Decarbonization in waste recycling industry using digitalization to promote net-zero emissions and its implications on sustainability

Kurniawan, Tonni Agustiono; Othman, Mohd Hafiz Dzarfan; Liang, Xue; Goh, Hui Hwang; Gikas, Petros; Kusworo, Tutuk Djoko; Anouzla, Abdelkader; Chew, Kit Wayne

doi:10.1016/j.jenvman.2023.117765

Cited by 78 publications

(13 citation statements)

References 117 publications

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“…Pretreatment of clinoptilolite with NaCl enabled it to treat more bed volume (64 BV) at the breakthrough point of 0.5 mg/L of Cr concentration and achieve a longer breakthrough time (1500 min) for the first run, as compared to the as-received clinoptilolite (32 BV; 250 min) because pretreatment of clinoptilolite with NaCl rendered it in the homoionic form of Na + . Consequently, the Na + of the clinoptilolite could be replaced by Cr 3+ in the solution via an ion exchange mechanism, and some might be due to passive adsorption [86]. Although the Cr removal performance of NaCltreated clinoptilolite is not excellent, this adsorbent has a reasonable Cr adsorption capacity (4.5 mg/g).…”

Section: Cr Adsorption Capacity Of Clinoptilolitementioning

confidence: 99%

Chromium Removal from Aqueous Solution Using Natural Clinoptilolite

Kurniawan

Othman

Adam

et al. 2023

Water

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This work investigates the applicability of clinoptilolite, a natural zeolite, as a low-cost adsorbent for removing chromium from aqueous solutions using fixed bed studies. To improve its removal performance for the inorganic pollutant, the adsorbent is pretreated with NaCl to prepare it in the homoionic form of Na+ before undertaking ion exchange with Cr3+ in aqueous solution. This work also evaluates if treated effluents could meet the required effluent discharge standard set by legislation for the target pollutant. To sustain its cost-effectiveness for wastewater treatment, the spent adsorbent is regenerated with NaOH. It was found that the clinoptilolite treated with NaCl has a two-times higher Cr adsorption capacity (4.5 mg/g) than the as-received clinoptilolite (2.2 mg/g). Pretreatment of the clinoptilolite with NaCl enabled it to treat more bed volume (BV) (64 BV) at a breakthrough point of 0.5 mg/L of Cr concentration and achieve a longer breakthrough time (1500 min) for the first run, as compared to as-received clinoptilolite (32 BV; 250 min). This suggests that pretreatment of clinoptilolite with NaCl rendered it in the homoionic form of Na+. Although pretreated clinoptilolite could treat the Cr wastewater at an initial concentration of 10 mg/L, its treated effluents were still unable to meet the required Cr limit of less than 0.05 mg/L set by the US Environmental Protection Agency (EPA).

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Section: Cr Adsorption Capacity Of Clinoptilolitementioning

confidence: 99%

Chromium Removal from Aqueous Solution Using Natural Clinoptilolite

Kurniawan

Othman

Adam

et al. 2023

Water

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“…These environmental features include air quality, carbon emission levels, atmospheric pressure and other climatic conditions (Nahavandi, 2019). Digital technologies such as artificial intelligence, machine learning and Internet of things can also be used to predict and monitor environmental conditions and ultimately improve environmental sustainability (Kurniawan et al ., 2023b).…”

Section: Industrial Revolutionsmentioning

confidence: 99%

Research trends in industry 5.0 and its application in the construction industry

Tunji-Olayeni,

Aigbavboa,

Oke

et al. 2023

TECHS

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PurposeIndustry 5.0 provides significant social, environmental and economic benefits over previous industrial revolutions. However, research in the field of industry 5.0 is still at a very nascent stage. Little is known about research trends in the field and its applications in specific sectors as construction which have relatively low sustainability index. Hence, this study aims to explore research trends in industry 5.0 and its applications in the construction industry.Design/methodology/approachThe study adopted a bibliometric analysis with the use of the vosviewer. The main search words used in the study were “Industry 5.0”, “Society 5.0” AND “Fifth Industrial Revolution”. Initial extracted papers with these keywords were 1036. After refining based on language, document type, key words and timeframe, a total of 188 papers were found suitable for the analysis.FindingsThe most impactful research on Industry 5.0 to date was from the United States, Australia and Sweden while the journal sustainability was found to be the highest document source on Industry 5.0. The application areas of industry 5.0 in the construction industry include health and safety, collaborative working, waste management, measurement of environmental features (indoor air quality, atmospheric pressure, noise, humidity and temperature) and forecasting of environmental, social or financial outcomes.Research limitations/implicationsThe study used review based papers which form the bulk of the existing research on industry 5.0. This limits understanding of the practical applications, benefits and challenges associated with the use of industry 5.0.Originality/valueThis work contributes to the theory and practice of industry 5.0 by providing baseline data for future research directions on industry 5.0. The work specifically highlights the application areas of industry 5.0 in the construction industry and also indicates the need for questionnaire, interviews or case study based research to enhance understanding of the practical applications of industry 5.0.

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“…16,17 This results in more energy-efficient societies (thereby contributing to a reduction in CO 2 eq footprint), and is having an impact on a wide range of fields, such as information systems, agriculture and cybersecurity. 18–21 Nonetheless, the majority of IoT devices are battery-powered, which presents two major challenges. Firstly, the practicality challenges associated with replacing or recharging primary and secondary batteries is expected to prevent >80% of the potential of the IoT from being realized.…”

Section: Introductionmentioning

confidence: 99%