Toward sustainable soda ash production: A critical review on eco-impacts, modifications, and innovative approaches

Results in Engineering, Год журнала: 2024, Номер 23, С. 102399 - 102399

Опубликована: Июнь 11, 2024

This article explores the evolution of soda ash production methods, highlighting shift towards more sustainable practices. It analyzes environmental and economic challenges traditional including high energy consumption, pollution, waste generation. The discussion progresses chronologically, examining obsolete natural methods their gradual replacement by efficient techniques like Solvay Process. However, calcium chloride (CaCl2) as a byproduct in Process necessitates further advancements. promising alternatives such modified utilizing external CO2 sources exciting new frontiers microbial-assisted production. Additionally, it delves into wastes CaO (calcium oxide) potential layered double hydroxides (LDHs) cyclic CO2, even though these may generate hydrochloric acid (HCl) byproduct. primary focus remains on innovative based physical biological processes to achieve enhanced efficiency, decreased impact, reduced resource demands.

Язык: Английский

---

The efficiency and capabilities assessment of some local materials in wastewater treatment using the multi soil layering

Results in Engineering, Год журнала: 2025, Номер unknown, С. 104618 - 104618

Опубликована: Март 1, 2025

Язык: Английский

---

Sustainable hydrophobic bio-based adsorbent from modified sphagnum moss for efficient oil-water separation

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Апрель 6, 2025

Oil spills pose a major environmental challenge, highlighting the urgent need for effective materials capable of achieving efficient oil-water separation to mitigate their detrimental impacts. While various bio-based and synthetic adsorbents have been explored this purpose, existing often suffer from low adsorption capacity, poor reusability, limited hydrophobicity, or concerns. In particular, natural frequently exhibit inherent hydrophilicity, limiting effectiveness in selective oil adsorption. To address gap, we developed novel adsorbent derived sphagnum moss, modified via sequential pretreatment with hydrogen peroxide sodium hydroxide, followed by chemical functionalization silane. This modification enhanced hydrophobicity structural stability, overcoming limitations unmodified adsorbents. Characterization using SEM, XPS, FTIR, TGA confirmed successful grafting hydrophobic functional groups formation uniformly rough surface, leading water contact angle 157°. Comparative analysis demonstrated that moss exhibited significantly capacity 22.756 g/g motor oil, outperforming conventional adsorbents, including currently prevalent biological (1.69-12.8 g/g) biochar (8.1-18.2 g/g). Furthermore, kinetics conformed pseudo-second-order model, indicating chemisorption as dominant mechanism. suggests strong interactions between molecules functionalized contributing efficiency selectivity. These findings highlight novelty, superior performance, compatibility an sustainable solution spill remediation. Its high affinity, reusability make it promising alternative providing eco-friendly approach management restoration.

Язык: Английский

---

Microalgae as innovative mineral and nutrient carriers; potential applications in soil improvement and animal nutrition

Food and Bioproducts Processing, Год журнала: 2025, Номер unknown

Опубликована: Май 1, 2025

Язык: Английский

---

Carboxymethyl Inulin Modified Chitosan Composites for Cu (II) Removal in Aqueous Solution: Synthesis, Influencing Factors and Adsorption Mechanism

Journal of Polymers and the Environment, Год журнала: 2024, Номер unknown

Опубликована: Сен. 3, 2024

Язык: Английский

---

Roles of Nitrogen- and Sulphur-Containing Groups in Copper Ion Adsorption by a Modified Chitosan Carboxymethyl Starch Polymer

Separations, Год журнала: 2024, Номер 11(10), С. 283 - 283

Опубликована: Окт. 1, 2024

Owing to the toxicity and widespread use of copper, pollution caused by copper ions has become a long-standing environmental industrial challenge. In this study, new adsorbent was developed dispose remove from water. The modified chitosan–carboxymethyl starch (MCTS-CMS) polymer characterised, FTIR SEM-EDS confirmed successful graft modification receptor. adsorption behaviour investigated through various parameters, results showed that optimal parameters were pH > 4.0, an time 30 min, reaction temperature 293 K, initial concentration 100–120 mg/L. experimental data exhibited good fit with pseudo-second-order models, Langmuir isotherm revealed found be highly suitable for adsorption, maximum capacity 321.16 mg/g. Thermodynamic analysis process exothermic spontaneous. XRD XPS generation posnjakite after predominant roles nitrogen- sulphur-containing groups in adsorption. Further existence chemisorption physical mainly facilitating Cu(II) absorption polymer. MCTS-CMS excellent removal efficiency 98% acidic solutions. On basis these findings, demonstrates performance high selectivity wastewater or polluted water bodies. This work recommends expanding polymer’s practical applications contribute purification efforts.

Язык: Английский

---

Sheet nanocomposites of sorghum stalk loaded with hydrated ferric oxide for Cu(Ⅱ) deep removal from water

Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(6), С. 114415 - 114415

Опубликована: Окт. 11, 2024

Язык: Английский

---