a pre-concentrated concentrate (PC) with an iron grade of 36.58 wt % and a total iron recovery of 83.86 wt % was obtained from a feed iron grade of 12.61 wt %. Furthermore, the influences of various parameters on iron recovery from PC through direct reduction and magnetic separation were investigated. The optimal parameters were found to be as follows: A roasting temperature of 1250 °C, a roasting time of 50 min, and a 17.5:7.5:12.5:100 ratio of bitumite/sodium carbonate/lime/PC. Under these conditions, the iron grade of the reduced iron powder was 92.30 wt %, and the iron recovery rate was 93.96 wt %. With respect to the original IOTs, the iron recovery was 78.79 wt %. Then, highly active slag-tailing concrete composite admixtures were prepared using the high-silica residues and S75 blast furnace slag powder. When the amount of high-silica residues replacing slag was 20%, the strength of cement mortar blocks at 7 days and 28 days was 33.11 MPa and 50 MPa, respectively, whereas the activity indices were 89 and 108, respectively. Meanwhile, the fluidity rate was appropriately 109. When the content of high-silica residues replacing slag was not more than 30%, the quality of mineral admixtures was not reduced. Last but not least, reusing the high-silica residues during iron recovery enabled the complete utilization of the IOTs.